Muzammil is available for hire
Hire MuzammilMuzammil Husnain
Verified Expert in Engineering
Software Developer
Dallas, TX, United States
Toptal member since May 30, 2023
Bio
Muzammil is a skilled and responsible developer who excels in crafting complex applications and brings a wealth of experience. His expertise spans diverse technical and business domains, honed over eight years. He values effective communication, organization, and collaboration and thrives in team environments. Muzammil embraces challenges and utilizes his creativity to discover innovative solutions and tackle challenges head-on.
Portfolio
Lucid Finance
Flutter, Coinbase API, Full-stack, Full-stack Development, Full-stack Design...
Zed Financial, Inc.
Kotlin, Android, Java, Jetpack Compose, API Integration, MVVM-C, SQLite, JUnit...
Freedompay
Android, Kotlin, Kotlin Flows, Kotlin Serialization, MVVM-C...
Experience
- Android - 8 years
- Java - 8 years
- Clean Architecture - 8 years
- Unit Testing - 8 years
- Git - 7 years
- Android Jetpack - 7 years
- Model View ViewModel (MVVM) - 7 years
- Kotlin - 6 years
Work Experience
Senior Flutter Developer
2026 - 2026
Lucid Finance
- Built and shipped an AI-powered personal finance iOS/Android app backed by Firebase Cloud Functions and Firestore, delivering Plaid bank sync, and a provider-agnostic AI layer.
- Engineered Plaid end-to-end: a webhook-triggered Sync v2 backfill (TDD, 102 tests), iOS/Android OAuth redirects, and a production-access compliance program with an automated field-access gate.
- Shipped a 4-tier subscription module across 11 Cloud Functions with Apple IAP, Stripe lifetime entitlements, Firestore-enforced access control, and a B2B employer seat-claim path.
- Hardened security with auto-lock, biometric/server-verified PIN, and a codebase audit that fixed a critical Firestore token-exposure flaw; ran RCAs and a Riverpod 3 migration for stability.
Technologies: Flutter, Coinbase API, Full-stack, Full-stack Development, Full-stack Design, Back-end Development, Back-end, Firebase, Firebase Cloud Functions, Firebase Cloud Messaging (FCM), Firebase Web SDK, Firebase Hosting, App Development, App Store, Mobile GPS, Swift, SwiftUI, CoreLocation, Location Services, Video Capture, GraphQL, Node.js, Communication, Screeners, Team Leadership, JavaScript, Interviewing, Team Management, Cross-platform, Cross-platform App Development, Native Mobile Apps, Retrieval-augmented Generation (RAG), Event Streaming, Live Chat, Notifications, Hilt, Coroutines, NestJS, Agile Software Development, Monorepos, Workflow Automation & System Integration, Consulting, Training, Vibe Coding, Spring, API Development
Senior Native Android Developer
2025 - 2026
Zed Financial, Inc.
- Led the end-to-end development of the Zed Card Android app, owning the architecture, implementation, and delivery of a fully functional fintech product from scratch.
- Established Compose-based UI foundations and MVVM-C navigation patterns to support rapid iteration and scalable feature development.
- Ensured a high-quality engineering foundation through modularization, documentation, and best-practice Android development workflows.
- Built and launched a modern Android banking app from scratch using Kotlin, Jetpack Compose, MVVM-C, and Room, delivering a scalable fintech experience for a 150,000+ waitlisted user base.
Technologies: Kotlin, Android, Java, Jetpack Compose, API Integration, MVVM-C, SQLite, JUnit, Espresso, Large-scale Projects, Online Payments, Consumer-facing Products, B2C, Concurrency, Performance Optimization, Fastlane, iOS, App Store Connect, CI/CD Pipelines, DevOps, Auth0, TypeScript, PostgreSQL, Next.js, Anthropic, OpenAI, Claude API, Claude Code, Financial UX, AI Design, AI Programming, Minimum Viable Product (MVP), AI Agents, Agentic RAG Systems, Code Review, IT Security, Platforms, System Design, Kubernetes, SaaS, Microservices Architecture, Microservices, Multi-tenant SaaS, Business Rules Engine, Compliance, Enterprise Integration Patterns (EIP), Regulated Industries, Multi-tenant Architecture, Agentic AI, Coding, Full-stack, Full-stack Development, Leadership, Role-based Access Control (RBAC), Solution Architecture, Multitenancy, App Development, App Store, Mobile GPS, Swift, SwiftUI, CoreLocation, Location Services, Video Capture, GraphQL, Node.js, Communication, Screeners, Team Leadership, JavaScript, Interviewing, Team Management, Cross-platform, Cross-platform App Development, Native Mobile Apps, Event Streaming, Live Chat, Notifications, Coroutines, NestJS, Agile Software Development, Monorepos, Workflow Automation & System Integration, Consulting, Spring, Legacy Code, API Development
Senior Android Engineer
2025 - 2025
Freedompay
- Designed and maintained modular Android SDKs and libraries (CX, Freeway, AFCC) used by thousands of merchants globally.
- Built internal SDKs for POS devices (Castles, Axium, Tetra, Toast), improving onboarding speed by 30% and device compatibility.
- Implemented secure payment workflows with encryption and tokenization, achieving full PCI compliance.
- Mentored Android engineers and defined SDK architecture standards, improving team velocity and code quality.
- Drove performance profiling and debugging, reducing transaction errors by 25% across merchant networks.
Technologies: Android, Kotlin, Kotlin Flows, Kotlin Serialization, MVVM-C, Model View Intent (MVI), Coroutines, Android Jetpack, Jetpack Compose, Jetpack Room, MockK, Offline Data Synchronization, Barcode Scanners, AI Automation, Kotlin Multiplatform, Kotlin Multiplatform Mobile (KMM), Large-scale Projects, Online Payments, Consumer-facing Products, B2C, Concurrency, Performance Optimization, Fastlane, iOS, App Store Connect, CI/CD Pipelines, DevOps, Auth0, TypeScript, PostgreSQL, Next.js, Financial UX, Minimum Viable Product (MVP), Agentic RAG Systems, Code Review, IT Security, Platforms, System Design, Kubernetes, SaaS, Microservices Architecture, Microservices, Multi-tenant SaaS, Business Rules Engine, Compliance, Enterprise Integration Patterns (EIP), Regulated Industries, Multi-tenant Architecture, Coding, Leadership, Role-based Access Control (RBAC), Solution Architecture, App Development, App Store, Mobile GPS, Swift, SwiftUI, CoreLocation, Location Services, Video Capture, GraphQL, Communication, Native Mobile Apps, Event Streaming, Live Chat, Notifications, Hilt, Agile Software Development, Monorepos, Workflow Automation & System Integration, Consulting
Android Team Lead
2023 - 2025
PNC
- Led a team of five engineers in migrating a multi-module legacy app to micro-app architecture using MVVM-C, Jetpack Compose, and clean architecture.
- Defined coding standards and architecture guidelines adopted across the Android team, improving maintainability and delivery speed.
- Delivered high-visibility features (card management, card-free ATM, control hub, help center, branch locator), enhancing self-service for millions of customers.
- Optimized CI/CD pipelines and modularization, reducing release cycles by 20%.
- Collaborated with product and architecture teams to translate business requirements into scalable mobile solutions.
Technologies: Accessibility, Android, Android SDK, AndroidX, Jetpack Compose, Model View ViewModel (MVVM), Kotlin, Java, RxJava, User Experience (UX), Reactive Programming, Android Studio, Gradle, UI Design, Pixel Perfect, Software Architecture, Early-stage Startups, Push Notifications, AOSP, USB, Embedded Systems, RESTFul APIs, Fintech, WebSockets, Android Performance Optimization, Android App Development, Google Play Store, MDM, MVVM-C, Continuous Integration (CI), GitLab CI/CD, RxKotlin, HIPAA Compliance, Technical Leadership, Offline Data Synchronization, Barcode Scanners, AI Automation, Kotlin Multiplatform, Kotlin Multiplatform Mobile (KMM), Large-scale Projects, Online Payments, Consumer-facing Products, B2C, Concurrency, Performance Optimization, Fastlane, iOS, App Store Connect, CI/CD Pipelines, DevOps, Auth0, TypeScript, PostgreSQL, Financial UX, Code Review, IT Security, Platforms, System Design, SaaS, Microservices Architecture, Microservices, Multi-tenant SaaS, Business Rules Engine, Compliance, Enterprise Integration Patterns (EIP), Regulated Industries, Multi-tenant Architecture, Coding, Leadership, Role-based Access Control (RBAC), Solution Architecture, App Development, App Store, Mobile GPS, SwiftUI, CoreLocation, Location Services, Video Capture, GraphQL, Communication, Screeners, Team Leadership, Interviewing, Team Management, Native Mobile Apps, Event Streaming, Live Chat, Notifications, Hilt, Coroutines, Agile Software Development, Monorepos, Consulting
Android/Kotlin Developer
2023 - 2024
The Weather Group - Main
- Developed and delivered new features across three OTT apps for Android mobile, tablet, Android TV, and Fire TV, enhancing user engagement and platform reach.
- Contributed to CI/CD pipeline setup using GitHub Actions for Local Now, Synergy, and HBCU GO, improving build automation and deployment efficiency.
- Tracked, prioritized, and resolved bugs and feature requests using Jira, ensuring timely delivery and high-quality releases.
Technologies: Android, Kotlin, Over-the-top Content (OTT), Android TV, Accessibility, Model View Intent (MVI), API Integration, User Experience (UX), Reactive Programming, Jetpack Room, Android Studio, Gradle, GitHub Actions, UI Design, Pixel Perfect, HTTP Live Streaming (HLS), Streaming, Software Architecture, Early-stage Startups, Push Notifications, AOSP, USB, Embedded Systems, RESTFul APIs, Fintech, WebSockets, Android Performance Optimization, Android App Development, Google Play Store, Android MDM, MDM, MVVM-C, Continuous Integration (CI), GitLab CI/CD, RxKotlin, HIPAA Compliance, Amazon Fire TV, Technical Leadership, ExoPlayer, MockK, Offline Data Synchronization, Barcode Scanners, AI Automation, Kotlin Multiplatform, Kotlin Multiplatform Mobile (KMM), Large-scale Projects, Consumer-facing Products, B2C, Concurrency, Performance Optimization, Fastlane, iOS, App Store Connect, CI/CD Pipelines, DevOps, Stripe, Auth0, TypeScript, PostgreSQL, Next.js, Twilio API, Dashboards, Minimum Viable Product (MVP), Code Review, Docker, IT Security, Platforms, System Design, Kubernetes, SaaS, Microservices Architecture, Microservices, Multi-tenant SaaS, Business Rules Engine, Compliance, Enterprise Integration Patterns (EIP), Regulated Industries, Multi-tenant Architecture, Coding, Full-stack, Full-stack Development, Leadership, Role-based Access Control (RBAC), Solution Architecture, App Development, App Store, Mobile GPS, Swift, SwiftUI, CoreLocation, Location Services, Video Capture, GraphQL, Node.js, Communication, Cross-platform, Cross-platform App Development, Native Mobile Apps, Event Streaming, Live Chat, Notifications, Real-time Streaming, Hilt, Coroutines, NestJS, React, Agile Software Development, Monorepos, Consulting
Senior Android Engineer
2022 - 2023
Nike
- Contributed to Nike’s global eCommerce app, optimizing cart, checkout, payments, and order history modules used by millions.
- Delivered international payment flows for the Korean market, enabling market expansion.
- Migrated legacy Java code to Kotlin, modernizing the codebase for testability and maintainability.
- Led cross-functional bug triage and PR review process, reducing backlog by 30% and improving code quality.
- Managed release coordination across distributed teams in three time zones, ensuring timely feature delivery.
Technologies: Android, Android SDK, Android Jetpack, Android Architecture Components, Gradle, Java, Kotlin, RxJava, Coroutines, Git, GitHub, CI/CD Pipelines, Jenkins, RoomDB, Agile Software Development, JSON/XML Schemas, Spring Dependency Injection (DI), Troubleshooting, Bug Fixes, Clean Architecture, Model View ViewModel (MVVM), Unit Testing, Mockito, Robolectric, Espresso, Agile Sprints, Retrofit, Design Patterns, Algorithms, Data Structures, Jira, SDKs, Apps, Mobile Development, Architecture, Material UI, Material Design, Android Material Design, Jetpack Compose, Mobile App Development, APIs, Camera API, Processing & Threading, Performance, Agile, Scrum, eCommerce, Android Development, Mobile, Xcode, User Interface (UI), Payment APIs, RTL, Internationalization, Localization, Camera2 API, Cloud Firestore, Google Pay, Amazon Web Services (AWS), Figma, Front-end, Testing, A/B Testing, Networking, TCP/IP, Multithreading, Mobile Apps, Mobile Applications, Accessibility, Model View Intent (MVI), API Integration, User Experience (UX), Reactive Programming, Jetpack Room, Android Studio, GitHub Actions, UI Design, Pixel Perfect, Software Architecture, Early-stage Startups, Push Notifications, AOSP, POS, Point of Sale, USB, Embedded Systems, RESTFul APIs, Fintech, WebSockets, Android Performance Optimization, Android App Development, Google Play Store, MDM, MVVM-C, Continuous Integration (CI), GitLab CI/CD, RxKotlin, HIPAA Compliance, MockK, Offline Data Synchronization, Barcode Scanners, Kotlin Multiplatform, Kotlin Multiplatform Mobile (KMM), Large-scale Projects, Online Payments, Consumer-facing Products, B2C, Concurrency, Performance Optimization, Fastlane, iOS, App Store Connect, DevOps, Stripe, Auth0, TypeScript, PostgreSQL, Financial UX, Code Review, IT Security, Platforms, System Design, SaaS, Microservices Architecture, Microservices, Multi-tenant SaaS, Business Rules Engine, Compliance, Enterprise Integration Patterns (EIP), Regulated Industries, Multi-tenant Architecture, Coding, Leadership, Role-based Access Control (RBAC), Solution Architecture, App Development, App Store, Mobile GPS, SwiftUI, CoreLocation, Location Services, Video Capture, GraphQL, Communication, Native Mobile Apps, Event Streaming, Live Chat, Notifications, Hilt, Consulting
Senior Android Developer | Team Lead
2018 - 2021
Convo
- Built and led a 7-member Android team for a global collaboration platform.
- Delivered high-impact features for H&M, driving thousands of new users and client satisfaction.
- Implemented Google Maps, geolocation, email workflows, and advanced chat.
- Architected and led implementation of the in-house solution for audio/video calls using WebRTC.
- Modernized legacy Java codebase to Kotlin and MVVM, improving performance, maintainability, and scalability.
- Streamlined CI/CD and Gradle builds, ensuring smooth production releases.
- Reduced app crashes and multithreading issues by 40% through code re-engineering.
Technologies: Android, Android SDK, Gradle, Dependency Injection, Agile Software Development, Clean Architecture, Model View ViewModel (MVVM), Unit Testing, Mockito, Robolectric, Espresso, Android Jetpack, Kotlin, Coroutines, RxJava, Dagger 2, REST APIs, XMPP, Socket.IO, Firebase, Firebase Cloud Messaging (FCM), GCM, CI/CD Pipelines, RoomDB, WorkManager API, Agile Sprints, Retrofit, Algorithms, Android Support Library, JSON/XML Schemas, LiveStream, Video Livestreaming, SDKs, Apps, Mobile Development, Google Maps API, Architecture, Dagger, SQLite, Material UI, Material Design, Android Material Design, Mobile App Development, APIs, Camera API, Processing & Threading, Performance, Agile, Scrum, Android Development, Mobile, User Interface (UI), RTL, Internationalization, Localization, Camera2 API, Cloud Firestore, Google Pay, Amazon Web Services (AWS), Voice Chat, Firebase Crashlytics, Figma, Front-end, Testing, A/B Testing, Networking, TCP/IP, Multithreading, Mobile Apps, Mobile Applications, Maps, Google Maps SDK, Google Maps, Accessibility, API Integration, User Experience (UX), Reactive Programming, Jetpack Room, Android Studio, GitHub Actions, UI Design, Pixel Perfect, HTTP Live Streaming (HLS), Streaming, Software Architecture, Early-stage Startups, Push Notifications, AOSP, USB, Embedded Systems, RESTFul APIs, Fintech, WebSockets, Android Performance Optimization, Android App Development, Google Play Store, Android MDM, MDM, MVVM-C, Continuous Integration (CI), GitLab CI/CD, RxKotlin, Technical Leadership, ExoPlayer, MockK, Offline Data Synchronization, Barcode Scanners, Kotlin Multiplatform, Kotlin Multiplatform Mobile (KMM), Large-scale Projects, Consumer-facing Products, B2C, Concurrency, Performance Optimization, Fastlane, iOS, App Store Connect, DevOps, Stripe, Auth0, TypeScript, PostgreSQL, Next.js, Twilio API, Dashboards, Minimum Viable Product (MVP), Code Review, Docker, IT Security, Platforms, System Design, Kubernetes, SaaS, Microservices Architecture, Microservices, Multi-tenant SaaS, Business Rules Engine, Compliance, Enterprise Integration Patterns (EIP), Regulated Industries, Multi-tenant Architecture, Coding, Leadership, Role-based Access Control (RBAC), Solution Architecture, Multitenancy, App Development, App Store, Mobile GPS, Swift, SwiftUI, CoreLocation, Location Services, Video Capture, GraphQL, Node.js, Communication, Screeners, Team Leadership, Interviewing, Team Management, Native Mobile Apps, Event Streaming, Live Chat, Notifications, Real-time Streaming, KOIN, Hilt, React, Monorepos, Consulting, API Development
Android Developer
2017 - 2018
Ideofuzion
- Led a team of 2 in integration with Fitbit, Garmin, Google Fit, and Samsung Health.
- Revamped the application on modular bases and wrote unit tests that increased the app's performance and stability.
- Developed scalable Android apps using Kotlin/Java, Room, REST APIs, and modern architectures.
Technologies: Android, Android SDK, Android Support Library, Google Fit, Samsung, Garmin API, Fitbit API, SQLite, REST APIs, Design Patterns, Algorithms, Data Structures, Agile Sprints, Unit Testing, Git, Bitbucket, JSON, XML, Dependency Injection, Android Volley API, Mockito, Robolectric, Espresso, Model View Presenter (MVP), Gradle, SDKs, Apps, Mobile Development, Architecture, Dagger, Mobile App Development, APIs, Processing & Threading, Performance, Agile, Scrum, Android Development, Mobile, User Interface (UI), RTL, Internationalization, Localization, Camera2 API, Cloud Firestore, Google Pay, JavaScript, Android Auto, Front-end, Testing, A/B Testing, CircleCI, Networking, TCP/IP, Multithreading, Mobile Apps, Mobile Applications, Maps, Google Maps SDK, Google Maps, Accessibility, API Integration, User Experience (UX), Jetpack Room, Android Studio, Apache Maven, UI Design, Pixel Perfect, Software Architecture, Early-stage Startups, Push Notifications, AOSP, USB, Embedded Systems, RESTFul APIs, Fintech, WebSockets, Android Performance Optimization, Android App Development, Google Play Store, MDM, MVVM-C, Continuous Integration (CI), GitLab CI/CD, RxKotlin, Technical Leadership, Offline Data Synchronization, Barcode Scanners, Large-scale Projects, Consumer-facing Products, B2C, Concurrency, Performance Optimization, iOS, App Store Connect, CI/CD Pipelines, DevOps, Stripe, Auth0, TypeScript, PostgreSQL, Next.js, Twilio API, Dashboards, Web Development, Code Review, IT Security, Platforms, System Design, Kubernetes, SaaS, Microservices Architecture, Microservices, Multi-tenant SaaS, Business Rules Engine, Enterprise Integration Patterns (EIP), Multi-tenant Architecture, Coding, Leadership, Role-based Access Control (RBAC), App Development, App Store, Mobile GPS, Swift, SwiftUI, CoreLocation, Location Services, Video Capture, GraphQL, Node.js, Communication, Native Mobile Apps, Event Streaming, Live Chat, Notifications, KOIN, Realm, Coroutines, React, Agile Software Development, Monorepos, Consulting, API Development
Android Developer
2015 - 2016
Nextin
- Developed a desktop app with a user-friendly dashboard to input designs and make configurational changes. The app integrated design inputs and configurations into a template project to generate a fully functional Android application.
- Worked on Android smartwatch faces and a companion app to apply watch faces on connected Android watches. Used Android smartwatch operating system and implemented REST APIs.
- Developed a white noise mindfulness application that provided multiple white noises and multiple features around it. Implemented caching using SQLite databases and REST API.
- Learned and implemented libGDX for a live wallpapers project.
Technologies: Android, Android Watch, Android TV, Git, Android Support Library, Android SDK, Ant Design, Gradle, Proguard, Android Studio, Eclipse, Java, JSON, XML, LibGDX, Troubleshooting, Bug Fixes, Design Patterns, Databases, Data Structures, Algorithms, Object-oriented Programming (OOP), SDKs, Apps, Mobile Development, Architecture, SQLite, Mobile App Development, APIs, Processing & Threading, Performance, Agile, Scrum, Android Development, Mobile, User Interface (UI), RTL, Internationalization, Localization, Google Pay, Android Auto, Front-end, Testing, A/B Testing, Networking, Multithreading, Mobile Apps, Mobile Applications, Maps, Google Maps SDK, Google Maps, Accessibility, API Integration, User Experience (UX), Apache Maven, UI Design, Pixel Perfect, Streaming, Software Architecture, Early-stage Startups, Push Notifications, AOSP, USB, Embedded Systems, RESTFul APIs, Fintech, WebSockets, Android Performance Optimization, Android App Development, Google Play Store, Android MDM, MDM, MVVM-C, Continuous Integration (CI), GitLab CI/CD, RxKotlin, Amazon Fire TV, Offline Data Synchronization, Barcode Scanners, Large-scale Projects, Consumer-facing Products, B2C, Concurrency, Performance Optimization, iOS, App Store Connect, DevOps, Stripe, Auth0, TypeScript, PostgreSQL, Next.js, Dashboards, Python, Web Development, Code Review, IT Security, Platforms, System Design, Kubernetes, SaaS, Microservices Architecture, Microservices, Multi-tenant SaaS, Business Rules Engine, Enterprise Integration Patterns (EIP), Coding, Leadership, Role-based Access Control (RBAC), App Development, App Store, Mobile GPS, Swift, SwiftUI, CoreLocation, Location Services, Video Capture, GraphQL, Node.js, Communication, Native Mobile Apps, Event Streaming, Live Chat, Notifications, Realm, Agile Software Development, Monorepos, Consulting, API Development
Project History
Nike Retail Application
https://play.google.com/store/apps/details?id=com.nike.omegaAn eCommerce Android application for Nike. I was a senior Android engineer working as a contractor at Nike. I handled the app's checkout experience, including cart, shipping, pick-up points, payments, self-checkout, and order history.
Convo | Collaboration Platform for Work
http://www.convo.comA work collaboration platform that goes beyond chat and messenger solutions, as it allows fast-moving teams to centrally share, organize, and archive information securely. In addition to quick chats, teams can easily share a project update, preview files, or leave clear feedback from anywhere and seamlessly merge associated attachments.
YAS | Einfach Gesünder Leben
https://play.google.com/store/apps/details?id=com.yaslife.appAn Android application for health and fitness. It connects with different health trackers like Fitbit and Garmin and with health apps like Google Fit and Samsung Health to monitor user activities and give rewards.
Quran App
An Android-based application for Quran readers. It had translations in 40 languages; users could take notes, save them, and search the Quran in their local language. It also allowed users to read the Quran, Surah by Surah, Ruku by Ruku, or Juz by Juz.
Calm Ambience
A white noise Android application that I developed for Nextin. It helps users select a combination of white noises and create their own Calm Ambience library. The app also featured a unique, beautiful interface.
WatchCraft
An Android companion app that I developed for Android smartwatches, which included several preloaded watch faces ready to apply. I also created multiple watch faces for Android watches. The companion app could also download additional watch faces from the Nextin internet library.
Paperscape | Live Wallpaper
An amazing live wallpaper app with paper graphics and smooth animations of different landscapes. It had 48 different scenes that would sync with time and weather information and reflect the data on the mobile screen.
APK Factory
A Java-based desktop application to automate the app generation process. The desktop app includes a configuration panel to take user and Android app design inputs in a specified format. Based on these inputs, the app then applies the changes on a template Android project to generate an Android TV application.
Education
2021 - 2023
Master's Degree in Data Science
Maharishi International University - Fairfield, Iowa, United States
2011 - 2015
Bachelor's Degree in Computer Science
Mohammad Ali Jinnah University - Islamabad, Pakistan
Skills
Libraries/APIs
REST APIs, Retrofit, Camera API, Camera2 API, Google Maps SDK, Google Maps, Jetpack Room, RxKotlin, MockK, Stripe, Stripe API, Twilio API, Claude API, Node.js, React, API Development, Android Support Library, WebRTC, Google Maps API, Proguard, Garmin API, Fitbit API, Android Volley API, RxJava, Socket.IO, GCM, WorkManager API, Android Architecture Components, RxJava 2, Retrofit 2, AndroidX, Kotlin Flows, Coinbase API, Firebase Web SDK
Tools
Git, Android Jetpack, Gradle, Android Studio, Jira, Apache Maven, GitLab CI/CD, Claude, ChatGPT, ExoPlayer, Fastlane, Auth0, Claude Code, CoreLocation, Figma, Android Auto, Bitbucket, Firebase Cloud Messaging (FCM), GitHub, Jenkins, Xcode, CircleCI
Languages
Kotlin, Java, JavaScript, Dart, TypeScript, Swift, GraphQL, Python, XML, Processing, HTML, CSS
Frameworks
Android SDK, Flutter, Next.js, Business Rules Engine, SwiftUI, KOIN, NestJS, Spring, Dagger, Ant Design, LibGDX, Mockito, Robolectric, Espresso, Dagger 2, Material UI, JUnit, Kotlin Serialization
Paradigms
Clean Architecture, Unit Testing, Design Patterns, Agile Software Development, Model View ViewModel (MVVM), Mobile Development, Agile, Scrum, Testing, Reactive Programming, UI Design, Continuous Integration (CI), HIPAA Compliance, B2C, DevOps, Microservices Architecture, Microservices, Role-based Access Control (RBAC), App Development, Cross-platform, Model View Presenter (MVP), Model View Intent (MVI), Object-oriented Programming (OOP), Dependency Injection, Android Material Design, Kanban, MVC Design
Platforms
Android, Mobile, Amazon Web Services (AWS), iOS, Docker, Kubernetes, Firebase, Android TV, Android Watch, Eclipse, NetBeans
Storage
PostgreSQL, Realm, Cloud Firestore, JSON, Databases, SQLite, RoomDB, JSON/XML Schemas
Other
Agile Sprints, Coroutines, CI/CD Pipelines, Android Architecture, SDKs, Apps, Architecture, Mobile App Development, APIs, Processing & Threading, Performance, Minimum Viable Product (MVP), Android Development, User Interface (UI), RTL, Internationalization, Localization, Google Pay, Front-end, A/B Testing, Networking, TCP/IP, Multithreading, Mobile Apps, Mobile Applications, Maps, Accessibility, API Integration, User Experience (UX), Pixel Perfect, Software Architecture, Early-stage Startups, Push Notifications, AOSP, POS, Point of Sale, USB, Embedded Systems, RESTFul APIs, Fintech, WebSockets, Android Performance Optimization, Android App Development, Google Play Store, MVVM-C, Artificial Intelligence (AI), Cursor AI, Chatbots, Large Language Models (LLMs), Amazon Fire TV, Technical Leadership, Offline Data Synchronization, Barcode Scanners, AI Automation, Kotlin Multiplatform, Kotlin Multiplatform Mobile (KMM), Large-scale Projects, Online Payments, Consumer-facing Products, Concurrency, Performance Optimization, App Store Connect, Anthropic, OpenAI, Dashboards, Web Development, Financial UX, AI Design, AI Programming, AI Agents, AI Copilots, Agentic RAG Systems, Code Review, IT Security, Platforms, System Design, SaaS, Multi-tenant SaaS, Compliance, Enterprise Integration Patterns (EIP), Regulated Industries, Multi-tenant Architecture, Agentic AI, Coding, Full-stack, Full-stack Development, Leadership, Solution Architecture, App Store, Mobile GPS, Location Services, Video Capture, Communication, Screeners, Team Leadership, Interviewing, Team Management, Cross-platform App Development, Native Mobile Apps, Retrieval-augmented Generation (RAG), Event Streaming, Live Chat, Notifications, Real-time Streaming, Hilt, Monorepos, Workflow Automation & System Integration, Consulting, Vibe Coding, Legacy Code, LiveStream, Video Livestreaming, Jetpack Compose, eCommerce, Payment APIs, Voice Chat, Firebase Crashlytics, GitHub Actions, HTTP Live Streaming (HLS), Streaming, Back-end Development, Android MDM, MDM, Multitenancy, Training, Algorithms, Data Structures, Big Data, Machine Learning, Troubleshooting, Bug Fixes, Google Fit, Samsung, XMPP, Spring Dependency Injection (DI), Material Design, Room, Over-the-top Content (OTT), Firebase Cloud Functions, Full-stack Design, Back-end, Firebase Hosting
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