More than four years as a Solutions Architect at GitLab shaped my perspective on DevOps: I worked daily with organisations of all sizes and industries, helping them adopt DevOps practices and get the most out of GitLab as a central platform. I know what works in practice—and where concepts hit their limits.
Today I work as an independent consultant, helping organisations build reliable, secure, and maintainable software delivery systems—sustainably.
What I Do
DevOps Transformation — I guide organisations from baseline assessment through to implementation: cultural change, process optimisation, and technical execution treated as one.
SDLC Optimisation — I analyse and improve the entire Software Development Life Cycle—automation, security, and compliance built in, not bolted on.
Trainings & Workshops — Practical, immediately applicable, tailored to the situation at hand. GitLab CI/CD, DevSecOps, or software supply chain security—knowledge that works in day-to-day practice.
Why Friday Deployments?
Deploy anxiety is not inevitable. With the right practices, clear ownership, and a shared understanding across the team, every organisation can deploy with confidence—Fridays included. That is what I stand for.
Successful DevOps transformation does not start with tools. It starts with people.
DevOps Transformation
From baseline assessment to implementation — cultural change, processes, and technology treated as one.
SDLC Optimisation
Analyse and improve the entire Software Development Life Cycle — automation, security, and compliance built in.
Trainings & Workshops
Hands-on and immediately applicable — GitLab CI/CD, DevSecOps, or supply chain security, tailored to your team.
Why I do this
Relaxed organisations are more productive, more successful, and more human.
People first
I want people to be well. Inefficiency doesn’t just cost time — it costs morale, energy, and dignity. That’s what drives me.
DevOps is culture
DevOps is not CI/CD and not a tool. It’s the way an organisation works together, takes ownership, and solves problems — without blocking or burning each other out.
People. Process. Tools.
The best tools are useless without processes. The best processes fail when people don’t trust them. The order matters.
AI on solid ground
AI scales the good — or the bad. When roles are unclear and processes chaotic, AI just makes the chaos faster. Stabilise first, then scale.
TILpod
66+ episodesThings I Learned · mit Dirk Deimeke · seit November 2020
TILpod stands for “Things I Learned” - once a month I talk with Dirk Deimeke about things we recently discovered or finally understood: technology and open source, ways of working, and career topics. No script, no polish - just two people sharing their thoughts.
Listen nowCareer
Key milestones along the way.
Entering IT
Versionsverwaltung mit Git (1st edition)
Versionsverwaltung mit Git (2nd edition)
Solutions Architect at GitLab
TILpod
Versionsverwaltung mit Git (3rd edition)
Git Schnelleinstieg
DevOps
IT-Management – Das umfassende Handbuch
Friday Deployments GmbH
Published Expertise
My knowledge is documented not just in client projects, but also in books.
DevOps Frameworks, Techniques, and Tools
Rheinwerk Publishing / SAP Press, 2025
Author: Sujeevan Vijayakumaran
418 pages covering DevOps practices, culture, and tooling across the complete application lifecycle—from project planning through monitoring. Practical examples with GitHub, GitLab, Jenkins, and more.
Git Schnelleinstieg
mitp Verlag, 2022
Author: Sujeevan Vijayakumaran
German edition
Understand Git and apply it practically in your project within two weeks. Covers all essential concepts—from the fundamentals through branching strategies to remote workflows with GitHub and GitLab.
IT-Management – Das umfassende Handbuch
Rheinwerk Verlag, 2025
Co-author: Sujeevan Vijayakumaran
German edition
832 pages covering all relevant disciplines of modern IT leadership—from strategy and governance through service management and project control to information security and DevOps. Written by a team of practitioners.
Ready to take your DevOps to the next level?
Whether you need a DevOps assessment, a full transformation, or a tailored workshop — we’re here to help. Let’s talk about your challenges and find the right solution together.
Get in Touch