Onyx-Conseil

Onyx-Conseil is seeking a C# .NET Software Developer with 3-5 years of proven experience to join their dynamic team in London. The role involves developing pricing toolsets, re-architecting the middle office platform, and maintaining existing systems. Candidates with knowledge of FX trade processing and the FIX protocol are preferred. A Computer Science degree is preferred. The position offers a salary between £50K and £75K, providing a fast-paced work environment and significant autonomy.

Infrastructure Network Engineer Manchester £50,000 - £60,000 + Benefits Excellent opportunity for a hands on Network Engineer to join a growing infrastructure team within a large, multi site environment. This role will suit someone who has real experience building and configuring network infrastructure from the ground up, not just maintaining existing systems. This organisation is a well-established UK business operating across secure and highly regulated environments, with a large national footprint. They are investing heavily into their infrastructure function, with multiple hires being made to support growth and improve capability across a complex estate of over 90 sites. In this role, you will take ownership of network infrastructure across the business, working within a centralised team based out of Manchester. You will be involved in hands on configuration, installation and ongoing improvement of Cisco based networks, supporting both project delivery and BAU activity. The role is particularly focused on engineers who have physically built and deployed network environments, including firewalls and core switching infrastructure. The ideal candidate will have strong Cisco experience, particularly with ASA and Firepower, and will be confident working in a hands on capacity across routing, switching and firewall configuration. You will also be comfortable mentoring others and sharing knowledge within the team, helping to raise the overall capability of the function. This is a fantastic opportunity to join a growing team where you can have real ownership of infrastructure, work across a large estate, and play a key role in ongoing network improvements and projects. The Role Configure, build and support network infrastructure across 90+ sites Work hands on with Cisco ASA, Firepower, Catalyst and Nexus technologies Deliver network upgrades, installations and improvement projects Troubleshoot and resolve network issues across a multi site environment Support documentation, patching and compliance across the network estate The Person Strong hands on Cisco experience, including ASA and Firepower Experience building and deploying network infrastructure (not just support) Good knowledge of routing, switching and WAN environments Able to mentor others and share technical knowledge within a team Full UK driving licence and able to obtain SC clearance Rise Technical Recruitment Ltd acts an employment agency for permanent roles and an employment business for temporary roles. The salary advertised is the bracket available for this position. The actual salary paid will be dependent on your level of experience, qualifications and skill set and will be decided by our client, the employer. Rise are not responsible or liable for any hiring decisions made by the end client. We are an equal opportunities company and welcome applications from all suitable candidates.

Power Platform Developer 6 Month contract initially + Extensions Based: Wokingham -onsite Rate: £Market rates p/d - (via Umbrella company) We have a great opportunity with a world leading organisation where you will be provided with all of the support and development to succeed. A progressive organisation where you can really make a difference. We have a great opportunity for a Power Platform Developer to join the team. Design, build, and deploy Power Apps Canvas applications for the Operator Portal, covering dashboard, letter management, and audit trail screens. Implement Power Automate flows to enable dual-approval workflows, configure SQL and Dataverse connectors for secure data access, and ensure responsive interfaces with RBAC integration. Collaborate with stakeholders to refine requirements, optimize performance, and align delivery with organizational standards. Your responsibilities: Build Canvas Apps with responsive layouts (containers, breakpoints, adaptive controls). Develop Operator Portal modules: Dashboard (KPIs, filters, drill-downs) Letter management (create, edit, versioning, status) Audit trail (change history, user actions, timestamping) Implement Power Automate flows for dual-approval (parallel/serial approvals, escalation, notifications). Configure and secure SQL/Dataverse connectors (connection references, environment variables). Enforce RBAC using Dataverse security roles, Azure AD groups, or SharePoint permissions where applicable. Validate data and business rules via Power Fx and Automate flow conditions. Optimize app performance (delegation, caching, efficient queries, component reuse). Create documentation: solution architecture, data model, flow diagrams, and admin runbooks. Adhere to ALM practices with Power Platform solutions, environments, and DevOps pipelines. Collaborate with cross-functional teams; participate in demos, UAT, and production release. Key Skills & Experience: Power Apps (Canvas Apps): Responsive design, components, Power Fx, forms & galleries, theming. Power Automate: Approval flows, error handling, retries, pagination, monitoring. Data & Connectors: SQL Connector, Dataverse, connection references, environment variables. Security & Access: RBAC, Dataverse security roles, Azure AD groups, field-level/security roles. UI/UX: Wireframing, accessibility, usability heuristics, consistent navigation and app patterns. DevOps/ALM: Solution packaging, environment strategy, Git, Azure DevOps pipelines. Quality: Unit testing with test harness components, flow testing, performance tuning, logging. Hands-on Power Platform Developer with proven experience building Power Apps Canvas applications and Power Automate workflows for business-critical portals. Skilled in designing responsive UI/UX, implementing RBAC (role-based access control), configuring SQL/Dataverse connectors, and delivering features such as dashboards, letter management, and audit trails. Adept at translating business processes into scalable, secure, and maintainable solutions with strong focus on governance and best practices. Essential skills/knowledge/experience: Must Have Project Experience: Delivered at least 2 production-grade Canvas Apps with SQL/Dataverse backends. Implemented approval workflows using Power Automate (multi-step, audit-friendly). Applied RBAC and environment governance (security roles, solution-aware components). Bonus / Nice-to-Have: Model-driven apps, Power Pages, and PCF controls. Custom connectors, Graph API integration, and Azure Functions back-end services. Dataverse data modeling, business rules, and plug-in basics. Experience with ALM via Azure DevOps (build/release pipelines for solutions). Knowledge of CoE Starter Kit, DLP policies, and tenant governance. This is an excellent opportunity on a great project of work, If you are looking for your next exciting opportunity, apply now for your CV to reach me directly, we will respond as soon as possible. LA International is a HMG approved ICT Recruitment and Project Solutions Consultancy, operating globally from the largest single site in the UK as an IT Consultancy or as an Employment Business & Agency depending upon the precise nature of the work, for security cleared jobs or non-clearance vacancies, LA International welcome applications from all sections of the community and from people with diverse experience and backgrounds. Award Winning LA International, winner of the Recruiter Awards for Excellence, Best IT Recruitment Company, Best Public Sector Recruitment Company and overall Gold Award winner, has now secured the most prestigious business award that any business can receive, The Queens Award for Enterprise: International Trade, for the second consecutive period.

Onyx-Conseil is seeking a C# .NET Software Developer in London with 3 to 5 years experience. The role involves developing financial trading systems and requires an understanding of FX instruments. Responsibilities include building the in house middle office platform and integrating APIs. Essential skills include Microsoft web technologies and relational database experience. The salary for this position is between £60K and £75K, providing a chance for significant impact in a dynamic environment.

C# .NET Software Developer with FX and Fixed Income Our Client is a niche boutique broker specialising in FX. They are looking to recruit a C# .NET Software Developer with at least 3 to 5 years proven track record of developing with C# .NET. The Client would like meet candidates ideally with some understanding Trading Floor projects to include Fixed Income, Risk Management, Swap Options and FX. You need to be resilient as you will be working closely with traders and developing financial trading systems so an understanding of FX instruments would be very useful. The Company is a fast growing dynamic brokerage firm, specialising in currency options and interest rate swaps. They are seeking a talented technologist to join the London team. You will be working in a fast paced, delivery focused environment where you will get the opportunity to make a genuine impact on the business rather than just 'making up the numbers'. Initially reporting to the CTO, the successful candidate will become a key member of the global team. There will be a large amount of autonomy in the role, giving the candidate the opportunity to showcase their development talents. Responsibilities Re-architecting and building the in-house middle office platform and integrating with a new trading platform. Developing pricing toolsets Integrating to external reporting/tradeflow and pricing APIs. Maintaining the company's daily operation on the existing platforms. Essential skills Minimum 3 to 5 years experience of Microsoft web technologies (C#, Core MVC) Relational database experience (SQL Server) Proactively able to build relationships with stakeholders: sales, brokers, middle office, external vendors. Ability to produce clean, well-written, fully tested production ready software. Desirable skills Knowledge of the FIX protocol Knowledge of FX trade processing Basic knowledge of Foreign exchange products (vanilla/exotic options, fx cash) ( training will be given) Qualifications Computer Science related degree preferred. At least 3 years experience in a comparable development role. The Client is based in the City of London. The salary for this role will be £50K - £75K.

C# .NET Software Developer with FX and Fixed Income Our Client is a niche boutique broker specialising in FX. They are looking to recruit a C# .NET Software Developer with at least 3 to 5 years proven track record of developing with C# .NET. The Client would like meet candidates ideally with some understanding Trading Floor projects to include Fixed Income, Risk Management, Swap Options and FX. You need to be resilient as you will be working closely with traders and developing financial trading systems so an understanding of FX instruments would be very useful. The Company is a fast growing dynamic brokerage firm, specialising in currency options and interest rate swaps. They are seeking a talented technologist to join the London team. You will be working in a fast paced, delivery focused environment where you will get the opportunity to make a genuine impact on the business rather than just 'making up the numbers'. Initially reporting to the CTO, the successful candidate will become a key member of the global team. There will be a large amount of autonomy in the role, giving the candidate the opportunity to showcase their development talents. Responsibilities Re architecting and building the in house middle office platform and integrating with a new trading platform. Developing pricing toolsets Integrating to external reporting/tradeflow and pricing APIs. Maintaining the company's daily operation on the existing platforms. Essential skills Minimum 3 to 5 years experience of Microsoft web technologies (C#, Core MVC) Relational database experience (SQL Server) Proactively able to build relationships with stakeholders: sales, brokers, middle office, external vendors. Ability to produce clean, well written, fully tested production ready software. Desirable skills Knowledge of the FIX protocol Knowledge of FX trade processing Basic knowledge of Foreign exchange products (vanilla/exotic options, fx cash) (training will be given) Qualifications Computer Science related degree preferred. At least 3 years experience in a comparable development role. The Client is based in the City of London. The salary for this role will be £60K - £75K.

A recruiting firm is seeking a Senior Python Developer with 5 to 8 years of experience in software development. The role requires excellent skills in Python, back-end architecture design, and the ability to troubleshoot existing applications. Familiarity with Docker, Django, and MongoDB is a plus. This position offers flexibility to work remotely from anywhere in Europe, with a contract duration of 6 months. Candidates should submit their CV, daily rate, and availability for consideration.

Senior Python Developer Our Client is looking to recruit a seasoned Senior Python Software Developer with at least 5 to 8 years experience of developing software in Python. Excellent technical excellence in Python. Excellent verbal communication skills (English a must). Ability to provide recommendations for the e2e architecture infrastructure. Proven experience with designing back-end architectures. Understanding of application performance tuning and resource usage. Ability to troubleshoot existing scripts and do point bug fixes / application redesign. Highly experienced in multiprocessing, multiprocessing, and asynchronous python development (asyncio module). Experience with Docker containers, micro services, and CI/CD pipeline a plus. Experience with Django, Flask is a plus. Working knowledge with MongoDB, JSON, sync/async architecture. Working knowledge of networking theory (TCP/IP) or strong desire to learn it. Collaborate with other engineers and people in the organization to improve our solution delivery. Believe in Lean/Agile principles and actively incorporate them in the organization. Care about craft and strive towards producing high-quality code. High degree of autonomy, self-learning and problem solving is expected. Enjoy working in a team and collaborating on projects and codebases. This position can be based anywhere in Europe. The rate will depend upon the level of expertise. The duration of this contract assignment is 6 months. Do send your CV to us in Word format along with your daily rate and availability. Start date: As soon as possible. Location: London, England, United Kingdom.

As a Senior Network Engineer at CGI, you will play a pivotal role in safeguarding and advancing the networks that power our clients' most critical missions. You will help shape resilient, secure, and scalable infrastructure while contributing to innovative integration and design projects that drive industry transformation. This role offers the chance to take meaningful ownership of complex challenges, collaborate with expert teams, and apply your creativity to deliver future ready network solutions. Supported by CGI's strong engineering community, you'll make a lasting impact across high value programmes while continuously growing your skills in a dynamic and trusted environment. We offer a competitive salary, excellent pension, private healthcare, plus a share scheme (3.5% + 3.5% matching) which makes you a CGI Partner not just an employee. We are committed to inclusivity, building a genuinely diverse community of tech talent and inspiring everyone to pursue careers in our sector, including our Armed Forces, and are proud to hold a Gold Award in recognition of our support of the Armed Forces Corporate Covenant. Join us and you'll be part of an open, friendly community of experts. We'll train and support you in taking your career wherever you want it to go. Due to the secure nature of the programme, you will need to hold UK Security Clearance or be eligible to go through this clearance.

CGI's Space, Defence and Intelligence business unit focuses on delivering contemporary and innovative technical solutions for the government. Role Overview We are looking for an experienced site reliability engineer to join a cross functional team that works with clients to define, guide, and assure the delivery of integrated mission critical solutions. Responsibilities • Define and support the reliability of secure, mission critical systems for government agencies. • Collaborate with client teams to design, implement, and maintain solutions that support high level security and operational requirements. • Act as a liaison between technical teams and client stakeholders to ensure continuous service availability. Security Clearance Due to the secure nature of the project, candidates must already hold or be eligible for a high level UK Security Clearance. Eligibility requires: • Sole British nationality. • Resident in the UK for the past 10 years. • No absence outside the UK exceeding 28 consecutive days within the last five years. Location & Working Hours Primarily based at a secure client site requiring attendance five days per week. Occasional flexibility may be granted if business needs and security constraints allow. Benefits Competitive salary, pension, private healthcare coverage, and a share scheme (3.5% + 3.5% matching) designed to recognise employees as members of CGI.

Onyx-Conseil is looking for a Senior Network Engineer to safeguard and advance critical networks in the United Kingdom. This role involves tackling complex challenges, collaborating with expert teams, and delivering innovative network solutions. The candidate should have proven experience in network design, be eligible for UK Security Clearance, and be committed to inclusivity. The position offers a competitive salary, excellent pension, and private healthcare, fostering a dynamic environment for career growth.

Overview At CGI, you will shape the design of secure, mission critical systems that deliver real impact across the Space, Defence and Intelligence sector. As an IT Solution Architect, you will define and assure end to end cloud and infrastructure solutions, ensuring they are scalable, secure and aligned to strategic outcomes. Working with clients, partners and engineering teams, you will take ownership of architectural decisions, bring innovative thinking to complex challenges, and grow your expertise within a collaborative and supportive environment. Responsibilities Define and assure end to end cloud and infrastructure solutions, ensuring scalability, security and alignment to strategic outcomes. Take ownership of architectural decisions across projects. Bring innovative thinking to complex challenges and support engineering teams. Qualifications Eligible to hold UK Security Clearance or able to undergo the clearance process. Experience in architecture of secure, mission critical systems. Location This position is based on site near Gloucester or in Central London, 5 days a week. Benefits Competitive salary, excellent pension, private healthcare and a share scheme (3.5% + 3.5% matching) that makes you a CGI Partner, not just an employee. Inclusive Workplace We are committed to inclusivity, building a genuinely diverse community of tech talent and inspiring everyone to pursue careers in our sector, including our Armed Forces; we proudly hold a Gold Award in recognition of our support of the Armed Forces Corporate Covenant.

Role Title: Enterprise Architect Location: Solihull Duration: 12/09/2026 Days on site: 2-3 Rate INSIDE IR35 £492.25 MUST BE THROUGH UMBRELLA Role Description We are seeking an experienced Solution/Enterprise Architect to support project delivery with functional scoping and devise Information System (IS) level architecture solutions that prioritize consistency, adaptability, and sustainability, while ensuring compliance with set architecture governance framework and its processes. Required Skills and Experience Over 5+ years in an IT Architecture role, preferably within Financial Services Excellent communication skills, both written and spoken. Effective requirements elicitation and presentation skills Ability to operate across multiple engagements concurrently and assume architectural responsibility. Previous experience developing .Net applications Experience architecting Microsoft .NET applications Experience with SQL server, Kubernetes, Postgres, NoSQL Knowledge of TOGAF and ITIL Experience of working with commercial off the shelf and bespoke solutions Methodical, organized and results-driven communicator with great attention to detail Adaptability and ability to collaborate with diverse teams in different environments and stakeholders at all levels Desirable Skills and Experience TOGAF Practitioner certification ITIL certification Experience with architecture tools such as Orbus iServer and MS Visio. Domain Driven Design, Modelling - Relationships, topologies, Sequence Diagrams, UML, ArchiMate etc. Understanding of Automation, testing and development pipelines Practical knowledge of Agile, DevOps, CI/CD Key Role Responsibilities Develop and evolve existing and future IS (Information System) architecture based on set architecture principles and consistent with company frameworks Design .NET and data solutions, with security and production infrastructure stakeholders, supporting the business requirements and aligned with BNPP PF strategy. Collaborate with other project team members in the functional scope definition of projects Collaborate with stakeholders in the definition of technical roadmaps for IT solutions Support project managers for project build plan creation and cost estimation Assess solutions and creation of technology or application roadmaps Support delivery of the Enterprise Architecture capability Engage with global teams to manage projects through the appropriate governance process including where applicable submitting PSD's, presenting at COLEC, ITVC, PANO, local IC, etc. Provide support and assist the project team: help prepare architecture briefs, ensuring consistency with the established framework Engage in Research and Design to evaluate and propose technologies to complement business strategy and IT roadmap Please send latest CV LA International welcome applications from all sections of the community and from people with diverse experience and backgrounds.

Onyx-Conseil is seeking an IT Solution Architect to design secure, mission-critical systems that have real impact across the Space, Defence, and Intelligence sector. This role involves ensuring end-to-end cloud and infrastructure solutions are scalable and secure, along with taking ownership of architectural decisions. Ideal candidates will be eligible for UK Security Clearance and have a solid background in secure systems architecture. Competitive salary, pension, private healthcare, and a share scheme are included.

A leading consultancy firm is seeking an experienced Enterprise Architect in Solihull to support project delivery by devising Information Systems architecture solutions. The role requires over 5 years in IT Architecture, preferably in Financial Services, and a strong background in .NET application development. You will collaborate across teams to define functional scopes and enhance architecture based on business needs. A great opportunity to engage with diverse stakeholders and ensure alignment with governance frameworks.

CGI's Space, Defence and Intelligence business unit focuses on delivering contemporary and innovative technical solutions for government agencies. We are currently looking for experienced Test Engineers to join our cross functional team, helping define, guide and assure the delivery of integrated solutions. Responsibilities Help define, guide and assure the delivery of integrated solutions. Qualifications High level of UK Security Clearance, or eligibility to obtain it. Must be a sole British national and have resided in the UK for the past 10 years. Must not have spent more than 28 consecutive days outside the UK within the last five years. Preferred experience as a Test Engineer in technical solutions for government agencies. The role is primarily based on a secure client site and requires attendance on site five days per week. Occasional flexibility may be available where business needs and security constraints allow, with arrangements agreed in advance with the project team.

At CGI, you'll play a pivotal role in helping organisations modernise how they build, run, and evolve their digital applications using cloud technologies. Responsibilities Design cloud native application architectures that enable innovation, scalability, and measurable business value. Work closely with product teams, engineers, and clients to translate business goals into modern application solutions, shape technical direction, and guide delivery from concept to production. Take ownership of complex challenges and support the delivery lifecycle. Benefits Competitive salary Excellent pension scheme Private healthcare Share scheme (3.5% + 3.5% matching) Requirements UK Security Clearance or eligibility to obtain it Position available in London or Gloucester

Onyx-Conseil is seeking experienced Test Engineers to join the team in Greater London. The role focuses on defining and assuring the delivery of integrated solutions for government agencies. Candidates must have a high level of UK Security Clearance or eligibility, must be sole British nationals, and have resided in the UK for the past 10 years. The job requires on-site attendance five days a week, with some flexibility possible under specific conditions.

Role Overview As an Identity Solutions Engineer, you'll play a pivotal role in designing and deploying a new, on premise Microsoft based identity platform that delivers resilience, scalability, and trust. This greenfield project protects critical national infrastructure and enables seamless access for thousands of users. Key Responsibilities Design, deploy and maintain a secure, on premise Microsoft identity platform. Collaborate with architects and engineers to define requirements and drive technical excellence. Support the transformation of client environments through innovation and collaboration. Ensure platform resilience, scalability, and trust for critical systems. Qualifications Hold a valid UK Security Clearance. Experience with Microsoft identity technologies (e.g., Azure AD, Active Directory Federation Services, etc.) is required. Strong problem solving and communication skills. Benefits Competitive salary, excellent pension, private healthcare and a share scheme (3.5% + 3.5% matching). The role is based on site in Chippenham, 5 days a week.

Onyx-Conseil seeks an Agile Delivery Lead to drive digital transformation across public and commercial sectors. This hybrid position involves guiding teams and influencing stakeholders to adopt agile practices. Ideal candidates should have experience with complex programmes and the ability to hold UK Security Clearance. The role offers a competitive salary, private healthcare, and a culture that supports career growth and inclusivity. Join a community committed to delivering high-impact solutions.