Latest job information from Twine for the position of Freelance Application Developer – Fintech App Optimization. If the Freelance Application Developer – Fintech App Optimization vacancy in Singapore matches your qualifications, please submit your latest application or CV directly through the updated Jobkos job portal.
Please note that applying for a job may not always be easy, as new candidates must meet certain qualifications and requirements set by the company. We hope the career opportunity at Twine for the position of Freelance Application Developer – Fintech App Optimization below matches your qualifications.
Join an exciting fintech project focused on delivering a seamless mobile wallet experience for users and small businesses in Nigeria. This role centers on refining and optimizing a fully developed Flutter application in its final pre‑launch phase. You will play a key part in ensuring the app is production‑ready by addressing UI inconsistencies, debugging, and enhancing user flows, particularly onboarding. The ideal candidate will demonstrate a strong attention to detail, a passion for clean execution, and the ability to work efficiently under tight timelines. This is a targeted engagement to finalize and optimize the current implementation, with the potential for ongoing collaboration.
Deliverables
Refine and clean up UI components to ensure visual consistency across the app
Debug and resolve existing bugs affecting user experience and app stability
Optimize onboarding flows for clarity, speed, and ease of use
Enhance navigation and user journey throughout the application
Debug and improve API integrations for reliable data flow and performance
Conduct performance optimization to ensure smooth operation on a range of devices
Prepare the app for a seamless, production‑ready launch
Requirements
Proven experience developing and optimizing Flutter mobile applications
Strong skills in Dart and Flutter framework, with a portfolio of published apps
Demonstrated expertise in UI/UX best practices and mobile app debugging
Experience with API integration and troubleshooting in mobile environments
Ability to identify and resolve performance bottlenecks
Familiarity with fintech or payment platforms is a plus
Excellent attention to detail and commitment to delivering high‑quality work
Availability for immediate engagement and ability to work independently
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