Muneeb Arshad
Software Engineer |Full Stack Developer |Scalable Systems
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Asynchronous Event-Driven Messaging Pipeline
Built a high-throughput event-driven system to handle resource-heavy tasks like transactional emails and notifications without slowing down API requests.
Instead of processing these tasks directly inside the API, I designed a background job pipeline where requests are pushed to RabbitMQ and processed asynchronously by dedicated workers. This helped keep the API responsive while allowing the system to handle higher workloads reliably.
RabbitMQ: Designed exchanges, queues, and routing for reliable message delivery and background job processing.
Node.js & Fastify: Built lightweight, high-performance worker services for consuming and processing jobs.
Redis: Used for caching and job deduplication to avoid unnecessary processing.
PostgreSQL: Managed persistent application and job-related data.
Nodemailer: Automated transactional email delivery through background workers.
Docker: Containerized the services for consistent development and deployment.
Monitoring: Added queue health monitoring to track worker and messaging activity.
Tech Stack: Fastify | Node.js | RabbitMQ | Redis | PostgreSQL | Docker | Nodemailer
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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
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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
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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🚀 ...😊
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