Backend Engineer - Fintech & E-commerce Systems

Rupendra Chauhan

Envelope *************@*****.*** MOBILE +91-789******* Map-marker Alwar, Rajasthan LINKEDIN linkedin.com/in/rupendraalwar Github github.com/Rupendra-Chauhan PROFESSIONAL SUMMARY

Backend Engineer with 3+ years of experience building scalable fintech and e-commerce systems using Node.js and Laravel. Designed high-performance REST APIs serving thousands of users, improved system throughput by 40%, and optimized payment workflows. Strong in system design, and production-grade backend systems on AWS. TECHNICAL EXPERTISE

Languages: JavaScript (Node.js), PHP, SQL

Frameworks: Express.js, Laravel

Databases: MongoDB, MySQL, Redis

Cloud/DevOps: AWS (EC2, S3), Nginx, Apache, Git, CI/CD Core Concepts: System Design, Microservices, REST APIs, JWT Auth, Caching, Payment Integration PROFESSIONAL EXPERIENCE

Associate Backend Developer Apr 2023 Present

IMG Global Infotech Pvt. Ltd. Jaipur/Remote

• Designed and deployed 5+ scalable backend systems using Node.js and Laravel, supporting high-concurrency workloads.

• Integrated and optimized payment workflows (Razorpay, PayPal), reducing checkout drop-offs by 15%.

• Improved system throughput by 40% by optimizing database queries and implementing Redis-based caching.

• Built production-grade RESTful APIs with proper validation, versioning, and error handling.

• Secured fintech applications using JWT authentication and Role-Based Access Control (RBAC).

• Managed AWS infrastructure (EC2, S3), ensuring high availability and automated backups. PHP Developer Intern Jan 2023 Mar 2023

IMG Global Infotech Pvt. Ltd.

• Built responsive web features using HTML, CSS, JavaScript, and AJAX. PHP Developer Trainee Nov 2022 Dec 2022

IMG Global Infotech Pvt. Ltd.

• Developed UI components and improved frontend interactivity. KEY PROJECTS

Fintech Market (Live) Node.js, TypeScript, MongoDB, AWS Link

• Built scalable REST APIs for loan and credit card processing with real-time eligibility checks.

• Designed partner-based lead distribution system with optimized matching logic.

• Developed admin APIs for analytics, commission tracking, and reporting dashboards. Multi-Vendor E-Commerce Engine Laravel, MySQL, AWS

• Built modular APIs for vendor onboarding, product catalog, and order management.

• Optimized handling of large product catalogs (>10k SKUs) with efficient query design.

• Integrated tax calculation and shipping APIs for automated order processing. Macrame (Live) Laravel, MySQL Link

• Developed complete backend system including inventory, orders, and user management.

• Integrated SendGrid for transactional emails and customer engagement workflows. EDUCATION

Bachelor of Arts 2020

Indira Gandhi National Open University

B.Tech in Computer Science (Dropout) 2017

Rajasthan Technical University

CERTIFICATIONS

• SQL Certification HackerRank (2024) • Advanced Laravel LinkedIn (2023)

• RESTful APIs in Laravel LinkedIn (2023) • Node.js Design Patterns (Self-Study)

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