About me

I’m Janarthanan Kannan, a passionate iOS Developer with over a decade of experience turning ideas into elegant, user-friendly mobile apps. Over the years, I’ve built and launched 15+ iOS & Android applications across fintech, e-commerce, automotive, and lifestyle domains — together reaching 100K+ downloads and even earning App Store features.

I specialize in Swift, SwiftUI, UIKit, and Core Data, Java & Kotlin, with a strong focus on clean architecture (MVC/MVVM) and performance optimization. I love solving complex problems, mentoring teams, and delivering apps that not only work flawlessly but also create delightful user experiences.

Beyond code, I believe in collaboration and continuous learning — qualities that have helped me grow from building my first iOS app to leading teams and guiding products from concept to launch.

When I’m not coding, you’ll often find me exploring new technologies, tinkering with side projects, or brainstorming the next big idea in mobile.

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What I'm Doing

  • mobile app icon

    Mobile apps

    Native iOS and Android app development using Swift, SwiftUI, Kotlin, and modern architectures.

  • design icon

    Web Design

    Responsive, accessible web interfaces built with modern front-end technologies and clean design principles.

  • web development icon

    Web Development

    Full-stack web applications with scalable backends, RESTful APIs, and e-commerce platforms using modern frameworks.

  • project management icon

    Technical Leadership

    Leading cross-functional teams, driving Agile delivery, mentoring developers, and aligning technical strategy with business goals.

Testimonials

  • Marc Vucovich

    Marc Vucovich

    Janarthanan is a highly skilled iOS developer with a keen eye for detail. His ability to translate complex requirements into seamless, user-friendly apps is outstanding. He consistently delivers high-quality code and ensures projects are completed on time. A true asset to any development team.

  • Mohan Subramaniam

    Mohan Subramaniam

    Working with Janarthanan has been an outstanding experience. He brings deep expertise in app and website development, with strong command over Swift, iOS frameworks, and modern web technologies. As a leader of a 20-member team, he consistently drives high performance by setting clear direction, mentoring developers, and ensuring quality delivery. Proactive and solutions-driven, he goes beyond expectations to enhance user experience while fostering a collaborative and dependable work environment.

  • Sharad Agarwal

    Sharad Agarwal

    Janarthanan excels as both an individual contributor and a team lead in mobile and web app development projects. He has successfully delivered end-to-end applications as a solo performer—taking them from concept to user deployment and providing ongoing support. As a team leader, he drives performance through clean architecture, optimization, and strong technical direction. His combination of technical expertise, creativity, and clear communication makes him a highly effective partner across cross-functional teams.

  • Naveen Kumar

    Naveen Kumar

    Janarthanan is not only a talented iOS engineer but also someone who deeply cares about the products he builds. His attention to UI/UX details and ability to anticipate user needs result in apps that feel polished and intuitive. I would strongly recommend him for any mobile development role.

Clients

  • Cognetik Labs logo
  • OJA logo
  • Citroen logo
  • Beezer Golf logo
  • New India Bazar logo
  • Q PaymentZ logo

Resume

Education

  1. Bachelor of Computer Science

    Jul 2008 — Jun 2011

    Yadava College,
    Madurai Kamraj University Board,
    Madurai, Tamil Nadu.

Experience

  1. Sr. iOS Developer | Cognetik Labs Inc, USA

    Jun 2024 — Present
    • Built reusable UI components improving user engagement by 25%.
    • Integrated third-party APIs to enhance functionality and performance.
    • Mentored junior developers and enforced clean coding practices.

  2. Lead Mobile Engineer | Doodleblue Innovations Pvt Ltd. Chennai, India.

    Aug 2021 — Jun 2024
    • Designed and implemented scalable e-commerce app architecture (Store2K).
    • Improved Agile delivery cycles, increasing team efficiency by 25%.
    • Enhanced app quality and reduced bugs via code reviews and CI/CD adoption.

  3. Tech Lead – iOS Apps | MAS Payments Inc. USA

    Nov 2018 — Jul 2021
    • Directed development of fintech apps; reduced deployment times by 20%.
    • Optimized app performance, improving load speeds and user satisfaction.
    • Led a 5-member iOS team, 2-member UI/UX team & 4-member Backend Development team, aligning product features with business goals.

  4. Lead Mobile Developer | Shaan Deals Intl. Dubai, UAE

    Nov 2017 — Oct 2018
    • Independently architected and delivered iOS & Android apps from concept to release.
    • Enhanced app security and UX with Core Data and advanced encryption.

  5. Sr. Mobile Developer | Cyber Gear LLC. Dubai, UAE

    Jan 2015 — Oct 2017
    • Built 10+ iOS & Android apps (fintech, lifestyle, e-commerce).
    • Delivered secure payment integrations, in-app chat, and WatchOS apps.

  6. iOS Developer | Amber System Technologies, California, USA

    Nov 2013 — Dec 2014
    • Developed and maintained iOS applications using Objective-C and Xcode.
    • Collaborated with cross-functional teams to define and ship new features.
    • Integrated RESTful APIs and optimized app performance for seamless user experiences.

  7. Mobile Application Developer | Sumtwo Software's Pvt Ltd. Madurai, India

    Sep 2012 — Nov 2013
    • Built native iOS applications from scratch, handling full development lifecycle.
    • Implemented Core Data for local storage and data persistence across apps.
    • Worked closely with designers to translate UI/UX wireframes into functional interfaces.

  8. Mobile Application Developer & Web Designer | MiPs Pvt Ltd. Madurai, India

    Dec 2011 — Aug 2012
    • Developed initial iOS apps and responsive websites as an early-career developer.
    • Designed and coded web pages using HTML, CSS, and JavaScript for client projects.
    • Gained foundational experience in mobile development and UI design principles.

My skills

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