Open to opportunities

Sai Chandu Vallaboju

@saichanduvallaboju

I build secure, scalable full-stack web applications and REST APIs.

I've delivered full-stack web applications and internal tools for Gordon Food Services, ValueMomentum, Cognizant, and Digital Nirvana using React, Next.js, Node.js, Python, Java, SQL, and cloud-native deployment workflows. At Gordon Food Services, I improved user experience and reduced errors by 25%, improved API integration reliability by 30%, and reduced database query latency by 40%.

I build secure REST APIs with authentication, sessions, role-based access control, validation, and robust error handling. I've also automated Jira workflows, deployed Dockerized applications on AWS through CI/CD pipelines, and strengthened maintainability through testing, Git, OpenAPI, Swagger, Postman, JUnit, Mockito, and Jest.

Experience

Work history, roles, and key accomplishments

Current

Senior Java Developer

Current

Gordon Food Services

Jan 2025 - Present (1 year 9 months)

Led frontend enhancements using JavaScript, TypeScript, React, and Next.js, improving user experience and reducing errors by 25%. Designed and developed backend REST APIs with Node.js and Python, implementing request validation, authentication, and error handling to improve integration reliability by 30%.

JavaScript TypeScript React Next.js Node Python fastAPI Flask PostgreSQL MySQL REST APIs Authentication Role Based Access Control Error Handling Kafka Docker Kubernetes Git Junit Mockito OpenAPI Swagger Postman

Software Engineer – Jira Customization & Full-Stack Development

ValueMomentum Ltd.

Aug 2021 - Dec 2022 (1 year 4 months)

Developed reusable React components with JavaScript and TypeScript, delivering over 15 UI features independently. Built secure backend REST APIs with Node.js (Express) and Spring Boot, implementing request validation, authentication, role-based access control, and error handling that reduced support tickets by 20%.

React JavaScript TypeScript Node Express Spring Boot PostgreSQL MySQL REST APIs Authentication Role Based Access Control Error Handling Jira Git Jest Postman Docker AWS CI CD

Software Associate – Agile Development & Jira Integrations

Cognizant

Sep 2020 - Jul 2021 (10 months)

Supported backend Java and Spring Boot enhancements, contributing to over 15 validation and compliance workflow improvements. Tested REST APIs using Postman to validate error handling, authentication, session management, and request payloads, reducing bug turnaround time by 25%.

Java Spring Boot REST APIs Postman SQL Python Git Jenkins

Software Developer – Enterprise Web Applications

Digital Nirvana Inc.

Aug 2019 - Aug 2020 (1 year)

Developed internal web features using JavaScript, TypeScript, and Python, enhancing data retrieval workflows and improving task efficiency by 30%. Built responsive user interfaces with React, HTML, and CSS, optimizing navigation, usability, and user input validation across internal browser-based tools.