NexaX (US) - Secure Cryptocurrency Exchange Platform
Overview
When I came to lead the NexaX project, the crypto space was buzzing with innovation, but also riddled with complexity, volatility, & trust issues. The client’s vision was to build a secure, user-friendly exchange that could serve both novice traders & seasoned crypto investors. My job was to translate that vision into a product that was fast, compliant, & intuitive.
We kicked off with a discovery sprint focused on user personas, regulatory requirements, & competitive analysis. I structured the backlog around core exchange features, wallets, order books, KYC, & real-time trading. Each sprint was a calculated step toward a platform that balanced speed with security.
Technologies
Given the sensitivity of crypto transactions & the need for real-time performance, we built NexaX on a robust, secure, & scalable stack:
Frontend: React.js with WebSocket integration for live market data
Backend: Go (Golang) for high-performance concurrency
Database: PostgreSQL, Redis for caching
Blockchain Integration: Web3.js, Ethereum, Binance Smart Chain APIs
Security: 2FA, biometric login, cold wallet storage, encrypted user data
Cloud Infrastructure: AWS (EKS, S3, CloudHSM), Docker, Kubernetes
Monitoring & Analytics: Prometheus, Grafana, Sentry
Product Tools: Jira, Figma, Confluence, Miro
Team
I led a specialised team of eight:
- 2 Frontend Developers
- 2 Backend Engineers
- 1 Blockchain Developer
- 1 UI/UX Designer
- 1 QA Engineer
- Product Owner (Myself)
I facilitated all Scrum ceremonies & worked closely with legal advisors & security consultants to ensure the platform met both user expectations & regulatory standards.
Challenges
Real-time accuracy: One of the biggest challenges was ensuring real-time trading accuracy. We had to build a matching engine that could handle thousands of transactions per second without lag. I worked with the backend team to optimise our concurrency model & stress-test the system under simulated load.
Regulatory adherence: Another challenge was regulatory compliance. We needed to implement KYC/AML workflows that were airtight but not intrusive. I collaborated with our legal advisor to integrate a third-party identity verification service & design a frictionless onboarding flow.
Secure wallets: A third challenge was wallet security. We implemented a hybrid wallet system, which were hot wallets for liquidity, cold wallets for storage, & built a secure withdrawal approval process to prevent unauthorised access.
Uniqueness
NexaX stood out for its blend of performance, transparency, & user empowerment:
- Real-time order book with advanced charting tools
- Multi-currency wallet with instant swap functionality
- Tiered trading fees based on volume & loyalty
- A “Learn & Earn” module to onboard new users into crypto safely
Conclusion
Six sprints later, we launched NexaX to a closed beta of 2,000 users. Within the first month, the platform processed over $5M in trading volume with zero security incidents & 99.89% uptime.
In crypto, trust is the real currency. By combining agile delivery with airtight security & user-first design, we built NexaX as a gateway to the future of finance.
Project name : NexaX
Role : Product Owner
Industry : Cryptocurrency Exchange
Methodology : scrum
