Open to opportunities

sahith reddy sappidi

@sahithreddysappidi

Message

I’m a Java/J2EE full-stack developer building secure microservices and cloud-native APIs.

United States

Message

What I'm looking for

I’m looking for a role where I can build secure Java microservices and REST/GraphQL APIs, drive Kafka-based event architectures, and strengthen cloud-native CI/CD and observability across Docker/Kubernetes environments.

I bring 10 years of experience in Java/J2EE full-stack development, architecture, testing, and deployment. I specialize in building secure, scalable microservices-based applications using Java 8/11/17, Spring Boot, and REST/GraphQL APIs.

I’ve worked across end-to-end delivery—coding RFCs, implementing Java 17 enhancements, and building CI/CD with Jenkins and GitHub Actions. I’m hands-on with multithreading, concurrency, Spring Batch, and large-scale batch processing, and I use OAuth2.0, JWT, and Spring Security to harden services.

I also thrive in cloud-native environments, combining AWS/GCP/Azure, Docker, and Kubernetes with strong observability (Splunk, Kibana, Datadog, Grafana, Prometheus). Highlights include initiating modernizations at American Express, building secure microservices and GraphQL APIs at Discover, delivering 15+ microservices with event-driven Kafka/Redis coordination and Spring Batch jobs processing 1M+ transactions at Charter Communications, and improving streaming and deployment performance during earlier projects.

Experience

Work history, roles, and key accomplishments

Current

Java Developer

Current

American Express

Jan 2026 - Present (6 months)

Implemented network modernization by updating an existing GAN application to NeMo. Performed regression testing, created RFCs for terminal/config updates, enhanced interservice communication with Java 17, and monitored stability using Splunk and Kibana.

Spring Boot Kafka MySQL Kubernetes AWS Jenkins Regression Testing Performance Monitoring Splunk Kibana RFC

Java Developer

Discover Financial Services

Oct 2024 - Jan 2026 (1 year 3 months)

Engineered microservices that enabled authorized users to add their SSN through different sources. Built secure REST/GraphQL APIs using OAuth2.0 and JWT, improved performance with Kafka event streams, and revamped CI/CD with Jenkins and GitHub.

Spring Boot Kafka MySQL MariaDB Kubernetes AWS Jenkins React GraphQL OAuth 2.0 JWT CI CD Integration Testing SQL Query Optimization Dynatrace Couchbase Postman Kibana Datadog RBAC XSS CSRF

Senior Java Developer

Charter Communications

Apr 2023 - Oct 2024 (1 year 6 months)

Developed and fine-tuned a payments application for customers to purchase Charter services. Built 15+ microservices with event-driven architecture using Kafka and Redis, delivered server-side payment services, initiated Spring Batch processing for 1M+ transactions, and managed deployments with Docker and Kubernetes on GKE.

Senior Java Developer

American Express

May 2022 - Mar 2023 (10 months)

Implemented a Risk Decision Engine (RDE) to derive fraud scores based on credit and fraud history. Built Spring Boot microservices and secure REST APIs, used Kafka/RabbitMQ for asynchronous streaming, deployed with Docker and Kubernetes, and delivered CI/CD pipelines with Jenkins.

Java 8 Spring Boot Kafka RabbitMQ React REST APIs OAuth 2.0 JWT LDAP Okta Docker Kubernetes AWS Jenkins PostgreSQL Hibernate Query Optimization Dynatrace Prometheus Grafana Vert.X GraphQL Maven Camunda JBPM

Java Full Stack Developer

Edward Jones

Dec 2019 - Apr 2022 (2 years 4 months)

Built a financial advisor portal providing tax benefits and investment options using a full-stack architecture. Refactored front-end components with Angular 8, built Spring-based microservices and REST APIs, integrated Kafka and PCF deployments, and delivered unit and integration testing with JUnit and Mockito.

Java Spring Boot Hibernate JPA MySQL Kafka PCF REST APIs Junit Mockito Selenium SDLC Waterfall Agile Scrum Gradle Git Jira

Java Full Stack Developer

CenturyLink

Jan 2018 - Dec 2019 (1 year 11 months)

Built telecom ordering systems and infrastructure provisioning services across multiple SDLC phases. Developed client-side validations with Angular and Bootstrap, implemented Spring controllers/services/DAOs with dependency injection and AOP, and supported clustered microservices via an API gateway approach and containerized deployments.

Java Full Stack Developer

AAA National Insurance

Mar 2017 - Jan 2018 (10 months)

Built an application for roadside assistance with end-to-end ownership across design, development, testing, support, and documentation using Agile Scrum. Implemented Spring Boot REST APIs, Hibernate JPA with multi-table transactions, and deployed on Docker and AWS while performing testing with Selenium and JUnit/Mockito.

Java 8 Spring Boot MySQL Docker AWS Jenkins Maven Spring MVC REST APIs Selenium Junit Mockito Log4j JPA SSL TLS Gradle Git IntelliJ Production Support Performance Optimization

Software Developer

Hinduja Global Solutions

Dec 2014 - Aug 2016 (1 year 8 months)

Built a digital library system for book search, reservations, and admin tools using a Struts MVC approach. Designed Oracle schemas and streamlined SQL queries, implemented JSP/JSTL front-end components, and supported integration/unit testing and ANT-based deployments.