6 of 6 Permanent Fastify Jobs in the UK

software using Python and/or TypeScript . Develop full-stack applications, APIs, AI agents and workflows. Work with technologies including Next.js, React, FastAPI, Fastify, FastMCP and Hono . Design and implement agentic applications using technologies such as LangGraph, AutoGen, Claude Agent SDK, OpenAI tooling or custom orchestration frameworks . ...

experience with a strong focus on backend development, with a preference for building developer tools or infrastructure.Strong TypeScript and Node.js skills (experience with Express, Fastify, or similar frameworks).Solid understanding of API design, distributed systems, and data modeling.Experience with Go is a plus — you'll occasionally contribute to Go-based ...

Engineer (TypeScript/Node.js) At a Glance - Senior-level engineering role at a Series B KYC and compliance intelligence platform - Core stack: TypeScript, Node.js (Fastify), React, MongoDB, AWS - Hybrid or remote within Northern Ireland - Salary: £60,000 - £80,000 - Small, high-calibre team; end-to-end ownership of a genuinely … data integrity and audit trails matter, you will feel at home here immediately. Key Responsibilities - Design and build scalable backend services using Node.js and Fastify - Develop and maintain React-based frontend features as part of a full-stack remit - Architect and manage complex data models within MongoDB across relationship-rich ...

Engineer or Tech Lead. You're not interested in going deep on tooling, infrastructure, and developer experience. Our tech stack TypeScript-first React and Fastify Postgres, GCP Latest AI primitives How we work Initiative-driven. Organize around customer problems, not org charts. Customer-obsessed. Features that don't move customer ...

React Router, Vite and Sass/SCSS across multiple branded sites. Contribute to Node.js APIs and backend-for-frontend services using established patterns in Fastify and Express. Write and update parameterised SQL queries, and support database changes through reviewed migrations. Help integrate third-party services such as identity-verification … Clear written and verbal communication, reliability and a genuine interest in developing as a full-stack engineer. Nice to have Experience with Node.js, Express, Fastify or another server-side JavaScript framework. Personal or commercial projects using relational databases, Docker or continuous-integration tools. Familiarity with TypeScript, Sass/SCSS ...

React Router 7, Vite and Sass/SCSS across multiple branded sites from a single codebase. Develop back-end features in Node.js, including a Fastify API, an Express backend-for-frontend and durable background jobs processed through a SQL-backed outbox queue. Design and evolve the SQL Server schema through … including hooks, controlled forms, routing and state management, together with confidence using modern ESM tooling. Experience building and consuming REST APIs in Node.js using Fastify, Express or a comparable framework. Practical SQL knowledge covering schema design, joins, transactions and indexes. SQL Server experience is helpful but not essential. A genuine ...