Senior Backend Developer

Senior Mobile Backend Developer (Java / Kotlin, AWS, Microservices) Contract

Manchester | Hybrid

We are hiring a Senior Mobile Backend Developer to work on high-scale, cloud-native platforms supporting mobile applications in a regulated environment.

This is a hands‑on backend role focused on Java / Kotlin microservices, secure API design, and cloud delivery. You will contribute across the full SDLC while influencing engineering standards, best practices, and technical quality.

• Design and build scalable backend services using Java or Kotlin and Spring Boot
• Develop secure, mobile‑facing APIs using OAuth 2.0 and modern authentication patterns
• Work with microservices and event‑driven architectures
• Deploy and support services in AWS / cloud environments
• Apply TDD / BDD and automation testing to deliver high-quality code
• Collaborate with engineers, technical leads, and stakeholders across delivery teams
• Mentor peers and contribute to continuous improvement initiatives

• Strong backend development experience with Java and / or Kotlin
• Spring Boot, REST APIs, microservices architecture
• Secure API design, OAuth, authentication / authorisation

AWS o...