Salary: DOE up to 100k with bonus and benefitsThis role is ideal for a Senior Backend / Systems Engineer who thrives on solving complex systems problems, building scalable Node.js and Nest.js backend systems, and driving robust, high-performing AWS-based web solutions. This is not a DevOps role – you’ll own backend systems and integration, not manage infrastructure day-to-day.My client creates AI-driven services using large language models (LLMs), blending in-house components (30%) with third-party AI APIs and platforms (70%). You’ll work with Cursor integrated with Claude models, navigating a sophisticated AI ecosystem that brings technical depth and invites innovative problem-solving. Training provided on AI-powered documentation tools (AI Scribe)You’ll design, build, and own end-to-end web-based systems using your expertise in Node.js, Nest.js, APIs, and AWS, with a strong focus on integration, scalability, and long-term maintainability rather than only feature development or routine maintenance.You’ll apply solid systems-design skills to understand how components interact, communicate, and depend on one another across the full stack—optimising for reliability, performance, observability, and scale. You’ll build scalable backend services and APIs on AWS, handling growing demand while maintaining robust, production-grade performance.2+ years minimum working as a Senior Engineer5+ years with Node.js in production backend systems2+ years with NestJS3+ years in API Development – must have built and integrated REST APIs, working on platforms exposing REST APIs (Node.js backends) with frontends consuming them3+ years in Test Automation – ideally using Jest or Playwright2+ years implementing web-based solutions in AWS using S3 and LambdaSolid understanding of Agile/Scrum methodologiesProven track record of influencing the team around you and architecture decisions, mentoring others, and working collaboratively in a technology-driven environment.Highly Advantageous (Nice-to-Have)FastifyFrontend experience with Angular, React, or VueDatabases: designing efficient schemas and optimising SQL queries (PostgreSQL preferred; MySQL/SQLite accepted)AI scribe applications or AI-powered transcription/summarisation tools
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