Built the client interface serving thousands of B2B customers — a web app and an Android app on Google Play — plus an automation bot that processes hundreds of thousands of fuel transaction files a day, integrated directly with fuel providers.
Freelance software engineer · Serbia
Software that runs your business, not the other way around.
I build custom software, integrations and payment systems for companies that need technology to just work — end to end, from the first line of code to a system your team relies on every day.
Fuel logistics, payments, steel production, music streaming — different industries, same job: build the system the business runs on, and make it hold.
5+
years shipping production systems
1000s
B2B users on systems I built
2×
sole technical founder
01 · What I do
01
Custom software & products
I take a business problem and build the product around it — backend, web and mobile — from first requirements to a live system, and I keep maintaining it after launch.
02
Integrations & automation
I connect the systems you already run — accounting, logistics, suppliers — and automate the manual work between them. Fewer spreadsheets, fewer copy-paste mistakes, faster operations.
03
Payments & acquiring
I integrate payment processing and acquiring into your product, so customers can pay you the way they expect — securely, and without surprises at checkout.
Products in production
Delivered an iOS and Android app with hardware integration, end to end: payment acquiring, a backend, an admin interface for order management, an online shop, and integration with a transportation partner.
Built and owned the product that solves the company's core operational problem: allocating raw material to customer orders. Backend and frontend, from design to the system operations teams run every day.
Sole technical founder of a music-streaming platform — architected and built the entire stack from a blank page: backend, acquiring integration, and everything in between.
Production music-licensing platform used by multiple TV channels — Flutter desktop app, Go backend, and a Vue.js upload tool. Ran it end to end, including AI-agent and LLM features in the content pipeline.
03 · Full-time experience
Where I have worked
- 2024–2026
Smart Steel Technologies
Software EngineerOwned the materials-allocation product end to end; promoted within 14 months.
- 2022–2024
NtechLab
Frontend DeveloperLed the Flutter upgrade and the move to trunk-based development.
- 2022
Webware Internet Solutions
Software EngineerSole developer of an internal SPA, from requirements to production.
- 2021–2022
Lins-Intek
Frontend DeveloperDelivered payment, subscription and admin modules for client apps.
04 · Speaking Watch → — Lord of the Memory: The Return of the Leak Watch → — Flutter for Frontenders — or There and Back Again Watch → — Flutter for Frontenders — or There and Back Again
On stage
Lord of the Memory: The Return of the Leak
DevFest Berlin 2025
Flutter for Frontenders — or There and Back Again
code.talks / Vue.js Talks / DevFest Berlin 2024 / SST
Flutter for Frontenders — or There and Back Again
Ural Digital Weekends 2023
05 · About
A bit about me
5+ years building production software end to end — backend, web and mobile — for companies that need systems that don't break. I've also been the sole technical founder twice over: I architected fjalla, a music-streaming platform, from a blank page, and built Cinemusic, a music-licensing platform used by multiple TV channels, where I also put AI agents and LLM calls to work on the content pipeline.
Based in Serbia, registered as an official business — work with me comes with contracts and invoices, no informal arrangements. I work in English, German and Serbian.
Also comfortable with
GoTypeScriptFlutterPostgreSQLKafkaAI agents & LLM integration
Education Computer Science — IU International University of Applied Sciences
06 · Get in touch
Tell me what you're building
Describe the problem, not the tech stack — I reply within a day.
Or reach me directly Email ·
alex.gorbunov.de@gmail.com
LinkedIn ·
linkedin.com/in/gorbunovalex
GitHub ·
github.com/GorbunovAlex