Backend Software Developer

We are looking for a Medior Backend Software Developer to join a collaborative Scrum team focused on digital customer onboarding flows – specifically, registering contracts between customers and energy providers.

You will play a key role in designing, building, and maintaining scalable, high-performance backend services that power critical customer journeys. You’ll work closely with frontend developers, product owners, and other stakeholders to deliver reliable, efficient, and secure solutions.

Key Technologies You’ll Use

• NestJS (v11.x) – deep understanding of architecture patterns and modular design
• MongoDB / Mongoose – primary (transient) datastore experience in microservices
• TypeScript – strong proficiency with clean, type-safe code
• Redis, queues, async processing – for performance and scalability
• Auth0 – authentication and authorization (basic experience)
• Docker – containerized development and deployment
• Azure or AWS – cloud platform awareness
• CI/CD pipelines – familiarity with automated delivery

What You’ll Bring

• 3+ years of backend development experience
• At least 2 years building production-grade applications with NestJS + TypeScript
• Solid understanding of Git workflows (rebasing, merging, code reviews)
• Experience writing unit tests following NestJS best practices
• Familiarity with relational databases (PostgreSQL is a plus)
• Awareness of web security best practices (authentication, authorization)
• Experience working in Agile/Scrum teams (sprint planning, refinement, estimation)

Nice to Have

• End-to-end testing experience (e.g., MSW)
• Performance optimization through indexing in MongoDB
• Experience with queues or event-driven architectures

Who You Are

• A proactive problem-solver who thinks through multiple angles before coding
• Open communicator with a strong sense of ownership
• Detail-oriented and quality-driven
• Willing to contribute to user story refinement and consider broader technical impact