Ivan Mijatovic
Senior Backend Engineer Systems Architect at Polymarket Twin Engine
Belgrade, Central Serbia
Summary
👤
Senior🎓
Top SchoolIvan Mijatovic is a Senior Backend Engineer and Systems Architect with 11+ years of hands-on experience and a 15+ year trajectory building production systems used by thousands of companies worldwide. He designs deterministic, reliable backend and distributed systems—from real-time trading infrastructure that processes 200M+ market events per day to a global travel marketplace indexing 2.4M+ hotels and 300K+ activities. As an early engineer at a multi-tenant SaaS scaled to 20,000+ companies, he shaped core platform primitives for configurable work management, automations, and multi-view data projection. His specialty is building end-to-end pipelines and execution engines that preserve behavioral parity between live and replayed environments, a capability he used to achieve 99.6% parity in trading backtests. Based in Belgrade, he blends practical engineering (Laravel, Node.js, TypeScript, Redis, MySQL/Postgres, WebSockets) with architectural rigor to deliver scalable marketplaces, trading systems, and real-time data platforms.
11 years of coding experience
9 years of employment as a software developer
Bachelor’s Degree, Business Informatics, Bachelor’s Degree, Business Informatics at University of Belgrade
English, Serbian
Github Skills (29)
clockify10
react-dnd8
event-calendar8
chrome-extension8
fullcalendar8
browser-extension8
javascript7
drag7
browser7
drag-and-drop6
multilingual4
sitemap-xml4
controller4
laravel-package4
migration4
Programming languages (3)
Github contributions (5)
ivanmijatovic89/proto-maker-generator
Mar 2015 - Apr 2017
Contributions:1 release, 86 pushes, 1 branch in 2 years 1 month
ivanmijatovic89/pricing-calculator
Nov 2023 - Mar 2025
Contributions:8 pushes, 1 branch in 1 year 4 months
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