Development Tester at Eliassen Group Development Tester at Eliassen Group in Denver, Colorado Posted in about 23 hours ago.

Type:

full-time Description Hybrid 4 days onsite, 1 remote. in Englewood, CO Our client seeks a Development Tester to expand automated test coverage for backend microservices supporting advanced in-home Wi-Fi routers. The role focuses on

REST API

testing, Java-based automation with JUnit and Spring Boot, and end-to-end validation across complex microservice ecosystems. The engineer will collaborate with the team, perform targeted manual testing for system familiarity, and troubleshoot defects across services and integrations. Due to client requirements, applicants must be willing and able to work on a w2 basis. For our w2 consultants, we offer a great benefits package that includes Medical, Dental, and Vision benefits, 401k with company matching, and life insurance.

Rate:

$55.00 to $65.00/hr. w2 JN -042026-106482 Responsibilities Design, implement, and maintain automated backend tests for REST APIs using Java and JUnit. Execute end-to-end testing across microservices, including message-driven and asynchronous workflows. Conduct manual testing to validate scenarios, reproduce issues, and build domain understanding. Troubleshoot and debug defects across services, integrations, and data layers. Create clear test documentation, including test plans, cases, and results. Use tools such as Postman or Insomnia and command-line utilities like curl or HTTPie for API validation. Collaborate with engineering and QA to improve coverage, reliability, and CI/CD quality gates. Leverage Kubernetes and AWS environments for test execution and environment validation. Experience Requirements Strong understanding of REST concepts and API testing. Strong Java and JUnit automation skills. Knowledge of core programming concepts including serialization, mapping, collections, and asynchronous programming. Experience with complex microservice end-to-end testing. Defect troubleshooting and debugging experience. Strong test documentation and technical writing skills. Strong written and verbal communication skills. Experience with Java and Spring Boot. Experience with AWS and Kubernetes. Understanding of frontend development or testing with React and Redux. Proficiency with Postman or Insomnia and curl or HTTPie. Experience with Kafka or message-driven testing such as RabbitMQ or Spark. Command line-oriented testing on Unix or Mac. NoSQL database testing with DocumentDB or MongoDB. Experience with CI/CD toolkits and pipelines such as GitLab or Harness. Experience with TestRail for test documentation. Experience with JIRA and Agile methodology. Front-end testing with React and Redux (preferred). Docker exposure (preferred). Logging services such as Splunk or Datadog (preferred). Swagger exposure (preferred). Oxygen framework exposure (preferred). Education Requirements