Mid Backend Engineer

2 weeks ago

Sydney, New South Wales, Australia Bilue Full time $90,000 - $120,000 per year

About the Role

As a Back-end Engineer (BFF) at Bilue, you will take ownership of the Backend-for-Frontend (BFF) layer that powers our clients' mobile applications. You'll be responsible for developing and maintaining backend services tailored specifically to the needs of mobile front-ends, with a focus on performance, usability, and scalability.

This role is ideal for someone with solid experience in Kotlin and a good understanding of Spring Boot. Familiarity with the Server-Driven UI pattern is a strong plus.

Key Responsibilities

  • Design, build, and maintain BFF services that serve our mobile apps with optimised, tailored APIs
  • Collaborate closely with mobile engineers, designers, and product managers to deliver seamless user experiences
  • Use Kotlin with Spring Boot to develop scalable backend services
  • Implement and maintain patterns for feature toggles, A/B testing, and dynamic UI rendering via server-driven approaches
  • Ensure strong API versioning, documentation, and backward compatibility for mobile consumption
  • Write clean, testable, and well-documented code that follows best practices
  • Identify bottlenecks, debug performance issues, and propose reliable solutions
  • Contribute to discussions on API design, system architecture, and scalability

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