Languages
- JavaScript (ES6+)
- TypeScript
- C / C++
Md Abdur Razzak
Full-Stack Engineer
Building scalable, high performance web applications & APIs end-to-end. Building scalable web applications end-to-end. Solving problems that matter.
ReactNext.jsTypeScriptNode.jsMongoDBPostgreSQLRedisBullMQRabbitMQNGINXLoad BalancerAI AgentDocker
Md Abdur Razzak
Full-Stack Engineer
Available
2+ Yrs Experience
About Me
Passionate about building fast, intuitive web interfaces and scalable backend infrastructure.
I'm a Backend-focused Full Stack Developer with 2+ years of experience building and shipping scalable web applications from end to end. I've contributed to 10+ live products, working across backend architecture, APIs, databases, frontend interfaces, and production deployments.
My core strength is building robust backend systems with Node.js, TypeScript, Express.js, MongoDB, PostgreSQL, and Redis, while also creating responsive and intuitive interfaces with React.js and Next.js.
I also use AI-assisted development and modern frontend tools to design and build clean, user-friendly interfaces faster without compromising code quality or maintainability. I enjoy turning real-world requirements into reliable products, optimizing performance, and solving production system challenges.
When I'm not building software, I'm exploring new technologies, AI tools, system design, and better ways to build products that are fast, scalable, and genuinely useful.
2+
Years Experience
10+
Live Products
100%
Production Ready
Clean Frontend Architecture
Building modular, reusable React and Next.js components with strict TypeScript types and responsive design systems.
Robust API Integration
Designing and consuming RESTful and real-time WebSockets APIs with predictable state management and error handling.
Performance & DX Optimization
Optimizing render cycles, bundle sizes, database queries, and caching to ensure fast loading times across devices.
Production Ready
Writing maintainable code tested for edge cases, containerized with Docker, and deployed via reliable CI/CD pipelines.
Skills & Technologies
Core technologies and frameworks I use to build scalable web applications.
Backend & APIs
- Node.js
- Express.js
- Nest.js
- BullMQ & RabbitMQ
- REST APIs & Webhooks
- Stripe Integrations
Databases & Storage
- MongoDB (Mongoose)
- PostgreSQL (Prisma)
- Redis
- VectorDB
AI & LLM
- LangChain & LangGraph
- OpenAI & Gemini SDK
- LLM Integration
Frontend
- React.js
- Next.js
- Tailwind CSS
DevOps & Cloud
- Docker
- NGINX & Load Balancing
- Cloudflare & R2
- DigitalOcean
- Git & GitHub
Projects
Production-grade full stack projects tackling real-world challenges, not tutorials or todos.
Dating & Social
Vivaleve
Dating & Social Platform for STI Community
A privacy-first modular monolithic backend API and real-time social engine for individuals living with STI conditions (HPV, HIV, HSV-1/2)—enabling match discovery via swipes, post feeds, winks, blogs, events, first-date ideas, and Stripe-powered premium messaging and private albums.
↑ Flushes thousands of buffered social interactions per minute with sub-20ms database queries
TypeScriptNode.jsExpress.jsMongoDB+8
Operations
Stone Portal
Enterprise Field-Service & Operations Platform
A robust backend API and real-time operations engine for landscaping and field-service enterprises—handling estimates, automated invoicing, project scheduling, crew attendance, payroll, equipment dispatch, and Stripe one Time payment.
↑ Processes async background jobs & real-time crew dispatches with sub-20ms database queries
TypeScriptNode.jsExpress 5PostgreSQL+7
Marketplace
Ooh Ahh
On-Demand Beauty Service Platform
A location-based service marketplace connecting users with nearby beauty professionals, similar to an Uber-style booking system for salon and home services.
↑ Handled real-time booking workflows with low-latency updates
Node.jsExpress.jsMongoDBRedis+4
Rental Services
SELE
Car Rental Platform in USA
A rental app that allows agencies to list cars for rent and users to rent them with real-time booking and payment. Includes in-app messaging between agencies and renters.
↑ Handled multiple concurrent rentals with instant booking confirmation
Node.jsExpress.jsMongoDBSocket.io+2
Marketplace
Re-Wears
B2C Marketplace in Dubai
A Dubai-based e-commerce platform where users can buy and sell products. The platform supports in-app messaging, notifications, and real-time booking for products or services.
↑ Scalable platform with real-time communication and transactions
Node.jsExpress.jsMongoDBSocket.io+2
Real Estate
Project Finder
Real Estate Agency Platform
A subscription-based real estate platform that allows users to discover and browse properties. Users receive notifications from admins, use advanced filters, and access premium listings after subscribing.
↑ Thousands of property views per month with real-time updates
Node.jsExpress.jsMongoDBRedis+3
Marketplace
263ProLink
Service Marketplace Platform
A platform where users can provide and receive services. Supports subscription-based access, one-time payments, and real-time communication.
↑ Facilitated seamless service transactions with real-time communication
Node.jsExpress.jsMongoDBSocket.io+2
Work Experience
My professional engineering journey building web applications and full stack services.
Full Stack Developer
Spark Tech Agency
Architecting and delivering full stack web applications and scalable microservices for B2B SaaS and B2C platforms. Built responsive React/Next.js user interfaces integrated with robust Node.js, Express, and MongoDB backends. Improved API & page load performance through query optimization, SSR, and Redis caching. Implemented background job processing with BullMQ, SMS/SMTP services, and containerized deployments with Docker.
Node.jsExpress.jsMongoDBRedisBullMQDockerCI/CDMonorepo
Frontend Developer Intern
FKR IT
Worked primarily on frontend development using React and Next.js, building responsive and user-friendly interfaces. Collaborated with backend teams to integrate RESTful APIs and contributed to small backend services when needed. Focused on performance optimization and clean UI architecture.
ReactNext.jsTypeScriptTailwind CSSREST APIGitHub Actions
Get in Touch
Interested in working together or discussing potential opportunities? Let's connect.
Whether you have a specific role, project collaboration, or architectural question in mind, feel free to reach out.