Open to opportunities

Sai Charan Gunasekhar

@saicharangunasekhar

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Full Stack Software Engineer building scalable web apps and RESTful APIs.

United States

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What I'm looking for

I’m looking for a Full Stack role where I can build scalable React/Java services, design REST APIs and microservices, and improve performance using cloud + CI/CD—within a collaborative Agile team.

I’m a Full Stack Software Engineer with 4+ years of experience designing, developing, and maintaining scalable web applications and RESTful APIs. I combine strong frontend and backend skills with a focus on performance, reliability, and clean delivery in Agile environments.

I’ve improved user experience and system responsiveness—reducing page load times by 30% and response times by 35%—by optimizing SQL queries, backend APIs, and frontend rendering logic. I also strengthen quality through automated testing (JUnit, Mockito, Jest) and modern DevOps practices (CI/CD with Jenkins, GitHub Actions, GitLab CI/CD), and I’ve built distributed microservices and cloud-native solutions on AWS and Azure, including event-driven architectures with Kafka and RabbitMQ.

Experience

Work history, roles, and key accomplishments

Current

Software Engineer

Current

Kroger

Apr 2025 - Present (1 year 1 month)

Developed and maintained scalable full stack web applications using React, TypeScript, Node.js, Java, and Spring Boot, improving usability and reducing page load times by 30%. Built event-driven microservices with Kafka and optimized SQL queries and APIs to reduce response times by 35%, while owning feature delivery and CI/CD with Jenkins and GitHub Actions.

ReactJS TypeScript Node Spring Boot RESTful APIs Microservices Kafka SQL Query Optimization CI CD GitHub Actions

Java Full Stack Engineer

Assurex Global

May 2024 - Mar 2025 (10 months)

Developed and maintained full stack enterprise applications with React and Angular UIs and Spring Boot microservices, enhancing responsiveness via lazy loading and reusable component architecture. Implemented secure REST APIs with Spring Security/OAuth2, deployed to Azure AKS, and automated CI/CD with GitLab CI/CD and Infrastructure as Code using Terraform and ARM templates.

ReactJS Angular TypeScript Microservices RESTful APIs Spring Security Gitlab CI

Full Stack Engineer

Interactive Brokers

Jul 2022 - Dec 2023 (1 year 5 months)

Designed and built high-performance full stack financial trading applications using React and Java Spring Boot to support real-time REST API transactions. Architected low-latency distributed systems with concurrency, deployed serverless components on AWS, and automated CI/CD with AWS CodePipeline and GitHub while troubleshooting production reliability issues.

ReactJS Java Spring Boot REST APIs AWS Lambda API Gateway DynamoDB S3 Concurrency Docker Kubernetes AWS CodePipeline GitHub

Java Engineer

Siemens Healthineers

Mar 2021 - Jun 2022 (1 year 3 months)

Developed healthcare applications end-to-end using Angular for the frontend and Java (Spring Framework/Spring Boot) with Hibernate for backend services. Created and optimized REST APIs and relational database queries (indexing and caching), and supported production deployment using WebLogic and Apache Tomcat with CI/CD via GitHub Actions.

Angular Java Spring Boot Spring Framework RESTful APIs SQL Query Optimization