AI writes the code.
I make sure it works.
Senior engineering on top of agentic workflows, from the first prototype to production. You get the speed without the mess.
- experience
- 10+ years
- based
- Near Vienna, AT
- own products
- Vemetric, snappify
Code is cheap now. Judgment isn't.
Coding agents changed how fast software gets written. They didn't change what makes it good: a clear architecture, code your team can still change next year, nothing that falls over in production. That part is my job.
Build your product
From the first prototype to production. I set the architecture, let agents do the heavy lifting and review what ships. You get working software quickly, and a codebase your team can take over.
Join your team
I join your team as a senior engineer: shipping features, shaping the architecture, raising the bar in code review.
Adopt agentic coding
Workflows, guardrails and review practices that help your team get the speed of coding agents without losing control of the codebase.
- TypeScript
- React
- TanStack
- Astro
- Node.js
- Next.js
- Postgres
I build my own products, too.
Running my own products is where I try new tools first, and where I live with my own decisions long after launch.
What clients say
“Dominik's expertise was a tremendous help for transforming our frontend application and guiding our dev team during a 6 month project. His ability to get things done quickly while providing a clean architecture aligned perfectly with our needs.”
Janice Goodenough · CEO, Hydrogrid“Dominik quickly integrated into our team and delivered high-quality frontend solutions. His independent and reliable way of working is super valuable to us.”
Thomas Romanek · CEO, Clockodo“We are very satisfied with the work we received from Dominik, he provided a high quality outcome. I would definitely recommend him to everyone who wants to develop their products in a professional and efficient way.”
Wolfgang Seidl · CTO, wikifolio“Dominik took our website from design to implementation, and we are delighted with the end result. I would thoroughly recommend him for his quick, professional, service and the high quality of his work.”
Will McGugan · CEO, TextualizeAbout
I'm Dominik Sumer, a software engineer with more than 10 years of experience. seriouscode is my freelance business. I've worked with teams like Hydrogrid, Clockodo and wikifolio, and alongside client work I build Vemetric and snappify.
More about me on dominiksumer.com →Tell me what you're building.
Send a few lines about your project, or book a call.