s
shahbazahmad808

Shahbaz Ahmad

@shahbazahmad808
4.0(2)

Senior React Native Engineer Production Mobile Apps for iOS Android

Pakistan
English, Urdu
About me
Senior React Native Developer with 5+ years of experience building scalable mobile apps for iOS and Android. I specialize in React Native, , Web3 apps, and API integrations. I deliver high-performance apps with clean architecture, and secure backend connectivity. Experienced with Firebase, REST APIs, and wallet integrations. From concept to deployment, I build reliable mobile products. ✅ Led a crypto wallet to 125K+ users and $2M+ on-chain volume Took crash-free sessions from single digits to 98%+ Built a smart-farming app used by 5,000+ farmers with offline-first sync... Read more

Skills

s
shahbazahmad808
Shahbaz Ahmad
Offline • 
Average response time: 1 hour

See my services

Cross-Platform Development
I will debug and fix react native app bugs and crashes fast
4.0(2)
Cross-Platform Development
I will build cross platform react native app for ios and android

Portfolio

Work experience

GreenAge_Services

Lead React Native Engineer

GreenAge Services • Full-time

Nov 2025 - Present10 mos

• Lead mobile engineer on a smart-farming platform serving 5,000+ farmers, with MOUs across agriculture companies and universities. • Shipped on the New Architecture (Fabric, TurboModules, Hermes) with MMKV cache, FlashList, and GraphQL offline-first sync for field workers without connectivity. • Built BLE sensor integration for soil probes (moisture, pH, nitrogen, potassium); wrote calibration logic to derive texture and salinity, plus a PDF pipeline for grower reports. • Implemented polygon drawing on Mapbox and Google Maps so farmers can outline plots and bind sensor data and crop cycles to each field boundary. • Own CI/CD on GitHub Actions and EAS, with OTA via CodePush, and full release management on both app stores.

Senior Mobile Application Engineer

BlockMob Labs • Full-time

Aug 2024 - Jan 20261 yr 5 mos

Built a non-custodial Web3 wallet app for Solana and Ethereum using React Native. Integrated multi-chain support with Solana and Ethereum networks Enabled wallet creation, private key encryption, and transaction signing on-device Integrated blockchain APIs, smart contract interactions, and Web3 libraries (ethers.js, solana/web3.js) Focused on security-first architecture and seamless user experience Delivered complete cross-platform (iOS/Android) production-ready app

Senior Mobile Application dev

Hegemonics.inc • Full-time

Apr 2022 - Dec 20242 yrs 8 mos

Experience with implementing push notifications and in-app purchases • Experience with using Expo for creating and publishing apps • Experience with implementing offline functionality and data synchronization. Design and implement pixel-perfect UI components using TypeScript, ensuring a seamless user experience across various devices and platforms. Develop and integrate social login features, enabling users to authenticate with popular social media platforms. Dynamically change app icons based on user preferences or app state, utilizing advanced graphics manipulation techniques. Implement in-app purchase functionality, ensuring secure and seamless transactions for users. Develop and integrate push notification systems, enabling the app to engage with users in a timely and relevant manner.

2 Reviews
4.0

(1)
(0)
(1)
(0)
(0)
Rating Breakdown
  • Seller communication level
    4
  • Recommend to a friend
    5
  • Service as described
    5
1-2 out of 2 Reviews
Sort By
Most relevant
    K
    image-docs

    komirica

    DK

    Denmark

    3

    he is okay

    $50-$100

    Price

    3 days

    Duration

    gig

    Cross-Platform Development

    Helpful?
    Yes
    No
    J

    just_gist

    CH

    Switzerland

    5

    Great seller with good communication and smart developer. I hope to work with you next time for opportunity to do much better. Thank you.

    $50

    Price

    4 days

    Duration

    gig

    Cross-Platform Development

    Helpful?
    Yes
    No