Mistral AI

Forward Software Engineer, Data

Mistral AI
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2 days ago
Paris, France or London, United KingdomSenior

Responsibilities

  • Build AI systems end to end from prototype through production.
  • Design data architecture for ingestion, processing, storage, data models, and ontologies.
  • Build distributed pipelines for large-scale documents, code, logs, and multimodal content supporting retrieval, agentic workflows, and fine-tuning.
  • Turn customer-specific solutions into reusable patterns and platforms.
  • Design for throughput, latency, cost, and failure recovery under real load.
  • Implement data governance covering ownership, access control, lineage, retention, and privacy.
  • Build evaluation loops with LLM and human labeling, versioned datasets, and quality-drift checks.
  • Set standards for designing and shipping data systems and collaborate with research, engineering, and customer-facing teams.

Requirements

  • Proficiency across the stack with NodeJS technologies such as NextJS, Express, or Fastify, or Python with FastAPI.
  • Confidence with TypeScript and React/NextJS or similar technologies.
  • 5+ years of experience building and running production data-intensive pipelines with distributed processing and orchestration tools for structured and unstructured data.
  • Experience with retrieval-augmented generation, agentic use cases, or LLM evaluation.
  • Ability to work autonomously, own outcomes, communicate with technical and non-technical audiences, and work fluently in English.
  • Comfort shipping incrementally and making product-technical tradeoffs.
  • Preferred: experience with graph-based systems such as Neo4j and ontology design.
  • Preferred: hands-on experience with data pipelines for LLM training, fine-tuning, or evaluation and contributions to data or LLM open-source projects.
  • Preferred: experience with data governance, privacy requirements such as GDPR, secure data handling, CI/CD, infrastructure as code, or security engineering.

Benefits

  • Benefits may include healthcare coverage, parental leave, retirement plans, relocation support, wellness programs, meal and transportation allowances, and other location-specific perks.
  • Benefits vary by country and current details are provided on Mistral's Benefits page.

Tech Stack

Apache AirflowApache BeamApache SparkExpressFastAPINeo4jNext.jsPythonReactTypeScript

Categories

Forward Deployed
Mistral AI

About Mistral AI

1,001-5,000 employees

Mistral AI builds foundation language models and full‑stack AI solutions for enterprises, offering APIs, on‑prem deployment, developer tools, and applications. The privately held company, founded in 2023 and headquartered in Paris, partners with organizations in finance, manufacturing, defense, healthcare, and the public sector to co‑create customized systems. It releases open‑source models alongside commercial offerings and makes its models available through major cloud marketplaces.

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