Full Stack Web Developer with 7+ years of experience and 4+ years focused on Angular. I build and ship features across the stack—from scalable Angular SPAs and Node.js APIs to self-hosted infrastructure. I’m structured and analytical, with an engineering background that helps me handle complex systems. I specialize in Angular migrations, scalable state management (RxJS/NgRx), performance optimization, and maintainable architecture. I also deliver end-to-end solutions using modern frontend and backend tooling, plus CI quality enforcement and mentoring for junior developers.

Nemanja Zivakovic

Full Stack Web Developer with 7+ years of experience and 4+ years focused on Angular. I build and ship features across the stack—from scalable Angular SPAs and Node.js APIs to self-hosted infrastructure. I’m structured and analytical, with an engineering background that helps me handle complex systems. I specialize in Angular migrations, scalable state management (RxJS/NgRx), performance optimization, and maintainable architecture. I also deliver end-to-end solutions using modern frontend and backend tooling, plus CI quality enforcement and mentoring for junior developers.

Available to hire

Full Stack Web Developer with 7+ years of experience and 4+ years focused on Angular. I build and ship features across the stack—from scalable Angular SPAs and Node.js APIs to self-hosted infrastructure. I’m structured and analytical, with an engineering background that helps me handle complex systems.

I specialize in Angular migrations, scalable state management (RxJS/NgRx), performance optimization, and maintainable architecture. I also deliver end-to-end solutions using modern frontend and backend tooling, plus CI quality enforcement and mentoring for junior developers.

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Experience Level

Expert
Expert
Expert
Expert
Expert
Expert
Intermediate

Work Experience

Full Stack Developer at Personal Project
March 2, 2025 - Present
Self-initiated project: community events platform built from scratch using Next.js, Fastify, PostgreSQL, and Digital Ocean. Implemented OAuth and JWT authentication, WebSocket-based real-time features, and a self-hosted deployment pipeline with an NGINX reverse proxy and SSL.
Solo Full Stack Developer at Kolo (kolo.it.com) — Personal Project
March 1, 2025 - Present
Built and shipped a community events platform from scratch using Next.js (SSR/SSG), Fastify, PostgreSQL, and DigitalOcean. Implemented OAuth and JWT authentication, plus WebSocket-based real-time features. Self-hosted the entire infrastructure using nginx reverse proxy, SSL, and a deployment pipeline on DigitalOcean.
Full Stack Developer at Kolo.it (personal/community education platform)
March 1, 2025 - Present
Built a community events platform from scratch: Next.js (SSR/SSG), Fastify, PostgreSQL, and DigitalOcean. Implemented OAuth, JWT authentication, and WebSocket-based real-time features. Self-hosted infrastructure using Nginx reverse proxy, SSL, and a deployment pipeline on DigitalOcean.
Front-End Web Developer at Fuentes AG
December 1, 2021 - Present
Architected feature modules with clear boundaries across large Angular monorepos, reducing inter-team coupling and enabling parallel delivery. Led incremental Angular 14→19 migration by introducing zone-less change detection, signal-based reactivity, and standalone components. Designed NgRx stores to separate UI state from domain state, keeping components thin and easier to test. Optimized input by offloading heavy computation to Web Workers and applying @defer with OnPush for high-traffic views. Reduced initial bundle size via route-level lazy loading and tree-shaking. Established Jest testing patterns and enforced ESLint rules in CI across a shared codebase. Mentored junior developers through code reviews and knowledge-sharing sessions on RxJS and state management.
Frontend Web Developer at Fuentis AG
December 1, 2021 - Present
Frontend development across the stack with a focus on Angular-based SPA delivery and self-hosted infrastructure to ensure fast, reliable user experiences. Collaborated with backend teams on API design (REST/GraphQL), improved performance, and helped shape frontend architecture and tooling.
Full Stack Web Developer at Fuentes AG
October 1, 2021 - December 1, 2021
Built and shipped full-stack features across the React/Node.js stack with tight sprint cycles. Designed modular folder structures and reusable patterns that improved long-term maintainability.
Full Stack Developer at Kolo.it (personal project)
October 1, 2021 - December 1, 2021
Built and shipped full-stack features using React/Node.js within tight sprint cycles. Designed modular folder structures and reusable patterns to improve long-term maintainability.
Full Stack Web Developer at SOZZ Technologies
October 1, 2021 - December 31, 2021
Built and shipped full-stack features across React/Node.js stack. Introduced modular folder structure and reusable patterns to improve long-term maintainability. Implemented unit tests, ESLint rules, and code quality improvements. Mentored junior developers through code reviews and knowledge-sharing sessions on RxJS and state management.

Education

Bachelor's Degree in Thermal Engineering at University of Belgrade – Faculty of Mechanical Engineering
January 11, 2030 - June 30, 2026
Master's Degree in Process Engineering at University of Belgrade – Faculty of Mechanical Engineering
January 11, 2030 - June 30, 2026
Master's Degree in Engineering (in process) at University of Belgrade – Faculty of Mechanical Engineering
January 11, 2030 - July 14, 2026
Bachelor's Degree in Thermal Engineering at University of Belgrade – Faculty of Mechanical Engineering
January 11, 2030 - July 14, 2026
Master’s Degree in Process Engineering (in progress) at University of Belgrade – Faculty of Mechanical Engineering
January 11, 2030 - July 16, 2026
Bachelor’s Degree in Thermal Engineering at University of Belgrade – Faculty of Mechanical Engineering
January 11, 2030 - July 16, 2026

Qualifications

OAuth 2.0 / JWT authentication
January 11, 2030 - June 30, 2026
Self-hosted infrastructure (NGINX reverse proxy, SSL, deployment pipeline on Digital Ocean)
January 11, 2030 - June 30, 2026

Industry Experience

Software & Internet, Media & Entertainment, Professional Services, Education, Computers & Electronics