Join the team

At CoreTeam, we give engineers a better way to work, one rooted in autonomy, deep execution, and long-term impact. We embed directly inside early-stage AI and deep-tech startups to shape systems, products, and culture from the inside out.

We’re looking for engineers who thrive in high-trust environments, who care about clean infrastructure, fast iteration, and building things that actually ship. People who want to work alongside founders, not behind layers. People who value clarity, context, and code that lasts.

If you are a purpose-driven team player who excels at solving complex challenges and want to work on hard technical problems in teams where your decisions matter — you’ll feel right at home here.

Open Positions

Working at Coreteam

“Flatfile is built for people who want real ownership of meaningful work, which is why we hire intentionally. We believe the quality of your peers shapes the quality of your thinking, your growth, and the work itself.

At Flatfile, you’ll have the space to solve hard problems and the collaborative environment to make those solutions the best they can be. If you want a role where your decisions influence the work and your team members expect as much of themselves as they do of you, you’ll do well here.”

Dory Zidon

Chief Operating Officer

Explore Open Roles

Research

Data

Senior Solution Architect - Pipelines

Part Time

Remote

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AI

ML

ML Research Engineer

Full Time

Remote

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AI

Machine Learning Performance Engineer

Part Time

Remote

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AI

Founding AI Engineer

Serbia, Bulgaria

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AI

Backend

Full Stack

Backend Engineer

Full Time

Remote

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AI

Research

Applied AI Research Engineer

Full Time

Serbia, Bulgaria

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