Poland · global remote

Calm systems.
Clear ownership.

Engineering leader · systems architect · hands-on builder

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.

How I work.

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

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

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

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

2025 → now

Founding Engineer · Stealth AI Startup

Building an AI product from scratch, from architecture to the engineering habits around it.
2022 → 2025

Head of Engineering · Spacemesh

Led engineering through mainnet launch and into day-to-day network operations.
2021 → 2022

Senior Engineering Manager & Site Manager · CodiLime

Led cloud-native projects and mentored engineers across several teams.
2019 → 2021

Head of Engineering · Travelping GmbH

Ran cloud-based mobile network cores with a 24/7 operations team.
2015 → 2019

Engineering Manager / Tech Lead · Mirantis

Built OpenStack and Kubernetes automation and led distributed engineering teams.
2011 → 2015

Co-Founder / Technical Lead · Codernity

Co-built a software company, taking products from architecture to customer delivery.
2004 → 2011

Early career · Engineering and consulting

Backend engineering, consulting, and open-source work.

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