Direct Client Req : Sr Java Full Stack Developer @ Washington, DC/Philadelphia, PA/Wilmington DE

[Prasad Rao]

Please send me your updated resume to pr...@idexcel.com

Job Title: Sr Java Full Stack Developer

Location: Washington, DC/Philadelphia, PA/Wilmington DE

Duration: 12+ Months

Need local to Washington, DC/Philadelphia, PA/Wilmington DE

About the role: We're looking for a Senior Software Engineer to design, build and run the backend services and event-driven integrations behind our operations apps. About 75–80% of the work is backend (Java, Spring Boot, Kafka). The other 20–25% is front-end work on our Angular apps.

What You’ll Do (Other duties may be assigned):

Design, build and maintain Spring Boot microservices (Java 17/21) that expose REST and reactive APIs.

Build event-driven integrations with Spring Kafka, including producers and consumers, retries, dead-letter topics (DLTs), idempotency, ordering and handling messages that change format over time.

Model and tune data access with Spring Data JPA, Hibernate and PostgreSQL.

Build batch and scheduled jobs with Spring Batch.

Make services resilient with Resilience4j (circuit breakers, retries, rate limiting), caching and health monitoring through Actuator.

Secure services with Spring Security and OAuth2/JWT, and manage secrets through AWS Secrets Manager.

Build and improve features in our Angular apps (about 20–25% of your time).

Write strong unit and integration tests (JUnit 5, Spring Boot Test), and help with end-to-end tests in Playwright.

Containerize services with Docker, deploy to AWS and own CI/CD with GitHub Actions and CodeBuild.

Lead design reviews, mentor engineers, set coding standards and help support production systems.

Required Qualifications:

Design, build and maintain Spring Boot microservices (Java 17/21) that expose REST and reactive APIs.

Build event-driven integrations with Spring Kafka, including producers and consumers, retries, dead-letter topics (DLTs), idempotency, ordering and handling messages that change format over time.

Model and tune data access with Spring Data JPA, Hibernate and PostgreSQL.

Build batch and scheduled jobs with Spring Batch.

Make services resilient with Resilience4j (circuit breakers, retries, rate limiting), caching and health monitoring through Actuator.

Secure services with Spring Security and OAuth2/JWT, and manage secrets through AWS Secrets Manager.

Build and improve features in our Angular apps (about 20–25% of your time).

Write strong unit and integration tests (JUnit 5, Spring Boot Test), and help with end-to-end tests in Playwright.

Containerize services with Docker, deploy to AWS and own CI/CD with GitHub Actions and CodeBuild.

Lead design reviews, mentor engineers, set coding standards and help support production systems.

Preferred / nice to have (about 20–25% of the role):

Angular (v15+, ideally the latest versions), TypeScript and RxJS.

State management with NgRx.

UI libraries such as PrimeNG, Angular Material and Tailwind CSS.

Playwright or similar end-to-end test automation.

Spring WebFlux and reactive programming.

Schema Registry, Avro/JSON schemas or Amazon MSK.

Experience in transportation, rail or logistics.

Tech stack:

Java 17/21 · Spring Boot · Spring Kafka · Spring Batch · Spring Security/OAuth2 · JPA/Hibernate · PostgreSQL · Resilience4j · AWS · Docker · GitHub Actions · Angular · NgRx · PrimeNG · Tailwind · Playwright

Education

A bachelor’s degree in computer science, Engineering or a related field.