Typescript Engineers (DRWN)

Darwin Recruitment; Berlin; Remote; EUR 96,000 - 165,000; Full time

Job summary

Darwin Recruitment is seeking a freelance Senior TypeScript Backend Engineer to join a product development team on a 3-month contract, likely extendable. Remote Europe, 100% remote offering, working on backend services with AI-powered capabilities.

You will independently design, build and iterate features end to end, ensuring production-grade quality. The role requires hands-on TypeScript backend expertise, experience with Node.js frameworks, and a strong focus on API design and integration,

Qualifications

• Senior-level TypeScript backend experience (Node.js, NestJS/Express/Fastify).
• Proven delivery of production-grade applications from concept to release.
• Strong API design and system integration experience.
• Ability to own features independently with minimal oversight.
• Working knowledge of LLMs and AI-powered applications.
• Familiarity with AI agent frameworks and orchestration patterns.

Responsibilities

• Design and implement backend features end to end.
• Build AI-powered capabilities using LLMs and agentic workflows.
• Collaborate with product team to ship features.

Skills

TypeScript

Node.js

API design

LLMs

AI workflows

Tools

NestJS

Express

Fastify

Job description

Senior TypeScript Backend Engineer (DRWN)

We’re currently looking to hire a Freelance Senior TypeScript Backend Engineer for a 3-month contract, likely to extend.

I’ve included the information below.

• Job title – Senior TypeScript Backend Engineer
• Client Location – Remote, Europe
• Remote work offering – 100%
• Client Industry – Technology / Product Development
• Contract Length – 3 months (likely to extend)
• Contract type – Freelance

Project focus

Two senior, hands-on engineers are needed to join a product development team working on an experimental, high-ambition product initiative. You will independently design, build and iterate on product features end to end, with a strong focus on backend services and AI-powered capabilities built on LLMs and agentic workflows.

Key skills and Experience required

• Senior-level, hands-on TypeScript expertise on the backend (Node.js with NestJS, Express or Fastify)
• Proven delivery of production-grade applications from concept through to release
• Strong API design and system integration experience
• Ability to own features independently with minimal oversight
• Working knowledge of LLMs, agentic AI and AI-powered applications
• Familiarity with AI agent frameworks, orchestration patterns and tool integrations (advantageous)
• Background in fast-paced, experimental product environments (advantageous)

Darwin Recruitment is acting as an Employment Business in relation to this vacancy.

Lungelo Nkosi