Nyein Ei Ei Tun

Contributed as part of an 8-member Scrum team developing the One Service App for the Singapore Ministry of National Development (MND). • Strengthened app security by implementing Data-at-Rest encryption and integrating third-party mobile security tools, reducing risk of data exposure and aligning with government-grade security compliance. • Delivered user stories in sprints while aligning with waterfall-style documentation and milestone reviews for regulatory approvals • Conducted code reviews, performed code refactoring for the buggy legacy, and maintained technical documentation for cross-team visibility • Mentored the junior developer by practicing the pair programming • Facilitated technical discussions among the team members and consulted the optimal solutions to the client • Ensured continuous compliance with Apple guidelines by managing App Store and Apple Developer requirements, including code-level and metadata updates • Resolved production issues by responding promptly to user inquiries via email, ensuring minimal downtime and maintaining client satisfaction Skills Learned: Swift, Objective-C, MVVM, Jenkins, Firebase, Scrum, JIRA, Cocoapods, Security Framework, Firebase Analytics and Firebase Crashlytics

Contributed to the development of new features for Crypt.com's main wallet app, Crypto Pay, PNL and other functionalities. • Applied RxSwift, MVVM, and Coordinator to build scalable, reactive UI components • Refactored the codebase using the VIPER architecture, significantly improving modularity, testability, and long-term maintainability • Wrote comprehensive unit tests to ensure reliability and minimize regression risks • Conducted code reviews and provided actionable feedback to maintain high code quality • Ensuring clear and accessible reference materials for the team and stakeholders. Documented architecture, design patterns, API documentation, and other relevant technical details. Skills Learned: Swift, RxSwift, Swift Package Manager, Cocoapods, MVVM, Coordinator, Circle CI, Firebase Crashlytics, VIPER, Scrum, JIRA, Confluence

Contributed to the development of new features for the UOB bank's Mighty app, ensuring seamless implementation and integration of functionalities. • Experienced in modular architecture • Took responsibility for delivering features in a timely manner by working with cross functional teams • Conducted code reviews, wrote unit tests Skills Learned: Swift, Jenkins, SonarQube, JIRA, Cocoapods, VIPER

Contributed to the development of HCS App for Haulio Pte Ltd to streamline operations for container drivers, reducing manual processes and helping them meet delivery deadlines more efficiently. • Refactored legacy code from MVC to MVVM and Coordinator patterns, improving scalability and maintainability • Implemented UI tests to reduce crashes and enable rapid test coverage during short development cycles • Delegated tasks and unblocked team members to maintain momentum and meet tight deadlines. Temporarily oversaw the Android development team in Myanmar after the Android lead's departure, coordinating delivery across platforms • Collaborated with cross-functional teams to deliver high-impact client- facing features • Conducted field research at Singapore ports, working directly with container drivers to understand real-world pain points and refine UX based on their feedback • Demonstrated early product thinking by aligning app features with user workflows and operational realities • Managed Apple Developer Enterprise Program enrollment and led successful App Store releases in line with Apple compliance standards Skills Learned: Swift, Jenkins, SonarQube, JIRA, Cocoapods, MVC, MVVM, Coordinator, UI tests

Demonstrated strong initiative and adaptability by diving into emerging technologies like AR and NFC, rapidly self-learning and delivering multiple working proof-of-concept (POC) projects during their early adoption phase. • Contributed to the development of the "Changi" App for Changi Airport, for implementing indoor map feature and revamping the new UI for the whole app. • Worked on the SMRT e-checklist app, using NFC technology to digitise operational workflows for Singapore's public transport provider • Collaborated closely with clients to gather feedback and align with their expectations and needs • Worked with third party SDK for the indoor map positioning. • Promoted to Senior iOS Developer within one year, effectively coordinating and managing an offshore team • Managed iOS certificates and provisioning profiles to ensure smooth and secure deployments for both enterprise and public releases Skills Learned: Swift, Objective-C, NFC, AR, MVC

Mobile Application Developer