Remote Senior TypeScript Backend Engineer — AI & LLMs

Darwin Recruitment; Wien; Remote; EUR 96,000 - 152,000; Full time

Job summary

Darwin Recruitment is seeking a Freelance Senior TypeScript Backend Engineer for a 3-month contract, likely to extend, remote across Europe. Join a product development team working on an experimental initiative, focusing on backend services and AI-powered capabilities built on LLMs and agentic workflows.

You will independently design, build, and iterate features end-to-end, leveraging Node.js environments such as NestJS, Express or Fastify, with strong API design and system integration

Qualifications

• Senior-level TypeScript backend experience.
• 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.

Responsibilities

• Design, build and iterate backend features end-to-end.
• Develop AI-powered capabilities and agentic workflows.
• Own features with minimal supervision in a fast-paced environment.
• Collaborate with product and design teams to ship value quickly.

Skills

TypeScript

Node.js

API design

Independence

LLMs

Tools

NestJS

Express

Fastify

Job description

Darwin Recruitment is seeking a Freelance Senior TypeScript Backend Engineer for a 3-month contract, likely to extend, remote across Europe. Join a product development team working on an experimental initiative, focusing on backend services and AI-powered capabilities built on LLMs and agentic workflows.

You will independently design, build, and iterate features end-to-end, leveraging Node.js environments such as NestJS, Express or Fastify, with strong API design and system integration