Web application that allows users to print Multichain collectibles(Solana and Ethereum) in their wallets. It also allows them to mint and print their own arts off chain.
Live project (opens in a new tab)Abdulmumin AlhassanOverview
Alhaji — Software Engineer
I build web, mobile, backend and AI stuff — and apparently, underwater portfolios.
Selected work
8 projects · tap any row to open it
Discover a dynamic dashboard showcasing market trends and account insights for a reflection token. Dive into interactive charts, a user-friendly minting page, seamless buying options, and a comprehensive transaction history log.
Live project (opens in a new tab)Discover a crypto project's website, showcasing a DApp dashboard. Experience real-time market data and user insights, blending blockchain technology with a user-friendly interface.
Live project (opens in a new tab)Explore a Crypto Enthusiast's website featuring a Reflection token DApp. Dive into NFT minting, market data, account insights, and an array of exciting features, making crypto more accessible and fun!
Live project (opens in a new tab)Explore a user-friendly Ethereum-based NFT minting Dapp, complete with a captivating landing page. Effortlessly mint NFTs and conveniently manage your growing collection.
Live project (opens in a new tab)Discover a Crypto Project's website featuring a Data DApp that showcases active Telegram channels in a thrilling contest for users holding BBB tokens in their wallets. Additionally, explore a Staking DApp to amplify your earnings.
Discover a Crypto Project's website featuring a user-friendly Generic Staking DApp on the Binance Smart Chain. Stake your assets with confidence, knowing the fixed APY and staking duration.
Explore a versatile Staking DApp on the Ethereum Network, offering three distinct staking pools, each with its unique reward system, APY, and staking mechanism. Maximize your earnings with flexibility.
Live project (opens in a new tab)Experience
6 roles · 2015 — now
- 15 December 2023 - 2025
Dehub.io
Web Developer
- Architected and implemented the React frontend and Node.js/Express backend, then led the migration to Next.js and NestJS for server-side rendering, improved modularity, and enhanced maintainability.
- Developed, tested, and deployed upgradeable Solidity contracts on Ethereum, Arbitrum, Polygon, Base, and BSC — including proxy patterns, staking modules, and access-control logic.
- Designed and deployed a Graph Protocol subgraph to index token events, transactions, and stream-contract metadata; synchronizing on-chain data with MongoDB to power real-time user-holding dashboards.
- Integrated Web3.js/Ethers.js and other libraries and helpers to enable wallet connections, on-chain reads/writes, and real-time event monitoring.
- Acted as lead developer — mentoring junior engineers, coordinating cross-functional sprints with designers and QA, and driving roadmap execution to meet aggressive launch timelines.
- Built WebSocket-based modules for live chat and notification streams, ensuring sub-100ms update delivery.
- 04 February 2024 - February 2025Contract
Sailboat Labs
Backend Developer
- Developed a Node.js script that reads company PDFs, extracts structured data, and automatically augments it with targeted online research and AI to generate key insights and a proper report.
- Engineered bots that let users generate custom stickers on ExpressionZ and deploy them directly to their Telegram account or Discord server.
- Assisted in integrating both chatbots into the main ExpressionZ web application — synchronizing sticker-management features across platforms.
- September 2022Part time
Ajian Labs
Fullstack Developer
- Spearheaded the overhaul of system architecture, implementing a robust and efficient framework using Nest.JS.
- Built user-focused interfaces using technologies like React.js, Next.js and ChakraUI.
- Actively collaborated with software engineers, product managers and designers contributing to effective development.
- Acted as the primary backend developer for a clothing shop app.
- September 2021Part time
10.8.8 Africa
Fullstack Developer
- Served as a secondary backend developer on spok.vc microservices architecture, refactoring REST endpoints and collaborating on the Vite + React frontend to deliver new features and performance improvements.
- Assisted in migrating the frontend to Next.js and rearchitecting the backend on structured Firebase; also ensured seamless integration with existing services.
- Worked in a cross-functional team using Jira for sprint planning, ticket tracking, and release management — ensuring clear communication and on-time delivery of features.
- 2018 - 2020Part time
Fivepoints
Developer
- 2015 - 2017Part time
Freelance
Frontend Web Designer and Graphics Designer
What I use
Anything with a count is on a project below — press it to find them
Languages
- JavaScript
- Typescript
- Solidity
- Python
- PHP
- Java
Technologies
- REST API
- Nest JS
- Redux Toolkit
Frameworks
- Tailwind CSS
- Jquery
- Three JS
Databases
- MySQL
- Firestore
Tools
- Git
- Github
- Firebase
- Photoshop
- Coreldraw
About
I'm a software engineer who likes building things. I work across web, mobile, backend, AI and blockchain, from interfaces and APIs to the systems that run behind them. I enjoy picking up a problem, figuring out how it should work, and building the whole thing. I also enjoy learning things!
- Name
- Abdulmumin Alhassan
- Role
- Software Engineer
Contact
Let’s build
something
Same portfolio, two other ways