Test Triangle

Job Title: OpenShift Platform Lead - Virtualization Services Job Summary We are seeking an experienced OpenShift Platform Lead to own and manage our OpenShift-based virtualization platform that delivers enterprise VM hosting services. This role is responsible for the complete lifecycle management of the platform, including design, architecture, BAU operations, patching, upgrades, incident response, and driving platform stability. You will lead the implementation, work closely with SRE and operations teams, and enable seamless VM migration from legacy infrastructure. This is a hands on technical leadership role requiring deep OpenShift expertise and the ability to balance operational excellence with strategic platform evolution. Key Responsibilities Platform Leadership & Strategy Own the technical strategy and roadmap for the OpenShift Virtualization platform Define platform architecture, design patterns, and technical standards Lead platform lifecycle management including major/minor upgrades and Red Hat CoreOS updates Drive platform stability improvements and performance optimization initiatives Establish platform governance, compliance, and security policies Build relationships with Red Hat support and leverage Technical Account Management (TAM) Lifecycle & Operations Management Manage complete platform lifecycle from installation through upgrades to decommissioning Plan and execute OpenShift platform upgrades (4.x releases) with zero/minimal downtime Coordinate quarterly/monthly Red Hat CoreOS (RHCOS) patching cycles Oversee OpenShift Virtualization operator upgrades and feature enablement Maintain platform health through proactive monitoring and capacity planning Ensure platform meets defined SLAs and availability targets (99.9%+) Lead Major Incident response for platform-level issues (Sev 1/2) Perform root cause analysis (RCA) and implement preventive measures Collaborate with SRE team on incident postmortems and improvement plans Manage platform-related events including maintenance windows Coordinate emergency changes and rollback procedures Participate in on call rotation for critical platform escalations Change Implementation & Release Management Review and approve platform changes through Change Advisory Board (CAB) Plan and execute complex platform changes with risk assessment Implement infrastructure as code (IaC) practices using Ansible and Terraform Drive GitOps adoption for platform configuration management Coordinate release windows for platform updates with business stakeholders Ensure change documentation and runbook accuracy Lead VM migration strategy from VMware/legacy platforms to OpenShift Virtualization Design VM migration runbooks and automation workflows Create and maintain VM templates, golden images, and standardized configurations Enable application teams for self service VM provisioning Troubleshoot VM performance, networking, and storage issues Optimize VM placement, resource allocation, and cluster balancing Platform Stability & Performance Define and monitor key performance indicators (KPIs) for platform health Tune OpenShift control plane and worker node performance Optimize storage performance (ODF/Ceph) for VM workloads Configure network policies and OVN Kubernetes for optimal VM networking Drive continuous improvement initiatives based on operational metrics Required Qualifications Must Have Skills & Experience Experience Requirements 8 12 years of overall IT infrastructure experience 5+ years of hands on experience with Red Hat OpenShift Container Platform (4.x) 3+ years of experience with OpenShift Virtualization (KubeVirt) or similar VM hosting platforms 3+ years of experience in platform/infrastructure leadership roles 2+ years of experience with Red Hat Enterprise Linux (RHEL 7/8/9) and Red Hat CoreOS (RHCOS) Technical Skills Advanced OpenShift Virtualization knowledge (VMs, DataVolumes, CDI, live migration) Advanced Red Hat CoreOS and Machine Config Operator (MCO) experience Advanced Linux administration and troubleshooting (RHEL based) Advanced storage management (ODF/Ceph, Storage Classes, PV/PVC, CSI drivers) Advanced networking (OVN Kubernetes, Multus, Network Policies, SDN concepts) Advanced automation skills (Ansible, Bash scripting, Python) Intermediate Infrastructure as Code (Terraform, GitOps tools like ArgoCD/Flux) Intermediate observability platforms (Prometheus, Grafana, AlertManager) Platform Operations Proven experience managing platform lifecycle (installation, upgrades, patching) Strong incident management and major incident response experience Experience with change management processes and release coordination Demonstrated ability to perform root cause analysis and implement preventive measures Experience with capacity planning and performance tuning Track record of driving platform stability improvements Certifications Required (one or more) Red Hat Certified Specialist in OpenShift Administration Highly Desirable Red Hat Certified Architect (RHCA) certification Red Hat Certified Specialist in OpenShift Virtualization Experience with Red Hat Advanced Cluster Management (RHACM) Experience with Red Hat Advanced Cluster Security (RHACS/Stackrox) Experience with OpenShift on multiple infrastructures (bare metal, VMware, AWS, Azure) Nice to Have Certified Kubernetes Administrator (CKA) or CKS Experience with multi tenancy and namespace isolation strategies Knowledge of compliance frameworks (PCI DSS, HIPAA, SOC2, ISO 27001) Experience with backup solutions (Kasten K10, Veeam, Commvault) Programming skills in Go, Python, or Java Experience with hybrid/multi cloud architectures Key Success Metrics Successful upgrade completion rate: 100% with zero unplanned rollbacks Incident MTTR: VM migration velocity: Target VMs per month with Platform capacity utilization: % optimal range Change success rate: >98% first time success Some evening/weekend work required for maintenance windows

Overview Experience: Extensive experience with Microsoft Windows in financial / regulated organisations Responsibilities Collaborate across application and infrastructure teams to ensure seamless integration and delivery of complex technical solutions, engaging regularly with cross-functional groups to drive project success. Analyse functional requirements and translate business needs into detailed technical specifications, bridging the gap between business stakeholders and technical teams to deliver solutions aligned with organisational objectives. Proactively identify and resolve technical issues by monitoring systems and processes, implementing timely solutions to minimise disruption and maximise customer satisfaction. Employ a structured approach to problem management, addressing root causes and ensuring long-term stability. Participate actively in stakeholder and delivery team meetings to contribute technical insights, clarify requirements, and ensure project milestones are achieved. Communicate complex technical concepts clearly to both technical and non-technical audiences. Continuously evaluate and implement industry best practices by staying informed about emerging technologies and methodologies. Recommend and adopt improvements that enhance project outcomes and uphold high standards of technical excellence. Demonstrate strong analytical and problem-solving skills to address complex challenges efficiently, supporting the organisation's strategic goals and driving ongoing improvement across all technical initiatives. Technical Skills Proficiency in Windows Operating Systems - Demonstrated expertise in administering, configuring, and troubleshooting Windows-based environments. This includes a thorough understanding of system internals, user and group management, security policies, and performance optimisation within enterprise-scale deployments. Hands-on Experience with DevOps Toolchains - Substantial experience utilising industry-standard DevOps tools for orchestration and configuration management, specifically Ansible and Jenkins. This encompasses the design, implementation, and maintenance of automated deployment pipelines. Advanced Scripting Capabilities - Strong background in developing and maintaining scripts using Python / Powershell and Shell (Bash). These scripting skills should be applied to automate data management processes, streamline operational workflows, and facilitate integration between disparate systems, thereby enhancing overall efficiency and reliability. Virtualisation and Containerisation Expertise - Proven experience working with VMware platforms, virtualisation technologies, and hypervisors. Familiarity with container orchestration solutions such as OpenShift is essential, including the deployment, scaling, and management of containerised applications in both development and production settings. Comprehensive Networking Knowledge - Solid understanding of networking fundamentals and their interaction with operating systems. This includes expertise in TCP/IP protocols, port allocation and management, firewall configuration, and network security best practices, ensuring robust and secure connectivity across all layers of the infrastructure. API Development and Integration Skills - Practical experience with Mulesoft and Postman for API development, testing, and lifecycle management. Capable of designing, implementing, and integrating APIs, with a particular focus on seamless interaction with Ansible playbooks and other automation frameworks to support end-to-end process automation and system interoperability. Additional information What additional skills will be good to have? (List out good to have skills and certifications)

A leading technology provider in the United Kingdom seeks a highly skilled technical professional with extensive experience in Microsoft Windows in regulated environments. The candidate will collaborate across teams, analyze requirements, and proactively address technical issues. Proficiency in Windows, DevOps tools like Ansible and Jenkins, and advanced scripting abilities are essential. The role offers opportunities to enhance project outcomes and uphold technical excellence in a dynamic environment.

A software development company in London seeks an OutSystems Developer to focus on building scalable low-code applications. Responsibilities include developing mobile and web applications, integrating with backend systems, and ensuring adherence to development standards. Candidates should have 2-5 years in OutSystems development, a strong grasp of application architecture, and experience with integrations. Knowledge of CSS and relational databases is beneficial for this role.

Location: London, UK. Mandatory Skills: OutSystems Job Overview The OutSystems Developer focuses on building scalable, secure, low code applications and workflow orchestrations using the OutSystems platform. The role blends business process understanding with application design, integrations, and front end/back end logic to deliver enterprise grade solutions. Key Responsibilities Build responsive web and mobile applications using OutSystems Service Studio. Design workflow orchestrations, process automation, and data models. Develop logic, integrations, and reusable UI patterns and modules. Implement role based access, security configurations, and performance optimisations. Integrate with backend systems (REST/SOAP APIs, databases, SAP, CRM). Build and maintain integrations ensuring reliability and security. Design asynchronous flows, event driven architectures, and external data connectors. Conduct unit and integration testing. Troubleshoot performance issues and fix defects across environments. Support deployments using LifeTime, CICD pipelines, and environment promotions. Work with cross functional teams on release planning and hyper care. Document architecture, modules, APIs, and change logs. Ensure adherence to OutSystems development standards and performance guidelines. Participate in code reviews, architecture discussions, and solution workshops. Required Skills & Experience 2-5 years of experience in OutSystems development (Traditional or Reactive Web / Mobile). Strong understanding of low code application architecture and lifecycle. Experience with integrations (REST, SOAP, OAuth, SQL, message queues). Basic understanding of CSS, JavaScript, and relational databases (SQL Server, Oracle). Knowledge of application security, performance tuning, and scalable app design. Good to Have OutSystems certifications (Associate, Professional, Tech Lead). Knowledge of cloud native deployments and microservices patterns. Experience in Agile / DevOps and CI/CD integration for OutSystems.

A leading technology firm in Greater London is seeking a Senior Cloud Engineer to contribute technical expertise within a cloud engineering team. This role involves architecting scalable Kubernetes environments on Google Cloud Platform (GCP) and ensuring robust security measures. The ideal candidate will have extensive experience in DevOps or Site Reliability Engineering, deployment of production-grade Kubernetes clusters, and proficiency in CI/CD pipelines, alongside programming skills in Python, Go, and Bash. Join this dynamic team to drive innovative cloud solutions.

Our Cloud Engineering team is seeking a seasoned and passionate Senior Cloud Engineer with deep hands on development and cloud engineering expertise. In this role, you will serve as a key technical contributor within a cloud focused engineering team, working on one of the Group's flagship initiatives-delivering a strategic platform on Google Cloud Platform (GCP) that enables the business to realise next generation services aligned with the Bank's long term vision. Key Responsibilities Architect, implement, and maintain highly resilient, scalable, and secure Kubernetes environments on GCP. Engineer and optimise Kubernetes infrastructure to support multitenant workloads, ensuring robust isolation, resource efficiency, and operational scalability. Design and enforce strong security controls, including OPA Gatekeeper policies, fine grained RBAC, mTLS enforcement, and secure service mesh configurations. Build, maintain, and enhance CI/CD pipelines enabling automated testing, seamless deployments, and continuous integration. Diagnose and resolve complex system level issues related to performance, scalability, networking, and automation. Collaborate with cross functional teams to deliver cloud native solutions aligned with engineering best practices and business goals. Required Skills & Experience Core Cloud & DevOps Competencies Extensive experience in DevOps or Site Reliability Engineering (SRE) roles across consumer or SaaS environments. Strong expertise in deploying and managing production grade Kubernetes clusters and containerised services. Hands on experience with Kubernetes (k8s) and Containers in live, high availability environments. Proven experience designing and implementing CI/CD pipelines for automated build, test, and deployment workflows. Proficiency in programming languages such as Python, Go, and Bash for automation and tooling. Demonstrated ability to take ownership of engineering initiatives and drive them to successful completion. Strong experience developing and managing Infrastructure as Code (IaC) using Terraform. Exposure to managing the full product lifecycle of cloud native core services. Hands on experience with GCP infrastructure and services. Deep understanding of cloud networking concepts such as Hybrid Connectivity, VPN, NAT, IPAM, DNS, and routing. Strong knowledge of cloud security including KMS, PKI, encryption standards, and least privilege access principles. Experience with Service Mesh technologies such as Istio or Anthos for secure service to service communication and observability. Competence in managing Istio telemetry, sidecar injection, and enforcing mTLS. Experience with Anthos Config Management, GitOps driven provisioning, and Backstage GitOps workflows. Understanding of shared Kubernetes services such as CoreDNS, cert manager, Dynatrace, Cloudability, and Infoblox. Familiarity with OPA Gatekeeper for policy enforcement and tenant isolation. Security, Observability & Performance Strong security mindset with a proven track record of designing secure, resilient cloud native systems. Experience implementing observability stacks including Prometheus, Dynatrace, and OpenTelemetry. Deep understanding of Linux internals, system performance tuning, and troubleshooting. Familiarity with Aqua Security for container runtime protection. CI/CD & Automation Tooling Hands on experience with Harness CI/CD for secure and automated deployment workflows. Professional Attributes Excellent verbal, written, and interpersonal communication skills with the ability to explain complex technical concepts clearly. Ability to work effectively in fast paced, dynamic environments and adapt quickly to change. Strong analytical and problem solving abilities with a focus on delivering high quality outcomes.