Full Stack Engineer

Senior Full Stack Software Engineer (React Native / AWS)

£80,000 - £95,000 + Bonus & Benefits

Hybrid - London

We're partnered with a high-growth health and fitness technology company on a mission to help people train smarter through personalised performance platforms. Following an internal promotion within the engineering team, they're now looking for a Senior Full Stack Software Engineer to join a small, agile squad building next-generation digital coaching tools.

The Role

You'll be working in a cross-functional engineering team responsible for designing and scaling the core systems behind their adaptive training experience, from mobile applications to intelligent backend services.

This role will see you own end-to-end feature delivery: collaborating on architecture, writing clean and maintainable code, and driving forward new ideas that improve how users train, perform, and progress.

The first month will focus on onboarding, learning the product, and embedding with the team, from there, you'll take ownership of critical new features and shape the evolution of their tech platform.

Tech Stack & Skills

• Deep hands-on experience with React Native (minimum 2 years recent commercial experience)
• Strong understanding of AWS and scalable cloud infrastructure
• Solid skills in TypeScript and modern JavaScript frameworks
• Experience building and shipping products end-to-end (ideation > delivery)
• Interest in or exposure to AI / Machine Learning is a plus (you'll be working alongside teams exploring adaptive algorithms)

What They're Looking For

• A Senior Engineer (typically 5+ years' experience) confident working in modern full stack environments
• A self-starter who thrives in fast-paced, product-driven teams
• Someone who enjoys solving complex technical challenges with simple, elegant solutions
• A collaborator who values impact, quality, and shipping great work over process-heavy environments

The Process

• Initial video call (45 mins) with a member of the engineering team - part conversational, part short coding exercise (LeetCode-style)
• Take-home task (2-3 hours, realistic and reflective of day-to-day work)
• Final video interview with two engineers
• Office visit to meet the wider team

Why Join?

• Be part of a mission-driven company making a genuine difference in people's lives
• Work in a lean, high-impact engineering culture that values autonomy and creativity
• Opportunities to explore ML/AI projects and modern AWS-native systems
• Competitive salary, strong benefits, and hybrid working flexibility

Interested?

Apply now or reach out directly to discuss the role in confidence.