Senior Backend Developer (m/f)

Njuškalo is the leading Croatian marketplace, connecting more than 1.1 million active users daily. We pride ourselves on offering our users a simple, intuitive platform for online trading, while providing our employees with a dynamic environment full of opportunities for growth and development.

With over 11,000 new ads created daily, your work will directly impact users across the country – from your friends and family to your neighbors and even your postman. Imagine seeing your code “in action” and having those bragging rights!

As a Backend Developer, you’ll join a continuously evolving, large-scale project that has been improving lives by connecting buyers and sellers for years.

Who are we looking for?

We’re looking for someone who can bring the following skills and qualities to our team:

• Strong proficiency in TypeScript and modern JavaScript (ES6+)
• Solid experience with NestJS (or other similar framework) and Express, with a deep understanding of API architecture and backend service design
• Familiarity with PostgreSQL and ORM tools like TypeORM, including migrations and seed data handling
• Experience in building scalable, modular backend systems, ideally in a microservice or event-driven environment
• Ability to work collaboratively in agile, cross-functional teams
• Proactive communication skills when working with product managers, QA engineers, and other developers
• A mindset focused on solving complex backend challenges, optimizing performance, and handling large volumes of data

Bonus Skills:

• Familiarity with CI/CD pipelines
• An interest in creating and improving user flows
• Familiarity with PHP (ideally Symfony or Laravel)
• Solid understanding of how frontend frameworks work and interact with backend

What you'll work on

We are looking for a passionate Backend Developer to join one of our four cross-functional development teams. Here’s the tech stack waiting for you:

• NestJS and TypeScript as the core framework and language for building scalable server-side applications
• PostgreSQL with TypeORM for database interaction
• Jest for unit, integration and end-to-end testing
• Docker for containerized development and production environments
• Swagger (OpenAPI) for automated REST API documentation
• Redis and Socket.io for real-time communication and caching

 How We Work

At Njuškalo, development is organized into agile, cross-functional teams that include frontend developers, backend developers, QA specialists, product owners, and mobile developers.

These teams are designed to foster collaboration, autonomy, and ownership, enabling seamless end-to-end product delivery. Each team works closely with Data Science to solve complex challenges and deliver value to our users.

On the frontend side, our focus isn’t just on styling and animations; we tackle exciting problems like:

• Consuming APIs
• Communicating with backends
• Processing large amounts of data
• Creating seamless user flows

Your proactive communication with designers, product development, and team members will be crucial in delivering exceptional results.

Why you'll Love It Here

At Njuškalo, we care about our team and their well-being. Here’s what we offer:

• A positive and supportive development team culture
• Hybrid work possibilities after onboarding
• Co-financed Multisport card
• Annual medical check-ups
• Family benefits (financial support for new parents, 2-month paternity leave, flexible work hours for new moms)
• Days off for birthdays and other life milestones
• Your choice of equipment (Linux or macOS laptop)
• Dog-friendly offices
• 22-30 vacation days (depending on tenure and age)

Ready to Make an Impact?

If this sounds like the next step in your career, apply today using the link below!