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Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Senior Software Engineer - **Company:** RWS - **Location:** London, UK - **Experience:** Expert - **Salary:** £31,114.0 - **Contract:** Permanent contract - **Skills:** Flutter, Application Programming Interfaces (APIs), Android Software Development, IOS Applications, Applications Architecture, Application Services, App Store (IOS), Software Quality, Code Review, Software Debugging, Performance Tuning, Web Application Frameworks, ReactJS, Technical Debt, Backend, Material UI, Dart, Front End Software Development, Asynchronous Programming, Software Version Control, Web Api - **Published:** September 11, 2026 - **Apply:** https://www.adzuna.co.uk/jobs/details/5877356295 ## About the Role * Substantial commercial experience as a front-end or mobile engineer, with significant time spent building and shipping production Flutter applications. * Deep working knowledge of Flutter and Dart, including widgets, layouts, state management, navigation and asynchronous programming. * Strong understanding of front-end application architecture, API integration, responsive UI, accessibility and cross-platform delivery. * A track record of technical ownership: making architectural calls, standing behind them and being accountable for the outcome. * Experience mentoring or technically leading other engineers, whether formally or informally. * Experience working in a multi-disciplinary product or engineering team, across more than one app or shared codebase. * Experience integrating front-end applications with backend APIs, authentication, analytics and other application services. * Confident with agile delivery, version control, testing approaches and release processes for production applications. * Excellent debugging, problem-solving and code review skills, with the ability to explain technical choices clearly. * Confident collaboration skills, including communicating estimates, risks, trade-offs and recommendations. Nice to have * Some experience with the React framework, or another comparable web framework. * Experience with Flutter testing, CI/CD pipelines, app store or web release processes, and monitoring production issues. * Familiarity with design systems, reusable component libraries, accessibility standards or localisation and globalisation considerations. * Knowledge of native iOS or Android development, common state-management libraries or automated testing frameworks. ## Description You will play a key part in driving forward the development and progression of our three core applications, delivering new features, improving performance and maintaining a modern, scalable front-end experience. Alongside delivery, we are looking for someone who will help shape the technical direction of the Front End team, raise the bar on architecture and code quality, and bring the shared patterns across our applications closer together. By adding senior capability to the team we will be able to accelerate delivery, increase our responsiveness to product needs and ultimately improve overall client satisfaction across the portfolio., * Lead the design and delivery of Flutter front-end features across the three Obviously applications, from requirement through to release. * Write clean, maintainable and well-tested Dart and Flutter code, and set the standard that the rest of the team works to. * Own architectural decisions within the front-end estate, making sure they are documented, understood and applied consistently. * Translate product, design and client requirements into polished, responsive and accessible user experiences. * Maintain consistency across the three apps, including reusable components, shared patterns and reliable integration with services and APIs. * Support release readiness through debugging, testing, performance tuning, documentation and issue resolution. * Act as a senior voice in the Front End team, bringing considered opinions and constructive challenge. * Mentor and develop less experienced engineers through code review, pairing and knowledge sharing. * Raise the quality bar in code reviews and help the team reach pragmatic technical decisions. * Lead by example in estimation, planning, stand-ups, reviews and retrospectives. * Give and receive feedback openly, using reviews and retrospectives to improve ways of working. * Contribute to team documentation, reusable examples and onboarding material for new joiners. * Take ownership of your own development and stay current with Flutter, mobile and front-end engineering practice. * Work closely with product, QA, backend and client-facing colleagues to clarify requirements, manage dependencies and deliver agreed outcomes. * Understand the commercial impact of delivery choices, balancing speed, quality, maintainability and client priorities. * Provide realistic estimates and flag risks or blockers early, so that scope, cost and timelines can be managed effectively. * Identify and drive down technical debt and rework across the application estate, making the case for investment where it is needed. * Communicate technical choices, trade-offs and recommendations clearly to both technical and non-technical stakeholders. ## Related Videos - [Intro to Flutter Development](https://www.wearedevelopers.com/videos/170-intro-to-flutter-development) - [Dart - a language believed dead, experiences a new bloom](https://www.wearedevelopers.com/videos/442-dart-a-language-believed-dead-experiences-a-new-bloom) - [Developing the Backend with Stefan Lingler, CTO at Shpock](https://www.wearedevelopers.com/videos/100360-developing-the-backend-with-stefan-lingler-cto-at-shpock) - [Web APIs you might not know about](https://www.wearedevelopers.com/videos/281-web-apis-you-might-not-know-about) - [Flutter Packages and Plugins - A Look Under the Hood](https://www.wearedevelopers.com/videos/555-flutter-packages-and-plugins-a-look-under-the-hood) - [Writing truly cross plattform applications using flutter](https://www.wearedevelopers.com/videos/456-writing-truly-cross-plattform-applications-using-flutter) ## Related Articles - [Basic And Advanced Networking in Dart and Flutter](https://www.wearedevelopers.com/magazine/112-basic-and-advanced-networking-in-dart-and-flutter) - [Flutter Developer Salary [2023]](https://www.wearedevelopers.com/magazine/199-flutter-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) - [React Developer Salary [2023]](https://www.wearedevelopers.com/magazine/198-react-developer-salary-2023) - [Software Engineer Salary London](https://www.wearedevelopers.com/magazine/252-software-engineer-salary-london) - [Fully Remote Software Engineer Jobs](https://www.wearedevelopers.com/magazine/447-fully-remote-software-engineer-jobs)