Henry-Damian Melchizedek Chinomnso
I am a results-driven backend developer specializing in PHP, Laravel, Yii2, and RESTful API engineering.
About
I am a results-driven backend developer specializing in PHP, Laravel, Yii2, and RESTful API engineering. I enjoy designing scalable systems, secure authentication workflows, multi-tenant architectures, payment integrations, and real-time messaging solutions. My experience includes building platforms for trading, e-commerce, healthcare, digital signage, and live streaming, with a strong focus on maintainable architecture and reliable performance.
I am comfortable working across application development, databases, containerized deployments, background processing, and third-party integrations. I have built vendor management APIs, Paystack payment flows, WebSocket-powered features, and asynchronous notification systems, while collaborating effectively in remote teams. I bring a friendly, analytical, and quality-focused approach to solving technical problems and continuously expanding my skills.
- 1 year's experience
- Joined July 2025
Industry experience
- Software & Internet
- Computers & Electronics
- Financial Services
- Retail
- Healthcare
- Media & Entertainment
- Telecommunications
Work experience· 7 roles
Contributed to backend development of a white-label, multi-tenant SaaS trading platform using Laravel 11, Sanctum, Redis, Pusher, and Reverb. Worked on isolated per-tenant data environments using global-scope tenancy architecture. Resolved an admin user deletion 404 bug caused by route model binding conflicts with the BelongsToCompany global scope by implementing manual scope-free lookup and cross-tenant 403 protection. Also built an authenticated asset categories endpoint using MySQL aggregation queries to support dynamic trading interface navigation.
Architected and delivered the PHP/Yii2 backend for a multi-vendor food and fashion marketplace serving Canadian and Nigerian markets. Configured a Docker environment with Apache, MariaDB, Redis, Memcached, cron scheduling, and Traefik. Built 13 vendor REST API controllers covering product variants, add-ons, coupons, orders, bank details, withdrawals, transactions, subscriptions, and store management. Engineered asynchronous SMS and WhatsApp order notifications using Termii API and a cron-processed database queue.
Contributed to a multi-tenant digital signage and content management platform for enterprise clients across multiple regions. Designed and implemented a secure password reset and OTP authentication system using pure PHP and SMTP email integration, handling more than 200 verification requests weekly. Built dashboard functionality for user activity tracking, website analytics monitoring, and system reporting to improve administrative visibility and operational decision-making.
Education
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