Freelance Application Developer – Fintech App Optimization at Twine

Position Freelance Application Developer – Fintech App Optimization
Posted 11 Apr 2026
Expired 11 May 2026
Company Twine
Location Singapore | SG
Job Type Full Time

Job Description:

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
  • Strong communication skills and responsiveness

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Job Info:

  • Company: Twine
  • Position: Freelance Application Developer – Fintech App Optimization
  • Work Location: Singapore
  • Country: SG

How to Submit an Application:

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