← All roles

Founding ML Engineer (Spectrum)

JetBrains· Spectrum
Apply on company site
Hybrid (Various (Amsterdam/remote eligible))€0unknownPosted 8mo ago

About the role

Spectrum aims to revolutionize the semantic layer space for software-building organizations by creating a unified ontology for code, docs, and issues. The Founding ML Engineer will own the AI/ML engineering stack, shape the research agenda, and drive the product’s ML-driven data ingestion, retrieval, and reasoning capabilities.

Responsibilities

  • Designing and building the ML/LLM solution for data ingestion, knowledge extraction, retrieval, and subsequent reasoning.
  • Creating the datasets, metrics, and pipelines that drive measurable improvements across the system.
  • Architecting and improving agents for context retrieval, knowledge extraction, and data alignment, including prompt engineering, model selection, and inference optimization.
  • Establishing MLOps practices, including orchestration, observability, and experiment tracking.
  • Collaborating with the engineering team on system design and with JetBrains Research on the research agenda.
  • Defining hiring criteria, growing the ML team, and shaping the ML team culture.

Qualifications

  • A proven track record as an ML/AI Lead.
  • At least five years of experience in ML/AI systems, with at least two years focused on LLMs and generative AI.
  • Deep understanding of the LLM ecosystem, including model architectures and fine-tuning approaches.
  • Hands-on experience with: prompt engineering and LLM pipeline design (including evaluation); agentic frameworks such as LangChain, LlamaIndex, LangSmith, smolagents, or equivalents; vector databases and retrieval-augmented generation (RAG); deploying and scaling LLM-powered applications via APIs (OpenAI/Anthropic) or open-source models.
  • Strong Python skills (Kotlin knowledge a plus).
  • Excellent communication skills to explain complex concepts to diverse audiences.
  • Proficiency in English (written and verbal).

Skills

Required:ML/AI leadershipLLM and generative AIPrompt engineeringAgentic frameworksVector databases / RAGMLOpsPythonCommunicationEnglish proficiency

Benefits

  • A competitive salary
  • JetBrains benefits
  • A generous runway and corporate resources with startup autonomy
Last updated Sep 30, 2026. Interested? Apply on the company site.

About JetBrains

Company profileWebsite

More open roles at JetBrains