TahjibHossain Leon
Full-Stack Developer with 3+ years of experience building scalable web applications and AI-powered automation systems. Specializing in React, Next.js, Node.js, and AI workflow automation with n8n, Make.com, Retell AI, and Vapi.
Available for new projects
Bangladesh
Role
AIEngineer
Location
Bangladesh
About
Turning complex business workflows into software that works.
I build intelligent systems that automate business workflows and decision.
I'm Tahjib Hossain, a Full-Stack Developer with 3+ years of experience building scalable web applications and AI-powered automation systems.
I specialize in turning complex business workflows into clean, reliable software — from customer-facing platforms to behind-the-scenes automations that save teams hours every week. My core stack is React, Next.js, Node.js, and MongoDB, paired with n8n, Make.com, Retell AI, and Vapi for AI automation.
25+
Projects Delivered
20+
AI Agents
3+
Years Experience
Experience
Professional Journey & Milestones
Software Developer
CurrentAniya Network Solutions Inc.
Key Achievements
- Architected Dream Valley Realty — a real estate agent management platform with role-based dashboards for agents, brokers, and admins, including email/SMS notifications and analytics.
- Built KPKajan CRM with AI-powered email summarization using n8n, Gmail API, and OpenAI — auto-extracting key info from client emails and updating CRM records.
- Shipped 12+ voice AI agents using Vapi and Retell AI integrated with Twilio for automated appointment scheduling, lead qualification, and customer service.
- Developed AI video generation pipelines using Blotato, Veo3, and HeyGen to create personalized marketing content at scale for real estate listings and social campaigns.
Technologies Used
Full Stack Developer
Classic IT & Sky Mart Ltd
Key Achievements
- Architected PhoneCase BD — a full-stack custom phone case configurator using Next.js 14, Node.js, and MongoDB with real-time product customization, secure payment gateway, and order management.
- Led a team of 3 developers building a college management system for Gurudoyal Govt. College with RBAC, Bkash payment integration, attendance, and Education Board-style admission flow.
- Built a single-vendor e-commerce platform with filtering, sorting, and pagination handling 1000+ products using Redux Toolkit and Zustand for cart and wishlist.
- Led development of a POS system with barcode scanning, thermal printer support, and optimized DB queries for fast transaction processing.
Technologies Used
React Developer Intern
DuckSocket
Key Achievements
- Developed and maintained production-grade web applications using React.js and Redux Toolkit for centralized state management across complex component hierarchies.
- Integrated RESTful APIs with proper async/await error handling, loading states, and error boundaries to ensure smooth user experiences.
- Contributed to the full development lifecycle from requirements gathering to deployment on MERN stack projects.
Technologies Used
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Projects
Selected Works & Solutions
Web Project 1
Oct 21, 2023 - Oct 23, 2023
Web Project 2
Jun 24, 2023 - Aug 4, 2023
Web Project 3
Apr 6, 2023 - Jun 1, 2023
Web Project 4
Mar 28, 2023 - Apr 4, 2023
Web Project 5
Feb 14, 2023 - Feb 25, 2023
Web Project 6
Dec 14, 2022 - Dec 16, 2022
Web Project 7
Nov 16, 2022 - Nov 23, 2022
Skills
Technical Expertise
HTML
CSS
Tailwind CSS
JavaScript
TypeScript
React.js
Redux.js
Next.js
React Native
GSAP
Framer Motion
Node.js
Express.js
MongoDB
PostgreSQL
Prisma
Mongoose
Git
Docker
NGINX
n8n
Make.com
Retell AI
Vapi
OpenAI
Eleven Labs
Twilio
HeyGen
GoHighLevel
Python
Pandas
NumPy
Scikit-learn
Jupyter
Matplotlib
Contact
Let's Create Something Amazing
Ready to turn your ideas into intelligent solutions?
Whether it's a complex AI system, a sleek web app, or an automation workflow—let's discuss how I can help bring your vision to life.