Software Engineer Lead

Keerthi Panneerselvam

Lead Software Engineer - Mobile iOS

Summary

Results-driven Lead iOS Engineer with 8+ years of experience in designing, developing, and optimizing high-performance iOS applications. Proficient in Swift, Xcode, and modern iOS architectures, with expertise in performance tuning, memory management, and seamless backend integration. Skilled in leading teams, mentoring engineers, and implementing best practices to deliver scalable and user-centric applications. Strong problem-solving abilities and a passion for building intuitive, high-quality mobile experiences. Experience Summary

Fulltime PayPal India Private Limited, Chennai - Nov 2024 to Present. Fulltime Thales DIS, Singapore - May 2023 - August 2023 Fulltime PayPal India Private Limited, Bangalore - August 2019 to April 2023. Fulltime Checkpoint Systems Inc, Bangalore - July 2016 to August 2019. Education.

2017–2019 M.Tech Software Systems, BITS Pilani, WILP, CGPA– 8.98 %. 2012–2016 B.Tech IT, PSG College of Technology, Coimbatore, CGPA– 8.7 %. 2010–2012 XIIth, Srinivasa Vidhyalaya Higher Secondary School, Udumalpet, Marks– 95 %. Technical Skills

Languages Swift, Objective-C, Java, Kotlin

Frameworks UIKit, SwiftUI, Combine, CoreData, Apollo GraphQL Tools Xcode, Android Studio, Instruments, Fastlane Version

Control

Git, GitHub, GitLab, Bitbucket

Testing Unit Testing, UI Testing, XCTest, XCUITest, Mocking frameworks Architectures MVVM, VIPER, Clean Architecture

Networking REST, GraphQL

Other Memory Management, Performance Optimization, Dependency Injection, Code Reviews Awards

Checkpoint Best Innovator of the year 2018-2019

PayPal Spot Award for QRC Moonshot program 2020

PayPal Spot Award for getting the CVS feature 2020 H +91-999******* B ***************@*****.*** 15 December 1994 Experience

August 2023

- Present

PayPal - Lead Software Engineer - iOS

{ Leading the development of iOS applications with a focus on performance and scalability.

{ Architecting and implementing new features while ensuring seamless integration with backend services.

{ Mentoring junior engineers and driving best practices in iOS development.

{ Optimizing application performance, memory management, and responsiveness.

{ Collaborating cross-functionally with product, design, and backend teams to deliver high- quality solutions.

May 2023 -

August 2023

Thales DIS - Senior Software Engineer - iOS Developer

{ Worked on instrumenting the existing SDK

{ Migrated the code from Mercurial to Git

{ Got chance to learn about the CI/CD setup and its working

{ Found and fixed existing bugs..

{ Gave some inputs on changes in existing project architecture. August 2019

- April 2023

PayPal India Private Limited - Software Engineer 3 - iOS Developer Developed and optimized the QR Code payment system for seamless contactless transac- tions.

App Store: PayPal - Transfer Money & Mobile Pay

{ Designed and implemented QR Code module features: Scan, Show, and Get Paid.

{ Led application architecture, ensuring scalability and performance.

{ Developed UI components, user gesture handling, and data parsing.

{ Optimized memory management using ARC and Grand Central Dispatch.

{ Debugged, unit-tested, and ensured smooth Agile sprint deliveries.

{ Managed version control and documentation for framework usage. July 2016 -

August 2019

Checkpoint Systems Inc - OATMobile SDK

Developed OATMobile SDK, a comprehensive framework supporting RFID and EAS for inventory management on iOS and Android.

{ Designed and built core modules like Tag Decoder and Registration.

{ Led development of inventory management features using RFID.

{ Released multiple enterprise versions via Hockey App.

{ Implemented VIPER architecture and unit testing and Maintained i18n support for global users.

Acknowledgement

I, Keerthi Panneerselvam, do hereby confirm that the information given above is true to the best of my knowledge.

Place Chennai (Keerthi Panneerselvam.)

H +91-999******* B ***************@*****.*** 15 December 1994

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