Senior Java Backend Developer (Node.js / TypeScript)

We have an exciting opportunity with one of our clients who specialize in telecommunications and large-scale digital commerce platforms. The Digital Domain team operates mission-critical Backend for Frontend (BFF) services supporting checkout, customer management, and commerce processes for millions of users.

• 6+ years of commercial backend development experience
• Strong expertise in Java 21+, Spring Boot 3.x, REST API / OpenAPI, Spring Security / OAuth2 / JWT
• Experience with API design and system integrations
• Experience with event-driven architecture and distributed systems
• Experience with asynchronous flows and messaging concepts
• Experience with unit and integration testing
• Knowledge of monitoring, logging, troubleshooting, and observability
• Hands-on knowledge of MongoDB or similar NoSQL databases
• Experience with Maven or similar build tools
• English level B2+ for technical documentation and collaboration
• Senior-level candidates should demonstrate distributed system design experience, production ownership and incident resolution, mentoring and technical leadership experience, technology migration/transformation experience, and ability to influence engineering standards and best practices

Nice to have:

• Commercial experience with Node.js and TypeScript
• Experience with Express, Fastify, or NestJS frameworks
• Knowledge of Kafka or RabbitMQ
• Experience with Docker and Kubernetes
• Familiarity with GraphQL
• Experience with Terraform and Infrastructure as Code
• Knowledge of OpenTelemetry and distributed tracing
• Experience with Jest or Vitest testing frameworks
• Understanding of npm / pnpm ecosystem

• Design, develop, and maintain scalable backend services using Java 21+ and Spring Boot 3.x
• Build and integrate REST APIs and support integrations with multiple internal and external systems
• Work with event-driven and distributed architectures, including asynchronous communication and messaging systems
• Support production environments through monitoring, troubleshooting, observability, and continuous improvement activities
• Collaborate with architects, frontend developers, product teams, and technical leads in agile delivery teams
• Participate in technology transformation initiatives toward Node.js / TypeScript ecosystem
• Write unit and integration tests while ensuring high code quality and resilience standards
• Contribute to production-grade engineering practices, reliability, and maintainability of services