Beograd | Hibrid
18.11.2025.
Full-Stack Developer (Node.js/NestJS + React)
Location: Remote/Hybrid (by agreement)
Engagement: Full-time
About the role
We’re hiring a Full-Stack Engineer with a backend focus on Node.js (NestJS) and strong React skills on the frontend. You’ll work end-to-end on modern, high-traffic web applications—owning APIs, business logic, and polished UIs.
Responsibilities
- Design, develop, test, and maintain full-stack applications using Node.js/NestJS and React.
- Backend: build robust services, REST APIs (and WebSockets where needed), integrations with databases and external services.
- Frontend: create responsive, accessible UIs in React (Hooks), with state management (Redux or alternatives) and modern HTML/CSS tooling.
- Optimize for performance, scalability, and reliability across the stack.
- Maintain high code quality (unit/integration tests, code reviews, best practices).
- Collaborate with Product, Design, and other engineers in an Agile/Scrum workflow.
Requirements
- Strong experience with Node.js and NestJS (preferably TypeScript).
- Solid knowledge of React ecosystem (Hooks, state management, build tools).
- Experience with SQL (PostgreSQL/MySQL) and NoSQL (MongoDB or similar).
- Understanding of authentication/authorization (JWT/OAuth2).
- Comfort working in Linux environments and with Git.
- Fluent English (written and spoken).
Nice to have
- Real-time tech (Socket.IO/WebSockets), caching (Redis), messaging (Kafka/RabbitMQ).
- CI/CD, containers (Docker/Kubernetes), and observability (logging/monitoring).
- Next.js/SSR, testing (Jest, React Testing Library), and e2e testing.
- Experience delivering high-traffic products.
Upoznaj kompaniju
Zenith System Solutions is an innovative IT Services and Solutions Provider helping clients across the globe achieve consistent results. Inspire – Innovate – Deliver are the three action words that precisely define us.
With headquarters in Toronto (Canada), and delivery centers in India and USA, our team of over 400 plus professionals operates across 20 countries and 4 continents. It’s our workforce of PMI Certified Project Managers, Agile Scrum Masters, Enterprise and Solutions Architects, Business System Analysts, and Data Scientists, that is instrumental in keeping us on the forefront of delivering solutions in latest technology trends including, but not limited to, Analytics, IoT, AI, 5G, Cloud, DX, QA Automation, UI/UX, and DevOps.
Our partnership with technology players like SAP, Amdocs, and Qlik, and affiliation with the leading associations including the GSMA and TMForum empowers us to offer high-quality, on-time, industry-compliant solutions and enhancements to our clients across Telecommunications, Healthcare, Energy, Logistics, Retail, and Banking sectors.
Software Developer
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