Professional Journey

My career history, engineering education, and training landmarks.

Software Developer

Cotyledon Technologies Pvt Ltd

Sep 2024 - Present
  • Developed and maintained “Pick Your Slot” online slot booking applications, serving 500+ daily active users with 99.9% uptime, ensuring smooth user interactions and efficient backend operations.
  • Designed and developed RESTful APIs, enabling seamless integration with third-party services and reducing manual work by 40%.
  • Implemented a robust authentication & authorization system (JWT + role-based access), improving data security and reducing unauthorized access incidents by 100%.
  • Deployed applications on AWS (EC2, S3, RDS), achieving 99.95% uptime and supporting traffic growth of 2x without downtime.
  • Integrated Razorpay for payment and Msg91 for automated Messages with a 95% delivery rate.
  • Built batch processing jobs that automated recurring data handling tasks, cutting down manual effort by 60% and improving system efficiency.
  • Optimized SQL queries and added indexes, improving API response times by 30–50%, resulting in faster user experience.

Software Developer Intern

Webfamily Tech Solution

Jun 2024 - Aug 2024
  • Assisted in developing REST APIs using Java, Spring Boot.
  • Worked with MySQL for database interactions and query writing.
  • Integrated APIs with React.js frontend for end-to-end feature delivery.
  • Contributed to building and testing UI components with React.js.
  • Gained exposure to full-stack development workflows in a startup environment.

Full Stack Development Course - (Java, Spring Boot, React.js, MySQL)

Uniq Technology, T. Nagar

Jan-2023 to June-2023

Bachelor of Engineering (B.E.)

RVS College of Engineering and Technology, Dindigul

June-2018 - May-2022

Technical Capabilities

A high-performance stack curated for building secure, rapid, and scalable applications.

Backend Development

Java
Spring
Spring Boot
Microservices
Next.js
Express.js
Hibernate
SQL
JPQL
Batch Jobs
Spring security
JWT
OAuth 2
Sarathkumar M

SARATHKUMAR M

Java Full Stack Developer

About Me

Hi, I'm Sarathkumar, a Full Stack Developer passionate about crafting websites, e-commerce platforms, and custom business applications that solve real-world problems.

Having worked in fast-paced startup environments, I have hands-on experience navigating the complete software development lifecycle—from gathering requirements to deployment and scalable maintenance.

Beyond my full-time role, I actively pursue freelance opportunities to help businesses establish a commanding online presence while continuously pushing my own technical boundaries.

Experience

2+ Years

Expertise

Full Stack

Availability

Freelance