Abdullah.

Abdullah Sajjad

Software Engineer | Scaling High-Traffic Platforms & AI-Driven Mobile Apps

Overview

Full-stack engineer with a track record of scaling platforms to thousands of users and slashing API latency by 95%. Expert in Flutter, React Native, and Node.js, with deep experience in AI-driven identity verification (AWS Rekognition) and high-traffic AWS migrations. Currently leading the transition of BrelloHealth to a custom scalable architecture while managing a portfolio of live apps with 7,000+ users.

Islamabad, Pakistan

Experience

2026 – Present

WORK

Software Engineer

BrelloHealth

Leading the transition of a high-traffic health platform from WordPress to a custom-built, scalable architecture on AWS.

Key Achievements

→Managing a platform with 1,000+ daily visitors, 100+ new daily customers, and 500+ renewals.

→Leading the migration from WordPress to a custom, scalable AWS-hosted architecture.

→Auditing the system to introduce UX improvements and maintainability for both users and administrators.

→1,000+ daily visitors

→100+ new daily customers

→500+ renewals

Feb 2026

WORK

Software Engineer

Rank Orbit

Own mobile and web feature delivery end-to-end, from architecture to deployment, across a portfolio of fintech, social, and marketplace products.

•Developed RAALE (AI dating/marriage app) using React Native and Node.js, leveraging OTA updates and CI/CD for rapid iteration.

•Own mobile and web feature delivery end-to-end, from architecture to deployment, across a portfolio of fintech, social, and marketplace products.

•Built Quatta, a gamified finance app generating a Money Health Score and daily savings/debt missions; integrated live stock data, an income calculator, and Stripe subscriptions. [App Store: https://apps.apple.com/us/app/quatta/id6755897717] [Play Store: https://play.google.com/store/apps/details?id=com.quatta.app]

•Built Dawnce on Flutter, an alarm app using Google ML Kit pose detection to verify dance moves before dismissal; integrated RevenueCat for billing. [App Store: https://apps.apple.com/pk/app/dawnce/id6760565547]

•Led frontend architecture on Altrhouse, a 3D fashion visualizer; built a neighbor-loading cache with Draco compression for near-instant mannequin previews.

•Rewrote the backend on Sharecase, a vibe-coded mentorship platform, cutting average API response time from 20s to under 1s.

•Built real-time chat, AWS liveness/face verification, and a moderation panel for Raale (AI dating); audited Callvera, a Telnyx call-routing/bidding platform.

Key Achievements

→Scaled Quatta to nearly 7,000 users across iOS and Android with 200+ active subscriptions.

→Engineered a multi-layered identity verification system for RAALE using AWS Rekognition and a custom matching algorithm that cross-references 6 profile photos against live video captures.

→Implemented custom logic to prevent anonymous users from bypassing liveness checks, significantly increasing platform trust and security.

→Cutting average API response time from 20s to under 1s (some endpoints down to double-digit ms) by removing redundant calls, restructuring the DB schema, and rewriting slow queries.

→7,000 users

→200 active subscriptions

→Cutting average API response time from 20s to under 1s

FlutterStripeGoogle ML KitRevenueCatDraco compressionAWSTelnyxReact NativeNode.jsAWS Rekognition

Mar 2025 – 2026

WORK

Software Engineer

KNOWA Tech

Led Flutter frontend development (Riverpod, Clean Architecture) for AiCenna, covering responsive UI, localization, and caching strategy.

•Led Flutter frontend development (Riverpod, Clean Architecture) for AiCenna, covering responsive UI, localization, and caching strategy.

•Optimized auth flows and data handling, cutting initial screen load time by 30% and failed state transitions by 25%.

•Built offline-friendly UI states, cloud upload progress handling, and wearable data visualizations.

•Built the AiCenna Web App (Next.js) and Admin Panel, including dashboards, CRUD interfaces, and role-based access views.

•Integrated Stripe payments and dynamic map overlays for region-specific logic on the Money Drop project.

Key Achievements

→Cutting initial screen load time by 30%

→Cutting failed state transitions by 25%

FlutterRiverpodClean ArchitectureNext.jsStripe

Feb 2025 – Dec 2025

WORK

Software Engineer

U.n.I & Cirkles

Improved frontend performance for U.n.I, a social-AI platform built with Flutter, Riverpod, and Django, reducing screen render time by 20% and lowering UI-related crashes by 15%. Contributed to Cirkles (Next.js) by building event discovery UI, AI-assisted suggestions, and map-based activity browsing, improving navigation clarity and interaction efficiency by 25%.

•Improved frontend performance for U.n.I, a social-AI platform built with Flutter, Riverpod, and Django, reducing screen render time by 20% and lowering UI-related crashes by 15%. [Play Store] [App Store]

•Contributed to Cirkles (Next.js) by building event discovery UI, AI-assisted suggestions, and map-based activity browsing, improving navigation clarity and interaction efficiency by 25%. [LINK]

Key Achievements

→Reducing screen render time by 20%

→Lowering UI-related crashes by 15%

→Improving navigation clarity and interaction efficiency by 25%

FlutterRiverpodDjangoNext.js

Project Portfolio

ACADEMIC

Present

Mood Sync

Developer

Built Mood Sync at the SOFTEC 24-hour Hackathon - an AI assistant with mood-driven UI, task parsing, daily summaries, and OCR-powered notes.

AIOCR

PERSONAL

Present

Ai-Bay

Developer

Built Ai-Bay, an AI-powered service marketplace featuring an automated contract engine. I implemented a workflow where AI generates immutable contracts from chat negotiations to prevent tampering, integrated e-signing for both parties, and coded automated logic for agreement cancellations and dispute resolution.

AIReal-time chat

PERSONAL

Present

Multi-gym subscription app

Developer

A comprehensive fitness platform featuring an offline-first video engine. I engineered a local storage management system with custom compression logic to deliver high-quality exercise tutorials while minimizing the app's storage footprint.

FlutterFirebaseLocal StorageVideo Compression

Live

Education

2021 – 2025

Bachelor of Science

COMSATS University IslamabadSpecialization in Computer Science

GPA: 3.06

Thesis: Fake Currency Detection System using ML/OpenCV

Societies & Activities

Mobile App Lead, RAS Student Chapter

Impact & Recognition

Awards

COMSATS University Islamabad

Runner-Up, CodeWars competitive programming

Social Impact & Activities

HACK THE PACKWORKSHOP

Organized HACK THE PACK

Organized the event at COMSATS University Islamabad

Skills & Interests

Flutter

TECHNICAL

React

TECHNICAL

Next.js

TECHNICAL

Riverpod

TECHNICAL

REST APIs

TECHNICAL

Firebase

TECHNICAL

Git/GitHub

TOOL

VS Code

TOOL

Postman

TOOL

RevenueCat

TECHNICAL

Node.js

TECHNICAL

Supabase

TECHNICAL

BloC

TECHNICAL

PostgreSQL

TECHNICAL

Tailwind CSS

TECHNICAL

Material & Cupertino UI

TECHNICAL

Responsive Design

TECHNICAL

Stripe

TECHNICAL

In-App Purchases

TECHNICAL

Redux

TECHNICAL

NestJS

TECHNICAL

Django

TECHNICAL

FastAPI

TECHNICAL

Jira

TOOL

Figma

TOOL

React Native (Expo)

TECHNICAL

GetX

TECHNICAL

Communication

Working across multiple languages, enabling global collaboration and clear technical outreach.

Dart

JavaScript

Python

Kotlin

Java

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