Senior Mobile Full Stack Developer iOS Android Spring Boot 0 5 FTE

Square One Resources REMOTE WARSAW 2026-08-06
  • 3+ years of commercial iOS development using Swift and UIKit.
  • 3+ years of commercial Android development using Kotlin and Jetpack Compose.
  • Experience managing mobile application releases end-to-end.
  • Experience working with existing Spring Boot applications.
  • Knowledge of mobile security concepts and secure authentication.
  • Experience building or maintaining CI/CD pipelines.
  • Experience working in production support environments
  • Optional - Working knowledge of AWS services such as EC2, RDS, S3, CloudWatch, WAF.
  • Developer will be responsible for the maintenance and incremental development of a production mobile solution consisting of native iOS and Android applications, as well as Spring Boot backend services and mobile application release management.
  • Project details:
  • Start: ASAP
  • Workload: 50% FTE
  • Equipment: provided by the client
  • Working hours: business hours only (08:00–18:00 GMT/BST)
  • On-call: no out-of-hours support required
  • Recruitment process: 2 technical interviews
,[Maintain and enhance native mobile applications for iOS and Android., Investigate, troubleshoot, and resolve production issues., Implement minor feature enhancements and improvements., Ensure compatibility with new mobile operating system releases., Manage App Store and Google Play release processes., Support and maintain the Spring Boot backend., Participate in incident analysis, root cause investigations, and resolution activities., Collaborate with cross-functional engineering and delivery teams in an Enhance & Operate model.] Requirements: iOS, Android, Spring Boot, Swift, UIKit, PostgreSQL, Spring Security, Kotlin, Java, Jetpack Compose, AWS Additionally: Sport subscription, Private healthcare.