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rabbisudo
Available for full-time roles & high-impact contracts

Building resilient backends, fluent mobile apps, & modern web platforms.

Hello, I'm Rabbi Hassan (known as @rabbisudo). I am a software engineer focused on scalable backends in Node.js, cross-platform mobile apps in Flutter, and reactive frontends in Next.js.

Explore Selected WorkGet in Touch
50k+
Active App Users
Across production apps
60 FPS
Client Performance
Flutter engine rendering
<15ms
API Edge Latency
Redis & query caching
99.9%
Production Uptime
Resilient deployments
Production Portfolio

Featured Engineering Work

Selected production applications built from architecture to deployment, serving thousands of daily active users.

Study Verse
Production v1.0.0

Study Verse

Productivity & Focus Ecosystem for High-Performance Learners

A synchronized focus and study suite engineered with a cross-platform Flutter client, PostgreSQL analytics, and real-time WebSocket session telemetry.

Synchronized Pomodoro focus sessions with real-time WebSocket state syncing
Relational schema architecture in PostgreSQL tracking student diagnostics
Native Flutter compilation achieving 60fps performance across iOS and Android
FlutterNext.jsPostgreSQLWebSocketsDart
Get on Google Play
Progga - HSC & Admission
Production v1.0.1

Progga - HSC & Admission

High-Scale EdTech & Competitive Exam Platform

A high-throughput learning portal serving tens of thousands of active students with automated test evaluations, dynamic question banks, and Redis-backed caching.

Automated exam and live assessment module serving 50k+ active aspirants
Sub-millisecond query caching layer in Redis reducing database workload by 60%
Stateful Flutter mobile experience with offline-first synchronization
FlutterNext.jsPostgreSQLRedisEdTech Architecture
Get on Google Play
Capabilities

Technical Domains & Stack

Backend & APIs

Architecting scalable Node.js microservices, resilient APIs, and optimized database storage engines.

Node.js & TypeScriptEvent-driven architecture, asynchronous microservices, REST & GraphQL APIs
PostgreSQLIndex optimization, query execution profiling, schema design
RedisIn-memory caching, Pub/Sub message queuing, rate limiting
REST & WebSocketsHigh-efficiency real-time bidirectional client communication
Express & NestJSModular backend architectures, authentication pipelines & middleware
Philosophy

Engineering Principles

01

Architecture Over Hacks

Clean separation of concerns, strict type-safety, and modular foundations that make systems effortless to scale and maintain.

02

Obsessed with Performance

From query indexing to client-side bundle size, every millisecond and frame counts toward delivering an unforgettable user experience.

03

Human-Centric Craftsmanship

Software isn't just code — it's an interface between complex systems and real people. Clarity, speed, and elegance are non-negotiable.

Get in Touch

Let's build something exceptional.

Whether you have an upcoming project, are looking for a reliable software engineer, or just want to connect — my inbox is always open.

Send Email (rabbisudo@gmail.com)