THE PERSON BEHIND HTTPSTEF
Stefan Kupreshak.
Principal Architect. An engineer who takes personal responsibility for his work.

I’m Stefan, a Principal Architect with more than 10 years of experience. I’ve worked in more than 10 programming languages, including Elixir, Go, Rust, Java, JavaScript and TypeScript. HTTPSTEF is my independent engineering business, based in Serbia.
I work directly with founders and engineering teams. I care about understanding why we’re building something, explaining the technical choices and staying involved in delivery. The person you speak with is the person doing the work.
- Understanding before code
- Start with the problem, context and constraints.
- Clear communication
- Understandable decisions, risks and next steps.
- Ownership through delivery
- Architecture, implementation and production.
ENGINEERING EXPERIENCE
More than 10 programming languages.
Elixir, Go, Rust, Java, JavaScript and TypeScript are part of my experience. I choose technology to suit the problem and the team maintaining the system.
Data systems and cloud
ClickHouse, Kafka, data pipelines and cloud infrastructure. From architecture to everyday operation in production.
Direct collaboration, from day one.
Through HTTPSTEF, I combine technical direction with hands-on engineering. We talk directly, agree on clear priorities and validate solutions against real conditions.
LET’S BUILD SOMETHING GOOD.
What would you
like to solve?
Send me a few lines about your project, your team and where you need support. I’ll reply personally.
stefan_vg@hotmail.comConnect on LinkedIn