IT & Software

Senior Mobile Developer

Mecca Brands

Letchworth · England · United Kingdom · (CPA)

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At MECCA, we’re reimagining how beauty and technology meet - and mobile is at the heart of this transformation. As a

Senior Mobile Developer

, you’ll play a pivotal role in delivering seamless, scalable, and delightful mobile experiences for our customers.

You’ll bring deep technical expertise in

React Native development

, along with a passion for

continuous improvement, experimentation, and collaboration

. This is more than just building features - you’ll help shape our mobile platform, optimize performance, and champion engineering quality while working closely with other mobile developers, product managers, designers, and backend teams. We’re looking for someone who thrives on complexity, embraces modern engineering practices, and never stops learning. Whether you’re profiling app performance, experimenting with new tools, or mentoring peers, you’ll be encouraged to

innovate, challenge assumptions, and grow

in a collaborative, fast-paced environment. As a Senior Mobile Developer, you will: Design, build, and maintain

high-performance mobile applications

using React Native, with strong knowledge of iOS (Swift) and Android (Kotlin) for bridging and optimisation. Ensure applications meet

scalability, performance, accessibility, and security

best practices. Collaborate closely with

Product Managers, UX/UI Designers, and QA Engineers

to translate ideas into seamless mobile experiences. Design and implement seamless integrations with backend systems and cloud services, leveraging REST APIs to deliver reliable, scalable, and performant mobile experiences Apply a

test-first mindset

, building automated tests (unit, integration, E2E) Continuously enhance the

CI/CD pipeline

, enabling fast, reliable, and low-risk releases. Optimise app performance through

profiling, debugging, and monitoring tools. Implement mobile security measures (OAuth, JWT, biometric authentication) and comply with privacy standards Participate actively in

code reviews, architecture discussions, and retrospectives

, shaping how we evolve as a team. Contribute to a

culture of learning and excellence

, sharing knowledge, mentoring peers, and staying current with mobile technology trends. We’re looking for a curious, growth-minded engineer with: 5+ years of mobile engineering experience

, with strong production experience in React Native. Production experience with

Expo

, including

Expo Modules, config plugins

, and

native app configuration

. Strong understanding of

iOS and Android native development,

including Swift, Kotlin, platform APIs, app permissions, push notifications, deep linking, and release workflows. Experience building and maintaining shared component libraries or design systems for mobile applications. Strong knowledge of mobile UI engineering, including

responsive layouts

,

animations

,

accessibility

, and

p

erformance optimisation

. Practical experience with

TanStack Query

for server-state management, caching, invalidation, and optimistic updates. Experience with

Zustand

or similar client-state libraries, with a clear understanding of when to separate client state from server state. Experience

writing automated tests

for mobile applications using tools such as

Detox, Maestro, Appium, Jest, or React Native Testing Library. Strong working knowledge of

CI/CD, Git workflows, feature flags, build automation, and continuous delivery

for mobile apps. Proven experience shipping apps to the App Store and Google Play

, including release management, store compliance, staged rollouts, monitoring, crash reporting, and post-release support. A strong

quality mindset

, with experience building

secure

,

resilient

,

observable

, and maintainable mobile applications. Clear communication skills, strong technical judgement, and the ability to mentor other engineers. Practical fluency with

AI-assisted engineering tools,

including

using AI to accelerate development,

testing, debugging, documentation, code review, and technical discovery while maintaining strong engineering standards. Nice to have Experience working with

.NET

or C#-based backends

and web technologies. Exposure to

AI/ML

concepts or libraries, or interest in experimenting with AI in real products Experience with observability tools (e.g., Datadog, New Relic, or similar) Experience working with an e-commerce platform Familiarity with

serverless

architecture or container-based deployment in AWS Understanding of

TDD

,

QA-as-code

, and

shift-left testing approaches Your Life At MECCA Whilst we are singularly focused on our #CustomerFirst mantra, we know that wouldn’t be possible without an incredible team that is guided by our MECCA values and motivated each and every day to be solutions focused, innovative, collaborative and adaptable, and have a bit of fun along the way! Some of our other team member benefits include: Professional development programs and first-class digitised learning offering Health and well-being initiatives Reward and recognition programs Access to bonus and incentive programs Quarterly product allowance Unlimited 40% discount There are also so many other ways in which you’ll be made to feel part of the MECCA story as we love to celebrate, surprise and delight our team along the way. To learn more about life at MECCA Brands, follow us on LinkedIn at MECCA Brands or @lifeatmecca and for all current opportunities, visit

Reference: WJCPA-5429_364673 · Posted 13 Nov 2026, 12:42 AM

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