Senior Quality Assurance Java Engineer | Washington, DC

Senior Quality Assurance Java Engineer

Long term

Washington, DC                                                      

Job Summary

The Senior Quality Assurance Engineer will design, implement, and maintain comprehensive test strategies for 

This role supports a complex, workflow-driven, distributed microservices ecosystem that manages equipment lifecycle, yard operations, scheduling, and operational events.

The ideal candidate is comfortable testing state-based systems, APIs, distributed integrations, and data-intensive workflows in mission-critical environments.

Essential Responsibilities

• Design and execute end-to-end test strategies for workflow-driven and state-heavy systems.

•  Develop and maintain automated test frameworks for UI and API testing (Playwright, Selenium, REST-assured, Karate, or similar).

• Validate REST APIs, integration points, and distributed microservices.

•Perform database-level validations to ensure data integrity, referential consistency, and correct state transitions.

•Validate event-driven workflows and message-based integrations (Kafka or similar technologies).

•Develop tests for resilience scenarios including retries, failure handling, and idempotency.

•Conduct performance and load testing to validate behavior under peak operational conditions.

•Integrate automation suites into CI/CD pipelines (Jenkins, GitHub, Bitbucket, or equivalent).

•Analyze logs and monitoring data (CloudWatch, AppDynamics, ELK/EFK or similar) to validate system behavior.

•Collaborate with product owners, developers, and architects to define test strategy and quality gates during design and implementation phases.

Minimum Qualifications

•Bachelor’s degree  or  7+ years relevant work experience.

• 5+ years of experience in manual and automated testing of enterprise systems.

• Strong experience in UI and API automation.

•Proficiency in Java and TypeScript for automation scripting.

• Experience testing microservices-based architectures.

•Strong SQL skills and experience validating relational and/or NoSQL databases.

• Experience working in Agile environments.

•Strong analytical and problem-solving skills.

Required Qualifications

• Experience testing complex workflow-driven or operational systems (e.g., logistics, transportation, airline, financial transaction platforms).

•Experience with event-driven or message-based systems (Kafka preferred).

• Experience with performance testing tools (JMeter or similar).

•Familiarity with AWS or other cloud environments.

•Familiarity with legacy mainframe or green-screen systems (e.g., 3270), batch processing, and legacy-to-modern system integration validation.