This is us

At Avenga, we believe that human creativity empowers technology that matters. Operating globally, our 6000+ specialists provide a full spectrum of services, including business and tech advisory, enterprise solutions, CX, UX and Ul design, managed services, product development, and software development.

This is the job

In Bulgaria, we are actively seeking a backend engineer with strong Node.js and MongoDB expertise who enjoys solving infrastructure and architecture challenges. The position is perfect for a professional who is comfortable working in a microservices environment and has experience modernizing systems by replacing third-party cloud services with self-hosted solutions while maintaining reliability and performance.

As a Node.js Backend Developer, you will be responsible for modernizing key infrastructure components by replacing existing cloud-based services with self-hosted alternatives. You will work closely with backend engineers and architects to ensure scalability, security, and reliability across the platform.

This is you

• Strong commercial experience with Node.js and TypeScript.

• Solid experience working with MongoDB, including schema design and performance optimization.

• Experience developing and maintaining microservices-based applications.

• Knowledge of REST APIs and backend integration patterns.

• Understanding of distributed systems, scalability, and security best practices.

• Familiarity with Git and modern software development workflows.

• Knowledge of containerization and cloud-native technologies (Docker, Kubernetes).

Nice-to-have skills:

• Experience with Firebase migrations.

• Exposure to Java-based backend systems.

• Experience working with Angular applications.

• Experience migrating or replacing cloud-managed services with self-hosted/on-premise alternatives.

This is your role

• Replace the existing Firebase implementation with a locally hosted solution based on MongoDB.

• Design, implement, and maintain backend services using Node.js and TypeScript.

• Replace the current object storage service with a self-hosted storage implementation.

• Integrate new data storage and persistence layers within the existing microservices ecosystem.

• Collaborate with Java backend and Angular frontend teams to ensure seamless service integration.

• Optimize performance, reliability, and security of backend services.

• Participate in architecture discussions, code reviews, and technical planning.

What awaits you at Avenga?

Through our values, Better Minds, Bolder Ideas, and Bigger Hearts, we strive to provide you with the tools, autonomy, trust, and assistance you need to excel. Enjoy benefits like private health insurance, well-being programs, flexible and hybrid work models, laptops and gear, training, language classes, social events, great offices, and more.

At Avenga, everyone matters. We provide equal opportunities in recruitment, career development, and leadership, regardless of race, ethnicity, gender identity, sexual orientation, disability, age, religion, or any other characteristic. We are committed to fostering a work environment where our diverse community of employees, candidates, and business partners actively shapes our growth. By bringing together people from different backgrounds and experiences, we build a workplace where everyone feels free to be themselves while honoring the boundaries of others.