Senthilnathan Ayyadurai

Mobile Technical Lead with extensive experience at PayPal, specializing in iOS and Android development. Demonstrated success in enhancing user experience through innovative solutions and strong team collaboration. Proficient in Swift and Git, consistently delivering high-quality software that adheres to strict security standards. Committed to driving product improvements and maximizing user satisfaction.

Member of Technical Staff - 1
Feb 2023 – Present

• Implemented multiple authentication methods including password, OTP, passkey, biometric, and LLS, significantly improving login success rates.
• Enabled shared authentication for seamless integration between consumer and business applications.
• Contributed to system architecture design, ensuring scalable and secure solutions.
• Mentored junior developers, promoting best practices and enhancing team productivity.

iOS Architect / Lead / Developer
Sep 2017 – Feb 2023

• Contributed to key PayPal projects such as Venice, Hyperwallet, TMIS, and Media Intelligence.
• Developed Citi credit services (home tiles) for Australian users using Xcode, JSON, and Jenkins CI.
• Architected and led development of the Hyperwallet App and SDKs, achieving 98% unit test coverage with TDD and CI/CD (Travis, Coveralls).
• Delivered reporting dashboards (TMIS) and media analytics tools (Media Intelligence).
• Led client interactions, performed code reviews, and mentored teams.
• Tools: Xcode, Git, JIRA, XCTest, Amplitude, Instruments, REST APIs.

iOS Lead – Various Projects
2016 – 2017

• Architected and developed enterprise apps like SCoRE and IvyCPG for field sales, merchandising, and performance tracking.
• Led iOS teams, created custom UI components, and optimized app performance.
• Ensured high code quality through rigorous review and testing.
• Tools: Xcode, Storyboards, CoreData, SVN, JSON, REST APIs, SQLite, XCTest, iPad Apps.

Technical Lead
2015 – 2016

• Delivered multiple retail and utility apps including Flexi Leasing, TrackChores, Flexi Funds, Flexi Catalog, and SunWize.
• Managed end-to-end development lifecycle from SRS to unit testing.
• Built apps for loan processing, task management, and catalog viewing.
• Tools: Xcode, Storyboards, JSON, REST APIs, Universal Apps, SQLite.

Specialist
2014

• Developed Vidyo for Facebook, a video conferencing app with social integration and room control features.
• Integrated Vidyo static library to deliver a robust iOS conferencing solution.

Team Lead / Senior Software Engineer
2005 – 2013

• Led development of educational and healthcare apps: Mobl21, QuickStudy, ICD-10 Doc Guide, ArticFun, and Vodka 773.
• Built award-winning Mobl21 mobile learning platform with SCORM/AICC compliance.
• Developed iOS flashcard tools with advanced UX and content sync features.
• Tools: Objective-C, SQLite, XML, Instruments, Interface Builder, Whizible.

Programmer
2005

• Built Easy Serve Restaurant (ESR) on Pocket PC to manage orders and generate operational reports, streamlining restaurant workflows.