I build things
that ship.

Backend engineer at Abacus Umantis AG. Hackathon champion. Clean architecture, fast APIs, hard problems.

See my work Get in touch
Ognjen Dimitrijević

Projects

1st Place — HZS 7.0

MojeFinansije.rs

AI-powered financial platform. Smart budgeting, expense tracking, and financial insights using NLP. Built in 24 hours, won the hackathon.

Go AI / NLP HTML/CSS

PocketURL

Minimal URL shortener with click analytics and custom slugs.

Go Supabase REST API

eProfesor

Lesson scheduling platform for private tutors with real-time updates.

Spring Boot HTMX PostgreSQL

Bora

Discord music bot with queue management and playback controls.

Java JDA

AlienHunter

Retro arcade shooter. Waves of aliens, power-ups, high scores.

Java LibGDX

Experience

2025 — Now
Backend Software Engineer
Abacus Umantis AG
Building HR software for the Swiss market. Java, Spring Boot, enterprise-scale systems and microservices.
2025
Junior Developer
Node (via Upwork)
AI/NLP projects — data collection and annotation for Serbian language models.
2024
Software Engineering Intern
Vega IT
Advanced Java and Spring Boot backend development. Real-world enterprise applications and agile processes.
2023
Software Engineering Intern
Vega IT
First professional experience. Java and Spring Boot fundamentals, database integration.

Achievements

1st

FON Hackathon 2026

orvel.rs — 2026

1st

FON Hackathon HZS 7.0

MojeFinansije.rs — 2025

2nd

FON Hackathon

National hackathon — 2024

2nd

Petlja National

Programming competition — 2023

2nd

GMTK Game Jam

Metropolitan — 2023

3rd — SUMA HS Algorithm Competition Contender — AI National Olympiad (2025) Contender — Petlja Coding Olympiad (2025) 4th — VISER Programming (2022) 9th — VISER Programming (2023) NOAI Competition (2025) SIO Programming Olympiad (2025)

Let's build
something together.

Open to interesting projects, collaborations, and opportunities.

Email me GitHub LinkedIn Upwork