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iFindTech Ltd

The Netherlands / Global

Senior Fullstack Engineer - AI

Job Description

We’re working with a fast-growing AI company looking for a Senior Fullstack Engineer to build production AI features end to end. You’ll work across React & TypeScript on the frontend and Python & FastAPI on the backend, taking features all the way from idea through to production. Expect to work on everything from APIs, data and LLM integrations through to streaming interfaces and document-heavy UIs. This is a hands-on role with real ownership, where you’ll help shape both the architecture and the product as the company scales.

Must Haves

5+ years building and shipping fullstack applications

React – 5+ years

TypeScript – 3+ years

Python / FastAPI – 3+ years

Strong experience building and designing production APIs

PostgreSQL

Redis – 2+ years

Experience building modern, high-quality user interfaces

Comfortable owning features end to end – backend through to frontend

Experience using AI coding tools such as Claude Code, Cursor or Copilot

Comfortable working in a fast-moving startup environment

Nice to Haves

Experience building products involving

LLMs, RAG or AI agents

Next.js

React Query

Zustand

Tailwind CSS

shadcn/ui

LangChain or LlamaIndex

SSE / WebSockets

and streaming applications

Experience building document-heavy or real-time interfaces

Genuine interest in

AI engineering and agentic applications

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