All kind of coding solution
PERN Stack Development
PostgreSQL, Express, React, Node.js applications with high-performance architectures.
EXPLORE_MORESHOPIFY APPS & Theme Development
Custom Shopify Apps, bespoke theme architectures, and seamless API integrations.
EXPLORE_MOREWP PLUGINS & Theme Development
Advanced WordPress plugins, tailored headless structures, and complex cycle logic.
EXPLORE_MOREAI Agent Development
Vector-based workflows, Langchain dialogue systems, and semantic search integration.
EXPLORE_MOREDevOps
Infrastructure monitoring, high-concurrency tracking, and distributed developer environments.
EXPLORE_MORESelected_Works
Invigen AI
Automated inventory generation and management for Shopify merchants.
FraudGuard
Advanced order fraud detection and prevention system.
FramoAI
Automated UI generation tool mapped from structural code definitions.
REDX Delivery
Enterprise delivery management system with real-time logistics tracking.
Upsell & Cross Sell
Boost revenue with targeted recently viewed and frequently bought together recommendations.
StoreGrowth Sales Booster
All-in-one sales boosting toolkit designed specifically for WooCommerce stores.
RedX for WooCommerce
Seamless integration between RedX delivery management logistics and WooCommerce.
FraudGuard for WooCommerce
Automated fraud screening and risk evaluation system for WooCommerce orders.
Envira Gallery
Highly responsive and optimized drag-and-drop gallery builder for WordPress.
Chat PDF RAG
Vector-based document interrogation system using LangChain and Pinecone.
TalkTube RAG
Semantic search and dialogue system for video transcript data.
Woonext
Headless e-commerce starter template built with Next.js and GraphQL.
Md. Mehedi Hasan
Full-Stack Developer
Started my career as a WordPress developer since 2013 and evolved into a full-stack developer building, maintaining, and scaling web applications across Node.js, React, Remix, frontend, backend, and infrastructure layers. Strong focus on API-driven architecture, system reliability, and performance optimization rather than framework-dependent development.
Proficient in PostgreSQL with solid understanding of schema design, indexing, and query performance. Actively working with AI-powered systems using OpenAI APIs and LangChain for debugging, automation, and validation. Comfortable with Docker, CI/CD pipelines, GitHub Actions, and Linux environments for production-ready deployments.
Founder & Developer
Invizo, Dhaka
- —Built scalable SaaS applications for Shopify using React, Node.js, Express, and PostgreSQL
- —Developed 10+ full-stack applications with focus on performance and user experience
- —Implemented headless eCommerce solutions leveraging Next.js and WordPress
- —Utilized LangChain.js for RAG projects enhancing intelligent data retrieval
Senior Web Developer
Toptal
- —Developed scalable, high-quality web applications for global clients
- —Architected clean back-end systems using modern PHP and JavaScript frameworks
- —Managed full development lifecycle from planning to deployment
Full-Stack Developer
AwesomeMotive
- —Enhanced Envira gallery plugin performance and user interface
- —Collaborated with design teams to implement Figma specs into React-based applications
- —Integrated third-party APIs to extend custom web application functionality
React JS & Senior WordPress Developer
LendEDU, United States
- —Built scalable Gutenberg blocks from Figma using React + REST API
- —Maintained high code quality through PR reviews (200+ merged)
- —Ensured reliability with end-to-end testing (Cypress, Playwright)
Senior Web Developer
Comment.org
- —Built custom payment plugins for Stripe and WooCommerce Subscriptions
- —Developed tailored add-ons for WooCommerce Memberships
- —Maintained, updated, and optimized existing plugins across the platform
See My Client Feedback
"I hire this excellent fellow through Toptal. He was exceptional and maintained the high standards that Toptal is known for. He was always available and extremely responsive and effective. I would hire him again as he successfully dealt with my WooCommerce, Stripe and WordPress plugins. If he was my Uber driver — 5 stars."
"Mehedi is hardworking, intelligent, and most importantly, kind. Throughout the year-plus that I worked with him, he was always eager to learn, flexible, and consistently professional. He tackles all assignments with dedication and fully commits himself to finding solutions. It was an absolute pleasure working with him!"
"Mehedi is an exceptional Shopify app developer. He delivers clean, scalable code, understands Shopify APIs deeply, and builds custom apps that integrate seamlessly with themes. Highly reliable and skilled."
"Mehedi was super helpful in troubleshooting a configuration issue I had with a custom Shopify app. Would definitely hire him again if I needed some help!"
"Great work and Experience with mehedi. Will work with him again. Great support and enhancement of ideas. Thank you."