Freelancer in Hamburg

Waldemar Kornewald

Hi, I'm Waldemar Kornewald - a freelance software engineer based in Hamburg, Germany. I've been writing software since my early childhood (1996) and constantly improving my skills in designing easy to understand, maintainable code.

I'm available on-site in Hamburg or remote for:

  • Mobile apps: Android, Flutter, Kotlin, Java
  • Frontend: React, TypeScript, JavaScript
  • Backend: Python, Django, Flask
  • DevOps: Kubernetes, Docker, infrastructure-as-code
  • Architecture consulting

If you need help with one of your projects just contact me: hello@ensody.com

Portfolio

Some of my latest customers/projects:

  • 2017 – 2020 Ovy: Flutter, Android/Kotlin/Java, Flask/Python, Bluetooth LE (custom thermometer), Dockerized dev env, Google App Engine, Redis
  • 2017 – 2017 SPIEGEL: Kubernetes setup/ops (on-prem & GKE), how-to-use workshops, Elasticsearch, PostgreSQL, Prometheus, Kibana, Grafana, Docker images for various services, etc.
  • 2014 – 2020 Locandis: Android/Kotlin/Java, React/TypeScript/JavaScript, Django/Python, Bluetooth LE (iBeacons), PostgreSQL, Redis, Docker
  • 2015 – 2018 sefibo: React/TypeScript/JavaScript, Django/Python, Elasticsearch, PostgreSQL, Redis, Docker, custom task queue
  • 2014 – 2015 Mainmetrics: Django/Python/SQLAlchemy, Python/JavaScript frontend, PostgreSQL, Redis, Docker
  • 2008 – 2014 various customers: Python, JavaScript, Django, Android, Java, Google App Engine, PostgreSQL, MySQL, Elasticsearch, MongoDB, Redis, C++
  • 1999 – 2008 various open-source/free projects: Python, Django, Trac, C++, Java, GPIB, WinAPI, Perl, PHP, x86 asm, USB HID

Open-source

Over the past 20 years I've also made several open-source contributions: