FULL-STACK ENGINEER · BLOCKCHAIN & FINTECH INFRASTRUCTURE
Hi I'm Nawab
Software Engineer
Full-stack engineer with 6+ years building fintech and blockchain systems that move real money. Lead engineer of a 16-microservice platform serving 350,000+ users, former co-founder & CTO of a stablecoin card startup, and founder of an agency that has shipped a crypto exchange and an MPC wallet. I work mainly in TypeScript (NestJS, Next.js) and Go.
Hello
I focus on building secure, scalable architectures
with blockchain expertise to turn complex ideas
into reliable products
Tech Stack
Skills & Expertise
Languages
Backend
Frontend & Mobile
Data & Messaging
Blockchain & Web3
DevOps & Cloud
Security & Testing
AI / ML
My Process
Here's how I work
Discover
Understanding requirements, business goals, and technical constraints through research.
Design
Architecting scalable solutions and designing intuitive user experiences.
Develop & Test
Building robust, secure code with comprehensive testing and quality assurance.
Deliver
Deploying to production with monitoring, support, and continuous improvement.
Selected Works
Services
What I Can Build for You
End-to-end blockchain development services to power your next-generation fintech platform
Payment Gateway Development
Build secure cryptocurrency payment solutions that enable seamless transactions for your business. Accept multiple cryptocurrencies with real-time conversion and settlement.
Custom quote
Learn moreCrypto Exchange Development
Launch your own cryptocurrency exchange platform with advanced trading features, liquidity management, and enterprise-grade security protocols.
Custom quote
Learn moreWallet App Development
Create intuitive and secure cryptocurrency wallets for web and mobile platforms. Support for multiple blockchains with seamless user experience.
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Learn moreMy Journey
Building & Scaling since 2016
2016
2019
2020
2021
2022
2025
Built First Website
Started the coding journey
Freelance Career
Started as a freelance web developer
GcBuying
Joined GcBuying, a gift card & crypto trading fintech, as a remote developer. Began a B.Sc. in Computer Science & Engineering at Begum Rokeya University.
Founded Mithium
Founded Multicone (now Mithium), a five-person agency building web, mobile & blockchain products. Built the real-time trading engine and custodial wallet for KnightBridge at Gamespace Inc.
Blockchain Olympiad Winner
Won Blockchain Olympiad Bangladesh 2022 (Edutech) for dEDU, a decentralized education system. Went full-time on GcBuying as a blockchain & software engineer.
Graduation & Web3 Products
Completed the B.Sc. in CSE. Shipped a five-chain P2P escrow platform and AlleleGroup, an ERC-998 composable NFT marketplace for genomic research data.
Payriz & MITHEX
Co-founded Payriz, a stablecoin wallet & virtual card platform, as CTO. Started MITHEX, a centralized exchange on a Go matching engine with 20+ blockchains.
Lead Engineer & Founder
Lead Full-Stack Engineer at GcBuying: 16 NestJS microservices, a double-entry ledger, and MPC custody serving 350,000+ users. Founder & Lead Engineer at Mithium.
10+
Years Coding
6+
Years Professional
350K+
Users Served
20+
Blockchains
Let's Make It Happen
Ready to build scalable web apps, blockchain solutions, or fintech systems? Let's collaborate and create something amazing together.
Or reach out directly