Ahsan Ahmed

Developed complete payment workflows for global and regional gateways, handling webhook processing, transaction states, ledger management, and secure financial reconciliation flows. Designed and developed multi-tenant platforms including invoice management, education, e-commerce, pharmacy, and restaurant POS solutions with role management, business automation, third-party integrations, and cloud-b

Designed a three-server Web, API, and Worker architecture with automated CI/CD pipelines, reducing production deployment time by 80%. Built asynchronous data synchronization pipelines processing 1M+ hotel rate updates daily while automating Google Hotel Search pricing feeds. Managed end-to-end payment processing for Malaysian gateways (TNG, FPX, CHIP), including webhooks, reconciliation, and relia

Designed a greenfield platform with a decoupled REST API backend for React/Next.js applications and a dedicated Laravel admin portal for internal operations. Developed chunked file upload services supporting multi-GB transfers with resumable uploads, optimized storage organization, and efficient file management. Implemented guest access workflows with API rate limiting, owner approval, and duplica

Developed and optimized high-traffic B2B and B2C OTA services, reducing multi-vendor GDS synchronization latency from 10s to 200ms through database optimization and performance tuning. Built multi-tenant agency wallet systems, payment reconciliation, and ticket lifecycle management, ensuring reliable financial processing across booking operations. Developed asynchronous reporting pipelines over pr

Optimized database transactions and application workflows to support high concurrency online examinations with reliable performance during peak student activity. Developed secure REST APIs with role-based access control (RBAC) for mobile applications, implementing structured authorization and scalable backend services.

Developed logistics, payroll, inventory, and e-commerce modules for a multi-tenant ERP platform, maintaining clean business logic and modular application architecture. Improved POS transaction performance by resolving database locking issues, optimizing queries, and restructuring legacy relational models, increasing application responsiveness by 40%.

Senior Software Engineer with 6+ years of experience specializing in Laravel backend development, with hands-on experience in Node.js, React/Next.js, Docker, Redis, Nginx, CI/CD, and cloud infrastructure. Successfully delivered 15+ production applications across FinTech, Online Travel (OTA), Multi-Tenant SaaS, ERP, POS, Logistics, E-Commerce, Pharmacy, Restaurant, EdTech, and Business Automation d

Activities and societies: Developed algorithmic components and data structure implementations using C++ and Java during academic lab evaluations.

Graduated with a B.Sc. in Computer Science & Engineering. Final project involved building a social media management platform using raw PHP, MySQL, jQuery, and AJAX.