Siraj Abdul Raheem

Senior Full Stack Developer

Islamabad, Pakistan | zlaam.dev@gmail.com | +92 336 4684500
https://github.com/mr-zlaam | https://community.devsouls.online

Summary

Accomplished Senior Full Stack Developer with 4.7 years of progressive experience specializing in MERN/PERN stack, scalable architecture, microservices, real-time systems, and cloud infrastructure. Proven track record of building high-performance web and mobile products, modernizing legacy codebases, and leading production-first engineering execution.

Core Technical Competencies

Backend Development

Node.js Ecosystem: Express.js, Fastify, Nest.js, middleware design, RESTful APIs
Microservices Architecture: RabbitMQ event-driven systems, service discovery, orchestration
Real-time Systems: Socket.IO/WebSocket synchronization and push-driven workflows
API Development: OpenAPI/Swagger docs, authentication strategies, rate limiting

Frontend Development

React Ecosystem: React 18+, Next.js 14+ App Router, Server Components
State Management: Redux Toolkit, Context API, Zustand, TanStack Query
UI/UX Development: Tailwind CSS, shadcn/ui, Material UI, accessible design systems
Performance Optimization: code splitting, lazy loading, bundle tuning, Core Web Vitals

Mobile Development

React Native: CLI, React Navigation, Expo, native module integration
Mobile Architecture: clean architecture, offline-first flows, iOS/Android performance
Mobile DevOps: Play Store release workflows, CI/CD, automated test pipelines

Database Management

SQL: PostgreSQL, MySQL, migrations, complex query optimization
MongoDB: aggregation pipelines, indexing, performance tuning
Redis: caching, session strategy, pub/sub messaging
ORM/ODM: Prisma, Drizzle, Mongoose with type-safe schema management

Cloud & DevOps

AWS Services: EC2, S3, RDS, Vercel edge workflows
Containerization: Docker, Docker Compose, image optimization
CI/CD Pipelines: GitHub Actions with automated test and deployment pipelines

Architecture & Design Patterns

System Design: microservices vs monolith decisions, CQRS, event sourcing, DDD
Security: JWT, OAuth 2.0, RBAC, secure service design
Performance Engineering: load balancing, indexing, caching and query optimization

Professional Experience

Software Developer | Veeivs, Islamabad

August 2025 – Present
Technologies: Node.js, Nest.js, Django, RabbitMQ, Socket.IO, Redis, React Native, AWS, Docker

Unified disconnected Django/PostgreSQL and NestJS/MongoDB systems into an event-driven architecture.
Configured RabbitMQ (direct/topic/fanout + dead-letter queues) and reduced message loss by ~95%.
Scaled real-time services for 5,000+ concurrent connections using Socket.IO with Redis fan-out.
Led a 100k+ LOC TypeScript migration and drove type errors from thousands to zero.
Built React Native marketplace features including vendor operations and analytics workflows.
Implemented AWS-backed CI/CD and monitoring with automated operational alerts.

Full Stack Developer | Aldbrook Mortgage, Islamabad

January 2023 – July 2025
Technologies: React, Node.js, Docker, PostgreSQL, Redis, AWS

Delivered a collaborative browser-based code editor platform with secure execution workflows.
Improved Lighthouse score from 65 to 92 and reduced TTI by ~40% through frontend optimization.
Implemented Redis cache strategy reducing database load by ~70%.
Integrated third-party verification and payment systems with resilient fallback patterns.
Strengthened reliability via health checks, alerting pipelines, and structured incident handling.

Full Stack Developer | Percy (Remote)

December 2021 – January 2023
Technologies: Next.js, React, TypeScript, MongoDB, Node.js

Built multi-tenant CRM systems serving 50+ business clients.
Implemented real-time dashboards and large-scale reporting over high-volume datasets.
Delivered role-based access models and cross-system synchronization tooling.
Built property management and logistics modules with workflow automation.

Frontend Developer | Fiverr (Remote)

May 2021 – October 2021
Technologies: React, Next.js, Tailwind CSS, Figma, WordPress

Shipped 20+ responsive marketing websites with mobile-first design.
Built booking/e-commerce workflows and secure checkout integrations.
Delivered strong Core Web Vitals and SEO implementations across projects.

Technical Projects

Real-time Marketplace Mobile Application

React Native + Node.js + MongoDB + Redis + Socket.IO architecture.
Vendor dashboard, real-time orders, in-app communication, and scalable payment flows.
Designed performance targets for fast first-load and smooth high-volume UX.

Microservices Unification Project

Strangler migration from monolith to service-based architecture.
RabbitMQ event contracts, dead-letter handling, and observability instrumentation.
Improved deployment stability and operational response time across teams.

DevSouls Blog Platform

Next.js App Router platform with CMS workflow and performance-first rendering.
Features include publishing workflows, search, syntax highlighting, and newsletter integration.

Professional Development

Technical Blog & Publications

DevSouls blog publications on system design, React patterns, Node.js optimization, and database performance.
Open-source contribution history including tooling and framework ecosystem contributions.

Continuous Learning

Current focus: edge computing with Cloudflare Workers and distributed execution models.
Hands-on, project-first learning methodology backed by code review discipline.

Technical Philosophy

Clean, maintainable code and consistent architectural standards.
Testing-first mindset for critical logic and API reliability.
Performance and security as core product features, not afterthoughts.

Languages

English: Professional proficiency
Urdu: Native speaker
German: Learning

Resume

Professional Resume

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