Real-Time Distributed Chat System
A Go backend for horizontally scaled WebSocket traffic, Redis Pub/Sub fanout, connection lifecycle handling, and Dockerized multi-node testing.
- Go
- WebSocket
- Redis Pub/Sub
- Docker
- React
Belgrade, Serbia · Open to Remote / Hybrid / On-site & Relocation
Luka Golubovic
Software Engineer Product-minded · Systems-aware · Delivery-focused
Software engineer with 4+ years building production software across product, service, data, and delivery work. I move between ambiguous problems and shipped systems: clarifying requirements, designing reliable flows, debugging production issues, and collaborating across teams until the work is usable.
Experience
-
Engineering Software Lab Serbia · Belgrade
Software Engineer
Sep 2022 - Present
- Build and maintain production services for enterprise healthcare workflows, with ownership across validation, authorization, and failure-mode handling.
- Design asynchronous coordination flows for reliability, caching, and cross-service communication.
- Own data workflows, schema evolution reviews, and migration planning across multiple database-backed products.
- Manage delivery pipelines, release cycles, quality gates, and production debugging with focus on predictable handoffs.
- Collaborate through planning rituals, code reviews, architecture reviews, and technical documentation.
- Support product delivery across service and UI boundaries, including a major platform modernization across 120+ modules.
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Freelance · Part-time · Remote
Software Engineer
2023 - Present
- Build client software from discovery to release, spanning service workflows, data models, and user-facing product surfaces.
- Clarify workflows with stakeholders and ship usable increments under changing requirements.
- Design admin, authentication, reporting, and operations screens with maintainable state and handoff boundaries.
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Docloop · Belgrade
Software Engineer
Sep 2021 - Sep 2022
- Maintained production e-invoicing workflows where data correctness, integrations, and audit behavior mattered.
- Tested integration behavior with repeatable scripts, then documented partner-facing contracts.
- Supported partner integrations with accounting software and shipped fixes for production invoicing workflows.
Education: Bachelor's Degree in Software Engineering - Metropolitan University Belgrade · 2023 - 2027 (expected)
Featured projects
all projects 
Architex: System Design Practice Platform
A Node.js/Express workflow backend for system-design submissions, JWT role rules, SQLite persistence, and Excalidraw review flows.
- Node.js
- Express
- SQLite
- JWT
- React
- +3
Project Aeon: Local-First Assistant Platform
A FastAPI backend that orchestrates local RAG retrieval, ChromaDB vector search, Ollama generation, and clean API boundaries before the UI.
- FastAPI
- ChromaDB
- Ollama
- RAG
- Vue 3
- +1
Iris: Print-Shop Operations Web App
A React frontend web app for print-shop operations: role-based authentication, work-order CRUD, customer/location management, public tracking, and Recharts analytics.
- React
- TypeScript
- Vite
- Tailwind CSS v4
- shadcn/ui
- +4