Senior Mobile Engineer - Cross Platform
Budapest, Hungary · 4+ years experience · Full-time · Hybrid · Posted Sep 30, 2026
At a glance
- Experience
- 4+ years experience
- Employment
- Full-time
- Workplace
- Hybrid
- Location
- Budapest, Hungary
About the role
- We are building a new generation of tracking services for elite and semi-professional sport, bringing powerful technology to an area of sport that has never had access to it before.
- As a Senior Mobile Engineer, you will take ownership of the mobile application that sits at the heart of the user experience.
- Working within a small, highly collaborative cross-functional team, you will have significant autonomy to design, architect and build solutions across both iOS and Android.
Responsibilities
- Own the design, architecture and implementation of our mobile application across iOS and Android
- Build and maintain the capture layer, including camera control, session management, recording and local storage
- Design and implement coordination between multiple devices operating as a single system
- Build resilient media and data transfer capabilities that perform effectively across unreliable and intermittent network connections
- Integrate native components developed by our computer vision teams into the mobile application
- Manage application releases across all environments, including app store submissions, testing tracks and release processes
- Implement monitoring, crash reporting and observability capabilities to support products operating in the field
- Ensure code is scalable, maintainable, testable and aligned with engineering best practices
- Collaborate with Product, Design, Backend and Computer Vision teams to deliver high-quality solutions
- Utilise AI-assisted and AI-augmented development practices as part of the team's engineering approach
Requirements
- 4+ years of commercial experience developing mobile applications
- Experience delivering and maintaining applications across the full software lifecycle, from concept through to production release
- Demonstrable experience shipping applications to the App Store and/or Google Play Store
- Strong experience with cross-platform mobile development technologies such as React Native, Flutter or Kotlin Multiplatform
- Strong React and TypeScript experience
- Experience designing and architecting mobile applications
- Strong understanding of native iOS and Android development using Swift and Kotlin
- Experience integrating native functionality into cross-platform applications
- Experience working with mobile camera functionality, media capture and local storage
- Experience building applications that operate reliably across variable network conditions
Preferred qualifications
- Experience with CI/CD pipelines and automated mobile release processes
- Experience writing unit and integration tests
- Experience with Git-based development workflows and code review practices
- Familiarity with Jira or similar task management tools
- Experience working with design systems and shared component libraries
- Understanding of real-time or latency-sensitive systems
- Experience integrating computer vision or machine learning components into mobile applications
- Experience coordinating multiple devices within a single workflow or distributed system
Benefits
- Annual Leave: Standard according to local labour law
- Flexible Working: Hybrid model (2 days in our office per week)
- Access to sporting events and tickets
- Sony Group Company Discounts
- Cafeteria options (SZÉP Card, Nursery & Kindergarten contributions, Annual MOL Bubi Pass)
- Private Medical Insurance
- Life & Accident Insurance
- MindentMent Dental Clinic discounts
- Seniority Awards
- Employee Assistance Program
Workplace
- Hybrid model (2 days in our office per week)
Skills
- Swift
- Kotlin
- TypeScript
- React
- C++
- REST APIs
- WebSocket APIs
- AWS
- Git
- GitHub Actions
- Jira
- React Native
Show all 14 skills
- Flutter
- Kotlin Multiplatform
