Sardar Hussain

Sardar Hussain

Rawalpindi/Islamabad, Pakistan

Crafting Production-GradeReact Native Experiences.

Mobile App EngineerTV SystemsFull-Stack Builder

React Native developer at Repla Technologies with ~2 years of experience shipping production mobile apps. Building high-framerate, production-grade experiences — from ride-hailing and telehealth to IPTV and full-stack platforms.

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~2+ yrs

Production Experience

6+

Shipped Production Apps

60 FPS

Gesture Fluidity

1 Solo

Full-Stack Platform

Sardar Hussain

Sardar Hussain

React Native Developer

Virtual University (CS)Repla Technologies
THE DEVELOPER

Building apps that feel native, responsive, and relentless.

I am a Mobile App Engineer specializing in high-performance React Native applications, Smart TV media platforms (Roku BrightScript & LG webOS), and end-to-end full-stack architectures.

From sub-second live GPS vehicle polylines on Mapbox to low-latency HLS streaming pipelines and Stripe payment sheets, my code focuses on deterministic frame rates, zero memory leaks, and seamless native integration.

60 FPS Native Performance

Reanimated 3 & gesture-handler architectures tuned for buttery 60fps.

Low-Latency Media

HLS live and VoD video pipelines with hardware acceleration & MMKV cache.

Full-Stack Autonomy

Solo platform builds with Node.js, PostgreSQL, Socket.IO, and React admin desks.

Smart TV Mastery

Production Roku BrightScript channels & LG webOS IPTV applications.

Selected work

Shipped work,on stage

Production systems, one at a time. Pick a row and that build takes the stage.

01 — Solo full-stack architect

ApnaUstad

Production · Solo Full-Stack

Home services marketplace connecting clients with skilled professionals, built & shipped alone.

  • Dual-role navigation (Client & Worker) in one codebase
  • Live GPS tracking over Socket.IO during active jobs
  • Full web admin portal for disputes & escrow revenue

React Native · Node.js · PostgreSQL · Sequelize · Socket.IO · React.js · Expo Push · Resend

Client home · Worker home · Choose a role

The rest of the set

Architecture

Engineering skillsand technical stack

Seven tiers, from the native gesture thread to the store release. Open a chapter to read how that part of the stack ships.

01

Mobile Runtime

High-Framerate 60 FPS Gesture Threading

< 16ms Frame Budget · 60 FPS

Native UI & High-Speed Gesture Pipeline

Offloads complex touch drag-to-dismiss sheets, physics springs, and reactive animations directly onto the native UI thread, keeping the JavaScript bridge completely unblocked.

  • Sub-millisecond synchronous storage via MMKV C++ JSI bindings
  • Declarative Worklets & gesture handlers via React Native Reanimated
  • Deep type-safe modular navigation graphs with state persistence
  • Zustand & Redux Toolkit slices with zero redundant re-renders
  • React Native
  • Expo SDK 52+
  • TypeScript
  • Reanimated
  • MMKV
  • React Navigation
  • Redux Toolkit
  • Zustand

In productionApnaUstadAyy RideMashrab-e-HamdaniaVena AI

CAREER TRAJECTORY & IMPACT

Work Experience &Shipped Engagements

From solo greenfield product architecture to core mobile engineering at Repla Technologies.

01 / 05

React Native Developer

@Repla Technologies
5 Production Apps Shipped
Aug 2024 — Present
// Core Engineering LeadRawalpindi, PK

Key Engineering Responsibilities & Impact

Delivered high-reliability mobile architecture, cross-platform UI, and systems integration.

Shipped 5 commercial mobile applications to production across ride-hailing, IoT lockers, smart TVs, and telehealth.
Engineered high-performance Mapbox GL navigation on Ayy Ride, replacing Google Maps with live polylines, sub-second driver location streams, and real-time fare calculation.
Integrated native Stripe PaymentSheet with Apple Pay & Google Pay and end-to-end background Expo Push tokens stored in PostgreSQL.
Constructed automated EAS cloud build pipelines, configuring strict ProGuard / R8 keep rules to eliminate runtime crashes on Expo module reflection classes.
Shipped Commercial Platforms:
Ayy Ride (Mapbox & Stripe)Duplex TV (All TV OS)QBox Smart LockerTelehealth PlatformHomeServe Services
Production Tech Stack8 Technologies
React Native
Expo SDK 52+
Mapbox GL
Stripe PaymentSheet
Socket.IO
PostgreSQL
EAS Build
ProGuard / R8
Role Milestone 01Verified Engagement
02 / 05

Solo Full-Stack Architect

@ApnaUstad
0 → 1 Full Ecosystem Delivery
2024 — Present
// Solo Product ArchitectIndependent Greenfield

Key Engineering Responsibilities & Impact

Delivered high-reliability mobile architecture, cross-platform UI, and systems integration.

Designed and authored the complete client mobile app, worker mobile app, Node.js REST API, PostgreSQL database schemas, and React admin portal independently.
Engineered real-time booking lifecycle state machine (pending, accepted, in-progress, completed) with automated worker dispatch matching and commission payouts.
Implemented passwordless email OTP verification via Resend on custom domain, secure JWT sessions in expo-secure-store, and Socket.IO bidirectional job tracking.
Shipped Commercial Platforms:
ApnaUstad Client AppApnaUstad Worker AppNode.js Backend MicroservicesReact Admin Dashboard
Production Tech Stack7 Technologies
React Native
Node.js
Express
PostgreSQL
Socket.IO
Resend API
expo-secure-store
Role Milestone 02Verified Engagement
03 / 05

Major Contributor

@Mashrab-e-Hamdania
1,586 Searchable Islamic Titles
v1.0.2 Shipped
// 5.0 ★ Google Play AppLive on Google Play

Key Engineering Responsibilities & Impact

Delivered high-reliability mobile architecture, cross-platform UI, and systems integration.

Contributed core modules for spiritual companion app serving Noorbakshia and Hamdania communities across Baltistan and Kashmir, rated 5.0 on Google Play.
Built background audio streaming recitation player with lock-screen media controls and rapid offline-first search index spanning 1,586 titles across Quran, fiqh, and aurad.
Shipped Commercial Platforms:
Hamdania Audio & Library (Google Play)
Production Tech Stack5 Technologies
React Native
Audio Streaming
SQLite / Full-Text Search
expo-video
Google Play Console
Role Milestone 03Verified Engagement
04 / 05

Software Developer

@Techsolab
Cross-Platform Engineering
Aug 2024 — Present
// Mobile Software EngineerRawalpindi, PK

Key Engineering Responsibilities & Impact

Delivered high-reliability mobile architecture, cross-platform UI, and systems integration.

Built cross-platform React Native mobile client applications with Firebase authentication workflows and responsive UI components.
Integrated real-time database synchronizations and state management pipelines.
Shipped Commercial Platforms:
Cross-Platform Mobile Apps
Production Tech Stack4 Technologies
React Native
Firebase Auth
Firestore
REST APIs
Role Milestone 04Verified Engagement
05 / 05

B.S. Computer Science

@Virtual University of Pakistan
CS Degree in Progress
Mar 2024 — Present
// Academic FoundationRawalpindi, PK

Key Engineering Responsibilities & Impact

Delivered high-reliability mobile architecture, cross-platform UI, and systems integration.

Pursuing Bachelor of Science in Computer Science in parallel with full-time production engineering.
Focusing on computational complexity, low-level system memory boundaries, and relational database normalization.
Production Tech Stack4 Technologies
Data Structures
Algorithms
Object-Oriented Design
Databases
Role Milestone 05Verified Engagement

Academic Foundation & Diplomas

UPS College & CODSOFT Certified Foundations

ICS · UPS College · 2023 · 76.8%Matric, General Science · UPS College · 2021 · 94%HTML, CSS & JavaScript · CODSOFT · 2024

How the work lands

Platforms, and the waya build gets hired.

Where it ships

  • iOS & Android

    React Native products with the gesture thread on the native side, store signing, and both phone roles in one codebase.

  • Smart TV

    Roku BrightScript, LG webOS, Android TV, and Samsung Tizen — D-pad focus and HLS playback for a ten-foot screen.

  • The system behind the app

    Node, PostgreSQL, Socket.IO, and a React admin desk when one person owns the product end to end.

Ways to work together

  1. 01

    Full-time

    A mobile seat on a product team that already has a roadmap.

  2. 02

    Contract

    A scoped build: maps, payments, live tracking, video, or a TV client.

  3. 03

    Consulting

    A frame-rate, architecture, or release review before the next store cut.

[ DIRECT CONTACT ]

Let's build high-impact mobile experiences together.

Available for full-time senior mobile roles, contract engagements, and consulting on React Native, Smart TV, or full-stack platforms.

Emailsardar.dev.pk@gmail.com
WhatsApp+92 336 9164460
GitHubLinkedIn

Send a Message

Drop a note regarding your project scope, platform needs, or timeline.