Applied AI Engineer

About 2501

2501 builds autonomous AI agents that operate directly in the shell to complete real production tasks - not just synthetic evals. We treat LLMs as pluggable brains, mixing open‑source and flagship models to get the best result. By fusing their output with observability data we surface root causes fast and automate the dull parts of incident response for corporate engineering teams who can’t afford downtime.

We’re a tight‑knit team of DevOps, Platform, and Infra engineers who ship fast, learn constantly, and elevate each other every day.

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Why 2501 ?

We use AI to solve real problems in the underlying layers of every IT stack. We build what is the future of IT, ensuring every brick of our clients’ infrastructure is up and running.

We discovered an amazing opportunity to make IT more reliable and modern and we’re building the best way to make it a reality. Our customers and investors and backing this with strong commitment and foresee in our mission the future of IT.

We’re backed by three leading European VC funds, giving us the resources to aim high and take risks.

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What you’ll do

• Own features end to end – work across the TypeScript CLI, Postgres migrations, automated evals, and Vercel deployments - focusing where you add the most value.
• Work with a range of LLMs – combine flagship and open‑source models, fine‑tune on meaningful production data, and keep getting better as new releases land.
• Build solid infrastructure – put together tools that give us a clear view of every 2501 agent.
• Debug fast – hop on voice with teammates, share a screen, and solve problems together.

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Who you are

• AI-native – you’ve shipped LLM‑based features to production and are well past basic prompting - skilled in advanced prompt design and comfortable with RAG, fine‑tuning, or similar agentic approaches.
• Owner mindset – you turn vague ideas into running code and track the impact.
• Straight-forward communicator – you explain trade‑offs in plain language.

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Not for you if

• You’d rather stay comfortable than tackle a hard mission - we push hard to get the job done.
• You want only heads‑down, async work – we keep a shared voice channel open during core hours for quick collaboration and personal connection.

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Why you’ll enjoy working here

• Fully remote – work wherever you’re happiest, we keep core hours in CET for smooth collaboration.
• Competitive pay & meaningful equity – you own a piece of what you build.
• Small team, big impact – your code ships to users the same day.

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Our stack

TypeScript, Node.js, Supabase Postgres, Vercel, Vue + Nuxt, Python for evals.

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How to apply

Send us something you’ve built (repo, blog, demo) and a few lines on why this role interests you - email it to jobs@2501.ai

We hire for skill, drive, and curiosity – not credentials.