6 senior platform engineer jobs found in London

Principal Java Engineer (Individual Contributor) 6-Month Contract | Outside IR35 | Paddington (3 days/week) We are partnering with a leading UK retail organisation on a significant payments and platform transformation. We seek a Principal Java Engineer to join as a hands-on individual contributor, playing a pivotal role within a dynamic engineering team. This technically demanding position centres on designing, building, and scaling high-volume, mission-critical payment systems. You will remain deeply involved in coding while influencing design and technical direction. The Role As a Principal Java Engineer, you will design and develop scalable Back End services that facilitate secure payment transactions at scale. The environment is modern, cloud-native, and prioritises event-driven architecture and high performance. Key Responsibilities Design and develop Back End services using Java (Spring Boot or Micronaut) Build systems supporting secure, high-volume payment...

Lead/Staff Full-Stack Engineer (Individual Contributor Focus) 6-Month Contract | Outside IR35 | Paddington (3 days/week) We are partnering with a prominent consumer platform undergoing a major digital transformation and seek a Lead/Staff Full-Stack Engineer to join as a hands-on contributor with strong end-to-end ownership. This role involves full-stack development across Back End and Front End, coupled with technical ownership of solutions, focusing on building scalable, high-quality systems within a modern cloud-native environment. About the Role As a Lead/Staff Full-Stack Engineer, you will design and deliver comprehensive solutions spanning Back End services, Front End applications, and cloud infrastructure. You will work in a modern, collaborative environment prioritising performance, reliability, and user experience. Key Responsibilities Design and develop full-stack solutions balancing Back End robustness with exceptional user experiences Build and maintain...

Senior Scientific Data Scientist / Pipeline Engineer Remote / Hybrid Oxford 6 Month Contract Outside IR35 £400 to £550 per day Overview A technology-enabled drug discovery company is looking for a Senior Scientific Data Scientist to design, build and maintain the analytical pipelines that power its data-driven discovery platform. The business combines automated wet-lab experimentation, proprietary analytical pipelines and deep scientific expertise to generate high-quality, reproducible biological datasets at scale. This data supports AI-driven discovery work across areas including oncology, immunology and neurodegeneration. This role would suit a scientist-turned-coder or scientific data scientist with strong Python skills, statistical modelling experience and a background working with bioassay or experimental biology data. The Role You will build and improve Python-based analytical pipelines for diverse bioassay datasets, including biochemical,...

Senior Scientific Data Scientist / Pipeline Engineer Remote / Hybrid Oxford 6 Month Contract Outside IR35 £400 to £550 per day Overview A technology-enabled drug discovery company is looking for a Senior Scientific Data Scientist to design, build and maintain the analytical pipelines that power its data-driven discovery platform. The business combines automated wet-lab experimentation, proprietary analytical pipelines and deep scientific expertise to generate high-quality, reproducible biological datasets at scale. This data supports AI-driven discovery work across areas including oncology, immunology and neurodegeneration. This role would suit a scientist-turned-coder or scientific data scientist with strong Python skills, statistical modelling experience and a background working with bioassay or experimental biology data. The Role You will build and improve Python-based analytical pipelines for diverse bioassay datasets,...

Network Security Engineer - 3-6 months - Outside IR35 We're hiring a Network Security Engineer to join one of our customers. This is a hands-on role for a highly skilled network and security engineer with strong service provider experience. Responsibilities: Manage and optimise the core network for performance, resilience, and uptime. Support core firewalls, switches, and routing platforms across data centre and edge environments. Automate network tasks and provisioning using Python, Ansible, and REST APIs. Maintain routing, peering, IP addressing, and network policies. Work closely with SOC/NOC teams to ensure security, stability, and compliance. Follow and enforce change control and operational best practices. Design and deploy Managed LAN, Wireless, and Security solutions. Deliver Fortinet solutions including FortiGate, FortiSwitch, FortiAP, FortiManager, and FortiAnalyzer. Implement Cisco routing and Cisco Meraki solutions for customer environments....

We're recruiting a Senior Azure DevOps Engineer to join a growing technology organisation operating at scale in mission-critical, cloud-first environments. You'll play a key role in designing, automating, and improving Azure-based infrastructure and CI/CD pipelines, enabling engineering teams to deliver reliable, secure, high-performance services. This is a hands-on senior role focused on automation, cloud optimisation, and proactive operational excellence-not fire-fighting. What you'll do: Design and run Azure cloud infrastructure at scale Build and standardise CI/CD pipelines and IaC using Bicep Support containerised platforms (Docker, Kubernetes/AKS) Improve monitoring, security, reliability, and cost efficiency Partner closely with software engineering and QA teams What we're looking for: Strong Azure DevOps/cloud engineering experience CI/CD, IaC, and containerisation expertise Passion for automation, reliability, and best practice In terms...