Rajkumar Murugesan Full Stack Software Engineer
Profile

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.

Skills
Languages

JavaScript, TypeScript, Python, HTML, CSS

Database

MongoDB, SQL, Postgres, TypeORM, Mongoose

Cloud

AWS, Azure

Frameworks

NodeJs, ExpressJs, NestJs, Rest API, React, NextJs

AI / Agentic Workflow

Claude Code, Cursor, Langgraph

Infra

Microservices, Docker, Serverless

Work Experience
Software Engineer
09/2024 – present | Bangalore, India
  • •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.
  • •Recognized with the "3 Years of Excellence" and "Empowering Aspirants" awards (2025) for sustained impact, leadership, and bold problem-solving.
    • Backend Developer
    02/2024 – 09/2024 | Bangalore, India
  • •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.
  • •Earned the "Fire Fighter Award" (2024) for handling critical production issues under pressure and resolving technical challenges efficiently.
    • Junior Backend Developer
    03/2022 – 02/2024 | Bangalore, India
  • •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.
  • •Won the "Team Player Award" (2023) for strong collaboration and driving team success as a core backend contributor.
    • Family Business, Operations Manager
    2017 – 2022

    Managed family business operations before transitioning into the IT industry.

    Projects
    AI-Powered Autonomous Skill Evaluation Platform
    06/2024 – 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.

    • Tech Stack: LangChain, LangGraph, AWS (ECS, ECR, ALB, WAF), PostgreSQL Aurora, Vector Databases,NestJS

    AI-based Email Marketing Campaigns Platform
    06/2023 – 05/2024
  • •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.

    • Tech Stack: Next.js, PostgreSQL, OpenAI, AWS (Cognito, SES, S3, EC2), Microservices, Redis, NestJS

    Co-Workspace Management Tool
    07/2022 – 06/2023
  • •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.

    • Tech Stack: MongoDB, Express.js, Node.js, React

    Online Medical Equipment Rental Platform
    03/2022 – 07/2022
  • •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.

    • Tech Stack: NestJS, PostgreSQL, Razorpay, SMS/Email APIs

    Education
    BE / ECE, Excel Engineering College / Anna University
    2013 – 2017 | Namakkal, India

    CGPA: 6.56

    HSC, Shri Vethathiri Vidhyalaya
    2012 – 2013 | Erode, India

    83.90%

    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