Summary
✨ AI‑Generated
A mission-driven technology organization is seeking a senior backend-focused full-stack engineer to build scalable web applications and AI-enabled solutions. The role involves improving internal technology ownership, designing robust systems, and delivering impactful features using modern JavaScript technologies.
Highlights
Opportunity to work on meaningful technology projects focused on education and AI innovation with flexible remote work and ownership of backend-focused engineering challenges.
Description
Senior JavaScript Engineer (Contract) | Backend Focused: TypeScript, Next.js, Supabase, Postgres/SQL | AI x Tech for Good | UK/EU Remote | £400/day, outside IR35 | 6 Months
The Company
We're partnering with a mission-driven B2B start-up using technology and content, to help solve the growing skills gap created by the transition to a greener economy.
They're now evolving the product into a broader L&D platform, building new training capabilities and increasingly AI/agentic-led products that can deliver, assess and improve training.
The Role | Senior JavaScript Engineer (Contract) | Backend Focused: TypeScript, Next.js, Supabase, Postgres/SQL | AI x Tech for Good | EU Remote | £400/day | 6 Months
They're looking for a Senior, backend-leaning Full Stack Engineer to join initially for 6 months.
A major focus will be bringing more of the technology in-house, reducing reliance on third-party platforms and giving the team greater control over the product.
Working directly with the Technical Lead in a team of three, you'll have significant ownership across backend architecture, data, APIs, integrations and product development.
What You'll Be Doing | Senior JavaScript Engineer (Contract) | Backend Focused: TypeScript, Next.js, Supabase, Postgres/SQL | AI x Tech for Good | EU Remote | £400/day | 6 Months
Building new products and features end-to-endDeveloping backend services and APIs in TypeScriptDesigning data models and working extensively with PostgreSQLBuilding third-party integrationsContributing across Next.js applicationsHelping bring core technology in-houseBuilding new AI / LLM-led product capabilitiesMaking architectural decisions alongside the Technical Lead
Tech Stack | Senior JavaScript Engineer (Contract) | Backend Focused: TypeScript, Next.js, Supabase, Postgres/SQL | AI x Tech for Good | EU Remote | £400/day | 6 Months
TypeScript | Next.js | Supabase | PostgreSQL | APIs | AI / LLMs
They're flexible on exact technologies - strong TypeScript, backend, database and API experience is more important than ticking every box.
What They're Looking For
Senior Full Stack Engineer with a strong backend leanStrong TypeScript experiencePostgreSQL / SQL and data modelling experienceStrong API and integration experienceProduct-minded with evidence of owning features end-to-endComfortable operating autonomously in an early-stage start-upAvailable immediately or within 1 week
Nice to have: Supabase, AI/LLM or agentic products, EdTech/LMS experience.
Contract Details | £400/day | 6 Months | UK/EU Remote | Immediate Start
Maximum two-stage interview process with the intention of moving quickly.
If you're a product-minded engineer who enjoys 0→1 builds, high ownership and solving ambiguous problems, while working on technology with genuine real-world impact, we'd love to hear from you.
