Muneeb Arshad
Software Engineer |Full Stack Developer |Scalable Systems
New to Contra
Muneeb is building their profile!
Tamper-Proof Content Blocker & Device Protection App
System-Level Mobile Threat Protection & Local Network Filtering
The Challenge
Standard Android content filters are easy for users to bypass, disable, or uninstall, while third-party remote VPNs introduce severe latency and data privacy risks.
The Solution & Impact
Built a Kotlin-native Android application that enforces device-level content filtering and anti-tampering protection locally without sending user traffic to external servers.
Local VPN & DNS Filtering: Intercepts system-wide DNS packets via a local VpnService TUN interface to block prohibited domains locally with zero latency.
System-Level Security Hooks: Utilized Android Accessibility Services and Device Admin APIs to prevent unauthorized uninstallation, force-stopping, or setting bypasses.
Tamper-Proof Lock: Enforced settings locking via an encrypted, randomized password generator to ensure non-bypassable enforcement.
Tech Stack: Kotlin | Android SDK | VpnService | Accessibility APIs | DeviceAdminReceiver | Jetpack Compose
1
128
Corporate Booking Platform Backend
Enterprise Booking Engine built for High Availability & Scale
The Challenge
Legacy corporate booking platforms often face concurrency locks, database bottlenecks, and server downtime during peak employee booking windows.
The Solution & Impact
Engineered a containerized, enterprise-grade backend featuring strict controller-service-repository patterns to guarantee zero booking overlap and 99.9% uptime.
Distributed Microservices: Architected with NestJS and TypeScript for modular, decoupled business logic and seamless service scaling.
Database Efficiency & Integrity: Leveraged PostgreSQL with Prisma ORM for type-safe database queries, automated migrations, and fast transactional locks.
Production-Ready & High Availability: Fully containerized with Docker, complete with automated OpenAPI/Swagger documentation for smooth frontend integration.
Tech Stack: NestJS | TypeScript | Prisma ORM | PostgreSQL | Docker | Swagger / OpenAPI
1
106
Multi-Tenant B2B AI Chatbot Platform
High-Concurrency SaaS Architecture for Enterprise Clients
The Challenge
Standard AI chatbots suffer from high latency and data privacy risks when handling multiple business clients at scale.
The Solution & Impact
Built a multi-tenant SaaS platform that delivers sub-second AI responses while keeping client data strictly isolated.
Isolated Tenant Architecture: Built using Fastify & Supabase PostgreSQL to dynamic-inject business-specific system prompts without data leakage.
Ultra-Fast Inference: Integrated Groq API to achieve low-latency response times during peak concurrent user traffic.
Live Telemetry & Dashboard: Engineered a Next.js admin portal tracking real-time sentiment analysis, token usage, and latency metrics.
Tech Stack: Next.js | Fastify | TypeScript | Supabase PostgreSQL | Groq API | WebSockets🚀 ...😊
1
94