Rajkumar Murugesan

Full Stack Software Engineer

Software Engineer with 4+ years of experience building innovative applications. Focused on AI-driven solutions, full-stack development, and cloud infrastructure. Experienced in owning the full product lifecycle, building adaptive AI agents, and automating complex business workflows.

rajkumarm688@gmail.com
+91 96592 56401
Bangalore, Karnataka
SKILLS
Languages
JavaScript TypeScript Python HTML CSS
Frameworks
NodeJs ExpressJs NestJs Rest API React NextJs
Database
MongoDB SQL Postgres TypeORM Mongoose
Cloud
AWSEC2, ECS, SSM, RDS, SES, SNS, SQS, S3, Lambda Azure
AI / Agentic Workflow
Claude Code Cursor LangGraph
Infra
Microservices Docker Serverless
EXPERIENCE
Zysk Technologies
Bangalore, India · Mar 2022 – Present
Software Engineer
Sep 2024 – present
Led the complete rollout of a secure, enterprise-grade AI assessment platform. Improved system uptime and security by automating software deployments and proactively fixing vulnerabilities.
Backend Developer
Feb 2024 – Sep 2024
Launched an AI-powered email marketing platform designed to smoothly handle massive spikes in user traffic. Helped small businesses grow by building real-time e-commerce integrations and automated customer outreach tools.
Junior Backend Developer
Mar 2022 – Feb 2024
Sped up system response times by over 40% by completely redesigning the core database structure. Successfully delivered critical payment and booking features for two separate products on strict deadlines.
2017 – 2022
Managed family business operations before transitioning into the IT industry.
PROJECTS
AI-Powered Autonomous Skill Evaluation Platform
Jun 2024 – Present
  • Built adaptive AI agents: Leveraged LangChain and LangGraph to create stateful agents for mock assessments that adjust question difficulty in real time.
  • Built a scalable backend: Developed a highly optimized backend application and wrote efficient database queries to power a B2B scoring algorithm.
  • Architected AWS infrastructure: Designed a secure network configuration with AWS ECS/ECR, Load Balancers, and WAF, built for rapid auto-scaling and DDoS protection.
LangChain LangGraph AWS (ECS, ECR, ALB, WAF) PostgreSQL Aurora Vector Databases NestJS
AI-based Email Marketing Campaigns Platform
Jun 2023 – May 2024
  • Engineered AI and microservices: Built a 4-service architecture and used OpenAI function calling to automate marketing workflows and customer segmentation.
  • Built real-time integrations: Architected a plug-and-play Shopify sync and used Redis queuing to smoothly handle heavy traffic during email campaigns.
  • Managed cloud deployment: Handled the full AWS lifecycle (EC2, SES, S3) and secured the platform with AWS Cognito for enterprise OAuth and JWT sessions.
Next.js PostgreSQL OpenAI AWS (Cognito, SES, S3, EC2) Microservices Redis NestJS
Co-Workspace Management Tool
Jul 2022 – Jun 2023
  • Developed core backend logic: Built a robust meeting room booking system that resolves overlapping schedules using atomic database transactions.
  • Designed management and access tools: Created a CRUD system to track workspace amenities and an RBAC system for corporate admins to control user permissions.
  • Delivered rapid updates: Shipped new features on bi-weekly sprint cycles within a high-velocity, 10 person Scrum team.
MongoDB Express.js Node.js React
Online Medical Equipment Rental Platform
Mar 2022 – Jul 2022
  • Revamped the architecture: Migrated a legacy framework to NestJS and restructured the PostgreSQL database, reducing query wait times by over 40%.
  • Integrated payments and alerts: Connected Razorpay with secure webhooks for handling orders and refunds, and added automated SMS and email notifications.
  • Improved code quality: Applied Object-Oriented Programming (OOP) principles to create a modular, testable, and easy-to-maintain backend.
NestJS PostgreSQL Razorpay SMS/Email APIs
CERTIFICATES
AWS Solutions Architect Associate - Udemy
Issued Jul 2025 | Specializing in cloud architecture and infrastructure design on AWS
MERN Stack Developer - HCL GUVI
Certified Full Stack Developer specializing in MongoDB, Express.js, React.js, and Node.js
AWARDS
Empowering Aspirants Award - Zynaissance 2025
Awarded for thinking boldly, exploring freely, and creating equal opportunities that move the team forward
3 Years of Excellence - Zynaissance 2025
Recognized for sustained impact and dedication over three years of contributions at Zysk Technologies
Fire Fighter Award - Zynaissance 2024
Recognized for handling critical issues under pressure and resolving technical challenges efficiently
Team Player Award - Zynaissance 2023
Awarded for team success contribution and strong collaboration as a Node.js backend developer
EDUCATION
BE / ECE
2013 – 2017
Excel Engineering College / Anna University | Namakkal, India
CGPA: 6.56
HSC
2012 – 2013
Shri Vethathiri Vidhyalaya | Erode, India
83.90%
Updated Feb 2026 · Built with ❤️ by Raj · Thanks for taking your time to look into my profile 😊