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AI Copilot Developer - Power Apps - Power platform - Banking - Hybrid Role - AI Copilot Developer Rate - £490 per day (Inside IR35) Duration - 6 months with very likely extension Location - Hybrid/Canary Wharf - 3 days per week in a Canary Wharf office Tech Stack Copilot Powerapps Power platform Javascript Role Development and support of low code Business applications using Power platform, M365, C#, JavaScript. You will collaborate closely with business analysts, business users and stakeholders to understand requirements, design innovative solutions, and bring them to life through development, testing, and deployment. Tasks Design, develop, test, and deploy AI-powered solutions using Microsoft Copilot Studio, Power Platform, and Microsoft 365 technologies. Build and maintain intelligent agents, conversational AI experiences, and automated business processes. Integrate AI solutions with enterprise systems, including Dataverse, SharePoint, Power BI, Microsoft Fabric, SQL, and other business applications. Collaborate with business stakeholders to gather requirements, identify AI opportunities, and deliver innovative solutions that improve efficiency and user experience. Apply best practices for security, governance, compliance, and Responsible AI to ensure enterprise-grade solutions. Support solution architecture, documentation, testing, deployment, and ongoing maintenance activities. Contribute to continuous improvement by identifying opportunities to leverage AI, automation, and low-code technologies to enhance business processes and decision-making. Provide technical support, troubleshooting, and knowledge sharing across AI, Copilot, and Power Platform initiatives GCS is acting as an Employment Business in relation to this vacancy.

Solutions Architect - Tier 1 Bank - Canary Wharf Role - Application Architect Duration - 6 months with very likely extension Location - Hybrid/Canary Wharf - 3 days per week in a Canary Wharf office Rate - £600 per day (Inside IR35) Experience - In depth understanding of Object Orientated programming concepts as well as of the full Software Development Life Cycle. Good understanding of MS .NET Framework environments. Knowledge and experience of Agile methodology Knowledge of Cloud and AI technologies that can be adopted into the workplace Extensive experience working as a software and solutions architect. Experience in designing of high-level concepts for software solutions. Experience in development of Azure cloud-based as well as on-prem solutions. DevOps and SCRUM experience Experience in Cloud migration planning and execution Tasks - Create and improve architectural standards for on premise and azure cloud software products, develop cloud migration procedures and guidelines. Assist in cloud migration projects, assess readiness and dependencies, optimize for the Cloud. Create and review blueprints for software products, provide guidance on improving architecture. Coding mission critical parts and performing code reviews. Assist on integrating AI technologies to improve existing systems. Ensure that applications are in line with compliance and regulatory standards and conduct regular security assessments of these applications. Technical writing (creating related documentation) Assist developers with any architecture related issues and queries. GCS is acting as an Employment Business in relation to this vacancy.

Contract Opportunity | Tier 1 Investment Bank | Canary Wharf Overview Our client, a Tier 1 Investment Bank based in Canary Wharf, is seeking an experienced C# Developer to join a strategic application modernisation programme. This role sits within a technology team responsible for evolving critical business applications, supporting a transition from Legacy desktop solutions to modern web-based and cloud-enabled platforms. The successful candidate will work across the full software development lifecycle, contributing to the enhancement of existing applications while helping shape the future-state architecture. Key Information Role: Senior C# Developer Location: Canary Wharf, London (Hybrid Working) Contract Length: 6 months Initial Contract Rate: £416 per day (Inside IR35) Start Date: ASAP The Programme This role forms part of a wider transformation initiative focused on: Modernising Legacy desktop applications Migrating technology platforms from on-premise infrastructure to Azure Supporting the transition from desktop-based solutions to web technologies Improving application performance, maintainability and scalability Delivering new functionality aligned to business and regulatory requirements The successful contractor will work closely with development teams, business stakeholders and architecture functions to deliver high-quality software solutions within a complex enterprise environment. Key Responsibilities Develop and maintain enterprise-grade applications using C# Enhance and support existing WPF and WinForms applications Contribute to the migration of desktop applications towards web-based architectures Build and integrate APIs and Back End services Write efficient SQL queries and stored procedures Collaborate with business analysts, architects and end users to understand requirements Participate in code reviews and promote development best practices Troubleshoot production issues and contribute to continuous improvement initiatives Support the adoption of Azure technologies as part of the broader cloud transformation strategy Required Skills & Experience Essential Strong commercial experience developing applications using C#/.NET Proven expertise with WPF or Winforms Strong SQL or Oracle development skills Understanding of software design principles and development best practices Experience working within complex enterprise environments Experience working with Azure Desirable Experience with JavaScript Exposure to React Experience contributing to application modernisation programmes Knowledge of Azure cloud technologies Experience within Financial Services, Investment Banking or Capital Markets environments Personal Attributes Strong analytical and problem-solving skills Excellent communication and stakeholder management abilities Ability to work independently in a fast-paced environment Collaborative mindset and willingness to mentor junior developers Comfortable balancing support of Legacy systems alongside modernisation initiatives GCS is acting as an Employment Business in relation to this vacancy.

Technical Writer - Software/Financial Services Role - Technical Writer Rate - £416 per day Duration - 6 months with very likely extension Location - Hybrid/Canary Wharf - 3 days per week in a Canary Wharf office Technical Writer to join a London-based technology team operating within a complex financial services environment. This is a hands-on role working closely with software developers, technical teams and business stakeholders to turn complex systems, processes and requirements into clear, structured and accessible documentation. The Role You'll work across the software development lifecycle, producing and maintaining documentation covering both technical and business-facing systems. Key responsibilities will include: Creating and maintaining technical and application documentation. Producing requirements and technical specifications, user guides, system documentation, support materials and internal procedures. Working closely with developers and business stakeholders to understand complex systems and translate technical information into clear documentation. Reviewing existing technical documentation and improving its accuracy, consistency and usability. Documenting application functionality, processes and system behaviour. Supporting documentation throughout the SDLC, including development, testing, release and ongoing support. Helping improve documentation standards and consistency across technology teams. Supporting knowledge-sharing sessions for developers and other stakeholders. Taking unclear or evolving requirements and turning them into structured, usable documentation. What We're Looking For You'll ideally have: Proven experience as a Technical Writer within software development, IT or another technology-focused environment. Experience producing technical specifications, requirements documentation, user guides and process documentation. Strong understanding of software development concepts and the SDLC. The ability to understand complex software functionality and explain it clearly to different audiences. Experience working directly with software developers and business stakeholders. Strong analytical skills and attention to detail. Excellent written and verbal communication skills. Strong knowledge of Microsoft Word, Excel, PowerPoint and Visio. Nice to Have Experience or knowledge in any of the following would be particularly useful: Financial services or banking technology C#/.NET Microsoft SQL Server Agile software development Azure DevOps Jira SharePoint GCS is acting as an Employment Business in relation to this vacancy.

Project Overview We are looking for an experienced Quality Assurance Automation Engineer to support a major technology programme involving Microsoft Dynamics 365 Finance & Operations (D365 F&O). The role will focus on ensuring the quality, reliability and integration of financial systems and business processes. Key Responsibilities Perform functional, integration, end-to-end and automation testing across enterprise systems. Test D365 Finance & Operations, particularly Purchase-to-Pay (P2P) processes, including purchase orders, invoices, payments and reconciliation. Conduct API testing using Postman and validate data flows between multiple systems. Manage test cases, defects and requirements traceability using Azure DevOps Test Plans. Review and challenge supplier testing, identifying gaps and quality risks. Coordinate UAT, regression testing, defect resolution and production readiness assessments. Prepare test strategies, evidence and release quality reports. Essential Skills & Experience Strong experience in Quality Assurance and Test Automation. Hands-on experience with Microsoft Dynamics 365 Finance & Operations, ideally D365 Finance. Experience testing financial processes, particularly Procure-to-Pay (P2P). Strong integration and end-to-end testing experience. API testing experience using Postman. Experience with Azure DevOps Test Plans and defect management. Knowledge of data validation, reconciliation and enterprise system integrations. Ability to independently assess testing quality and identify release risks. GCS is acting as an Employment Business in relation to this vacancy.

Azure DevOps Engineer Sheffield Contract A leading digital banking organisation is seeking an experienced Azure DevOps Engineer to join its Cybersecurity Product Sustained Engineering team. You'll play a key role in designing, building, and supporting secure cloud solutions within Azure, working on large-scale enterprise infrastructure, deployment automation, and cloud-hosted applications. This is an excellent opportunity to work with cutting-edge technologies, including Azure, Terraform, Azure DevOps, Python, CI/CD pipelines, and AI-related Azure services . Key Skills Required: Strong Azure cloud engineering experience Azure DevOps and CI/CD pipeline automation Terraform, Bicep, or ARM templates Python, PowerShell, or Bash scripting Azure App Services, Virtual Machines, Networking, and Storage Enterprise-scale cloud infrastructure experience Contract Details: Sheffield (3 days onsite) Contract role Inside IR35 If you have a strong background in Azure cloud engineering and DevOps within large enterprise environments, we'd love to hear from you. Apply with your latest CV for further details. GCS is acting as an Employment Business in relation to this vacancy.

Role: Broadcast Technology Engineer Location: Chiswick Business Park, West London (100% onsite) Working Pattern: Part-time - Monday, Tuesday and Wednesday Working Hours: 10 AM - 6 PM Rate: GBP 41/Hr Inside IR35 Role Overview: The position involves bridging the gap between Broadcast and IT, providing technical support for production systems and ensuring smooth broadcast and post-production operations. Key Responsibilities: Providing technical support for Adobe Premiere Pro and Avid Media Composer. Supporting broadcast production systems such as Avid, Vantage, Glookast and Mimir. Planning and delivering system maintenance and upgrades. Supporting and automating media ingest workflows. Managing IP addresses and coordinating infrastructure upgrades. Troubleshooting production system issues and supporting editors and producers. Documenting technical processes, FAQs and common fixes. Supporting the transition from Avid to Adobe Premiere Pro. Key Requirements: Hands-on Adobe Premiere Pro support experience. Avid Media Composer experience. Previous Broadcast / Post-Production Support experience. Good understanding of media production workflows and technical infrastructure. Experience with Mimir would be an advantage. GCS is acting as an Employment Business in relation to this vacancy.

Cyber Incident Response Lead Contract Outside IR35 6-Month Initial Contract Immediate Start A major UK organisation is seeking an experienced Cyber Incident Response Lead to join a critical cyber security function and take ownership of major cyber incidents from day one. This is an urgent requirement for a hands-on incident response specialist with a proven track record leading Priority 1 (P1) cyber incidents, driving effective response activities, coordinating technical teams, and providing clear leadership during high-pressure situations. Working within a fast-paced environment, you will play a key role in protecting business operations, managing cyber crises, and ensuring incidents are contained, remediated and communicated effectively. Responsibilities - Lead the response to major and critical cyber security incidents - Coordinate technical and business stakeholders during live incident situations - Drive containment, eradication and recovery activities - Provide clear direction, leadership and decision-making during cyber crises - Deliver timely and effective communications to senior stakeholders and leadership teams - Conduct incident reviews and identify opportunities for process and control improvements - Work closely with security operations, infrastructure, technology and business teams to enhance organisational resilience Requirements - Demonstrable experience leading major or P1 cyber security incidents - Strong background in incident response, cyber crisis management and security operations - Hands-on technical capability with the ability to investigate and understand technical detail when required - Excellent stakeholder management and communication skills - Ability to operate independently with minimal supervision - Calm, decisive and outcome-focused approach under pressure - Proven experience managing multiple priorities within a fast-moving environment Whats on Offer? - Outside IR35 contract - Immediate start with onboarding required within the next two weeks - Pre-booked interview slots available next week - Opportunity to make an immediate impact within a critical cyber security function - Initial 6-month contract - Further 6-month extension highly likely If you are an experienced Cyber Incident Response professional with a strong track record of leading high-severity cyber incidents and are available at short notice, wed be keen to speak with you. Apply today for a confidential discussion and full details of the opportunity. GCS is acting as an Employment Business in relation to this vacancy.

Contract Opportunity Tier 1 Investment Bank Canary Wharf Overview Our client, a Tier 1 Investment Bank based in Canary Wharf, is seeking an experienced C# Developer to join a strategic application modernisation programme. This role sits within a technology team responsible for evolving critical business applications, supporting a transition from legacy desktop solutions to modern web-based and cloud-enabled platforms. The successful candidate will work across the full software development lifecycle, contributing to the enhancement of existing applications while helping shape the future-state architecture. Key Information Role: Senior C# Developer Location: Canary Wharf, London (Hybrid Working) Contract Length: 6 Months Initial Contract Rate: 416 per day (Inside IR35) Start Date: ASAP The Programme This role forms part of a wider transformation initiative focused on: Modernising legacy desktop applications Migrating technology platforms from on-premise infrastructure to Azure Supporting the transition from desktop-based solutions to web technologies Improving application performance, maintainability and scalability Delivering new functionality aligned to business and regulatory requirements The successful contractor will work closely with development teams, business stakeholders and architecture functions to deliver high-quality software solutions within a complex enterprise environment. Key Responsibilities Develop and maintain enterprise-grade applications using C# Enhance and support existing WPF and WinForms applications Contribute to the migration of desktop applications towards web-based architectures Build and integrate APIs and backend services Write efficient SQL queries and stored procedures Collaborate with business analysts, architects and end users to understand requirements Participate in code reviews and promote development best practices Troubleshoot production issues and contribute to continuous improvement initiatives Support the adoption of Azure technologies as part of the broader cloud transformation strategy Required Skills & Experience Essential Strong commercial experience developing applications using C#/.NET Proven expertise with WPF or Winforms Strong SQL or Oracle development skills Understanding of software design principles and development best practices Experience working within complex enterprise environments Experience working with Azure Desirable Experience with JavaScript Exposure to React Experience contributing to application modernisation programmes Knowledge of Azure cloud technologies Experience within Financial Services, Investment Banking or Capital Markets environments Personal Attributes Strong analytical and problem-solving skills Excellent communication and stakeholder management abilities Ability to work independently in a fast-paced environment Collaborative mindset and willingness to mentor junior developers Comfortable balancing support of legacy systems alongside modernisation initiatives GCS is acting as an Employment Business in relation to this vacancy.

Cyber Security Assurance Manager Contract: 6 Months Location: London (1 day per week onsite / flexible) Day Rate: Competitive Start: ASAP We're supporting a large, international enterprise in the search for an experienced Cyber Security Assurance Manager to lead a cyber assurance and control effectiveness programme across a complex global environment. This is a senior second-line cyber security position, responsible for independently assessing the effectiveness of security controls, driving assurance activity, overseeing technical reviews, and providing risk-based insight to senior stakeholders. The successful contractor will lead a small team while acting as a trusted adviser across cyber security, technology, audit and risk functions. The Opportunity You will own the planning and delivery of a risk-based technical assurance programme, providing independent oversight of security controls across infrastructure, cloud, identity, applications, vulnerability management, data security and incident response capabilities. The role combines technical cyber security expertise, assurance methodology, stakeholder engagement and leadership. You'll engage with senior business and technology leaders, deliver actionable reporting, challenge control weaknesses, and drive continuous improvement across the control environment. Key Responsibilities Lead the delivery of a large-scale cyber technical assurance programme. Manage and mentor a team of Technical Assurance Analysts. Conduct independent second-line assessments of cyber security controls and control effectiveness. Review technical evidence, validate findings and assess both design and operating effectiveness of controls. Oversee control testing activities across cloud, infrastructure, networks, applications and identity environments. Drive continuous controls monitoring, automated assurance and data-driven reporting capabilities. Track remediation activities and ensure significant findings are appropriately managed and escalated. Develop executive-level reporting, dashboards and cyber risk metrics. Partner with Cyber Security, Internal Audit, Risk, Compliance, Legal and Technology teams to improve security outcomes. Act as a subject matter expert on cyber assurance, risk and control effectiveness. Required Experience Strong background in Cyber Security Assurance, Technology Risk, IT Audit, Security Testing or Cyber Risk Management. Experience leading assurance reviews within large, complex enterprise environments. Deep understanding of second-line assurance and control effectiveness assessment. Experience assessing technical controls across cloud, infrastructure, identity, networks and applications. Strong working knowledge of frameworks such as: ISO 27001 NIST Cybersecurity Framework NIST 800-53 CIS Controls MITRE ATT&CK Experience producing board-level reporting and translating technical findings into business risk. Excellent stakeholder management skills, with the ability to challenge constructively and influence senior leaders. Desirable Experience Continuous Controls Monitoring (CCM) platforms. Automated assurance and evidence collection. PowerShell, Python or API-based automation. Cloud security assurance and modern identity controls. CISSP, CISM, CISA, CRISC, CCSP or ISO 27001 Lead Auditor certifications. GCS is acting as an Employment Business in relation to this vacancy.

Role - 2nd Line EUC Support Engineer Duration - 6 months with very likely extension Location - Billinham, onsite 5 days a week About the Role We are seeking an experienced EUC Support Engineer to join a major end-user computing transformation programme. You will play a key role in supporting device migrations, application readiness activities, endpoint refresh initiatives, and user onboarding across a complex enterprise environment. Working as part of a wider deployment and migration team, you will provide Level 2 support to end users, ensuring a smooth transition to new devices, applications, and workplace technologies while maintaining a high standard of customer service. Key Responsibilities Provide Level 2 support for end-user devices and business applications. Support device migration, deployment, and onboarding activities. Assist with application packaging, readiness assessments, testing, and validation. Troubleshoot application compatibility, performance, and user access issues. Support software installations, upgrades, and deployment activities. Work closely with deployment teams during migration and cutover periods. Manage incidents, service requests, and change activities in line with ITIL processes. Escalate complex issues to specialist Level 3 teams where required. Maintain accurate support documentation, knowledge articles, and ticket updates. Assist with endpoint refresh and hardware replacement programmes. Coordinate with business users to support testing and user acceptance activities. Identify recurring issues and contribute to continuous service improvement initiatives. Liaise with third-party vendors and support partners as needed. Required Skills & Experience Previous experience in a Level 2 Desktop, EUC, or Application Support role. Strong troubleshooting and root cause analysis skills. Experience supporting Windows desktop environments within enterprise organisations. Knowledge of: Windows 10 and Windows 11 Active Directory SCCM / Microsoft Configuration Manager Citrix and/or VDI environments Microsoft Office 365 Experience using ServiceNow or similar ITSM platforms. Understanding of software deployment and endpoint support processes. Ability to manage multiple priorities in a fast-paced project environment. Excellent communication and customer-facing skills. Desirable Experience Experience supporting Windows 11 migration projects. Device refresh or hardware deployment experience. Application testing and validation experience. Experience within highly regulated or large-scale enterprise environments. ITIL Foundation certification. GCS is acting as an Employment Business in relation to this vacancy.

Role - 3rd Line EUC Support Engineer Duration - 6 months with very likely extension Location - Billingham, onsite 5 days a week Spec - We're seeking an experienced Level 3 EUC Engineer to join a large-scale enterprise transformation and device migration programme within a highly regulated pharmaceutical manufacturing environment. This is a hands-on technical role focused on ensuring business-critical applications, endpoint technologies, and workplace services remain stable, secure, and operational throughout migration and deployment activities. You will act as the senior escalation point for complex technical issues, working across infrastructure, security, deployment, and application teams to support the successful delivery of a major workplace transformation programme. Key Responsibilities Provide Level 3 support for enterprise endpoint devices and applications across a complex IT environment. Act as the senior technical escalation point for application and EUC-related incidents. Design and implement technical solutions across the end-user computing landscape. Troubleshoot and resolve advanced application and endpoint issues. Support application readiness activities associated with device migration and workplace transformation projects. Investigate and remediate application compatibility issues across Windows environments. Coordinate application testing, validation, and user acceptance activities. Support software deployment, packaging, release management, and rollout activities. Work closely with EUC, Infrastructure, Networking, Security, and Project teams to resolve cross-functional technical challenges. Analyse logs, performance metrics, and system behaviour to perform root cause analysis. Support incident, problem, change, and release management processes in line with ITIL standards. Maintain technical documentation, support procedures, and knowledge base articles. Assist with application lifecycle management, upgrades, patching, and decommissioning activities. Support migration cutovers and deployment scheduling activities. Collaborate with third-party vendors and application owners to ensure successful onboarding and support. Ensure enterprise applications comply with organisational security and operational standards. Required Experience Proven experience in a Level 3 EUC, Desktop Engineering, Workplace Technology, or Application Support role. Strong troubleshooting, diagnostic, and root cause analysis skills. Experience supporting Windows-based enterprise applications and endpoint platforms. Experience working on large-scale IT transformation, migration, or deployment programmes. Experience with application packaging and deployment processes. Strong understanding of ITIL-based support environments. Experience working in complex enterprise organisations with multiple stakeholders. Ability to manage competing priorities within fast-paced project delivery environments. Excellent planning, coordination, and communication skills. Technical Skills Experience with the following technologies is highly desirable: Microsoft Windows 10 & Windows 11 Active Directory SCCM / Microsoft Endpoint Configuration Manager Citrix and VDI environments Application Packaging Endpoint Management Technologies Kiosk Mode and Secure Device Configurations Microsoft 365 Group Policy Software Deployment and Release Management Desirable Experience Experience working within pharmaceutical, biotechnology, life sciences, or other regulated industries. Exposure to GMP, GxP, or validated environments. Experience supporting device refresh, Windows 11 migration, or large-scale workplace transformation programmes. Familiarity with application validation and compliance-driven change controls. ITIL Foundation certification. GCS is acting as an Employment Business in relation to this vacancy.

Senior Kubernetes Platform Engineer - On-Prem / Bare Metal SC Cleared On-Site Contract Opportunity (OutsideIR35) GCS is supporting one of the world's leading technology companies on a highly technical infrastructure engineering programme. We're looking for an exceptional Kubernetes Platform Engineer with deep expertise in designing, building and securing Kubernetes infrastructure within bare-metal and on-premises environments. This is a hands-on engineering opportunity, working on complex, security-sensitive infrastructure where performance, resilience and security are critical. We're looking for builders, not simply engineers who maintain existing environments. The Opportunity You'll be responsible for building, deploying and enhancing Kubernetes infrastructure, working across the underlying compute, networking, security and observability layers. The role requires someone who understands Kubernetes beyond application deployment and can confidently engineer the infrastructure that supports it. Key Responsibilities Design, build and deploy production-grade Kubernetes clusters on bare-metal infrastructure. Engineer and optimise the underlying Linux, networking, storage and compute environments. Implement Kubernetes security controls, hardening and infrastructure-level security best practices. Design, deploy and improve logging and observability pipelines using tools such as Fluent Bit, OpenTelemetry and Grafana. Integrate platform logging and monitoring with wider security operations and SIEM tooling. Support network security monitoring and visibility across infrastructure and hardware network appliances. Improve the effectiveness of security tooling, including EDR, vulnerability scanners and antivirus solutions. Troubleshoot complex infrastructure challenges and continuously improve platform reliability, performance and security. Participate in an on-call rota supporting critical infrastructure. What We're Looking For Essential: Extensive hands-on Kubernetes engineering experience. Proven experience building Kubernetes clusters on bare metal or on-premises infrastructure , rather than simply operating existing environments. Strong Linux infrastructure engineering and networking knowledge. Solid understanding of platform security, infrastructure hardening and security-by-design principles. Ability to work independently on complex infrastructure engineering challenges. SC or DV security clearance. Highly Desirable: Experience with Kubernetes deployment technologies such as kubeadm, Kubespray, RKE2 or similar. Experience implementing logging and observability pipelines using Fluent Bit, OpenTelemetry, Grafana or similar technologies. Knowledge of network security monitoring and security operations. Experience with EDR, vulnerability management and infrastructure security tooling. Experience engineering infrastructure within highly secure or regulated environments. Why Consider This Opportunity? An opportunity to work alongside highly skilled engineers on technically demanding infrastructure projects for one of the world's most recognised technology companies. You'll be working at the infrastructure layer, solving complex engineering challenges and helping build secure, resilient Kubernetes environments from the ground up. Working arrangement: Fully on-site, with an on-call component. Security clearance: SC or DV clearance preferred; current clearance requirements to be confirmed. Interested? If you're an experienced Kubernetes infrastructure engineer with a genuine background in bare-metal deployments, we'd welcome a confidential conversation. GCS is acting as an Employment Business in relation to this vacancy.

QA Manager (Counterparty Credit Risk) - Banking - Contract Role - QA Manager (Counterparty Credit Risk) Rate - 800 per day (Inside IR35) Duration - 6 months with very likely extension Location - Liverpool street, London - Hybrid, 50% of the time in the office Spec - London Hybrid Working Financial Services An exciting opportunity has arisen for an experienced Test Manager to join a major financial services organisation and lead testing activities across a range of Counterparty Credit Risk (CCR) initiatives. This role will be responsible for defining and implementing the overall testing strategy, ensuring alignment with enterprise QA standards and governance frameworks, while driving continuous improvement across testing processes, controls and delivery practices. You'll work closely with technology, risk and business stakeholders, playing a key role in delivering high-quality solutions within a complex regulatory and risk-focused environment. The Role As Test Manager, you will provide leadership across all phases of the testing lifecycle, ensuring robust governance, effective stakeholder engagement and consistent quality delivery. Key responsibilities include: Defining and implementing test strategies for Counterparty Credit Risk programmes and projects Aligning testing approaches with enterprise QA standards, governance frameworks and delivery methodologies Reviewing and enhancing existing QA processes and testing practices Leading test planning, execution and reporting across SIT, UAT, regression and end-to-end testing phases Building and developing QA capabilities, including mentoring and supporting testing teams Establishing KPI and quality metrics covering test coverage, defect leakage, release quality and delivery performance Ensuring full traceability between requirements, test cases and defects Coordinating defect management, triage sessions and quality reviews Supporting release planning and go-live readiness assessments Managing testing risks, dependencies and delivery challenges Producing clear reporting for senior stakeholders, programme leadership and risk teams Ensuring adherence to audit, governance and regulatory requirements Required Experience We are looking for candidates who can demonstrate: Extensive experience as a Test Manager within banking or financial services Strong experience within Counterparty Credit Risk or closely related risk domains Proven ability to define and implement enterprise test strategies Experience managing large-scale SIT, UAT and end-to-end testing programmes Strong knowledge of QA governance, controls and audit requirements Experience building and improving testing frameworks, processes and teams Strong stakeholder management skills across business and technology functions Experience using tools such as JIRA, Xray, ALM or Azure DevOps Knowledge of SDLC, STLC and risk control frameworks Experience working within Agile, hybrid Agile or regulatory change programmes Desirable Experience Particular interest will be shown in candidates with experience across: Counterparty Credit Risk (CCR) SA-CCR Internal Model Methodology (IMM) Exposure at Default (EAD) Potential Future Exposure (PFE) Collateral and margining processes Trade lifecycle management Risk engines and risk aggregation platforms Murex, Calypso or similar risk technology platforms Data validation and reconciliation testing Regulatory change programmes Stress testing and back-testing frameworks Test automation approaches within data-intensive environments What We're Looking For Beyond technical expertise, we're seeking an individual who can: Challenge existing processes and identify opportunities for improvement Influence senior stakeholders across business, technology and risk functions Build credibility with both technical and non-technical audiences Drive quality throughout the delivery lifecycle Lead teams through complex testing challenges in a regulated environment Balance governance requirements with delivery objectives GCS is acting as an Employment Business in relation to this vacancy.

London Financial Services Hybrid Working We're looking for an experienced Senior EUC Engineer to join a growing Digital Employee Experience team within a global financial services organisation. This is an excellent opportunity for a Desktop, EUC or Endpoint Engineer who enjoys solving complex technical challenges and wants to work in an environment where engineering, automation and service improvement are valued just as highly as operational support. Rather than simply resolving tickets and moving on, you'll be encouraged to investigate root causes, work closely with other technology teams and help deliver long-term improvements that enhance the end-user experience across the organisation. This role would suit an experienced Desktop Support Engineer, 2nd Line Engineer, EUC Engineer, Endpoint Engineer or Workplace Technology Engineer looking to move into a more engineering-led environment. The Role You'll play a key role in supporting and improving the firm's end-user computing environment, working across desktop engineering, endpoint management, virtual desktop technologies and workplace support services. Responsibilities will include: Providing hands-on EUC, Desktop and TechBar support Troubleshooting complex Windows, hardware and software issues Supporting enterprise endpoint management technologies, including SCCM and modern management platforms Managing device builds, imaging, deployments and endpoint configuration Supporting Citrix and virtual desktop environments Investigating recurring incidents and identifying root causes Working with infrastructure and engineering teams to deliver permanent solutions Driving continuous service improvement initiatives Identifying opportunities for automation and process optimisation Maintaining high levels of customer satisfaction within a fast-paced enterprise environment Sharing technical expertise and supporting the development of colleagues across the team Skills & Experience We're keen to speak with candidates who have experience across several of the following areas: Desktop Engineering or EUC Support Windows 10 / Windows 11 SCCM / MECM Microsoft Intune Endpoint Management Citrix Virtual Apps & Desktops VDI Technologies ServiceNow Software Deployment & Packaging Device Imaging & Build Management Incident & Problem Management PowerShell Root Cause Analysis Automation & Continuous Improvement Experience within a large enterprise or financial services environment would be advantageous but is not essential. What We're Looking For We're interested in engineers who are naturally curious and enjoy understanding how things work. People who ask: Why did this happen? How can we prevent it happening again? Can this be automated? How can we improve the employee experience? You'll take ownership of technical issues, enjoy collaborating with others and be motivated by delivering long-term improvements rather than short-term fixes. GCS is acting as an Employment Business in relation to this vacancy.

AI Copilot Developer - Power Apps - Power platform - Banking - Hybrid Role - AI Copilot Developer Rate - 490 per day (Inside IR35) Duration - 6 months with very likely extension Location - Hybrid / Canary Wharf - 3 days per week in a Canary Wharf office Tech Stack Copilot Powerapps Power platform Javascript Role Development and support of low code Business applications using Power platform, M365, C#, JavaScript. You will collaborate closely with business analysts, business users and stakeholders to understand requirements, design innovative solutions, and bring them to life through development, testing, and deployment. Tasks Design, develop, test, and deploy AI-powered solutions using Microsoft Copilot Studio, Power Platform, and Microsoft 365 technologies. Build and maintain intelligent agents, conversational AI experiences, and automated business processes. Integrate AI solutions with enterprise systems, including Dataverse, SharePoint, Power BI, Microsoft Fabric, SQL, and other business applications. Collaborate with business stakeholders to gather requirements, identify AI opportunities, and deliver innovative solutions that improve efficiency and user experience. Apply best practices for security, governance, compliance, and Responsible AI to ensure enterprise-grade solutions. Support solution architecture, documentation, testing, deployment, and ongoing maintenance activities. Contribute to continuous improvement by identifying opportunities to leverage AI, automation, and low-code technologies to enhance business processes and decision-making. Provide technical support, troubleshooting, and knowledge sharing across AI, Copilot, and Power Platform initiatives GCS is acting as an Employment Business in relation to this vacancy.

Solutions Architect - Tier 1 Bank - Canary Wharf Role - Application Architect Duration - 6 months with very likely extension Location - Hybrid / Canary Wharf - 3 days per week in a Canary Wharf office Rate - 600 per day (Inside IR35) Experience - In depth understanding of Object Orientated programming concepts as well as of the full Software Development Life Cycle. Good understanding of MS .NET Framework environments. Knowledge and experience of Agile methodology Knowledge of Cloud and AI technologies that can be adopted into the workplace Extensive experience working as a software and solutions architect. Experience in designing of high-level concepts for software solutions. Experience in development of Azure cloud-based as well as on-prem solutions. DevOps and SCRUM experience Experience in Cloud migration planning and execution Tasks - Create and improve architectural standards for on premise and azure cloud software products, develop cloud migration procedures and guidelines. Assist in cloud migration projects, assess readiness and dependencies, optimize for the Cloud. Create and review blueprints for software products, provide guidance on improving architecture. Coding mission critical parts and performing code reviews. Assist on integrating AI technologies to improve existing systems. Ensure that applications are in line with compliance and regulatory standards and conduct regular security assessments of these applications. Technical writing (creating related documentation) Assist developers with any architecture related issues and queries. GCS is acting as an Employment Business in relation to this vacancy.

Role Description We are seeking a highly skilled Senior Fullstack Developer with deep expertise in React and strong experience deploying applications to cloud platforms, ideally Microsoft Azure (AWS experience also welcome). This role will focus on building, deploying, and optimising scalable, high-performance web applications that handle large volumes of data and integrate AI-driven components. You will work closely with backend engineers, cloud specialists, and AI teams to deliver intelligent, production- ready applications at scale. Key Responsibilities Design, build, and maintain scalable front-end applications using React, python and modern JavaScript/TypeScript. Build front-end solutions that support high data throughput, performance optimisation, and responsiveness at scale. Collaborate on the deployment of applications to cloud environments (Azure preferred; AWS acceptable). Integrate front-end applications with AI-powered services, including LLM-based APIs and workflows and Agentic AI systems Automation and orchestration services (particularly within Azure) Work with containerised environments (e.g. Docker) and contribute to cloud-native deployment pipelines. Support CI/CD processes and promote reliable, repeatable deployments. Required Skills / Experience Extensive experience as a Senior fullstack Developer or similar role. Expert knowledge of React & Python, including modern patterns, hooks, state management, and performance optimisation. Proven experience deploying applications to cloud platforms, ideally Microsoft Azure. Experience integrating front-end applications with APIs, microservices, and distributed systems. Familiarity with container technologies such as Docker and container-based deployment models. Experience working on applications that handle large datasets or high-traffic environments. Strong understanding of front-end performance, observability, and optimisation techniques GCS is acting as an Employment Business in relation to this vacancy.

Senior Full Stack Developer (React, Python & Azure AI) Location: London/ Hybrid Start: ASAP About the Opportunity We are seeking an experienced Senior Full Stack Developer to join a cutting-edge programme focused on delivering AI-powered solutions on Microsoft Azure. This initial workstream is dedicated to building an Agentic AI capability using Python and Azure technologies, working closely with business stakeholders to define the technical foundation, architecture, and product direction for a wider enterprise AI programme. This is an exciting opportunity to work on innovative AI initiatives, cloud-native applications, and large-scale data-driven solutions while helping shape future platform capabilities. The Role As a Senior Full Stack Developer, you will play a key role in designing, developing, and deploying modern web applications that integrate with AI-powered services and large-scale distributed systems. You will collaborate with cloud engineers, architects, data specialists, and AI teams to deliver scalable, secure, and high-performing solutions in Azure environments. Key Responsibilities Design, develop, and maintain scalable full-stack applications using React, Python, JavaScript, and TypeScript Build responsive, high-performance front-end solutions capable of handling large data volumes Develop and integrate APIs, microservices, and distributed systems Deploy and manage applications within Microsoft Azure environments Integrate applications with LLM-based services, Agentic AI workflows, and AI-driven platforms Work with containerised solutions using Docker and cloud-native deployment approaches Support and enhance CI/CD pipelines to ensure reliable and repeatable deployments Collaborate closely with architecture, cloud, and AI teams to deliver production-ready solutions Drive performance optimisation, observability, scalability, and application reliability Required Skills & Experience Essential Extensive experience as a Senior Full Stack Developer Strong expertise in: React JavaScript / TypeScript Python Deep understanding of modern React development: Hooks State management Component architecture Performance optimisation Proven experience deploying applications to cloud environments, ideally Microsoft Azure Strong experience integrating APIs, microservices, and distributed architectures Hands-on experience with Docker and containerised deployments Experience building applications that support high traffic volumes and large datasets Strong understanding of frontend performance, monitoring, and observability Experience working within Agile delivery teams Desirable Azure AI Services Azure OpenAI Agentic AI frameworks Azure Container Apps Azure Kubernetes Service (AKS) Infrastructure as Code Experience with AWS cloud platforms Exposure to enterprise-scale AI transformation programmes What You'll Be Working On AI-powered enterprise applications Agentic AI and intelligent workflow solutions Azure cloud-native platforms Large-scale data processing and visualisation solutions Production-grade deployment pipelines Modern React front-end architectures Ideal Candidate You are a hands-on Senior Engineer who enjoys solving complex technical challenges and building products that deliver real business value. You have strong cloud deployment experience, enjoy working with modern web technologies, and are excited by the opportunity to work at the forefront of AI and Azure innovation. Interested? If you have strong experience with React, Python, Azure cloud technologies, AI integrations, and modern full-stack development , we'd love to hear from you. Apply now to be part of a pioneering AI programme shaping the future of enterprise solutions. GCS is acting as an Employment Business in relation to this vacancy.

We're looking for a Senior AI Engineer to join a high-profile programme delivering AI-driven solutions using Python, Azure OpenAI, and LLMs . Key Responsibilities Build and enhance LLM-powered document extraction pipelines. Develop solutions for PDF processing, OCR, entity matching, and structured data extraction. Improve accuracy through testing, evaluation, and regression frameworks. Scale services using Azure, FastAPI, Terraform, and Azure DevOps. Collaborate with senior engineers and stakeholders to drive technical decisions. Essential Skills 5+ years' software engineering experience. 2+ years working with LLMs and Generative AI solutions. Strong Python and FastAPI development experience. Hands-on experience with Azure OpenAI and Azure cloud services. Experience processing and extracting data from complex documents. Strong testing and CI/CD experience. Desirable OCR solutions Databricks Energy sector or Public Sector experience Terraform and Cosmos DB This is an excellent opportunity to work on a cutting-edge AI programme with real technical ownership and a modern Azure-based technology stack. GCS is acting as an Employment Business in relation to this vacancy.