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Branislav Popovic

@branislavpopovic

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Senior full-stack engineer focused on scalable microservices, clean architecture, and reliable delivery.

Serbia

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What I'm looking for

I’m looking for a role where I can take end-to-end ownership, simplify complex systems, and deliver highly reliable products—especially with microservices, real-time features, and strong engineering standards for correctness and maintainability.

I’m a software engineer with 8 years of ownership across the full stack—from monoliths to microservices—and from React to Node.js, Docker to Kubernetes. I build and scale systems serving millions of users, simplifying complex architectures with first-principles reasoning and a relentless focus on correctness, reliability, and maintainability.

At TechNova, I took full ownership of a microservices platform architecture and real-time systems serving millions of users. I architected and deployed a Node.js/React/Docker/Kubernetes microservices platform for 2M+ daily active users, reducing page load time by 40% through optimization and intelligent caching, and I led a team delivering a real-time collaboration feature using WebSocket and Redis Pub/Sub with zero downtime during rollout.

I also drive end-to-end transformation and quality improvements: I built CI/CD pipelines with GitHub Actions and Docker to cut deployment time from 45 minutes to under 8 minutes, and I improved team velocity by 25% through mentorship and structured code reviews. Earlier, I migrated a legacy PHP system to a Node.js/GraphQL API with a React frontend (improving response times by 60%), optimized PostgreSQL performance to reduce query time from 800ms to under 80ms, and introduced automated testing and reusable UI components to raise code coverage from 12% to 78%.

Experience

Work history, roles, and key accomplishments

Senior Full-stack Engineer

TechNova

Feb 2022 - Apr 2026 (4 years 2 months)

Architected and deployed a microservices platform (Node.js, React, Docker, Kubernetes) serving 2M+ daily active users, reducing page load time by 40% via optimization and intelligent caching. Led delivery of real-time collaboration using WebSockets/Redis Pub-Sub and built CI/CD (GitHub Actions, Docker) cutting deployment time from 45 minutes to under 8 minutes.

Node React Microservices Docker Kubernetes WebSockets GitHub Actions CI CD Caching

Full-Stack Developer

3oneseven

Mar 2020 - Jan 2022 (1 year 10 months)

Led full-stack transformation from legacy systems to modern architectures for enterprise SaaS, including building a SaaS analytics dashboard with real-time visualization for 300+ clients. Migrated a monolithic PHP application to a Node.js/GraphQL API and improved API response times by 60%, while optimizing PostgreSQL performance to reduce average query time from 800ms to under 80ms.

React D3.Js Express GraphQL Node PostgreSQL REST APIs

Web Developer

Builit

May 2018 - Feb 2020 (1 year 9 months)

Delivered 15+ client and internal projects across fintech and e-commerce using React, Vue.js, and Node.js, meeting scope and quality requirements under tight deadlines. Built a reusable TypeScript component library with Storybook, raised test coverage from 12% to 78% using Jest/Enzyme, and reduced production bundle sizes by 50% via Webpack optimizations.