4 senior backend developer jobs found in Hybrid, Greater London

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...

Must have skills: Demonstrable experience with Solidity. Strong understanding of blockchain security practices and potential vulnerabilities. Proficiency in Hardhat and Foundry. Experience with Solidity security testing tools like Slither, Mythril, Echidna Practical experience with scripting languages like Javascript or Typescript. Ability to craft unit, integration, fork, and invariant tests, ensuring code longevity. Demonstrable aptitude for best development practices, data structures, algorithms, and methodologies. Bachelor's degree in Computer Science, Engineering, or a related STEM discipline. Excellent debugging and troubleshooting skills. Strong written and verbal communication skills. Self-motivated with the ability to work in a fast-paced, evolving environment. Proficient communication skills in English. Development background in sectors such as banking, finance, or trading, paired with a comprehensive grasp of financial...

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...

Must have skills: Demonstrable experience with Solidity. Strong understanding of blockchain security practices and potential vulnerabilities. Proficiency in Hardhat and Foundry. Experience with Solidity security testing tools like Slither, Mythril, Echidna Practical experience with scripting languages like Javascript or Typescript. Ability to craft unit, integration, fork, and invariant tests, ensuring code longevity. Demonstrable aptitude for best development practices, data structures, algorithms, and methodologies. Bachelor's degree in Computer Science, Engineering, or a related STEM discipline. Excellent debugging and troubleshooting skills. Strong written and verbal communication skills. Self-motivated with the ability to work in a fast-paced, evolving environment. Proficient communication skills in English. Development background in sectors such as banking, finance, or trading, paired with a comprehensive grasp of financial...