Hi, my name is
Jan Ivanetič_
Software Engineer
Backend systems · Trading APIs · Go & Python · Building reliable trading infrastructure
01.
About Me
I build systems that power real-time trading — and I build them with a quality mindset most engineers never develop. Currently on the Exchange API team at Robinhood, working in Go and Python on systems handling real-time trading at scale. Before writing backend code full-time, I was the person stress-testing those systems, which means I know exactly where things break.
My background spans QA automation, backend engineering, and frontend development — which means I understand systems end-to-end and care deeply about correctness at every layer.
▸ location: Ljubljana, Slovenia
▸ email: jan.ivanetic10@gmail.com
02.
Work Experience
Software Engineer
Robinhood · Ljubljana, Slovenia
Exchange API Team — building and hardening the backend systems that power real-time trading on Robinhood's exchange.
- ▸Led backend implementation and production rollout of Replace Order (FIX & REST), including protocol changes, validation logic and feature flag enablement.
- ▸Extended and hardened the Golang-based FIX server: new fields, order lifecycle validations, fee handling and protocol compliance improvements.
- ▸Stabilized the FIX release pipeline by resolving dependency conflicts and eliminating regression failures impacting production deployments.
- ▸Improved WebSocket reliability and load handling, addressing message loss issues and contributing to connection buffering optimizations.
- ▸Expanded unit and integration coverage across FIX, REST and WebSocket systems, resolving complex production issues.
QA Engineer
Bitstamp by Robinhood · Ljubljana, Slovenia
Trading Team — designed and owned the quality and release validation layer for real-time trading infrastructure.
- ▸Designed and built automation infrastructure across FIX, REST and WebSocket APIs.
- ▸Led backend load and stress testing initiatives for real-time trading systems.
- ▸Acted as release validation gate for staging and production environments.
- ▸Partnered closely with backend engineers to diagnose and resolve cross-system failures.
DevQA & Frontend Engineer
Vitasis d.o.o. · Ljubljana, Slovenia
Sole QA engineer — built the company's test infrastructure from scratch while also contributing to frontend development.
- ▸Established company-wide test architecture as the sole QA engineer.
- ▸Built scalable end-to-end automation with Playwright (TypeScript) and SikuliX (Python).
- ▸Contributed to React frontend development and improved CI/CD pipeline reliability.
QA & Software Development
Krka, d. d. · Novo Mesto, Slovenia
Part-time role at one of Slovenia's largest pharmaceutical companies, working in the IT department on internal tooling and automation.
- ▸Developed internal tools in C#/.NET integrating Microsoft APIs and SQL databases.
- ▸Built RPA automation tools to streamline operational processes.
- ▸Enhanced Selenium automation suites and developed Python/PowerShell scripts for data processing.
03.
Projects
End-to-end test suite built for my faculty presentation as part of the EU Erasmus+ ESSA program. Demonstrates automated browser testing across a real application.
Side project — a C# tool that inspects files and classifies them as encrypted, corrupted, or clean. Useful for detecting potential malware or ransomware activity on a system.
04.
Skills
Languages
Testing & Automation
Backend & Protocols
Tools & Infrastructure
Databases
05.
Education
Bachelor's Degree · Computer Science and Information Technologies
University of Ljubljana · Ljubljana, Slovenia
Grade: 9 / 10
FRI UL — one of Slovenia's top computer science faculties. Guest Lecturer in the EU Erasmus+ ESSA Program (2023), authoring and delivering training materials.
High School Diploma · Electrical Engineering & Technical Gymnasium
Šolski center Novo Mesto · Novo Mesto, Slovenia
06.
Contact
I'm not actively looking for new opportunities, but my inbox is always open. Whether you have a question, a project idea, or just want to say hi — I'll do my best to get back to you.
I'm particularly interested in backend systems, real-time infrastructure, and fintech. If you're working on something in that space, I'd love to hear about it.