Senior Frontend Engineer at UN1Q

Contributed to a greenfield healthcare/fitness mobile app from the ground up as the sole mobile developer, later onboarding and guiding an expanding team. Designed and implemented a local-first SQLite architecture to persist user health data, progress tracking, and backend calculation results across multiple relational tables. Built and owned a server-driven action system enabling the backend to trigger in-app behaviour dynamically at runtime. Configured Redux Toolkit from scratch (store setup, persistence, slice architecture) to manage complex app-wide state. Developed a shared component library and design token system (colors, styles, types) for a cross-product monorepo used across mobile and web. Set up Storybook for React Native with web compatibility and a CI/CD pipeline publishing builds to GitHub Pages. Participated in architectural discussions, made technical decisions with the team, and conducted code reviews to ensure quality and knowledge sharing.

Senior Frontend Engineer at Altamira

Worked on a risk assessment web platform for an energy-sector enterprise client. Built complex, data-heavy UI including multi-level forms with validation (Formik), dynamic tables with API integration, and long-polling for asynchronous backend calculations. Implemented navigation architecture and a foundational shared component library. Developed role-based access control to manage different user permission levels. Wrote tests and conducted code reviews to maintain code quality. Collaborated with React Query and PrimeReact, proposing and advocating for technical solutions. Also contributed to a mobile booking platform for schools and nurseries: stabilised and advanced the app toward beta MVP, configured OpenAPI code generation for typed API clients, resolved payment-related booking issues (TrueLayer), improved user flows, and supported code review and knowledge sharing.

Senior React Native Developer (Contract) at MasterDynamix

Built the Ready To Fight (RTF) app store/mobile experiences. Developed a fight analytics and forecasting module from scratch, including statistics visualisation and data-driven fight predictions behind a Pro subscription paywall. Implemented user account features covering prediction history, results tracking, and transaction records within a multi-chain crypto wallet platform. Contributed to UI/UX discussions, participated in code reviews, and maintained code quality. Worked within a complex Web3 product combining a boxing-focused social network, fight predictions, and crypto wallet functionality.

Senior React Native/React Developer at RollNCode

Maintained and evolved two React Native applications for iOS and Android: a peer support platform connecting users with agents via Sendbird-powered chat, and a podcast/video app featuring evangelical content. Built and maintained a hierarchical knowledge base with categorised articles and full-text search, including in-chat article linking between agents and users. Owned the full release cycle independently (App Store/Google Play submissions, versioning, and hotfixes). Developed and maintained the React web platform for agent and content management, covering frontend delivery and ongoing support. Collaborated with stakeholders to gather requirements and align on product priorities.

React Native Developer at Peppy

Developed and enhanced features for a healthcare and wellbeing platform within a mobile team. Implemented deep linking to route users to specific screens based on external triggers. Built a headless CMS integration, converting web markup into native React Native components. Extended and maintained Sendbird-powered real-time chat functionality. Created extensive UI across the app, translating designs into polished cross-platform components. Integrated Firebase services for push notifications and data management. Collaborated in an agile workflow with sprint planning and daily stand-ups.

WordPress & Frontend Developer at Ne1Creative

Freelance and contract frontend development and WordPress-based work (details not specified in the provided resume text).