Description

I'm a backend developer with professional experience building production systems in C and Java, including a DPDK-based Carrier Grade NAT developed over several years, and a Java/Spring REST API backend serving a real-time networking application with a PostgreSQL database.

More recently I've expanded into Python automation and data processing — building scripts and pipelines that eliminate manual work with Excel, CSV, and PDF files, as well as web scrapers and AI-assisted data tools. I'm comfortable working across the stack from low-level systems code to REST APIs and automated workflows.

My background is in Linux environments and I work daily with Docker, Git, and CLI tooling. I've contributed to both startup environments and larger R&D projects, which means I'm used to working independently, communicating clearly, and delivering working solutions rather than prototypes.

What I can help with:

- Backend development in Java/Spring or Python

- Automation scripts and data processing pipelines

- Linux system integration and Docker environments

- REST API development and third-party integrations

- Network-adjacent backend work

Industry field of expertise

Languages

Croatian
Native or bilingual
English
Fluent

Workplace preferences

Remote only

Primarily works remotely

Mercor (USA
SWE Expert Writer
TECH
February 2026 - May 2026 (3 months)
Audited AI-generated code by conducting deep-dive analyses of pull requests in open-source repositories to validate logic and security. Engineered technical requirements and documentation to guide AI agents in completing complex engineering tasks. Provided architectural feedback to improve the reliability and performance of autonomous AI coding agents.
AI Agent Code Review
Playnetic
Game Developer
VIDEO GAMES AND ANIMATION
April 2025 - February 2026 (10 months)
United Kingdom
Maintained and extended a JavaFX game engine, ensuring cross-platform compatibility and smooth gameplay. Architected new features in collaboration with designers, converting creative concepts into scalable code. Resolved complex performance bottlenecks and logic bugs to enhance system reliability. Upgraded core engine modules to support advanced game mechanics.
Java JavaFX
5x9 Networks (Pet Puta Devet)
Software Engineer
TELECOMMUNICATIONS
August 2019 - October 2024 (5 years and 2 months)
Zagreb, Croatia
Architected a Virtual CGN solution from scratch using DPDK, implementing ALGs for ICMP, FTP, PPTP, ESP, and SIP. Engineered a Java Spring backend to manage virtual appliances via OpenStack and RESTful APIs. Expanded Virtual BNG capabilities by integrating CGN and collaborating on MPLS support. Modernized data plane communication using Protocol Buffers, significantly increasing serialization efficiency. Automated CI/CD pipelines using Jenkins and Shell scripts for Docker, QEMU, and VMware image generation. Validated carrier-grade reliability through performance testing with Ixia hardware/software.
C Java Spring boot Linux DPDK