Rana Saha

Senior Backend Engineer with 5 years designing, building, and scaling REST APIs and backend systems using PHP, Laravel, and Node.js. Skilled in system design, software architecture, and database optimization — improved API performance via Redis caching and query optimization, secured systems with JWT/OAuth2, and integrated 10+ third-party services (payments, SMS, logistics). Led code review, release management, and mentoring for a backend team in an Agile, Git-based environment.

Senior Software Engineer - Tech Exactly

(2024-12 - 2026-06)

• Architected the backend for web and mobile platforms using Laravel and Node.js, replacing a legacy monolith with a scalable, service-based (microservices) architecture.
• Reduced API response times by 30% by introducing Redis caching and rewriting slow MySQL queries — the leading driver of latency complaints prior to the change.
• Built and hardened production REST APIs with JWT-based authentication, closing security gaps flagged in prior audits.
• Led code review and deployment process for the backend engineering team, setting release standards that improved consistency and reduced post-deploy defects.

Backend Developer - Webart Technology Pvt. Ltd.

(2023-02 - 2024-12)

• Delivered enterprise-grade Laravel applications and REST APIs for external business clients, from requirements gathering through production support.
• Implemented 10+ third-party integrations — payment gateways, SMS providers, logistics APIs — each with independent authentication, retry logic, and error handling.
• Improved SQL query performance by 40% through targeted indexing and query rewrites on high-traffic MySQL tables.
• Designed a reusable service-layer architecture following SOLID principles, reducing duplicate code across multiple client projects.

Junior Backend Developer - Fusion Techlab

(2021-06 - 2023-02)

• Built backend modules and REST APIs in PHP/Laravel, and designed relational database schemas for internal tools from scratch.
• Supported AWS deployment and production maintenance, gaining early hands-on ownership of live infrastructure.

B.Tech - Electronics & Communication Engineering - Techno India Banipur, Kolkata (2014)