Marian Gaebler
Full Stack Developer (React/Node/AWS) from Hamburg.
15+ years. I understand your problem before I code.
I've been building software since 2009, and freelancing for SaaS start-ups since 2020. Good products come from understanding, not velocity — I engage with users, topics, and team before the first line of code is written.
What I Bring
Full-Stack Development
From initial concept to production — React, TypeScript, Node.js, and cloud infrastructure. Clean architecture and scalability from day one.
Agentic Coding
Faster delivery through AI-powered development with Claude Code. I work as architect and reviewer — AI writes, I steer. Context engineering ensures consistency and quality.
Clean Code & Lean Development
Maintainable code is the standard, not a luxury. Maximum value with minimum effort — I build what's needed and avoid overengineering.
Transparent Communication & Teamwork
Regular updates, clear agreements, and honest assessments are my standard. I enjoy working in teams and contribute constructively — whether with internal developers, designers, or project managers.
DevOps & Infrastructure
CI/CD pipelines, infrastructure-as-code, monorepo setup, and developer experience. From Azure DevOps to GitHub Actions.
15+ Years of Experience
I've been building software professionally since 2009. I've helped startups grow and built complex systems for enterprises.
Featured Projects
Hausify
FeaturedEstate administration portal with back-office and tenant app. Long-term full-stack development.
Buchwerk
FeaturedBridge between receipt management, transaction overview and tax advisor — for freelancers who don't do their own bookkeeping but want to stay in control. Fully built using an agentic coding approach with Claude Code.
Testimonials
"Marian supported our team for about 18 months as a Senior Frontend Developer, while also willingly taking on additional responsibilities. It was a great collaboration, both on a personal and professional level. Marian was an excellent addition to our team and greatly supported us with his structured and well-organized way of working. As a backend developer, I worked closely with him and experienced a highly cooperative and reliable team player from whom I learned a lot."
– Judy Hess, Gestalt Robotics GmbH
"It was a great pleasure working with Marian. During our joint project work, he stood out through exceptional technical expertise and deep understanding of modern JavaScript frameworks. Particularly impressive were his skills in architecting scalable applications and his proactive approach to solving complex problems. Marian was always willing to share his knowledge, prepare it well, and support other team members. I wish you all the best. :)"
– Alexander Linß, Bergmann & Partner
"Marian is an absolute professional. I very much enjoyed working with him and experienced him as a highly motivated and extremely competent software developer."
– Kai Kurzhals, Bergmann & Partner
"Marian demonstrated exceptional competence in solving complex and unconventional challenges. Additionally, his ability to break down goals into milestones and coordinate with the team was particularly helpful."
– Eugen Funk, Gestalt Robotics GmbH