Software Developer — Build the AI OS of the Future

👾 KerrOS – Not just building software. Creating living systems.

You’re here because something sparked curiosity. Maybe it’s the promise of working with AI that actually matters. Maybe it’s the chance to build something from scratch with other people who obsess over elegance, simplicity, and getting sh*t done. Maybe it’s because you’re tired of long meetings, legacy codebases, and features that don’t go anywhere.

Whatever it is—you’re still reading.

At KerrOS, we’re building the world’s first AI Operating System—a system where AI agents create their own tools, orchestrate entire workflows, and respect your infrastructure instead of replacing it. A living system that learns and evolves. And we need software developers to help make it not just powerful, but elegant, scalable, and real.

🎨 About the Role

This isn’t just another dev job. You’ll be building the nervous system of an AI OS—from the APIs that power agent communication to the interfaces that make complexity feel simple. You’ll work across the stack, shipping features that matter, with code that’s clean enough to frame.

You will:

  • Build systems that let AI agents create and use their own tools
  • Design APIs and services that scale without losing their soul
  • Create interfaces that feel alive—because they are
  • Work with modern open-source tools and contribute back to the ecosystem
  • Ship fast, ship clean, ship things that make you proud

🧠 You’re Probably Like Us If…

  • You’ve been programming since your youth—this is your craft
  • You believe programming is creative expression; your code is your art
  • You appreciate elegant abstractions and hate unnecessary complexity
  • You don’t want to reinvent the wheel; you want to make it roll better
  • You ship fast but never messy
  • You want to build with smart, passionate people who hate pointless meetings and love moving fast

🧬 The Bigger Picture

At KerrOS, we’re not building features. We’re building a new foundation for how businesses operate—with AI agents that:

  • Create their own tools and connectors
  • Orchestrate workflows across existing software
  • Learn from usage and adapt in real time
  • Run securely on your own infrastructure, not someone else’s cloud

Every line of code you write becomes part of this living system. And that’s where you come in.

🎁 What We Offer – More Than Just a Job

Mission with Meaning: Be part of something big. Your work will help shape the future of how humans and AI work together.

Growth Opportunities: Whether you’re starting your career or are an experienced professional, KerrOS is a place to grow and hone your skills.

Empowering Environment: We believe in giving our team members the power to take charge of their work. You’ll have the space and support to create innovative solutions.

Collaborative Culture: Join a team where everyone’s input is valued, and we learn from each other every day.

Having Fun Together: Come and join us—we’re having a blast every day (not just saying that; this is one of the most fun moments we’ve had in our careers, and we’ve done a lot of amazing things as a team).

🌍 What You’ll Get

  • Remote work – Work from anywhere in Sweden or from our office in Stockholm, its up to you.
  • Elite team – Work with others who are top of their game, and know it
  • No long meetings – We value deep work and asynchronous communication
  • Creative freedom – You’ll have real influence over architecture, design, and technical decisions
  • Learning culture – You teach, you learn. We level each other up, constantly
  • Open source contributions – Be part of the larger ecosystem, not locked into a proprietary loop

✨ What Makes This Special?

You won’t be a cog in a big machine. You’ll help build the machine. From the ground up. With people who give a damn. You’ll finally get to work on something that makes you say: “This is what I was meant to build.”

💌 How to Apply

We’re not looking for perfect CVs. We’re looking for builders.

  • Send us something you’ve made: GitHub repos, side projects, that one elegant solution you’re still proud of
  • Tell us why this mission excites you—or what you’d love to fix about how software works today
  • If you’ve ever thought “there has to be a better way” while staring at enterprise software, we should definitely talk

KerrOS — The First AI Operating System. Built by people who care.

Apply now