You will get Backend developer | Node JS | Nest JS | MongoDB | MySQL | PostgreSQL
Project details
Are you in need of a scalable, high-performance backend for your web or mobile application? I specialize in Node.js and NestJS development, delivering custom APIs and seamless database integrations to power your applications efficiently.
With over 5+ years of experience, I build robust RESTful APIs and GraphQL APIs designed for performance, security, and scalability. My solutions are tailored to your business needs, whether it's handling complex backend workflows, managing large datasets, or ensuring fast response times.
I work extensively with databases like MySQL, PostgreSQL, and MongoDB, creating efficient data architectures that can scale your application.
From secure authentication systems (JWT, OAuth) to cloud deployment on platforms like AWS, Docker, and Kubernetes, I handle every aspect of backend development. Additionally, I optimize performance through caching and load balancing to ensure your systems can handle high traffic loads.
Let’s build a strong, scalable foundation for your next project using Node.js and NestJS, ensuring reliable performance, seamless API integration, and efficient database management for all your backend services.
With over 5+ years of experience, I build robust RESTful APIs and GraphQL APIs designed for performance, security, and scalability. My solutions are tailored to your business needs, whether it's handling complex backend workflows, managing large datasets, or ensuring fast response times.
I work extensively with databases like MySQL, PostgreSQL, and MongoDB, creating efficient data architectures that can scale your application.
From secure authentication systems (JWT, OAuth) to cloud deployment on platforms like AWS, Docker, and Kubernetes, I handle every aspect of backend development. Additionally, I optimize performance through caching and load balancing to ensure your systems can handle high traffic loads.
Let’s build a strong, scalable foundation for your next project using Node.js and NestJS, ensuring reliable performance, seamless API integration, and efficient database management for all your backend services.
Programming Languages
JavaScript, TypeScriptCoding Expertise
Performance Optimization, Security, DesignWhat's included
| Service Tiers |
Starter
$10
|
Standard
$150
|
Advanced
$500
|
|---|---|---|---|
| Delivery Time | 7 days | 20 days | 40 days |
Number of Revisions | 5 | Unlimited | Unlimited |
Number of Pages | 5 | 10 | 20 |
Design Customization | - | - | |
Content Upload | |||
Responsive Design | - | - | |
Source Code |
Frequently asked questions
About Zain
Senior Full Stack Developer : MERN | BlockChain | Twilio | Vapi.ai
Rawalpindi, Pakistan - 9:30 pm local time
🕒 5+ years of professional experience
✅ Production-ready SaaS, MVPs & Web Applications
✅ Blockchain & Smart Contract Specialist (Ethereum)
✅ Trusted by startups, founders & agencies worldwide
📞 Twilio API Expert – SMS, Voice, WhatsApp, OTP, IVR & real-time communications
💨 Vape.ai Solutions – AI-powered vape SaaS, compliance, automation & eCommerce systems
Hi! I’m Zain Ul Abdeen, a Senior Full Stack & Blockchain Developer with over 5 years of hands-on experience building scalable web applications, SaaS platforms, and decentralized systems for startups, growing businesses, and development agencies.
I work as a hands-on technical partner, supporting projects across the full development lifecycle—from idea validation and system architecture to development, deployment, and long-term support. My focus is not just writing code, but delivering business-ready, secure, and scalable solutions.
I genuinely enjoy solving complex problems and turning ideas into high-performing digital products. This mindset has helped me consistently deliver quality work, maintain long-term client relationships, and build systems that scale beyond the MVP stage.
🔹 WHAT I SPECIALIZE IN
Full-Stack Web Development
Node.js, React.js, Next.js, NestJS, REST APIs, GraphQL APIs, SaaS platforms, MVP development, server-side rendering (SSR), scalable system architecture
Blockchain Development
Ethereum, Solidity, Solana, Rust, Web3.js, smart contracts, dApps, NFT platforms, DeFi solutions
Communication & Payments
Twilio API (SMS, Voice, Chat), Stripe, PayPal, third-party API integrations
🔹 ACCOMPLISHMENTS & STRENGTHS
• Delivered end-to-end web and blockchain solutions for startups and businesses
• Strong experience scaling MVPs into production-ready systems
• Clean, maintainable, and well-documented codebases
• Full project ownership from planning to deployment
• Clear communication and reliable delivery timelines
• Long-term collaboration mindset, not short-term freelancing
🔹 SOFTWARE DEVELOPMENT SERVICES
• Full Stack Development (Frontend + Backend)
• Node.js & NestJS Backend Development
• React.js & Next.js Frontend Development
• SaaS Platforms & Startup MVPs
• REST & GraphQL API Development
• Blockchain & Smart Contract Development
• dApp Development (Ethereum & Solana)
• NFT Marketplaces & Token Systems
• DeFi Applications (staking, tokens, lending)
• Twilio API Integration
• Stripe & PayPal Payment Integration
• Cloud Deployment & Optimization (AWS)
🔹 TECH STACK
Front-End:
React.js, Next.js, JavaScript (ES6+), TypeScript, HTML5, CSS3, Tailwind CSS, Bootstrap
Back-End:
Node.js, Express.js, NestJS, REST APIs, GraphQL, server-side rendering
Databases:
MySQL, PostgreSQL, MongoDB, SQLite
Blockchain:
Ethereum, Solidity, Solana, Rust, Web3.js
Cloud & DevOps:
AWS (EC2, S3), Docker
APIs & Services:
Twilio, Stripe, PayPal, Moralis, Web3 APIs
Version Control:
Git, GitHub, GitLab
🔹 HOW I WORK
Requirement analysis and technical planning
Architecture design and clean code development
Testing, optimization, and security checks
Deployment and production readiness
Post-launch support and scaling
🔹 LET’S BUILD SOMETHING THAT LASTS
If you’re looking for a Full Stack Developer, Node.js Backend Expert, React / Next.js Developer, or a Blockchain Engineer who takes real ownership of your product, let’s talk.
I’m ready to help you build secure, scalable, and future-proof solutions.
🔹 ADDITIONAL EXPERTISE & KEYWORDS FOR BETTER PROJECT FIT
I have extensive experience working with startup founders, CTOs, and product managers to transform ideas into scalable, revenue-generating software products. Whether you are building a new MVP, scaling an existing SaaS platform, or integrating blockchain functionality into your web application, I bring both technical depth and business awareness to every engagement.
As a Full Stack Developer, I handle frontend development with React.js and Next.js, backend development with Node.js and NestJS, and API-driven architectures designed to support high traffic and long-term growth. I regularly implement secure authentication systems, role-based access control, payment workflows, and third-party integrations.
On the blockchain side, I design and develop Ethereum smart contracts using Solidity, integrate Web3.js, and build decentralized applications that connect seamlessly with modern web interfaces. I have worked on NFT platforms, token systems, and DeFi features with a strong focus on security, gas optimization, and maintainable contract architecture.
Clients value me for being reliable, proactive, and transparent. I communicate clearly, set realistic timelines, and focus on delivering measurable business value, not just code.
Steps for completing your project
After purchasing the project, send requirements so Zain can start the project.
Delivery time starts when Zain receives requirements from you.
Zain works on your project following the steps below.
Revisions may occur after the delivery date.
Project Planning and Initial Review
After receiving the requirements, I will analyze them and create a project plan, outlining the API endpoints, database structure, and features. I'll share the plan with you for review to ensure alignment before starting development.