About
Igor Mihajlov#
Backend Engineer · Belgrade, Serbia
LinkedIn · GitHub · Codeforces · [email protected]
A dedicated Software Engineer with hands-on experience in low-level programming and high-level distributed systems. Strong background in backend development, microservices, and cloud deployment. Passionate about building scalable, maintainable systems and learning new technologies.
Technical Skills#
| Category | Technologies |
|---|---|
| Languages | C, C++, Go, Lua, Python, TypeScript |
| Databases | PostgreSQL, Cassandra, ClickHouse, MongoDB |
| Infrastructure | Docker, Nginx, OpenResty, ArgoCD, AWS, GCP |
| Messaging | NSQ, NATS |
| Other | Git, Jenkins, CMake |
Experience#
Backend Engineer · Comit International · Mar 2025 – Present
- Built backend services using TypeScript with NestJS, PostgreSQL, MongoDB, and AWS
- Worked on Vitals4Pets, a veterinary health monitoring platform tracking ECG and vital signs via wearable devices
- Worked on FairPlay Mobile, an online store for purchasing eSIM data plans
- Developed a CMS for a tourist app for Kalemegdan fortress, enabling content management for historical monuments
Backend Engineer — Finance Team · Playtronix · Sep 2024 – Mar 2025
- Developed a bet processing microservice in Go handling incoming wagers via NSQ
- Coordinated with financial services through NATS for balance checks and transaction management
- Used PostgreSQL for transactional data and ClickHouse for analytics and reporting
- Deployed via ArgoCD in a GitOps-based microservices environment
Backend Engineer — VM Team · Tenderly · Aug 2023 – Apr 2024
- Worked on a Web3 development platform for smart contract debugging, simulation, and monitoring
- Contributed to integrating new EVM-compatible blockchain networks into the platform’s infrastructure
- Maintained and optimized backend services in Go supporting transaction simulation and real-time blockchain indexing
Backend Engineer — Order Management Team · LotusFlare · May 2022 – Aug 2023
- Returned to continued backend development on a cloud-native BSS platform used by telecom operators
Backend Engineer — Rewards Management Team · LotusFlare · Oct 2019 – Oct 2020
- Built and maintained APIs in Lua on OpenResty (Nginx-based)
- Wrote queries and maintained data models in Cassandra for high-volume transactional data
- Used Elasticsearch for logging and troubleshooting across microservices
Education#
Bachelor of Engineering, Computer Engineering · Union University · 2016 – 2025
Računarski Fakultet, Belgrade, Serbia
Languages#
Serbian — native · English — C1 · German — A2