JavaScript Developer (intermediate/senior)

Location: Novi Sad, on-site position  //  Work type: Full-time, long-term
Candidates available to start immediately are highly encouraged to apply.

Responsibilities

• Develop high-quality and scalable front-end app using React (Hooks, Redux/Zustand)
• Build secure and efficient back-end APIs using Node.js (Express.js or NestJS)
• Create robust integrations with databases and external services
• Design and maintain RESTful APIs
• Work with AWS services (S3, SQS, SNS) to support cloud deployments and messaging
• Participate in architecture decisions and system design
• Collaborate closely with UX/UI, QA and DevOps teams
• Maintain a high standard of code quality through code reviews and testing
• Reference: KvpkUaLbNKSi4B2tCUSjCsVSdFErUHjbUJ2J44PX2snmaXSD1N1rmNSiM8RQrqlp

Requirements

• Strong experience with JavaScript & ES6+
• 3+ years in production with Node.js and/or React
• Strong knowledge of JavaScript Design Patterns
• Experience building:
  • REST APIs (Express.js or NestJS)
  • Modern front-end applications (React)
• Familiarity with:
  • JWT / OAuth / session authentication
  • Relational DBs (PostgreSQL, MySQL)
  • NoSQL stores (MongoDB, Redis)
• Experience with AWS (S3, SQS, SNS) — strong plus
• Understanding of Git, CI/CD, and testing best practices
• Experience with monorepo tools (Nx, Turborepo)

Nice to Have

• React Native or mobile experience
• Experience with microservices and event-driven architecture
• Experience with offline-first web or mobile applications
• Docker & containerization experience

What do we offer you

• Engaging and innovative projects
• Work alongside seasoned professionals
• Clear career growth and advancement opportunities
• A culture that fosters learning and growth
• Competitive salary based on your expertise
• Supportive and relaxed work environment
• Fully equipped office and daily complimentary lunch