Calm systems.
Clear ownership.

Engineering leader. Systems architect.
Still a hands-on builder.

Explore my experience Read my CV PDF
Portrait of Jedrzej Nowak
Jedrzej Nowak / NJ Poland · global remote

I’m Jedrzej Nowak, usually called NJ. I help teams turn difficult technical problems into systems they can build on — and keep running.

Led engineering through a blockchain launch. Built cloud-native mobile networks. Now building in AI.

Let’s talk it through

Experience, in brief.

For the projects and the longer story, read the full CV (PDF)

  1. 2025 — now Current

    Stealth AI Startup

    Founding Engineer

    Building an AI product from scratch, from architecture to the engineering habits around it.

  2. 2022 — 2025

    Spacemesh

    Head of Engineering

    Led engineering through mainnet launch and into day-to-day network operations.

  3. 2021 — 2022

    CodiLime

    Senior Engineering Manager & Site Manager

    Led cloud-native projects and mentored engineers across several teams.

  4. 2019 — 2021

    Travelping GmbH

    Head of Engineering

    Ran cloud-based mobile network cores with a 24/7 operations team.

  5. 2015 — 2019

    Mirantis

    Engineering Manager / Tech Lead

    Built OpenStack and Kubernetes automation and led distributed engineering teams.

  6. 2011 — 2015

    Codernity

    Co-Founder / Technical Lead

    Co-built a software company, taking products from architecture to customer delivery.

  7. 2004 — 2011

    Engineering and consulting

    Early career

    Backend engineering, consulting, and open-source work.

How I work.

Close enough to help. Far enough not to suffocate.

I join design reviews, incidents, and difficult delivery conversations. Then I step back so the team keeps ownership.

Design for recovery.

Failure will happen. Clear ownership, useful runbooks, and realistic SLOs make it something a team can handle.

Geeky, but not doctrinaire.

I like good tools and difficult problems. If the right answer is boring and maintainable, I’ll take it.

Let’s talk
it through.

Architecture, reliability, or the human side of engineering — I’m always up for a thoughtful conversation.