Web3 & Blockchain
Decentralized applications and blockchain-based systems with a focus on smart contracts and reliable Web3 integrations.
Solidity • Smart Contracts • DApps • DeFi • Web3 APIs
Senior Blockchain & Full-Stack Engineer
Mehrdad
Seifi
Building Web3, Full-Stack & AI-Powered Systems.
I design and build scalable web applications, decentralized products, backend systems and AI-powered solutions — from architecture and smart contracts to production-ready interfaces.
About Me
Engineering
Ideas into Systems.
I'm Mehrdad Seifi, a Blockchain & Full-Stack Engineer focused on building scalable digital systems across Web3, backend infrastructure, AI and modern web applications. I work across the stack — from architecture and APIs to smart contracts, frontend interfaces and automation — turning complex ideas into reliable, production-ready products.
More About Me5+Years Experience
20+Completed Projects
10+Happy Clients
“Good design and clean code are not luxury, they are essential.”
— Mehrdad SeifiExpertise
What I Build
I work across Web3, full-stack engineering, AI and backend systems — combining product thinking with technical depth.
Full-Stack Engineering
Scalable web applications built across the frontend and backend with modern, production-ready technologies.
Next.js • React • TypeScript • Node.js • REST APIs • DatabasesAI & Automation
AI-powered applications and automated workflows designed to reduce manual work and create smarter digital experiences.
LLMs • AI Applications • n8n • Bots • AutomationBackend & Infrastructure
Robust backend systems and infrastructure focused on performance, scalability and reliable deployment.
Python • FastAPI • PostgreSQL • Redis • Docker • APIsServices
What I Do
I offer a range of services to help bring your ideas to life. From web development to UI/UX design and digital solutions.
Web Development
Modern, fast and scalable web applications using Next.js, React, Node.js and more.
UI/UX Design
Clean, modern and user-focused interfaces that make an impact.
Digital Products
From concept to launch, I build digital products that solve real problems.
Consulting
Technical consulting for startups and businesses looking to grow.
Selected Works
My Portfolio
A selection of projects I've worked on. Each one a step forward in the journey.
Experience
Building Systems.
Growing Through Technology.
A career focused on building modern software systems across Blockchain, Web3, Full-Stack Engineering, Backend Development and Automation.
Blockchain & Full-Stack Developer
Freelance / Remote
2018 — Present
Designing and developing decentralized applications, smart contracts and full-stack Web3 products. Working across blockchain architecture, Solidity development and modern frontend/backend technologies to turn ideas into production-ready digital systems.
DApps • Solidity • React • Next.js • Node.js • TypeScript • Web3 • DeFiFull-Stack Developer
Remote / Various Projects
2020
Built and maintained web applications across the frontend and backend, contributing to the complete software development lifecycle from implementation and API integration to databases, testing and deployment.
React • Node.js • Python • PHP • PostgreSQL • REST APIs • Tailwind CSSData Analyst Intern
Remote / International Project
2020
Worked with structured datasets and analytical workflows, using SQL and Python to process data, automate repetitive tasks and generate insights for business-oriented decision making.
SQL • PostgreSQL • Python • Data Processing • Automation • Data AnalysisSoftware Engineering Intern
Tech Startup — Tehran, Iran
2021
Supported software development activities across frontend, backend and scripting environments while gaining practical experience in agile development, version control and automation.
JavaScript • TypeScript • MQL • PHP • Python • Version Control • AutomationTestimonials
What People
Say About My Work.
A few words from people I've worked with on real-world products and projects.
“Mehrdad is a talented developer with a great sense of design and problem solving. He delivered our project on time and exceeded expectations.”
Ali RahimiFounder, Tizz
Services
Turning Ideas.
Into Real Products.
From early-stage concepts to production-ready systems, I help businesses and startups build reliable digital products across Web3, Full-Stack Engineering, AI and Backend Development.
Full-Stack Development
Modern, scalable web applications built from frontend to backend with a focus on performance, maintainability and user experience.
Next.js • React • TypeScript • Node.js • REST APIs • PostgreSQLBlockchain & Web3
Designing and developing blockchain-based products including smart contracts, DApps, tokens, DeFi platforms and Web3 integrations.
Solidity • Smart Contracts • DApps • DeFi • Web3 • Token DevelopmentAI & Automation
Building AI-powered applications and intelligent automation workflows that integrate LLMs and modern AI technologies into real-world products.
LLMs • AI Agents • OpenAI • Gemini • Python • n8n • AutomationBackend & Systems
Developing reliable backend services, APIs and data-driven systems designed for scalability, performance and long-term maintainability.
Python • FastAPI • Node.js • PostgreSQL • Redis • Docker • APIsGet In Touch
Let’s Build
Something Great.
Have a project in mind, need help bringing an idea to life, or want to discuss a technical challenge? I’d love to hear from you.