I’m a Full Stack Developer specializing in the MERN stack with over 6 years of hands-on experience building scalable, production-grade systems. My passion lies in crafting robust backend architectures, real-time systems, and high-performance APIs that power reliable modern applications.
I focus on building solutions that are fast, secure, and maintainable—from designing database schemas and optimizing queries to deploying distributed microservices on the cloud.
- Languages & Frameworks: JavaScript (ES6+), TypeScript, Node.js, Express.js, NestJS, React.js, Next.js
- Databases: MongoDB, PostgreSQL, MySQL, Redis
- Cloud & Infrastructure: AWS, DigitalOcean, Vercel, Docker, Nginx, PM2
- Messaging & Realtime: WebSockets, Socket.io, MQTT, RabbitMQ, Redis Pub/Sub
- CI/CD & DevOps: GitHub Actions, Docker Compose, Cloud Deployment Pipelines
- Testing & QA: Jest, Supertest, Postman, Cypress
- Other: GraphQL, RESTful APIs, Webhooks, Microservices, Caching & Performance Optimization
Since most of my projects are under NDA, here are a few live production systems I’ve contributed to, designed, developed & helped scale:
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MessageMind AI-driven omnichannel platform for customer engagement across WhatsApp, Messenger, Instagram, and web chat.
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WeWise Business automation platform for WhatsApp marketing, customer flow management, and campaign analytics.
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FoorWeb SaaS platform providing customizable digital storefronts and business automation tools.
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NadlanOne Real-estate management system offering property listings, broker tools, and analytics dashboards.
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ZDSL Enterprise software and automation solutions for real-estate business service providers in Bangladesh.
I’m currently refining backend infrastructures that integrate AI workflows, real-time data pipelines, and multi-tenant systems for enterprise-grade applications. My work focuses on solving challenges in scalability, performance, and system reliability through strong architecture and clean design.
| 🌐 Portfolio | 🐙 GitHub | |||||
|---|---|---|---|---|---|---|
| devhasibulislam.vercel.app | in/devhasibulislam | @devhasibulislam | @devhasibulislam | devhasibulislam@gmail.com | Chat on WhatsApp | YouTube Channel |
Building scalable systems, one line of code at a time.





