Summary
Overview
Work History
Education
Skills
Activities And Awards
Timeline
Vasanth Rathna Kumar

Vasanth Rathna Kumar

iOS Developer - II
Toronto,ON

Summary

Skilled Senior iOS Developer with over 6 years of experience designing cutting-edge apps, consistently achieving top positions in download charts and driving revenue. Recognised for leveraging innovative development techniques to create trendsetting content. Adept at efficiently onboarding junior staff and fostering diversity by discovering untapped talent. Proficient in data structures and algorithms.

Overview

10
10
years of professional experience

Work History

iOS Engineer - II

Wayfair
04.2024 - Current
  • Developed and launched an AI-powered visual search system, increasing Global Revenue Streams (GRS) by $10 million through enhanced image-based discovery.
  • Engineered a modular dependency framework, reducing development time by 25% and improving code maintainability across multiple teams.
  • Designed and implemented a lazy navigation stack, optimizing memory usage and ensuring constant memory growth, even with deep navigation hierarchies.
  • Built an AI-driven discovery experience, leading to a $20 million increase in GRS by improving personalized recommendations and engagement.
  • Created a Pinterest-style staggered grid layout for AI-driven experiences, leveraging weighted randomization and mean distribution algorithms to optimize content visibility.

Senior IOS Engineer

Eos Positioning Systems Inc
06.2020 - 04.2024
  • Specialized in high-accuracy Bluetooth GPS and GNSS receivers at EOS, launching a GPS/GNSS iOS app with 250k+ downloads. Developed frameworks for clients, showcasing proficiency in Swift, UIKit, Foundation, CoreAnimation, and Auto Layout for optimal performance.
  • Pioneered Test Driven Development using frameworks like Quick and Nimble, ensuring reliable and efficient iOS app development with a focus on quality assurance.
  • Skillfully employed profiling/debugging tools such as Xcode Instruments and LLDB, resulting in a notable 20% improvement in app responsiveness and increased stability through effective memory leak resolution.
  • Proficiently utilized Cocoapods/Swift Package Manager, employed production monitoring tools (e.g., Crashlytics, Datadog), and applied solid concurrency best practices for optimized iOS app development.
  • Integrated BLE hardware (The Bridge) supporting Android Serial-Port-Profile Bluetooth sensors on iOS, capturing over 30% of Android GNSS mapping users to our iOS app and increasing company revenue.
  • Optimized app performance, reducing load times by 15%, and decreasing crash rates by 12% through code review and refactoring.
  • Guided Continuous Integration/Deployment Pipeline, pull requests, code reviews, load/stress testing, and unit/integration testing.
  • Mentored a team of junior developers, providing training and resulting in a 20% improvement in the team's overall productivity.
  • Architected and implemented a major app redesign, resulting in a 30% increase in user engagement and a 20% boost in daily active users.
  • Directed efforts to migrate a legacy Objective-C codebase to Swift, improving readability and maintainability while reducing technical debt.
  • Leveraged profound expertise with iOS frameworks, optimizing app performance and user experience in Core Data, Core Animation, Core Graphics, and Core Text.
  • Implemented robust coding practices with Swiftlint, Sourcery, Swinject, Swift 5, and XCTest, ensuring code quality and streamlined development.
  • Demonstrated proficiency in utilizing GraphQL APIs, resulting in efficient backend service integration and improved data retrieval. Achieved seamless implementation of In-App Purchases (IAP) and Subscriptions, enhancing revenue generation strategies.
  • Implemented effective Push Notification systems, improving real-time user engagement and retention rates.

IOS Engineer - Comcast NBC Universal

Photon Inc
06.2016 - 07.2017
  • Comcast, a global telecommunications conglomerate, witnessed my leadership in spearheading the development of Comcast Xfinity Mobile's iOS app. This included orchestrating millions of downloads and enhancing user experiences for Xfinity cameras.
  • As a vital member of the Camera Client Squad, I collaborated on shaping the Xfinity iOS app structure and streamlining its architecture.
  • In optimizing developer productivity at Comcast, I implemented UI features with proficiency in Swift and efficient time management.
  • To enhance video playback, I applied RESTful web services, MVVM, and architectural patterns, showcasing expertise in RESTful web services, MVVM, HTTP Protocol, and Caching Strategies.
  • In the Xfinity Mobile project, I integrated Combine and SwiftUI, boosting project efficiency and highlighting proficiency in Combine, SwiftUI, and effective time management.
  • My role extended to providing mentorship for a growth-oriented team environment, contributing to team development and effective time management.
  • I led software projects, maintained GitHub, and ensured robust CI/CD pipelines. My expertise included Jenkins, GitHub, Ansible, and effective time management.
  • Demonstrating technical leadership, I emphasized best practices, showcasing proficiency in Technical Leadership, Swift, MVVM, and OpenAPI Specifications.
  • Aligned with Comcast's commitment to excellence, I upheld code quality standards, showcasing expertise in effective time management, HTTP Protocol, and Caching Strategies.
  • Demonstrated a proven track record of shipping iOS apps on the App Store, emphasizing clean, SOLID code, and rapid deployment.
  • Proficiently achieved high-quality App Store metrics, including a 90% crash-free rate and over 4.5-star reviews.

IOS Engineer -Walgreens

Photon
06.2015 - 06.2016
  • Significantly contributed to developing 4+ iOS apps and frameworks at Walgreens, the second-largest U.S. pharmacy store chain, specializing in prescriptions and health products, accumulating a remarkable 300k+ downloads.
  • Integrated cutting-edge heart rate BLE monitor sensor and iWatch functionalities into the Walgreens app, impacting 100k+ users globally.
  • Orchestrated the launch of two iOS apps with 1000+ rewards, deals, and loyalty programs, reaching 50k+ downloads.
  • Collaborated closely with UX/UI designers to implement a redesigned interface, resulting in a notable 25% increase in user satisfaction.
  • Executed performance optimizations, achieving a 15% reduction in app load times and a 10% decrease in battery consumption.
  • Fostered seamless cross-functional collaboration, contributing to a 40% improvement in development life cycle efficiency.
  • Applied expertise in RESTful APIs for seamless iOS application integration with back-end services.
  • Implemented cloud message APIs and push notifications, enhancing real-time communication capabilities.
  • Stayed abreast of iOS community best practices and tools, ensuring continuous improvement in development methodologies.
  • Applied a strong understanding of MVVM architecture, Dependency Injections, and Protocol-oriented programming principles.
  • Contributed at an architect level, consistently delivering reusable components, maintaining code cleanliness, and ensuring meaningful unit tests.
  • Applied expertise in Swift structured concurrencies, async/await, CI/CD tools (GitHub Actions, Bitrise, Fastlane), and Unit Test writing.
  • Contributed to the development of multimodular iOS apps and utilized Swift Package Manager (SPM) for enhanced modularization.
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Education

Computer Application Development and Security - DS & Mathematics

Conestoga College, Canada
  • Percentage: 95.43
  • GPA: 4.00

Anna University Engineering College, India

Bachelor of Technology (B.Tech) in Information Technology.

Skills

  • Swift 5.5, Objective-C,Kotlin Multi-platform, Xcode,
  • UIKit, CocoaPods, Cocoa Touch, Core Graphics, Combine,
  • Swift Package Manager, GraphQL,REST, Fastlane,
  • RxSwift, RxCocoa, XCTest, XCUITest,
  • Test automation, MVVM architecture,
  • Cloud message APIs, Push notifications, GitHub actions, Crashlytics, Datadog,oreData, Swiftlint / Sourcery / Swinject, Auto Layout,
  • data structures, algorithms, design patterns, and problem-solving.

Activities And Awards

  • Scholarship issued for the last semester for achieving a 4.00 (95.43%) GPA in Conestoga College.
  • Awarded best performer of the year 2022 in Eos Positioning Systems Inc.

Timeline

iOS Engineer - II - Wayfair
04.2024 - Current
Senior IOS Engineer - Eos Positioning Systems Inc
06.2020 - 04.2024
IOS Engineer - Comcast NBC Universal - Photon Inc
06.2016 - 07.2017
IOS Engineer -Walgreens - Photon
06.2015 - 06.2016
Conestoga College - Computer Application Development and Security, DS & Mathematics
Anna University Engineering College - ,

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