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Staff ML Engineer

Factorial

Barcelona, Catalonia, Spain CDI June 16, 2026
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Vacancy Description

DataOps / ML & AI: What's the mission?


Factorial is building a world-class data and AI platform to help teams make smarter decisions, automate complex workflows, and deliver more value to our customers.


As a Staff ML Engineer, you'll set the technical direction for how we design, build, and ship AI-powered systems across Factorial. You'll own our most ambitious AI initiatives end-to-end—LLM applications, agents, and assistants—and make them accurate, reliable, explainable, and production-ready at scale.


You'll be a force multiplier: raising the engineering bar, mentoring other engineers, and partnering with Product, Engineering, Data, Operations, Sales, and Customer Experience to turn the biggest business opportunities into robust AI solutions—balancing speed, impact, correctness, and long-term maintainability.


The role


You'll be part of the Data Ops – ML & AI team, working within a fast-growing Engineering and Data org...

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