Enterprise mobile Android & iOS
FlowHCM
/01An enterprise HR app for employee self-service, attendance, approvals, and payroll on mobile.
Senior React Native developer (iOS & Android) · Karachi, Pakistan React Native
apps for iOS
and Android.
I’m Syed Shahbaz Hussain, a senior React Native developer in Karachi, Pakistan, with 7+ years of experience. I built and maintain the FlowHCM HR app for Android and iOS, and I publish my own apps on Google Play.
Full-time React Native roles · Remote or onsite
KARACHI, PAKISTANBUILDING MOBILE SINCE 2019
MY APPS ON GOOGLE PLAY
HYDROFAST AND COLORSNAP
React Native · Expoof any color.ColorSnap case study
MAIN TOOLSReact NativeTypeScriptReduxExpoFirebaseREST APIs
SELECTED WORKApps I’ve built
All 19 projects Apps I’ve built
and released.
Camera & color tools Android
ColorSnap
/02Find color names and codes from images or the camera, and save them in palettes.
On-device documents Android
PDF Tools
/03Create, merge, split, compress, and password-protect PDFs on Android.
Everyday tracking Android
HydroFast
/04Water tracking and fasting timers in one app, with reminders and progress charts.
I’m Syed Shahbaz Hussain, Associate Software Architect (React Native) at Impetus Systems in Karachi.
I built the FlowHCM mobile app from scratch and maintain its Android and iOS releases, including native features such as maps, biometrics, and push notifications. Outside work, I build smaller Android apps: color, PDF, and QR tools, an expiry reminder, habit trackers, and a game.
7+ yearsReact Native since 2019
Android + iOSEnterprise release experience
9 appsWith app store links
WHAT I DOWhat I bring
See my React Native experience What I bring
to a mobile team.
/01
App architecture and UI
React Native and Expo apps with clear navigation, consistent screens, and a structure the team can maintain.
/02
APIs, data, and native features
REST API integration, Redux and Zustand state, local storage, push notifications, maps, biometrics, and camera features.
/03
Releases and maintenance
Google Play and App Store releases, CI/CD, crash reporting, performance optimization, and ongoing updates.
FAQCommon questions
Common questions
from recruiters.
Short answers about my experience, location, and how to reach me.
Who is Syed Shahbaz Hussain?
I’m Syed Shahbaz Hussain, a senior React Native developer and mobile engineer based in Karachi, Pakistan. I build Android and iOS applications, including the FlowHCM mobile app at Impetus Systems, and I’m open to full-time React Native roles, remote or onsite.
How many years of React Native experience do you have?
More than 7 years. I’ve worked professionally with React Native since August 2019: first at Isekai Technologies, then at Impetus Systems from March 2020, where I built the FlowHCM mobile app from scratch and maintain its Android and iOS releases.
Which mobile apps have you built?
At Impetus Systems, I built the FlowHCM mobile app for Android and iOS. My independent Android apps on Google Play are ColorSnap, HydroFast, PDF Tools, ExpiryNotifier, QR Code All In One, Quit Smoking Tracker, Quit Sweet, and Tic Tac Toe. I use React Native and Expo, with native integrations where the product needs them.
What is your React Native tech stack?
TypeScript and JavaScript, Expo and EAS Build, React Navigation and Expo Router, Redux, Redux Toolkit, Zustand, and the Context API, REST APIs, Firebase (Authentication, Firestore, Cloud Messaging), SQLite, Reanimated, and Jest. I release through Google Play Console and App Store Connect.
Are you based in Karachi, Pakistan?
Yes. I am a senior React Native developer based in Karachi, Pakistan, interested in full-time remote or onsite roles. My notice period is 1 month. Onsite location preferences can be discussed during the hiring process.
Do you work with both Android and iOS?
Yes. My professional work includes FlowHCM on Android and iOS, including store release and maintenance. You can explore the independent Android apps through their Play Store links in this portfolio.
What can you bring to an existing mobile team?
Application architecture, performance optimization, code reviews and mentoring, API and native integrations, CI/CD and crash reporting, and Android and iOS releases. At Impetus Systems, I work in Agile/Scrum sprints with Jira, and I’m looking to bring that experience to a full-time mobile team.
Where can I see your work or download your resume?
The Work page includes product walkthroughs, screenshots, and links to app stores and companion websites. You can download my resume from the navigation or About page, and find my professional profiles through the footer.
FULL-TIME ROLESHiring a
CONTACT MEHiring a
React Native developer?
I’m open to full-time roles, remote or onsite.