Backend Developer - Node.js, NestJS, AWS

Girraj Nirwan

Backend Developer Node.js NestJS AWS Microservices CI/CD MongoDB PHP

Jaipur, Rajasthan, India +91-789******* **********@*****.*** linkedin.com/in/girraj-nirwan-837810152 PROFESSIONAL SUMMARY

Backend Developer with 8+ years of experience designing, developing, and maintaining scalable web applications and APIs using Node.js, NestJS, PHP, and Express.js. Experienced in building secure RESTful APIs, integrating Gemini AI and OpenAI

(ChatGPT API), implementing payment gateways, and optimizing databases using MongoDB, PostgreSQL, and MySQL. Skilled in designing microservices-based architectures, deploying applications on AWS, and building CI/CD pipelines using Jenkins. Strong expertise in enterprise application development, SaaS platforms, and high-performance backend architectures with a focus on scalability, security, and maintainability.

TECHNICAL SKILLS

Backend: Node.js, NestJS, PHP, Laravel, Yii, Yii2

Databases: MongoDB, PostgreSQL, MySQL

AI & Automation: Gemini AI Integration, OpenAI (ChatGPT API), Intelligent Workflow Automation API & Integrations: RESTful APIs, Twilio, Stripe, Razorpay, Cashfree, Google Maps API, In-App Purchase (IAP), Asana API, Bullhorn API

Tools & Concepts: API Integration, SaaS Development, Database Optimization, Enterprise App Development, Microservices Architecture

Cloud & DevOps: AWS, CI/CD (Jenkins), Git

Messaging & Caching: RabbitMQ, Redis

PROFESSIONAL EXPERIENCE

Backend Developer March 2022 – Present

Konstant Info Solutions Pvt. Ltd., Jaipur

● Developed scalable web applications and RESTful APIs using Node.js, NestJS, and PHP, supporting 5+ production applications.

● Integrated Gemini AI to build intelligent automation and AI-powered application features, reducing manual process time by 70%.

● Designed and optimized PostgreSQL and MySQL databases for high-performance enterprise solutions, improving query response time by 45%.

● Collaborated with frontend engineering teams to deliver end-to-end web applications for 50,000+ users.

● Implemented third-party APIs, payment gateways, and secure backend architectures for production systems processing 200,000+ transactions/month.

● Designed microservices-based architecture for key modules and deployed applications on AWS, setting up CI/CD pipelines using Jenkins for automated builds and releases. Technology Stack: Node.js, NestJS, PHP, PostgreSQL, MySQL, Gemini AI, AWS, Jenkins PHP Developer July 2018 – March 2022

Aryavrat Infotech Pvt. Ltd., Jaipur

● Developed and maintained dynamic web applications using PHP, Laravel, Yii, and Yii2 for 7+ enterprise clients.

● Built secure backend modules and RESTful APIs for enterprise applications, cutting development time by 40%.

● Designed and optimized MySQL databases, stored procedures, and complex SQL queries, improving performance by 50%.

● Integrated third-party APIs and payment gateways to extend platform functionality across 20+ products.

● Performed maintenance, debugging, and feature enhancements while following coding best practices, resolving 100+ production issues.

Technology Stack: PHP, Laravel, Yii, Yii2, MySQL, JavaScript, jQuery, AJAX PROJECT EXPERIENCE

Trex — NestJS, PostgreSQL, Gemini AI

● Developed scalable backend architecture and REST APIs using NestJS.

● Integrated Gemini AI to provide AI-powered features and intelligent content processing.

● Optimized PostgreSQL database performance for high-volume user interactions. KKM (kamdhenoo.com) — Node.js, EJS, MongoDB, Razorpay, Google Maps API

● Developed backend services for an agriculture marketplace platform connecting farmers, buyers, and service providers.

● Integrated Razorpay payment gateway and Google Maps API. HelixAndGene (helixandgene.com) — Node.js, MongoDB, Gemini AI

● Developed backend modules for a health and fitness management platform.

● Integrated Gemini AI to generate intelligent health insights and built secure, optimized MongoDB data pipelines. Oyrra (oyraa.com) — Node.js, Next.js, MongoDB, Twilio, Stripe

● Developed scalable backend services and RESTful APIs; integrated Twilio for communication and Stripe for payments.

● Collaborated with the Next.js frontend team and optimized MongoDB for high-performance operations. Hero — Node.js, Next.js, MongoDB, Stripe

● Developed backend services and REST APIs for an on-demand bodyguard platform with secure authentication and Stripe payments.

Additional Projects: Koso Game (Node.js, MongoDB, Socket.io — real-time multiplayer backend) · DeskTrack (PHP, Yii2, MySQL, Stripe

— workforce time-tracking) · Flex Force (PHP, Yii2, MySQL — workforce management) · MyCareerBugs (PHP, Laravel, MySQL — recruitment portal) · Kricel (PHP, MySQL — enterprise IT consultancy) · Shubhweddings (PHP, MySQL — wedding planning platform) EDUCATION

Bachelor of Computer Applications (BCA)

Jaipur National University (JNU) 2018 – 2021

Polytechnic Diploma

Govt. R.C. Khaitan Polytechnic, Jaipur 2016 – 2018

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