Senior Backend Engineer - Distributed Systems

Experienced Software Engineer with *+ YoE in design, development, testing and implementation of various Internet-based applications. Experienced with all stages of the development cycle for dynamic web projects. B.Sc. in Computer Science Skilled in Backend Engineering Proficient in MERN, PHP, Laravel, Docker, Git WORK EXPERIENCE

Senior Backend Engineer @ eBrandz January 2024 - Present

• Built the application from scratch, integrating Logto (OAuth 2.0) and implementing Role-Based Access Control RBAC for secure authentication, authorization, and fine-grained access control.

• Developed custom middleware for token validation and designed scalable RESTful APIs to ensure secure, maintainable, and efficient backend architecture.

• Engineered SEO Audit, Competitor Analysis modules, and a dynamic Proposal Tool with pricing logic, third-party API integration, and configurable discount rules.

• Optimized application performance using browser caching strategies (Cache-Control headers) to reduce redundant API calls and improve user experience.

• Tech Stack: Node, Laravel, MongoDB, MySql, Docker, Pheanstalk, Git. Senior Backend Engineer @ STS September 2022 – November 2023

• Built a scalable shipment tracking system integrating multiple logistics partner APIs, executing automated tracking every 30 minutes and improving tracking accuracy by 80%.

• Developed an NDR (Non-Delivery Report) management system leveraging real-time tracking data, reducing manual workload for operations team and increasing efficiency by 30%.

• Optimized MySQL queries and backend performance in OMS (Order Management System), reducing response time and improving system speed by up to 5x.

• Implemented queue-based processing for handling asynchronous tasks, improving system reliability and performance under high load.

• Identified and resolved critical backend issues, enhancing overall system stability and user experience.

• Tech Stack: Node, Laravel, MongoDB, MySql, React, Docker, AWS Queue, Git. Full Stack Developer @ Pagentra Infosec November 2021 – August 2022

• Developed a WebShell automation feature with custom batch scripts, reducing manual server operations effort by ~40% and improving task execution speed.

• Built a Cron Job Monitoring System tracking 100+ scheduled jobs, enabling real-time status visibility and reducing issue detection time by 60%.

• Engineered a Website Vulnerability Reporting module used by multiple client websites, allowing report generation, download, and management—contributing to an estimated 15–20% increase in customer conversions.

• Implemented an SSL Certificate Expiry Notification system with automated Email and SMS alerts, preventing potential downtime and ensuring 100% on-time renewal compliance across monitored domains.

• Tech Stack: PHP, Laravel, JavaScript, MySql, Shell Script, Batch Script, Git. Software Engineer @ Geecon Global December 2018 – October 2021

• Tech Stack: PHP, Codeigniter, JavaScript, MySql, Git. EDUCATION

Shankar Narayan College Bachelors in Computer Science 2011 - 2014 VIVEK MANDAL vivekmandal.in

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