React Native Mobile Engineer in St Albans

Mr Who? MrQ - we're an awesome, award winning online casino launched in 2018. We're big on tech, big on performance and most of all - big on fun. Over the years, we have experienced explosive growth - which means we need more rock stars to join our quest for total world domination. As we continue to scale, we’re looking for a Senior React Native Developer (L4) to help build and enhance our mobile platform. This is a hands‑on engineering role where you will contribute to the development of high‑quality mobile applications, solve meaningful technical challenges, and play an important role in delivering a seamless experience to our players. You’ll work as part of a collaborative team, contributing to technical decisions, improving code quality, and helping us scale our mobile applications effectively.

What You Will Do

• Develop and maintain cross‑platform mobile applications (iOS & Android) using React Native
• Contribute to the design and implementation of scalable, maintainable features
• Collaborate closely with product, design, and backend teams to deliver key user journeys (e.g. wallets, onboarding, gameplay flows)
• Write clean, well‑structured, and testable code following best practices
• Optimise application performance, responsiveness, and stability across devices
• Integrate with backend services and third‑party APIs
• Participate in code reviews and contribute to improving engineering standards
• Troubleshoot and debug production issues, ensuring timely resolution
• Contribute to improving development workflows, testing, and release processes
• Support and share knowledge with other engineers in the team

What We're Looking For

• 3–5+ years of professional mobile development experience, including React Native in production
• Strong proficiency in JavaScript (ES6+) and TypeScript
• Experience building and maintaining mobile applications with real users
• Good understanding of mobile performance, debugging, and optimisation techniques
• Experience integrating RESTful APIs and third‑party services
• Familiarity with state management solutions (Redux, MobX, or similar)
• Basic experience or exposure to native mobile development (Swift, Kotlin, etc.) is a plus
• Understanding of mobile UI/UX principles and responsive design
• Experience with app deployment processes (App Store / Google Play)
• Solid problem‑solving skills and ability to work independently within a team environment
• Good communication skills and ability to collaborate with cross‑functional teams

What We Offer

At MrQ, we take pride in providing an array of fantastic benefits to our valued team members. Enjoy a competitive salary package that recognizes your hard work and dedication. Need some extra time off? We’ve got you covered with additional leave days, and we believe in celebrating life’s special moments, including your birthday, with dedicated birthday leave. Family matters to us, too, which is why we offer a generous four‑week parental leave. Your well‑being is our priority, supported by international health and life insurance. Stay motivated with wellness incentives and seize opportunities for personal and professional growth with our growth allowance. Embrace a flexible working environment that caters to your needs, and join our friendly and multinational team, where collaboration and camaraderie flourish. At MrQ, we’re committed to ensuring that your experience with us goes beyond just a job – it’s a fulfilling journey with a supportive community. We are committed to fostering a workplace that values and celebrates diversity. We welcome individuals of all backgrounds and experiences, and we believe that a diverse and inclusive environment leads to innovation and success. We actively promote equal opportunities for all employees and strive to create a space where everyone’s voices are heard and respected. Join us in our journey to build a truly inclusive workplace where every person can thrive and contribute to our collective success.