American Football NFT Fan Engagement

A production NFT marketplace for verifiable sports collectibles, physical rewards, and low-friction blockchain adoption

Client: NuArca Labs

HK Sevens is a production Web3 sports fan-engagement platform launched for the 2022 Cathay Pacific/HSBC Hong Kong Sevens . It enabled fans to collect and trade team-card and mascot NFTs, participate in stadium QR experiences, and bid for digital collectibles linked to match-used jerseys and a game ball ( public launch ). Built with Angular, Node.js, Solidity, and Microsoft Azure, the platform combined credit-card onboarding with blockchain ownership, auctions, trading, and physical-item redemption. Its engineering addressed research-relevant problems including concurrent ownership consistency, transaction recovery, EIP-1559 fee management, and hiding blockchain complexity from mainstream users. Verified Smart Contract: View HK7S ERC-721 contract on Polygon Blockscout NFT Collection: Explore Hong Kong Sevens Digital Collectibles on OpenSea

Tech: Angular, Node.js, Solidity, Microsoft Azure, EVM Smart Contracts, NFT Infrastructure, EIP-1559, Web3 Wallets, Multi-Chain Architecture

Experience

Senior Software Engineer · BrainStation 23 PLC.

March 2022 - Present · Dhaka, Bangladesh

  • Designed crypto-to-fiat interoperability layer using ISO 4217-aligned currency normalization for internal on/off-ramp calculations and ISO 20022 messaging adapters for banking and payment-system integration.
  • Collaborated with the University of Stavanger on a Norwegian Research Council–funded (Grant No. 308909) research focused on B2B/B2G healthcare data exchange policy and governance.
  • Led development of a Web3 hotel-booking dApp with NFT reservations, coordinating frontend/backend integration, mentoring the BA on stablecoin payments, and enabling ~25% broader reach via seamless booking/resale across major marketplaces via ERC-721 standard.
  • Built a multi-tenant e-commerce PoC on ICP integrating Shopify with Web3 shops, boosting efficiency by ~35%, scaling to hundreds of vendors, and co-developing a €250K+ fundraising prototype with a European partner.
  • Conducted domain/requirement analysis with ICONIX, designed UML diagrams, and prepared SoW, WBS, and ToR to support sales in accurate client budget estimation.

https://brainstation-23.com/?1

Instructor | Teaching & Mentorship · Ostad | EdTech Platform

December 2025 - Present · Dhaka, Bangladesh

  • As an instructor, Md. Ariful Islam conducting 5 batches with 695+ students, brings clarity, structure, and problem-solving depth to his teaching. He has solved countless real-world engineering challenges involving application architecture, API design, data modeling, and frontend-backend integration. His teaching approach focuses on how MERN is used in real software teams, helping students write clean code, think like engineers, and build job-ready projects with confidence.

https://ostad.app/instructor/255870

Junior Software Engineer · Cloud Height Technology LTD. (CHTL)

January 2022 - April 2022 · Chittagong, Bangladesh

  • Backend Engineer

https://cloud-height.com/

Associate Software Engineer · Robust Research and Development LTD. (RRAD)

December 2020 - December 2021 · Dhaka, Bangladesh

  • Developed the Bangladesh Customs Info mobile application, which has an installation range of 5K-10K based on Play Store reports, to streamline import/export compliance queries by product HS Code.
  • Engineered the Customs Bond Commissionerate Import Entitlement System, reducing manual paperwork and improving processing time from 5 days to 2 hours per application.

https://rrad.com.bd/

IT Intern · Export Import Bank of Bangladesh PLC. (EXIM)

October 2020 - December 2020 · Dhaka, Bangladesh

  • Assisted in data center operations ensuring uptime for 10+ enterprise banking services while collaborating with the corporate banking division to gain hands-on financial operations experience.

https://www.eximbankbd.com/

Skills

Languages & Systems Programming

TypeScript (JavaScript), Rust, Solidity, Python

Backend & Distributed Systems

Node.js, NestJS, Django, Microservices, Event-Driven Architecture (EDA), Distributed Systems, Message Brokers, REST, GraphQL, WebSocket, IPN, Idempotency, Reconciliation, Retry & Backpressure, Circuit Breaker

Software Architecture & Reliability

Object-Oriented Design (OOD), Domain-Driven Design (DDD), SOLID Principles, Design Patterns, Enterprise Integration Patterns, ICONIX, UML, Rule Engines, Fault Tolerance, Multi-Source Event Processing

Data, AI & Agentic Systems

PostgreSQL, MongoDB, Redis, OpenSearch K-NN, Vector Search, RAG, LangChain, MCP, LLM-Orchestrated Workflows, Fraud & Anomaly Feature Pipelines, AI-DLC

Financial & Regulated Systems

ISO 4217, ISO 20022, Financial Data Exchange (FDX), KYC/AML Workflows, On-Ramp & Off-Ramp Systems, Payment & Treasury Settlement, Proof-of-Reserve, Financial Reconciliation, Audit-Grade Traceability

Security, Web3 & Digital Asset Infrastructure

EVM, Solidity Smart Contracts, Rust, Hyperledger Fabric, Stablecoin Payment Rails, Chainlink Oracles, The Graph, Blockchain Forensics, Upgradeable Smart Contracts, DAO Governance, Zero-Knowledge Proofs (ZKP)

Cloud, DevOps & Observability

Docker, Docker Compose, GitHub Actions, Kong API Gateway, Kong Lua Plugins, OpenTelemetry, Prometheus, Grafana, Loki, Distributed Tracing, Structured Logging, PM2