Salary: £60,000 - 80,000 per year Requirements: Strong experience with MongoDB (data modelling, indexing, aggregation pipelines, performance tuning) Proficient in Node.js and the wider JavaScript/TypeScript ecosystem Experience with Express.js and/or Fastify Knowledge of RESTful API design and distributed systems Familiarity with AWS or similar cloud platforms Expertise in microservices architecture Experience with testing frameworks (Vitest, Jest, Mocha, etc.) Proficient in CI/CD pipelines and DevOps best practices Experience with GitHub workflows Knowledge of observability and monitoring tools (e.g., Datadog) Proficient with Docker and Kubernetes Nice to Have: Experience integrating AI/ML models into production systems Familiarity with LLM APIs (OpenAI, Anthropic, etc.) Experience in prompt engineering Knowledge of AI workflow tools (LangChain, Flowise) Experience building internal AI-powered automation tools Responsibilities: Define and evolve the technical roadmap alongside the founder Lead architectural design and make critical technology decisions Champion engineering best practices, code quality, and technical excellence Mentor, coach, and develop engineers at all levels Foster a culture of ownership, collaboration, and innovation Architect, build, and scale backend services and RESTful APIs Design, optimize, and maintain MongoDB database solutions Improve system reliability, performance, and scalability Resolve complex production issues with robust solutions Implement microservices and modern backend patterns Partner with Product, Design, and the founder to deliver high-impact outcomes Participate in hiring and technical interviews to grow the engineering team Drive improvements in processes, CI/CD pipelines, and DevOps practices Ensure effective planning, estimation, and execution across initiatives Technologies: AI API AWS Architect Backend CI/CD Cloud Datadog DevOps Docker GitHub JavaScript Jest Kubernetes LLM Mocha MongoDB TypeScript microservices NodeJS ExpressJS Support Vue More: We are a high-growth startup backed by a larger, established group, looking for a Technical Lead to shape our technical vision and execution. You will work directly with our founder, leading a talented engineering squad while influencing the strategic direction of our product. We genuinely invest in our people, offering a remote-first working environment with flexible hours, 25 days of annual leave plus 8 bank holidays and 2 additional days for Christmas shutdown. Join us to make a real impact while working in a fast-moving, high-impact environment. last updated 11 week of 2026