Senior Product Engineer (AI Agents)

Berlin/Remote. Posted 2 months ago

The role

You will build and improve LLM-powered systems for the Cosuno platform. You will own features from model and agent through API to the TypeScript front-end.

What you will do

Build and improve LLM-powered systems to navigate tendering workflows
Own features from model/agent through API to the TypeScript front-end
Collaborate with Product, Engineering, and Data teams
Monitor, alert, and continuously improve deployed AI

Required qualifications

TypeScript, React, Node
2+ years writing production-grade Python
Experience shipping AI-powered features into a production web app
Deep hands-on experience building and deploying LLM/agent systems including RAG, tool use, multi-step reasoning, and evals
Design APIs, data pipelines, and services

Benefits

Competitive salary above the market average
100% remote or office in Berlin
Flexible working hours
New MacBook Pro
Regular company off-sites and team events
Permanent contract

About the company

Cosuno is a fast-growing tech startup making the construction industry more efficient and transparent with a digital platform for tenders and procurement processes.