Senior Mobile Developer (Android) – Contractor

Hawk-Eye Innovations is seeking an experienced Senior Mobile Developer (Android) on a contract basis to join their Tracking team. The role involves enhancing and modernizing an in-house Android application used in live sports tracking and testing environments. Key responsibilities include Kotlin development, working with camera pipelines, real-time video capture, and integrating on-device machine learning for ball and player tracking. The contractor will lead best practices, improve performance, stability, and user experience, and support occasional on-site testing at sports venues.

Must Have

• Lead best practices for Android mobile development
• Design, develop, and maintain high-quality Kotlin-based Android applications
• Own complex features from design through to delivery
• Work closely with developers across Tracking, Tooling, and Computer Vision
• Support testing, debugging, and deployment of new features
• Participate in technical discussions and code reviews
• Contribute pragmatically in an agile, sprint-based environment
• Strong, hands-on experience in Android development using Kotlin
• Deep understanding of Android application architecture, lifecycle, and threading
• Proven experience working with the Camera 2 API in production
• Experience building high-performance, real-time mobile applications primarily using Kotlin
• Solid understanding of software design principles and clean code practices
• Comfortable working independently and taking ownership as a contractor

Good to Have

• Experience running or integrating machine learning models on mobile devices
• Understanding of on-device performance optimisation for video or ML workloads
• Experience with mobile video capture or processing pipelines

Senior Mobile Developer (Android) – Contractor

Join Hawk-Eye Innovations as a Senior Mobile Developer (Contractor)

We’re looking for an experienced Senior Mobile Developer (Android) to join our Tracking team on a contract basis, supporting the development of an in-house mobile application used in live sports tracking and testing environments.

This role is focused on Android development using Kotlin, working closely with camera pipelines, real-time video capture, and on-device machine learning. The application is currently used in Cricket, with scope to expand into other sports.

This is an urgent contractor requirement, ideally suited to a UK-based contractor, with occasional in-person testing at sports venues as required.

What You’ll Be Working On

You’ll be contributing to a production in-house Android application used internally by Hawk-Eye’s tracking and development teams.

Key areas include:

• Enhancing and modernising an existing Android application
• Improving performance, stability, and user experience
• Working directly with mobile camera pipelines using the Android Camera 2 API
• Integrating and running machine learning models on-device to support:
• Ball tracking
• Player tracking
• Optimising threading models, lifecycle management, and performance for real-time workloads
• Supporting hands-on testing in live sports environments, including occasional on-site testing at sports venues
• Collaborating closely with Tracking and Computer Vision teams to ensure clean system integration

Key Responsibilities

• Lead best practices for Android mobile development
• Design, develop, and maintain high-quality Kotlin-based Android applications
• Own complex features from design through to delivery
• Work closely with developers across Tracking, Tooling, and Computer Vision
• Support testing, debugging, and deployment of new features
• Participate in technical discussions and code reviews
• Contribute pragmatically in an agile, sprint-based environment

Tech Stack and Experience Requirements (Senior Level)

Essential:

• Strong, hands-on experience in Android development using Kotlin
• Deep understanding of Android application architecture, lifecycle, and threading
• Proven experience working with the Camera 2 API in production
• Experience building high-performance, real-time mobile applications primarily using Kotlin
• Solid understanding of software design principles and clean code practices
• Comfortable working independently and taking ownership as a contractor

Highly desirable:

• Experience running or integrating machine learning models on mobile devices
• Understanding of on-device performance optimisation for video or ML workloads
• Experience with mobile video capture or processing pipelines

Bonus skills:

• FFmpeg
• OpenCV
• Networking
• AWS
• iOS development

Engagement Details

• Contract role
• UK-based preferred
• Primarily remote, with occasional on-site testing at sports venues

Equal Opportunity Employer

Hawk-Eye Innovations, part of Sony Sports Businesses, is committed to creating a diverse and inclusive environment.

We engage contractors fairly based on skills, experience, and professional capability, and aim to create a respectful and inclusive working environment for all.