Mobile Engineer (Flutter)

Mobile Engineer

Salary: up to £55k

Reporting to: Software Chief Technology Officer.

Location: Fully Remote (with occasional in-person meetings in Guildford).

Are you a Flutter expert with a passion for real-time media? We are looking for a Mobile Engineer to join our client's Software Engineering team. You will be responsible for designing, building, and maintaining high-quality mobile applications that serve as a core part of their real-time communications platform.

In this role, you will focus on delivering robust, performant applications that integrate deeply with WebRTC media streams and third-party SDKs to provide secure, low-latency experiences for mission-critical use cases.

Key Responsibilities

• Develop and maintain Flutter applications integrated with real-time audio/video services.
• Work closely with backend, infrastructure, and product teams.
• Manage SDK integrations and maintain mobile architecture.

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• Ensure application stability, high audio/video quality, and low latency under real-world conditions.
• Maintain code quality and adhere to industry best practices.

Technical Stack

You will regularly work with the following tools and technologies:

• Frameworks: Flutter/Dart.
• Media/Messaging: WebRTC, WebSockets, REST APIs, and Real-Time Messaging.
• Platforms: Android & iOS Platform Tooling (Android Studio, Xcode).
• DevOps: CI/CD for Mobile Builds and Flutter DevTools.

Essential Skills & Experience:

Please Note: Due to the nature of our client base—including Government and Police sectors—the successful candidate must be eligible for and able to obtain SC Clearance.

• A primary requirement for this clearance is a minimum of 5 years of continuous UK residency.
• A Bachelor’s degree in Computer Science, Engineering, or equivalent experience.
• Proven experience building production mobile applications using Flutter.
• Solid understanding of WebRTC, real-time media, and networking concepts.
• Experience integrating and maintaining third-party SDKs.
• Strong knowledge of mobile architecture and state management.
• Familiarity with Android and iOS platform constraints (permissions, lifecycle, background execution).
• Ability to debug complex issues across device, network, and application layers.

Desirable Extras:

• Experience with VoIP or conferencing platforms.
• Familiarity with event-driven architectures.
• Knowledge of mobile security and automated testing.
• Exposure to backend systems like Laravel or Node.js.