01 · IoT Mobile App
Chroneering
Built the CHRONEERING companion app from scratch, delivering a minimum viable product that connects seamlessly with their custom hardware solutions.
React NativeNestJSBLEAI/LLM
Available for new projects
Rabab Zahra
I build mobile apps, web platforms, and the APIs that connect them.
4+
Years building
8+
Products shipped
15+
Technologies
About
Engineering with intent
Full-stack engineer based in Lahore, Pakistan. 4+ years shipping mobile apps, SaaS platforms, and IoT-connected products for international clients across the UAE, US, and UK.
Currently deepening work in AI-powered mobile experiences and edge-synced BLE devices.
📍 PKT (UTC+5) · Remote-friendly · Strong overlap with UAE/Gulf hours4+
Years building
75+
Screens shipped
15+
Technologies
ByteMage stepped in seamlessly and stabilized the platform. They do what they say they'll do, with clear timelines, honest communication, and reliable delivery. They go beyond scope by solving problems and making the whole project stronger. They understand the problem space and adapt in real time, remaining flexible, transparent, and committed, while genuinely caring about building something great.
Skills
Tools & tech I work with
Core stack shown below. Expand any category to see the full list.
Languages
RubyRails & scripting
JavaScriptWeb & Node.js
TypeScriptTyped applications
PythonAPIs & services
Frontend Technologies
React.jsUI library
React NativeCross-platform mobile
ReduxState management
TanStack QueryServer state
Backend Technologies
Ruby on RailsWeb framework
Node.jsJavaScript runtime
NestJSTypeScript APIs
RESTful APIsAPI design
Databases
PostgreSQLRelational
MySQLRelational
MongoDBDocument store
FirebaseRealtime & auth
Integrations & APIs
StripePayments
PayPalPayments
MixpanelProduct analytics
KlaviyoEmail marketing
Tools & Platforms
GitVersion control
GitHubCollaboration
PostmanAPI testing
RedisCache & queues
Featured Projects
Selected work
A few products I've designed and engineered from the ground up.
02 · Mobile & Web Platform
TimeTrail
A security workforce platform with mobile check calls, QR patrols, geofencing, live GPS tracking, and a web command center for scheduling, analytics, and real-time operations.
React NativeNestJSReduxTanStack Query
03 · Expert Marketplace
Assemble (BeGreat)
A two-sided marketplace connecting users with vetted industry experts for paid live 1:1 video sessions and async video/audio Q&A across music, fashion, business, and more.
Ruby on Rails 7PostgreSQLAWS S3StripeGoogle Calendar
04 · Restaurant Menu Platform
TapTab
A digital menu platform where diners browse on mobile or desktop and restaurants manage menus, orders, and payouts through TapManager, with Stripe Connect and a full order delivery flow.
NestJSTypeScriptPostgreSQLStripe Connect
Experience
The journey so far
Full Stack Engineer
Jul 2024 to PresentBytemage, Lahore
- Architected a 75+ screen React Native app and companion React web app, accelerating product modernization by 40%.
- Built scalable NestJS and TypeScript backend services with REST APIs and real-time sync across mobile, web, and cloud microservices.
- Delivered WebSocket and BLE pipelines between smartwatch firmware, mobile apps, and AI/LLM cloud microservices for intelligent notification filtering.
- Improved API reliability and load times through refactoring, Redis caching, and full-stack performance work.
Software Engineer
Jun 2022 to Jun 2024Devsinc, Lahore
- Developed scalable SaaS web applications and RESTful APIs for international clients in distributed Agile teams.
- Led phased Rails 4 to 6 and Rails 5 to 7 modernizations on live production apps, including Zeitwerk migration and Hotwire adoption.
- Optimized PostgreSQL queries and integrated Stripe, Stripe Connect, Google OAuth/Calendar, Cloudflare Stream, Mixpanel, Klaviyo, Twilio, and Mailgun.
- Built a real-time SMS alert system with React, Rails 7, and Turbo for reliable notifications without full page reloads.
Bachelor of Science in Computer Science (BSCS)
2018 to 2022National University of Computer and Emerging Sciences (FAST-NUCES), Lahore
Writing
Writing
Technical posts on what I'm building and learning.
How I synced BLE firmware with React NativeComing soon
More posts coming soon.
Contact
Let's build something
Have a project in mind or just want to say hello? My inbox is always open.