Senior Flutter Developer – Web Application

You’ll take an existing Flutter application and rebuild it into a polished, production-ready desktop web experience – owning the codebase end-to-end, implementing new authentication logic, and delivering something you’ll be genuinely proud to ship. Roles & Responsibilities Rebuild and adapt an existing Flutter web application to match approved desktop designs – replacing a mobile-oriented layout with a proper, high-quality browser experience.Implement responsive and adaptive layouts using LayoutBuilder, MediaQuery, breakpoints, and adaptive widgets – optimized for mouse and keyboard interaction across desktop, tablet, and varying browser window sizes. Build and implement a delegate-access authentication model – allowing an assistant user to access and manage the application on behalf of multiple accounts with appropriate permissions and account-switching. Integrate and validate the Microsoft Dataverse Web API in a browser context – including Microsoft Entra ID (Azure AD) OAuth flows, browser-based redirects, CORS handling, and secure token storage. Audit existing third-party packages and plugins for web compatibility, replacing or re-implementing anything that is mobile-only. Ensure cross-browser compatibility and solid performance across Chrome, Edge, Safari, and Firefox. Collaborate with the Product Manager and QA through testing, UAT, and release – keeping communication clear and delivery on track. Job Requirements 5+ years of professional software development experience with strong, demonstrable Flutter/Dart expertise – and a portfolio that proves it. Proven experience building or shipping Flutter web applications – not just mobile. Strong responsive and adaptive UI skills in Flutter – you know how to build layouts that behave correctly across screen sizes and browser windows. Solid Flutter architecture and state management experience – BLoC, Riverpod, or Provider – with clean separation of business logic from UI. Experience integrating REST/OData APIs, ideally Microsoft Dataverse, Dynamics 365, or the Power Platform. Hands-on experience with OAuth 2.0 and Microsoft Entra ID (Azure AD) authentication in a web context – redirects, CORS, token management, and secure storage. Experience implementing role-based access, delegated permissions, or multi-account switching features. Familiarity with deploying and hosting Flutter web builds, strong Git discipline, and clear written communication.

Nice to have

• Flutter web performance optimization, experience in legal or compliance-sensitive environments, familiarity with WCAG accessibility standards, or CI/CD pipeline experience for Flutter web.