The future is Open Source
We support you in modern challenges of IT with open and technical right solution.
Expertise
Software development
We offer competent software development with Java, C++ and Ruby. Use of modern frameworks such as Spring, Ruby on Rails and Angular and focus on Clean Code, security and RESTful APIs.
Linux/Unix
Customised support in UNIX shell and kernel programming. Efficient administration and automation of Linux servers and integration of firewall solutions and security tools for Linux-based systems.
DevOps
Efficient end-to-end automation with CI/CD tools like Jenkins, GitLab, ArgoCD and Helm. Use of GitOps best practices with Ansible and Git
Cloud Computing
We support you with certified expertise in AWS, Azure and Kubernetes. Focus on cloud migration, development and training for seamless cloud integration
Cloud Native
We develop solutions based on Kubernetes and the cloud-native landscape. Implementation of cloud-native architectures and microservices with a focus on security and performance
Open Source
Over 10 years of experience in open source. Core developer for OpenBSD. Development of own open source projects such as OpenBSDisks2 and notify-cpp as well as contributions to Qt, KDE, OpenCV and Inkscape.
Team
Open23 - Strong together: Two independent experts, one vision. We combine our strengths to create innovative IT solutions - flexibly, professionally and on a level playing field.
Rafael Sadowski
IT consultant specialising in DevSecOps, Software Engineering and Open Source with many years of experience.
As a UNIX/OpenBSD developer, I believe in ‘Secure by Default’, strong audits and open standards. As a DevSecOps Evangelist, I plan resilient software lifecycles. An open development model is part of my DNA.
rsadowski.de LinkedInSabina Sadowski
Driven by a strong enthusiasm for technology and supported by my extensive experience in IT, I am proud to be an IT Senior Consultant.
My passion is full-stack development with a focus on Ruby and Java. In over ten years, I have gained extensive experience with cloud-native applications and Kubernetes.
ssadowski.de LinkedIn
