Looks like you have JavaScript disabled. For the full Twine experience, you will need to re-enable it.

Hi, I'm Sanjay K.—a results-driven Full-Stack Java Engineer with 5+ years of experience delivering high-performance, cloud-native enterprise applications across e-commerce, banking, and analytics domains. I specialize in Java (17/11), Spring Boot microservices, React.js, and AWS, with a track record of improving data throughput, system reliability, and developer productivity. Beyond writing solid backend and compelling frontends, I love mentoring teammates, promoting DevOps practices, and turning complex requirements into scalable, secure solutions. I’ve led initiatives at Shopify to optimize data sync by 50%, and I’ve previously helped Accenture accelerate performance and deliver real-time analytics for large enterprise users. I’m passionate about building resilient microservices and partnering with product and operations teams to drive impact.…Hi, I'm Sanjay K.—a results-driven Full-Stack Java Engineer with 5+ years of experience delivering high-performance, cloud-native enterprise applications across e-commerce, banking, and analytics domains. I specialize in Java (17/11), Spring Boot microservices, React.js, and AWS, with a track record of improving data throughput, system reliability, and developer productivity. Beyond writing solid backend and compelling frontends, I love mentoring teammates, promoting DevOps practices, and turning complex requirements into scalable, secure solutions. I’ve led initiatives at Shopify to optimize data sync by 50%, and I’ve previously helped Accenture accelerate performance and deliver real-time analytics for large enterprise users. I’m passionate about building resilient microservices and partnering with product and operations teams to drive impact.

Sanjay K.

Full Stack Developer, Cloud Developer, DevOps Developer, +4





Hi, I'm Sanjay K.—a results-driven Full-Stack Java Engineer with 5+ years of experience delivering high-performance, cloud-native enterprise applications across e-commerce, banking, and analytics domains. I specialize in Java (17/11), Spring Boot microservices, React.js, and AWS, with a track record of improving data throughput, system reliability, and developer productivity. Beyond writing solid backend and compelling frontends, I love mentoring teammates, promoting DevOps practices, and turning complex requirements into scalable, secure solutions. I’ve led initiatives at Shopify to optimize data sync by 50%, and I’ve previously helped Accenture accelerate performance and deliver real-time analytics for large enterprise users. I’m passionate about building resilient microservices and partnering with product and operations teams to drive impact.…Hi, I'm Sanjay K.—a results-driven Full-Stack Java Engineer with 5+ years of experience delivering high-performance, cloud-native enterprise applications across e-commerce, banking, and analytics domains. I specialize in Java (17/11), Spring Boot microservices, React.js, and AWS, with a track record of improving data throughput, system reliability, and developer productivity. Beyond writing solid backend and compelling frontends, I love mentoring teammates, promoting DevOps practices, and turning complex requirements into scalable, secure solutions. I’ve led initiatives at Shopify to optimize data sync by 50%, and I’ve previously helped Accenture accelerate performance and deliver real-time analytics for large enterprise users. I’m passionate about building resilient microservices and partnering with product and operations teams to drive impact.

Available to hire

Hi, I’m Sanjay K.—a results-driven Full-Stack Java Engineer with 5+ years of experience delivering high-performance, cloud-native enterprise applications across e-commerce, banking, and analytics domains. I specialize in Java (17/11), Spring Boot microservices, React.js, and AWS, with a track record of improving data throughput, system reliability, and developer productivity.

Beyond writing solid backend and compelling frontends, I love mentoring teammates, promoting DevOps practices, and turning complex requirements into scalable, secure solutions. I’ve led initiatives at Shopify to optimize data sync by 50%, and I’ve previously helped Accenture accelerate performance and deliver real-time analytics for large enterprise users. I’m passionate about building resilient microservices and partnering with product and operations teams to drive impact.

Skills

Experience Level

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Intermediate

Intermediate

Intermediate

Intermediate

Intermediate

Language

English

Fluent

Work Experience

Full-Stack Java Engineer at Shopify

June 1, 2024 - November 19, 2025

Lead Full-Stack Java Engineer for Merchant Insights application, built on Spring Boot backend integrating with GraphQL & REST Admin APIs from Shopify. Crafted real-time data workflows, improving data sync and throughput by approximately 50% while mentoring engineers on coding standards.

Full-Stack Java Developer at Accenture

July 1, 2023 - July 1, 2023

Spearheaded enterprise retail order and inventory portal, optimized caching for a 30% boost in page load times, and designed RESTful APIs for order management. Developed a banking CRM dashboard and a real-time analytics platform, reducing average API response time significantly.

Lead Full-Stack Java Engineer at Shopify

June 1, 2024 - Present

Lead Full-Stack Java Engineer for Merchant Insights application, built on Spring Boot backend integrating with GraphQL & REST Admin APIs from Shopify, crafting real-time data workflows and scalable services for thousands of merchants. Developed dynamic React/TypeScript front-end dashboard leveraging WebSocket streams for near real-time inventory updates aligned with modern UI/UX standards. Architected backend service on AWS Fargate, built Docker images, CI/CD pipelines via Jenkins, OAuth authentication, and CloudWatch monitoring. Designed efficient GraphQL queries and REST endpoints improving data sync by approximately 50%, optimizing performance and throughput in a cloud-native setup. Built full-stack Java microservices with Spring Boot, integrated with Shopify APIs and AWS for containerized, scalable deployments. Mentored engineers and established coding standards for Spring Boot, React/TypeScript, and cloud-native deployments.

Full-Stack Java Developer at Accenture

July 1, 2019 - July 1, 2023

Spearheaded enterprise retail order and inventory portal using Java 11, Spring Boot microservices, Hibernate, MySQL, Angular/TypeScript; optimized caching to boost page load by around 30%. Designed RESTful APIs for order management with Spring MVC; secured integration and responsive UI with Angular. Tuned MySQL queries and ORM mapping via Hibernate, improving backend performance and user experience. Developed banking CRM dashboard using Spring Boot, PostgreSQL, React.js, and integrated third-party KYC/payment services; deployed on AWS EC2/RDS with Jenkins pipelines. Reduced average API response time by approximately 25% through query tuning, microservice refactoring, and load balancing. Built real-time analytics platform with Spring Boot, Apache Kafka, and MongoDB (NoSQL), capable of processing over 500,000 events/day, reducing latency by 50%. Containerized and orchestrated deployments with Docker and Kubernetes, implementing CI/CD and automated monitoring. Mentored junior developers i