Senior Node.js Developer

On behalf of our Client, Mobilunity is looking for a Senior Backend Developer.

In this role, you will be responsible for designing, developing, and maintaining backend services for a modern cloud-native payments platform. You will work on integrating multiple payment providers, contribute to the platform architecture, and help ensure the system remains reliable, scalable, and secure while supporting complex financial transactions.

We are looking for a proactive and experienced Backend Engineer with strong expertise in building high-performance backend systems for financial products. The ideal candidate enjoys taking ownership from design to deployment, is comfortable working with production microservices and PostgreSQL, thrives in a collaborative remote environment, and is passionate about building reliable, scalable, and maintainable software.
 

Requirements:
● 5+ years of backend development experience
● Strong commercial experience with Node.js, TypeScript, and PostgreSQL
● Proven experience building production-grade microservices
● Experience in fintech, payments, banking, or financial infrastructure products
● Good understanding of Docker, CI/CD, REST APIs, and cloud platforms (AWS is a plus)
● Experience with monitoring, debugging, and supporting production systems

Key Responsibilities:
● Develop and maintain backend services using Node.js and TypeScript
● Build and maintain payment provider integrations and APIs
● Design and optimize PostgreSQL databases and queries
● Contribute to microservices architecture and technical decisions
● Write well-tested, production-ready code
● Troubleshoot production issues and improve system reliability
● Collaborate closely with the Tech Lead and product team in a distributed environment
 

In return we offer:

• The friendliest community of like-minded IT-people
• Open knowledge-sharing environment – exclusive access to a rich pool of colleagues willing to share their endless insights into the broadest variety of modern technologies
• Mobilunity Medical Insurance program designed to attend our teams’ needs
• Paid vacations and sick leaves, including 5 paid days per year that don’t require a sick note
• Perfect office location in the city-center (900m from Lukyanivska metro station with a green and spacious neighborhood) or remote mode engagement: you can choose a convenient one for you, with a possibility to fit together both
• No open-spaces setup – separate rooms for every team’s comfort and multiple lounge and gaming zones
• English classes in 1-to-1 & group modes with elements of gamification
• Neverending fun: sports events, tournaments, music band, multiple affinity groups
   

Come on board, and let’s grow together!