jobs

(Senior) Machine Learning Developer (Junie)

Are you an engineer who loves diving deep into ML models, building standalone CLI tools, and exploring how far AI agents can go in autonomous coding? Do you want to rethink how software is built and use the tools you create every single day

Company

JetBrains

Location

Amsterdam, Netherlands; Belgrade, Serbia; Berlin, Germany; Limassol, Cyprus; London, United Kingdom; Madrid, Spain; Munich, Germany; Paphos, Cyprus; Prague, Czech Republic; Remote, Germany; Warsaw, Poland; Yerevan, Armenia

Status

Open

Posted

2026-08-03T16:43:23+00:00

JetBrains is hiring an ML developer for Junie, its AI coding agent that runs in JetBrains IDEs and as a standalone CLI. The work covers three areas: growing the CLI into a general-purpose agent, tuning model ensembling for cost versus quality, and extending autonomy so Junie can maintain subsystems over multi-day tasks. The person owns projects from early research through production code and is expected to use Junie daily. The posting asks for shipped ML or full-stack products, hands-on LLM, prompt engineering or agentic workflow experience, and practical model building or fine-tuning.