01
Software architecture
& engineering
Backend systems, APIs and applications. Clear technical decisions, code your team can maintain and architecture that evolves with your product.
INDEPENDENT ENGINEER. PERSONAL ACCOUNTABILITY.
Complex systems.
Clear solutions.
I’m Stefan Kupreshak. I help teams ship reliable software, build sound architecture and integrate AI where it delivers real value.
Clear architecture. Reliable delivery.
FEATURED CLIENTS IN SERBIA
AgroarmSneaker Hedonism
01 / WHAT I DO
A hands-on partner for
a hard technical problem.
I work alongside your team and take responsibility for technical decisions and delivery. From the first sketch to a system running in production.
Software architecture
02
Data, cloud
& infrastructure
Data pipelines, analytics systems and cloud platforms. Reliable data flows, understandable infrastructure and visibility into what happens in production.
03
Practical
AI integration
Connect AI models to your data, tools and everyday workflows. Knowledge search, assistants and automation, with quality checks, access controls and monitoring.
AI WITH A JOB TO DO
From a promising demo
to everyday value.
AI should solve a concrete problem. Together, we choose a useful application, test it against real data and build an integration your team can use and maintain.
- 1
Context
Your data and business workflow
- 2
Integration
Models, tools and existing systems
- 3
Validation
Quality, access and human oversight
02 / SELECTED CLIENTS
Different industries.
The same engineering care.
Working with Serbian and international businesses across different industries.
CLIENTS IN SERBIA
AGRICULTURE / SERBIA
Agroarm
Agricultural products for crop protection and plant nutrition.
About the companyRETAIL / SERBIA
Sneaker Hedonism
Sneaker retail in Belgrade.
About the companyINTERNATIONAL CLIENTS
CYBERSECURITY
hunt.io
Infrastructure maintenance for a threat hunting and adversary infrastructure intelligence platform.
About the companyCONSTRUCTION / FRANCE
Elite Constructions
Website development for a construction and renovation business in France.
View the website03 / ABOUT ME
The person behind
HTTPSTEF? That’s me.
10+years of experience
Stefan KupreshakHTTPSTEF / FOUNDER
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.
04 / HOW WE WORK
Start with a conversation.
Move forward with a plan.
- 01
Understand the problem
We talk about your product, your team and what’s slowing you down.
- 02
Set the direction
We agree on scope, priorities and the technical approach. You know what we’re doing and why.
- 03
Build and validate
We deliver in steps, check against real conditions and document the decisions.
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