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I am a senior iOS and mobile developer with over 13 years of experience delivering world-class mobile solutions for high-growth platforms across the Asia-Pacific region. I specialize in Swift, Objective-C, and Flutter, and have a proven track record scaling both B2B and B2C apps used by millions of users. I am passionate about clean architecture, intuitive UX, and building highly performant apps. I thrive in agile environments, enjoy mentoring engineers, and excel at collaborating with remote teams across time zones. I bring end-to-end product focus—from ideation through release cycles and monetization strategies—while keeping a strong user-first mindset.…I am a senior iOS and mobile developer with over 13 years of experience delivering world-class mobile solutions for high-growth platforms across the Asia-Pacific region. I specialize in Swift, Objective-C, and Flutter, and have a proven track record scaling both B2B and B2C apps used by millions of users. I am passionate about clean architecture, intuitive UX, and building highly performant apps. I thrive in agile environments, enjoy mentoring engineers, and excel at collaborating with remote teams across time zones. I bring end-to-end product focus—from ideation through release cycles and monetization strategies—while keeping a strong user-first mindset.

BAY ARBAATAR GONCHIGSUREN

App Developer, Front-End Developer, Web Developer, +2

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I am a senior iOS and mobile developer with over 13 years of experience delivering world-class mobile solutions for high-growth platforms across the Asia-Pacific region. I specialize in Swift, Objective-C, and Flutter, and have a proven track record scaling both B2B and B2C apps used by millions of users. I am passionate about clean architecture, intuitive UX, and building highly performant apps. I thrive in agile environments, enjoy mentoring engineers, and excel at collaborating with remote teams across time zones. I bring end-to-end product focus—from ideation through release cycles and monetization strategies—while keeping a strong user-first mindset.…I am a senior iOS and mobile developer with over 13 years of experience delivering world-class mobile solutions for high-growth platforms across the Asia-Pacific region. I specialize in Swift, Objective-C, and Flutter, and have a proven track record scaling both B2B and B2C apps used by millions of users. I am passionate about clean architecture, intuitive UX, and building highly performant apps. I thrive in agile environments, enjoy mentoring engineers, and excel at collaborating with remote teams across time zones. I bring end-to-end product focus—from ideation through release cycles and monetization strategies—while keeping a strong user-first mindset.

Available to hire

I am a senior iOS and mobile developer with over 13 years of experience delivering world-class mobile solutions for high-growth platforms across the Asia-Pacific region. I specialize in Swift, Objective-C, and Flutter, and have a proven track record scaling both B2B and B2C apps used by millions of users. I am passionate about clean architecture, intuitive UX, and building highly performant apps.

I thrive in agile environments, enjoy mentoring engineers, and excel at collaborating with remote teams across time zones. I bring end-to-end product focus—from ideation through release cycles and monetization strategies—while keeping a strong user-first mindset.

Skills

Experience Level

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Language

Mongolian

Fluent

English

Advanced

Work Experience

Senior Mobile Engineer at MEZORN LLC (UBCab – Mongolia’s #1 Uber - like Ride - Sharing App)

January 1, 2025 - October 14, 2025

Led iOS development for a ride-hailing app with 1.5M+ users and 80K+ drivers. Modernized UI from Storyboards to SwiftUI and SnapKit to improve velocity. Implemented Live Activities for real-time location and trip state updates. Managed App Store submissions, release cycles, and in-app monetization strategies.

Senior Mobile Engineer at MEZORN LLC (UBCab – Mongolia’s #1 Uber - like Ride - Sharing App)

January 1, 2025 - October 14, 2025

Led iOS development for a ride-hailing app with 1.5M+ users and 80K+ drivers. Collaborated with remote teams across multiple time zones. Modernized UI from Storyboards to SwiftUI and SnapKit, boosting development velocity. Implemented Live Activities for real-time driver location and trip state updates. Managed App Store submissions, release cycles, and in-app monetization strategies.

Senior Mobile Engineer at MEZORN LLC (UBCab – Mongolia’s #1 Uber - like Ride - Sharing App)

January 1, 2025 - October 14, 2025

Led iOS development team for ride-hailing app (1.5M+ users and 80K+ drivers). Collaborated effectively with remote teams across multiple timezones. Modernized UI from Storyboards to SwiftUI and SnapKit, improving development velocity. Implemented Live Activities for real-time driver location and trip state updates. Managed App Store submission, release cycles, and in-app monetization strategies.

Senior iOS Developer at DELIVO TECHNOLOGIES LLC (SongoMN - Mongolia’s #1 Food delivery App)

April 1, 2023 - October 14, 2025

Scaled app from 30K to 150K MAUs; ranked #1 in App Store (Food & Drink), 4.8/5 rating. Designed and delivered real-time tracking, loyalty, and payment features. Refactored networking logic and reduced Google Maps API cost by 95%.

Senior iOS Developer at DELIVO TECHNOLOGIES LLC (SongoMN - Mongolia’s #1 Food delivery App)

April 1, 2023 - October 14, 2025

Senior iOS Developer at DELIVO TECHNOLOGIES LLC ( SongoMN - Mongolia’s #1 Food delivery App )

April 1, 2023 - October 14, 2025

iOS Developer at UNIMEDIA SOLUTIONS LLC (Tokyo-based B2B Solutions Providers)

April 1, 2018 - October 14, 2025

Delivered enterprise solutions for global clients, including Yahoo Japan and Mitsubishi Corp. Built offline-first iOS app with 10K+ records and 200ms update time. Led performance optimization and UX improvements inspired by Apple Human Interface Guidelines.

iOS Developer at UNIMEDIA SOLUTIONS LLC (Tokyo - based B2B Solutions Providers)

April 1, 2018 - October 14, 2025

Delivered enterprise solutions for global clients, including Yahoo Japan and Mitsubishi Corp. Built offline-first iOS app with complex data syncing (10K+ records with 200ms update time). Led performance optimization and UX improvements inspired by Apple Human Interface Guidelines.

iOS Developer at UNIMEDIA SOLUTIONS LLC (Tokyo - based B2B Solutions Providers)

April 1, 2018 - October 14, 2025

iOS Developer at MEZORN LLC (Mobile app solution provider for government)

July 1, 2013 - October 14, 2025

Developed MyParliament iPad app featuring real-time voting and fingerprint authentication. Led a Groupon-like app with a custom keyboard, Pinterest UI, and location-based deals. Enhanced government apps (ezStat, bomStat, taxStat) with interactive charts and optimized performance.

iOS Developer at MEZORN LLC (Mobile app solution provider for government)

July 1, 2013 - October 14, 2025

Developed the MyParliament iPad app featuring real-time voting and fingerprint authentication. Led a Groupon-like app with a custom keyboard, Pinterest UI, and location-based deals. Enhanced government apps (ezStat, bomStat, taxStat) with interactive charts and optimized performance.

iOS Developer at MEZORN LLC (Mobile app solution provider for government)

July 1, 2013 - October 14, 2025

Developed the MyParliament iPad app featuring real-time voting and fingerprint authentication. Led a Groupon-like app with a custom keyboard, Pinterest UI, and location-based deals. Enhanced government apps ( ezStat, bomStat, taxStat ) with interactive charts and optimised performance.