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Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Senior Mobile Engineer (React Native) - **Company:** Transreport Limited - **Location:** Greater London, UK - **Experience:** Expert - **Contract:** Permanent contract - **Skills:** Application Programming Interfaces (APIs), Android Software Development, App Store (IOS), User Authentication, Automation of Tests, Mobile Application Development, Profiling, Continuous Integration, Integrated Development Environments, Performance Tuning, Ruby on Rails, Data Streaming, TypeScript, ReactJS, Technical Debt, Backend, Enterprise Integration, React Native, Google Play, Api Management - **Published:** September 8, 2026 - **Apply:** https://www.collegerecruiter.com/job/2840619096-senior-mobile-engineer-react-native ## About the Role * 6+ years of mobile engineering experience. * Deep React Native and TypeScriptexpertiseacross architecture, testing, performance, and production delivery. * Strong judgement about when React Native needs native platform capabilities or modules. * Proven experience designing a greenfield system and shipping production iOS and Android applications. * Experienceestablishinga development environment and technical direction from scratch. * Comfortable explaining trade-offs between delivery speed, product needs, and maintainability. * Ability to manage ambiguity, own multiple verticals, and move between architecture and hands-on delivery. * Strong communicationskills, proactively surfacing delivery confidence, risks, dependencies, and technical debt. * Experience collaborating with Ruby on Rails or similar backend teams. * Experience in transport,logistics, or regulated industries. * Familiarity with mobile observability, performance profiling, testing, and app-store releases. * Experience working in B2B SaaS environments. * Exposure to native iOS and Android development. * 25 days holiday * Freeflu jab for you and your family We value * Clarity over bureaucracy Weoperatewith high autonomy and high accountability. People are expected to raise risks early, communicate clearly, and take responsibility for outcomes., * ScreeningCall (30 mins) * Technical Architecture Discussion -Greenfield React Native and backend integration deep dive * Final Culture Conversation- Leadership alignment ## Description As we scale internationally, this role will lead a new React Native application andestablisha scalable development environment across iOS, Android, and our backend platform., * Establish the greenfield architecture, testing, CI/CD, and release foundations for iOS and Android. * Agree scalable API contracts and an integration strategy with our Ruby on Rails engineers. * Build trust across Product, Design, and Engineering by surfacing timelines, risks, trade-offs, and technical debt early. Within 12 months, you will * Own the mobile roadmap across multiple product verticals, from technical design to production. * Build a maintainable cross-platform foundation for fast, sustainable delivery. * Introduce measurable improvements in mobile quality, stability, performance, and delivery velocity. * Shape long-term mobile/backend integration and keep technical debt visible and manageable., * Architect & Build - Define, own, and ship a greenfield React Native B2B application for iOS and Android. Set architectural standards that balance near-term delivery with long-term scalability. * Own Delivery - Own multiple workstreams in a small team, turning product goals into technical plans and carrying them through build, release, and iteration. * Design for the Long Term - Make pragmatic greenfield architecture decisions, balancing delivery speed with maintainability, scalability, accessibility, and technical debt. * Partner with Backend - Work with Ruby on Rails engineers to shape API contracts, data flows, authentication, observability, and a sustainable mobile/backend boundary. * Technical Leadership - Proactively communicate timelines, delivery confidence, dependencies, risks, and trade-offs, helping Product and Engineering make informed scope decisions. This high-autonomy role suits an engineer comfortable defining what to build, designing the system, and delivering it-not simply implementing prescribed solutions., * React Native (TypeScript) * React Navigation Backend & Delivery Context * Ruby on Rails APIs * iOS and Android app delivery * API contracts and mobile/backend integration * Automated testing and CI/CD * Mobile monitoring and performance optimisation * App Store and Google Play release practices * Security, accessibility, and maintainable engineering standards You are not expected to know every toolimmediately, but you must be comfortable owning architectural decisions across React Native and its backend integration. ## Related Videos - [Making the switch from web to mobile development](https://www.wearedevelopers.com/videos/274-making-the-switch-from-web-to-mobile-development) - [Profiling Symfony & PHP apps with Blackfire](https://www.wearedevelopers.com/videos/265-profiling-symfony-php-apps-with-blackfire) - [Watch Tests Go Brrrr! : Getting Started with Cypress in ReactJS](https://www.wearedevelopers.com/videos/282-watch-tests-go-brrrr-getting-started-with-cypress-in-reactjs) - [Developing the Backend with Stefan Lingler, CTO at Shpock](https://www.wearedevelopers.com/videos/100360-developing-the-backend-with-stefan-lingler-cto-at-shpock) - [Meet Your New BFF: Backend to Frontend without the Duct Tape](https://www.wearedevelopers.com/videos/682-meet-your-new-bff-backend-to-frontend-without-the-duct-tape) - [There's an app for that - on the role of cross platform development in the app development ecosystem](https://www.wearedevelopers.com/videos/278-there-s-an-app-for-that-on-the-role-of-cross-platform-development-in-the-app-development-ecosystem) ## Related Articles - [React Developer Salary [2023]](https://www.wearedevelopers.com/magazine/198-react-developer-salary-2023) - [16 Best Free React UI Libraries in 2025](https://www.wearedevelopers.com/magazine/148-16-best-free-react-ui-libraries-in-2025) - [Dev Digest 120 - Apple and peers](https://www.wearedevelopers.com/magazine/455-dev-digest-120-apple-and-peers) - [Fully Remote Software Engineer Jobs](https://www.wearedevelopers.com/magazine/447-fully-remote-software-engineer-jobs) - [Dev Digest 121 - AI goes offline](https://www.wearedevelopers.com/magazine/456-dev-digest-121-ai-goes-offline) - [Cross Platform Mobile Development Frameworks to Use in 2025](https://www.wearedevelopers.com/magazine/404-cross-platform-mobile-development-frameworks-to-use-in-2025)