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.

What i'm doing

  • mobile app icon

    Mobile apps

    Professional development of applications for iOS and Android.

  • design icon

    Web design

    The most modern and high-quality design made at a professional level.

Testimonials

  • Daniel lewis

    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.

  • Jessica miller

    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.

  • Emily evans

    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.

  • Henry william

    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.

Daniel lewis
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Daniel lewis

Clients

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.

My skills

    Portfolio

      Blog

      Contact

      Contact Form