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Hi, I’m Venkata Sai, a software engineer specializing in full-stack Java/JavaScript development. I design, build and deploy scalable microservices for e-commerce, healthcare, and financial platforms, and I enjoy turning complex problems into clean, maintainable code that delivers value to users. I’m passionate about crafting responsive UIs with React/Angular, implementing secure API integrations (OAuth 2.0, JWT), and embracing DevOps practices with Docker, Kubernetes, and CI/CD. I thrive in collaborative environments and love learning new technologies to improve performance and reliability.…Hi, I’m Venkata Sai, a software engineer specializing in full-stack Java/JavaScript development. I design, build and deploy scalable microservices for e-commerce, healthcare, and financial platforms, and I enjoy turning complex problems into clean, maintainable code that delivers value to users. I’m passionate about crafting responsive UIs with React/Angular, implementing secure API integrations (OAuth 2.0, JWT), and embracing DevOps practices with Docker, Kubernetes, and CI/CD. I thrive in collaborative environments and love learning new technologies to improve performance and reliability.

Venkata Sai

Full Stack Developer, Web Developer, Front-End Developer, +3

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Hi, I’m Venkata Sai, a software engineer specializing in full-stack Java/JavaScript development. I design, build and deploy scalable microservices for e-commerce, healthcare, and financial platforms, and I enjoy turning complex problems into clean, maintainable code that delivers value to users. I’m passionate about crafting responsive UIs with React/Angular, implementing secure API integrations (OAuth 2.0, JWT), and embracing DevOps practices with Docker, Kubernetes, and CI/CD. I thrive in collaborative environments and love learning new technologies to improve performance and reliability.…Hi, I’m Venkata Sai, a software engineer specializing in full-stack Java/JavaScript development. I design, build and deploy scalable microservices for e-commerce, healthcare, and financial platforms, and I enjoy turning complex problems into clean, maintainable code that delivers value to users. I’m passionate about crafting responsive UIs with React/Angular, implementing secure API integrations (OAuth 2.0, JWT), and embracing DevOps practices with Docker, Kubernetes, and CI/CD. I thrive in collaborative environments and love learning new technologies to improve performance and reliability.

Available to hire

Hi, I’m Venkata Sai, a software engineer specializing in full-stack Java/JavaScript development. I design, build and deploy scalable microservices for e-commerce, healthcare, and financial platforms, and I enjoy turning complex problems into clean, maintainable code that delivers value to users.

I’m passionate about crafting responsive UIs with React/Angular, implementing secure API integrations (OAuth 2.0, JWT), and embracing DevOps practices with Docker, Kubernetes, and CI/CD. I thrive in collaborative environments and love learning new technologies to improve performance and reliability.

Skills

Experience Level

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Intermediate

Intermediate

Intermediate

Language

English

Fluent

Work Experience

Full-Stack Developer at Mastercard

September 1, 2024 - Present

Designed and built end-to-end scalable microservices using Java 11, Spring Boot, and Hibernate for a high-traffic e-commerce platform. Implemented RESTful APIs for B2B/B2C payments and developed responsive UI components with Angular/TypeScript and React to enhance user engagement. Migrated backend services to Google Cloud Compute Engine and Cloud Storage, enabling faster deployments and cost savings; implemented serverless features with AWS Lambda and S3 for flexible storage. Containerized services with Docker and deployed on Kubernetes to ensure consistent environments. Built CI/CD pipelines with Jenkins to automate builds and deployments, integrated Apache Kafka for real-time service communication, and set up Splunk for logging to reduce incident resolution time. Secured APIs with OAuth 2.0 and followed OWASP guidelines to protect against common vulnerabilities. Collaborated in Agile environments using JIRA/Confluence and maintained code quality through version control with Git/Bitbu

Software Engineer at TCS / Lloyds Banking Group, India

December 1, 2022 - September 22, 2025

Contributed to a scalable patient management system using Spring Boot, Hibernate, and MySQL, enabling real-time tracking of over 15,000 patients and providers. Built a dynamic healthcare portal with React.js and Node.js, improving appointment scheduling and self-service usage by 40%. Enhanced mobile UX with responsive HTML5/CSS3/JavaScript and integrated GraphQL alongside REST to reduce frontend latency by ~40%. Implemented real-time dashboards with Chart.js/D3.js and utilized Elasticsearch for fast patient record search. Migrated legacy systems to AWS EC2/S3, migrated parts of the backend to AWS Lambda and DynamoDB for scalability, and deployed microservices on GCP Compute Engine/Cloud Storage. Established Kafka-based real-time order tracking and alerts, and automated CI/CD pipelines with Jenkins. Containerized services with Docker and managed deployments with Kubernetes. Implemented OAuth 2.0/JWT for secure authentication, ensuring HIPAA-compliant data handling, and maintained ~95% u

Software Engineer Intern at Inspirix Technologies

September 1, 2021 - September 22, 2025

Designed a financial transaction system with Spring Boot, Hibernate and MySQL for real-time processing. Built a React/Node.js client dashboard, improving user experience and reducing support tickets by 25%. Implemented both RESTful APIs and SOAP-based services to integrate with external banking systems, ensuring data accuracy and compliance. Optimized MySQL performance through schema redesign and query tuning, achieving ~40% latency reduction. Developed automated tests with JUnit and integrated them into a Jenkins CI/CD workflow. Containerized services with Docker and managed deployments with Kubernetes to ensure scalable, reliable releases. Deployed infrastructure on AWS EC2, supporting high concurrency with robust uptime.

Full-Stack Developer at Mastercard

September 1, 2024 - Present

Designed and built end-to-end, scalable microservices using Java 11, Spring Boot, and Hibernate for a high-traffic e-commerce payments platform. Implemented RESTful APIs for B2B/B2C integrations with JSON/XML, and developed responsive UI components using Angular/TypeScript and React.js. Migrated backend services to Google Cloud Compute Engine and Cloud Storage, added serverless features with AWS Lambda, and containerized services with Docker and deployed via Kubernetes. Built Jenkins CI/CD pipelines, enabled real-time event streaming with Apache Kafka, and automated payments and tracking workflows with AWD. Implemented Splunk logging, followed OWASP security practices (OAuth 2.0), and collaborated in Agile/Scrum using Jira/Confluence.

Software Engineer at TCS/Lloyds Banking Group

December 1, 2022 - September 22, 2025

Contributed to scalable patient management system using Spring Boot, Hibernate, and MySQL; developed healthcare portal with React frontend and Node.js backend; integrated GraphQL to reduce frontend latency; created real-time dashboards with Chart.js and D3.js; Elasticsearch indexing; migrated legacy systems to AWS EC2/S3, moved parts to AWS Lambda/DynamoDB, and deployed microservices on GCP Compute Engine/Cloud Storage. Established Kafka-based real-time order tracking, built CI/CD pipelines with Jenkins, containerized with Docker and Kubernetes, and implemented OAuth 2.0/JWT for secure authentication with HIPAA compliance; maintained ~95% unit test coverage with JUnit.

Software Engineer at Inspirix Technologies

September 1, 2021 - September 22, 2025

Designed and developed a financial transaction system using Spring Boot, Hibernate, and MySQL for real-time processing of thousands of daily transactions. Built a client-facing dashboard with React.js and Node.js, created executive dashboards, and integrated REST and SOAP-based services with external banking systems. Optimized MySQL performance, implemented automated testing with JUnit and Jenkins, containerized with Docker and Kubernetes, and deployed on AWS EC2. Supported 100,000+ concurrent users with high availability, collaborating in Agile/Scrum practices.

Full-Stack Developer at Mastercard

September 1, 2024 - October 31, 2025

Designed and built end-to-end scalable microservices using Java 11, Spring Boot and Hibernate for a high-traffic e-commerce platform. Implemented RESTful APIs for B2B/B2C payment systems, using JSON and XML, and created reusable UI components with Angular/TypeScript and React.js to improve mobile responsiveness. Migrated backend services to Google Cloud (Compute Engine, Cloud Storage) and added serverless features with AWS Lambda and S3. Containerized services with Docker and deployed via Kubernetes, and built CI/CD pipelines with Jenkins to streamline deployments. Integrated Apache Kafka for real-time service communication and ensured secure authentication with OAuth 2.0/JWT while following OWASP best practices. Logging with Splunk and collaboration through JIRA/Confluence enabled faster issue resolution and release cycles.

Software Engineer at Tata Consultancy Services (Lloyds Banking Group)

December 31, 2022 - December 31, 2022

Built a scalable patient management system using Spring Boot, Hibernate and MySQL for real-time tracking of 15,000+ patients/providers. Designed a healthcare portal with React.js/Node.js, improving appointment scheduling and self-service usage by ~40%. Enhanced mobile UX with HTML5/CSS3/JavaScript, and introduced GraphQL alongside REST to reduce frontend latency by ~40%. Created real-time dashboards with Chart.js/D3.js, indexed records with Elasticsearch, and migrated legacy workloads to AWS (EC2/S3) while moving parts to serverless (AWS Lambda/DynamoDB). Deployed microservices on GCP (Compute Engine/Cloud Storage) and implemented Kafka for order tracking/alerts. Built CI/CD pipelines with Jenkins, containerized with Docker/Kubernetes, and secured OAuth 2.0/JWT to ensure HIPAA compliance. Achieved ~95% unit test coverage with JUnit.

Software Engineer at Inspirix Technologies

September 30, 2021 - September 30, 2021

Designed and developed a financial transaction system using Spring Boot, Hibernate and MySQL for real-time processing of 10,000+ daily transactions. Built a client dashboard with React.js/Node.js, improving user experience and reducing support tickets by 25%. Implemented REST and SOAP-based integrations with external banking systems, optimized MySQL schemas/queries, and established automated testing with JUnit integrated into a Jenkins CI/CD pipeline. Containerized services with Docker and managed deployments with Kubernetes. Deployed infrastructure on AWS EC2, supporting 100,000+ concurrent users with high uptime. Collaborated in Agile ceremonies and translated requirements into technical tasks.