Open to opportunities

Zaid Mubbasher

@zaidmubbasher

Message

I ship secure mobile and web products for fintech, SaaS, and IoT.

Pakistan

Message

What I'm looking for

I'm looking for remote opportunities where I can lead end-to-end delivery of secure mobile and web products, work asynchronously with strong engineering teams, and build production software in fintech, SaaS, IoT, or e-commerce.

I've shipped production mobile and web software across fintech, banking, IoT, e-commerce, and enterprise SaaS for Devflovv, Barq Fintech, Techificent, and UBL Bank.

At Devflovv, I lead engineering for KēZ (KeyFree), a live App Store connected-vehicle app, delivering OAuth and biometric login, secure sessions, push notifications, BLE/MQTT integration, SSL pinning, and Fastlane CI/CD. I also contribute to Streamline SaaS with real-time messaging, WebRTC/VoIP calling, calendar, and issue tracking.

For UBL Tezraftaar, I spent three years building security-sensitive banking features, integrating transactional REST APIs and creating offline-first CoreData sync with Clean Architecture and MVVM.

Alongside full-time work, I've shipped React Native apps to the App Store and Play Store and built React/Node.js SaaS platforms, WordPress products, WooCommerce stores, and tailored client solutions. I enjoy owning delivery end to end, from architecture and design through release, support, reviews, and mentoring.

Experience

Work history, roles, and key accomplishments

Current

Software Engineer & Project Lead

Current

Devflovv

Dec 2025 - Present (8 months)

Led engineering for KēZ (KeyFree), a live App Store connected-vehicle app, shipping through dev/staging/prod with Fastlane CI/CD. Built OAuth + biometric login, secure sessions, push notifications, and BLE/MQTT device integration with SSL pinning.

Swift SwiftUI UIKit React Native Android Kotlin Clean Architecture Combine MQTT WebRTC PushKit OAuth Biometrics Keychain SSL Pinning Fastlane CI CD Git SPM Cocoapods NPM XCTest Firebase Agile Scrum

Current

Freelance Software Engineer

Current

Self Employed

Jan 2020 - Present (6 years 7 months)

Built cross-platform React Native apps (e-commerce, booking, services) shipped to App Store & Play Store with payments, push notifications, and REST/Firebase backends. Developed multiple SaaS products with React + Node.js and delivered WordPress end to end.

React Native Redux JavaScript TypeScript React Node REST APIs Firebase WordPress WooCommerce PHP HTML CSS MySQL Git Agile Scrum

iOS Developer

Barq Fintech (Xint Solutions)

Jan 2025 - Nov 2025 (10 months)

Shipped customer-facing payment features under strict reliability, security, and performance requirements. Designed a reactive Combine network layer with centralized error handling and clean request/response pipelines.

Swift SwiftUI UIKit Combine MVVM Clean Architecture REST APIs Biometrics SSL Pinning Fastlane CI CD Git XCTest Firebase

iOS Developer

Techificent

Sep 2024 - Dec 2024 (3 months)

Supported 5+ live client apps, diagnosing integration defects and performance issues under tight timelines. Scoped requirements directly with clients and shipped tailored features via Storyboard, XIB, and programmatic UI.

Swift UIKit Storyboards Xibs Programmatic REST APIs Git Agile Scrum

iOS Developer

O3 Interfaces (UBL Bank)

Sep 2021 - Aug 2024 (2 years 11 months)

Delivered for 3 years on UBL Tezraftaar, a large-scale mobile banking feature in a regulated, security-sensitive environment. Integrated REST APIs for transactional and account flows; designed CoreData persistence for offline caching and sync.