Job Description

We're currently looking for a

Senior App Developer (React Native / BLE)

to join our client in a hybrid role based in London.

This is a fantastic opportunity for an experienced mobile engineer passionate about building high-performance applications to play a key role in shaping secure and scalable solutions that redefine online trust. You'll work in a collaborative environment, developing innovative features that combine mobile app excellence with Bluetooth Low Energy (BLE) integrations.

Responsibilities:

Building and refining app features in React Native. Troubleshooting BLE connectivity and performance issues. Working with designers to bring new UI/UX ideas to life. Planning sprints and breaking down requirements into deliverables. Coordinating with hardware and firmware teams on feature integrations. Reviewing code and setting coding standards for future hires. Testing, releasing, and monitoring app updates.

Requirements:

6+ years of professional mobile development experience, including at least 3 years with React Native. Proven experience with Bluetooth Low Energy (BLE) integrations. Strong understanding of mobile app architecture and cross-platform performance optimisation. Experience deploying apps to both the App Store and Google Play. Solid grasp of software development best practices, version control, and testing. Comfortable in a fast-paced, lean startup environment. Excellent communication skills and ability to work cross-functionally.

Preferred (Nice to Have):

Experience with electronics or embedded devices. Knowledge of telemetry data collection and analysis. Familiarity with social media sharing integrations. Startup or small team experience where you've owned a product end-to-end. Experience with Firebase, AWS, or other backend services.

What We Offer:

Competitive salary + equity options. Flexible hybrid working (typically 3 days office, 2 remote - negotiable). Standard pension scheme. Company shutdown during Christmas. Cycle to work scheme. Workplace nursery scheme. Bi-weekly "Lunch & Learn" sessions. A relaxed, flexible work environment with a passionate, supportive team.
Job Types: Full-time, Permanent

Pay: 70,000.00-90,000.00 per year