Open to opportunities

Hammy Gillani

@hammygillani

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Senior mobile developer specializing in high-performance native and cross-platform iOS and Android apps.

United States

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What I'm looking for

I seek a challenging mobile engineering role where I can build secure, high-performance native and cross-platform apps, mentor teams, and drive product quality and growth.

I am a Senior Mobile Developer with 10+ years building high-quality iOS, Android, and cross-platform apps using Swift, Kotlin, Flutter, React Native, and Xamarin. I focus on delivering intuitive UI/UX, scalable architectures, and reliable performance while ensuring compliance and smooth app store deployments.

Throughout my career I have launched banking, health, and eCommerce applications that improved user engagement, retention, and stability—reducing crashes and optimizing load times. I integrate analytics, payment gateways, real-time sync, and push notifications while following CI/CD best practices.

I mentor teams, coordinate with design and backend partners, and champion testing and performance optimization to deliver production-grade apps that meet business and security requirements.

Experience

Work history, roles, and key accomplishments

Current

Senior Android/iOS Developer

Current

Ptolemay LLC

Feb 2023 - Present (3 years)

Designed and developed a secure mobile banking app for Android and iOS with biometric login, transaction history, and instant transfers; integrated Firebase Analytics and payment gateways to boost user engagement and optimized performance to reduce crashes and load times.

Flutter Swift Kotlin Payment Gateways Biometrics Performance Optimization CI CD API Integration

Lead Cross-Platform Mobile Developer

Snappii

May 2019 - Jan 2023 (3 years 8 months)

Led Flutter and React Native projects delivering high-rated apps with real-time notifications, in-app purchases, and secure authentication; optimized memory and performance and mentored junior developers to improve productivity and code quality.

Flutter React Native Cross Platform Development Performance Optimization In App Purchases Authentication Mentoring Agile

Mobile Application Developer

Lickability

Mar 2016 - Apr 2019 (3 years 1 month)

Built health monitoring apps integrated with wearable devices and IoT APIs, implemented analytics dashboards to track engagement and retention, and applied HIPAA-compliant data security and performance optimizations.

iOS Android Dashboards HIPAA API Integration Performance Optimization QA Testing

Junior Mobile Developer

ArcTouch

Jun 2015 - Feb 2016 (8 months)

Assisted in multi-platform app development using cross-platform frameworks and native SDKs, performed code reviews and unit testing, supported backend integration, and helped with App Store and Play Store deployments.