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4 senior backend developer jobs found

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Hybrid 6 Months or more senior backend developer
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Contract Spy
Oct 23, 2026
6 Months or more
Senior Backend Developer - SC Cleared at DBT, Cardiff/Remote, 6 Months, £Contract Rate
Contract Spy Hybrid (Cardiff, UK)
PLEASE NOTE: SC Clearance is an essential requirement for this role, as a minimum you must be willing & eligible to undergo checks. Please note, due to the exceptional requirements of this position (short-term nature of this role and speed at which we require a postholder in situ) preference may be given to candidates who meet all of the essential criteria and hold active security clearance.   As a Senior Developer you will play a key role in delivering robust and maintainable software that meets user needs. You will contribute across the full software development lifecycle, from design and implementation through to deployment and production support. You will build a deep understanding of the wider service and use that knowledge to solve technical problems, improve system reliability, and help shape practical solutions. Alongside your development work, you will contribute to a strong engineering culture by reviewing code, sharing expertise, and supporting...
Contract Spy
Oct 23, 2026
6 Months or more
Senior Backend Developer - SC Cleared at DBT, Belfast/Remote, 6 Months, £Contract Rate
Contract Spy Hybrid (Belfast, UK)
PLEASE NOTE: SC Clearance is an essential requirement for this role, as a minimum you must be willing & eligible to undergo checks. Please note, due to the exceptional requirements of this position (short-term nature of this role and speed at which we require a postholder in situ) preference may be given to candidates who meet all of the essential criteria and hold active security clearance.   As a Senior Developer you will play a key role in delivering robust and maintainable software that meets user needs. You will contribute across the full software development lifecycle, from design and implementation through to deployment and production support. You will build a deep understanding of the wider service and use that knowledge to solve technical problems, improve system reliability, and help shape practical solutions. Alongside your development work, you will contribute to a strong engineering culture by reviewing code, sharing expertise, and supporting...
Contract Spy
Oct 23, 2026
6 Months or more
Senior Backend Developer - SC Cleared at DBT, London/Remote, 6 Months, £Contract Rate
Contract Spy Hybrid (London, UK)
PLEASE NOTE: SC Clearance is an essential requirement for this role, as a minimum you must be willing & eligible to undergo checks. Please note, due to the exceptional requirements of this position (short-term nature of this role and speed at which we require a postholder in situ) preference may be given to candidates who meet all of the essential criteria and hold active security clearance.   As a Senior Developer you will play a key role in delivering robust and maintainable software that meets user needs. You will contribute across the full software development lifecycle, from design and implementation through to deployment and production support. You will build a deep understanding of the wider service and use that knowledge to solve technical problems, improve system reliability, and help shape practical solutions. Alongside your development work, you will contribute to a strong engineering culture by reviewing code, sharing expertise, and supporting...
Contract Spy
Oct 22, 2026
6 Months or more
Senior AI Infrastructure Engineer (Agent Runtime Platforms) at UST, London/Remote, 6 Months, £Contract Rate
Contract Spy Hybrid (London, UK)
Role description Senior AI Infrastructure Engineer (Agent Runtime Platforms) London – Hybrid ASAP 6 month Contract Inside IR35/ Fixed Term Employment   UST is looking for a Senior AI Infrastructure Engineer with deep experience building and operating production-scale agentic AI systems. You'll work with leading agent runtime platforms such as Amazon AgentCore Runtime (or similar) to deploy, secure, and scale AI agents and multi-agent workflows across enterprise environments.   What You'll Do: Deploy and manage AI agents and multi-agent systems in production Configure agent runtimes, tool integrations, permissions, and access controls Design memory, state management, and context-handling architectures Implement AI guardrails, governance, monitoring, and observability Build Python-based APIs, platform services, and orchestration layers Develop scalable, cloud-native AI solutions on AWS Contribute reusable...
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