Phone: +49 176 38025889

Johannes Bornhold - Computer Scientist

Independent software engineer, self-employed since 2006. Managing director of bo-tech GmbH & Co. KG since 2009.

Twenty years self-employed. What I take on is the Python, TypeScript and Kubernetes work inside your team - the services, the pipeline that ships them, and the tests that make the next change fast instead of risky.

I have also built delivery units and run engineering departments. That is not what I am offering - it is why I recognise the constraints a team is working under, and design inside them instead of around them.

Taking on new work - around half capacity, fully remote.

What I do

  • Application development in Python and TypeScript, on a codebase that has to keep working while it changes
  • Kubernetes - getting applications onto it, and keeping them running once they are there
  • The path from repository to production: packaging, CI, the test suites that run in it, deployment, the operational side nobody owns
  • The tests that make all of it safe, so the team stops routing around its own code and a change from an outsider is something you merge rather than audit
  • Leaving the team better than I found it - review, pairing, and practices that stay after I go
  • Working in the open: upstream projects, public sector, sovereign infrastructure

How I work

I join teams as a working member, not as an outside advisor. That is how I see the real problems - the ones that don't surface in status meetings - and it is why what I leave behind stays: the team learned it by doing the work with me, not by sitting through a presentation.

Recent work

Three years on openDesk at Univention, the sovereign workplace for European public administration. I moved the Nubus identity components into Kubernetes and advanced the Helm charts that deploy them, built up the CI and the end-to-end testing that runs in it, and was interim team lead for part of it.

Background

  • Computer Science (Diplom), Carl von Ossietzky University Oldenburg
  • VP of Technology at ERGO Digital IT (2017–2021), after Head of Engineering and Head of Architecture - a digital delivery unit built from the ground up, around 150 people across Berlin and Warsaw
  • Lead Developer and Team Lead at Delivery Hero, RhodeCode, Lemoncat
  • Python, TypeScript, Kubernetes, NixOS, Linux - from prototype to production

Rust: on my own projects so far, not yet a client's. It is where I want to take the work next, and I am glad to be hired on that basis.

Contact