Research Engineer (Agentic Models) job opportunity at JetBrains.

Home Jobs In Netherlands Tag: JCP Core Machine Learning Research Engineer (Agentic Models) position at JetBrains


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JetBrains Research Engineer (Agentic Models)
Experience: 3-years
Pattern: Remote
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JCP Core Machine Learning

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

At JetBrains, code is our passion. Ever since we started, back in 2000, we’ve been striving to make the strongest, most effective developer tools on earth. Today, AI-powered assistance and agents are becoming a core part of how developers work in our IDEs. We’re building multi-step coding agents that can understand large codebases, plan changes, call tools, and iterate with the user. As a Research Engineer in the Agentic Models team, you’ll be responsible for the models, training loops, and evaluation pipelines that power these agents. You’ll work at the intersection of SFT and RL-style post-training, and product-driven evaluation, using our distributed GPU and MapReduce clusters to ship models into JetBrains products. As part of our team, you will: Design, implement, and maintain SFT and RL post-training pipelines for multi-step coding agents. Train and adapt LLMs for agent workflows, including planning, tool use, and multi-step interactions inside JetBrains IDEs. Build and develop evaluation and simulation environments where coding agents can act, be measured, and compared on realistic developer tasks. Design evaluation frameworks and metrics for agent behavior, analyze traces and logs, and close the loop from evaluation back into training, data, and reward design. Analyze training and evaluation results to propose and implement improvements to model architectures, training recipes, and datasets. Work with large-scale infrastructure, including distributed training on GPU clusters and large MapReduce-style data processing for pre-training and fine-tuning datasets. Collaborate closely with research, product, and infrastructure teams to turn high-level product visions into concrete models, experiments, and shipped features.  We’ll be happy to bring you on board if you have: Hands-on experience training LLMs (pre-training, fine-tuning, or post-training) in a research or production setting. Experience with a modern deep learning framework, such as PyTorch, and specialized LLM training stacks (e.g. Megatron, NeMo, verl, or similar). A solid understanding of LLM training basics – tokenization, data pipelines, batching, mixed precision, distributed training, and debugging unstable runs. The ability to own projects end to end, starting from a high-level problem or product pain point and overseeing it through the design, experimentation, implementation, and iteration phases. A product-aware mindset – you care about how agents are actually used by developers and can translate product needs and failure modes into modeling and evaluation work. At least 3 years of Python experience writing clean, maintainable code in modern ML codebases. Our ideal candidate would have experience with: ML orchestrators and workflow tools such as Kubeflow, Dagster, Airflow, ZenML, and/or job schedulers like Kubernetes or SLURM. Large-scale data and training pipelines, e.g. MapReduce-style clusters, multi-node GPU training, or workloads on the order of 1M+ CPU/GPU hours. Designing and maintaining evaluation pipelines for LLMs or agents, including metrics, dashboards, experiment tracking, and automated regression checks. AI agent development, such as tool-using agents, planners, or multi-step coding workflows, and familiarity with agentic frameworks or patterns. Experiment tracking and observability using tools like Weights & Biases, MLflow, Langfuse, or similar. Inference optimization and serving optimized models in production. #LI-KP1We process the data provided in your job application in accordance with the Recruitment Privacy Policy.

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