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

I am a Senior Full Stack Java / Application Developer with over a decade of experience in building resilient enterprise-grade software. I specialize in Java/J2EE, Spring ecosystems, microservices, and modern front-end stacks (React, Angular, Next.js). I have delivered healthcare IT integrations (FHIR, HL7, HIPAA), banking/financial, e-commerce, and retail solutions, and I thrive in agile environments leading teams of 8-10 developers. I am proficient with cloud, CI/CD, DevOps, and data platforms, and I enjoy turning complex requirements into scalable solutions. I am an adaptive learner who emphasizes code quality, TDD, and user-focused design. I mentor teammates through pair programming, technical trainings, and hands-on workshops, and I collaborate closely with clients to ensure clear status reporting and minimal escalations. My passion is building robust, maintainable systems that deliver tangible business value while continuously improving processes and reducing costs.…I am a Senior Full Stack Java / Application Developer with over a decade of experience in building resilient enterprise-grade software. I specialize in Java/J2EE, Spring ecosystems, microservices, and modern front-end stacks (React, Angular, Next.js). I have delivered healthcare IT integrations (FHIR, HL7, HIPAA), banking/financial, e-commerce, and retail solutions, and I thrive in agile environments leading teams of 8-10 developers. I am proficient with cloud, CI/CD, DevOps, and data platforms, and I enjoy turning complex requirements into scalable solutions. I am an adaptive learner who emphasizes code quality, TDD, and user-focused design. I mentor teammates through pair programming, technical trainings, and hands-on workshops, and I collaborate closely with clients to ensure clear status reporting and minimal escalations. My passion is building robust, maintainable systems that deliver tangible business value while continuously improving processes and reducing costs.

Jasmeet Singh

Full Stack Developer, Back-End Developer, Web Developer, +2





I am a Senior Full Stack Java / Application Developer with over a decade of experience in building resilient enterprise-grade software. I specialize in Java/J2EE, Spring ecosystems, microservices, and modern front-end stacks (React, Angular, Next.js). I have delivered healthcare IT integrations (FHIR, HL7, HIPAA), banking/financial, e-commerce, and retail solutions, and I thrive in agile environments leading teams of 8-10 developers. I am proficient with cloud, CI/CD, DevOps, and data platforms, and I enjoy turning complex requirements into scalable solutions. I am an adaptive learner who emphasizes code quality, TDD, and user-focused design. I mentor teammates through pair programming, technical trainings, and hands-on workshops, and I collaborate closely with clients to ensure clear status reporting and minimal escalations. My passion is building robust, maintainable systems that deliver tangible business value while continuously improving processes and reducing costs.…I am a Senior Full Stack Java / Application Developer with over a decade of experience in building resilient enterprise-grade software. I specialize in Java/J2EE, Spring ecosystems, microservices, and modern front-end stacks (React, Angular, Next.js). I have delivered healthcare IT integrations (FHIR, HL7, HIPAA), banking/financial, e-commerce, and retail solutions, and I thrive in agile environments leading teams of 8-10 developers. I am proficient with cloud, CI/CD, DevOps, and data platforms, and I enjoy turning complex requirements into scalable solutions. I am an adaptive learner who emphasizes code quality, TDD, and user-focused design. I mentor teammates through pair programming, technical trainings, and hands-on workshops, and I collaborate closely with clients to ensure clear status reporting and minimal escalations. My passion is building robust, maintainable systems that deliver tangible business value while continuously improving processes and reducing costs.

Available to hire

I am a Senior Full Stack Java / Application Developer with over a decade of experience in building resilient enterprise-grade software. I specialize in Java/J2EE, Spring ecosystems, microservices, and modern front-end stacks (React, Angular, Next.js). I have delivered healthcare IT integrations (FHIR, HL7, HIPAA), banking/financial, e-commerce, and retail solutions, and I thrive in agile environments leading teams of 8-10 developers. I am proficient with cloud, CI/CD, DevOps, and data platforms, and I enjoy turning complex requirements into scalable solutions.

I am an adaptive learner who emphasizes code quality, TDD, and user-focused design. I mentor teammates through pair programming, technical trainings, and hands-on workshops, and I collaborate closely with clients to ensure clear status reporting and minimal escalations. My passion is building robust, maintainable systems that deliver tangible business value while continuously improving processes and reducing costs.

Skills

Experience Level

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Language

English

Fluent

Work Experience

Senior Application Developer at Express Scripts

January 1, 2021 - Present

Led migration of legacy PCF applications to HIPAA-compliant, FHIR-based microservices hosted on AWS and OpenShift. Designed TypeScript-based GraphQL APIs with strict input validation for EHR integrations. Externalized application configuration across environments using Terraform. Built microservices with Spring Boot and Spring Security and deployed to AWS. Used MongoDB and Cassandra for real-time analytics storage. Implemented batch processing with Spring Batch, messaging with ActiveMQ, and CI/CD pipelines with Jenkins. Created containerized services with Docker and Kubernetes and integrated AWS services (EC2, S3) for deployment and monitoring.

Senior Full Stack Java Developer at Microsoft

December 1, 2020 - September 15, 2025

Engaged in full SDLC within Agile teams. Implemented Angular v11 front-end components and RESTful services using Golang in a microservices architecture. Designed REST APIs with Spring Boot, integrated Python (FastAPI) for certain services, and built GraphQL APIs with Apollo Server. Deployed workloads on AWS and Azure, using Terraform for IaC and Docker/Kubernetes for container orchestration. Worked with data stores including Oracle, MongoDB, PostgreSQL and Elasticsearch; led CI/CD pipelines via Jenkins and collaborated on messaging using Kafka/RabbitMQ.

Backend Java Developer at TARGET

March 1, 2018 - September 15, 2025

Designed and implemented event-driven microservices with Apache Kafka and Akka Streams (Scala) for real-time order processing and inventory updates. Built microservices using Spring Boot with JPA/Hibernate, performed code reviews, and ensured code quality with SonarQube. Managed builds with Maven, deployed to Tomcat, and supported CI/CD (Jenkins). Worked with DRF-like patterns, Swagger for API docs, and various data stores (Oracle, Elasticsearch, MS SQL). Implemented Terraform-based security and deployed services to Azure/Kubernetes environments.

Java/J2EE Developer at Citizens Financial

May 1, 2016 - September 15, 2025

Contributed to analysis, design, implementation and testing of J2EE-based banking applications. Used EJB 2.0 patterns, WebSphere, Hibernate, and PL/SQL for data access. Developed complex SQL, stored procedures, and triggers; built Ant-based build scripts; implemented WebSphere-based deployment and provided production support. Collaborated on REST services, JUnit testing, and continuous improvement initiatives within an Agile framework.

Senior Application Developer at Express Scripts

January 1, 2021 - Present

Led migration of legacy PCF applications to HIPAA-compliant FHIR-based microservices hosted on AWS and OpenShift. Designed TypeScript-based GraphQL APIs (Apollo Server) with strict input validation for EHR integrations. Externalized configuration across environments using Spring Boot Actuator. Managed infrastructure provisioning with Terraform. Built microservices with Spring Boot and Spring Security, integrated with AWS services, Cassandra, and MongoDB. Implemented Scala Spark-based real-time analytics for health data, and batch processing with Spring Batch. Implemented messaging with ActiveMQ and Kafka; containerized services with Docker and Kubernetes; established CI/CD pipelines with Jenkins. Created monitoring with Prometheus/Grafana and integrated logging with Log4j; performed code reviews and mentored juniors.

Senior Full Stack Java Developer at Microsoft

December 1, 2020 - September 15, 2025

Played a key role in full SDLC; built front-end components with Angular v11 and RESTful services via Spring Boot and Golang microservices. Implemented RESTful APIs using FastAPI with Python, and integrated GraphQL (Apollo Server) and NestJS. Used AWS and Azure for cloud deployments; implemented IaC with Terraform and CI/CD with Jenkins. Worked with Docker/Kubernetes, Kafka, MongoDB, and SQL databases (Oracle, MS SQL, MySQL). Collaborated on MEAN/MERN stack applications; ported Python ML models to Scala/Spark for scalable inference; ported Python microservices to AWS Lambda and Azure Functions. Led API design and documentation with Swagger; managed code with Git and agile workflows.

Backend Java Developer at Target

March 1, 2018 - September 15, 2025

Designed event-driven microservices using Apache Kafka and Akka Streams (Scala) to handle real-time order processing and inventory updates. Built Microservices with Spring Boot and Golang; implemented repository layers with Spring Data JPA and ORM. Led CI/CD with Jenkins; wrote extensive JUnit tests; used Docker and Kubernetes for deployment; used Terraform for security/config. Worked with Ruby on Rails for rapid backend prototyping; ported Python ML models to Scala/Spark. Focused on performance optimization and scalable architectural improvements.

Java/J2EE Developer at Citizens Financial

May 1, 2016 - September 15, 2025

Participated in SDLC analysis, design and implementation; developed presentation layer with JSP/JSF; used EJBs; Hibernate ORM with Oracle; built complex PL/SQL queries and stored procedures; WebSphere for deployment; created Ant build scripts; supported production; collaborated across teams. Developed real-time data processing modules and integrated various backend services with secure, auditable deployments.