Development Tester
Englewood, CO
Category: Quality Assurance (QA)
Industry: Communications
Reference ID: JN -042026-106482
Date Posted: 04/20/2026
Shortcut: http://careers.eliassen.com/9vNHee
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
#LI-JS1
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).
Skills, experience, and other compensable factors will be considered when determining pay rate. The pay range provided in this posting reflects a W2 hourly rate; other employment options may be available that may result in pay outside of the provided range.
W2 employees of Eliassen Group who are regularly scheduled to work 30 or more hours per week are eligible for the following benefits: medical (choice of 3 plans), dental, vision, pre-tax accounts, other voluntary benefits including life and disability insurance, 401(k) with match, and sick time if required by law in the worked-in state/locality.
If anyone reaches out to you about an open position connected with Eliassen Group, please ensure that you are working directly with us by confirming the following:
· When you work with Eliassen Group, all email communication will come from an Eliassen.com address, never Gmail, Yahoo, etc.
· Eliassen Group will never ask you for personal information (home address, bank account, or check routing number) until you have worked with someone clearly associated with Eliassen Group.
If you have any indication of fraudulent activity, please contact fraud@eliassen.com.
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Eliassen Group is an Equal Opportunity/Affirmative Action Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, pregnancy, sexual orientation, gender identity, national origin, age, protected veteran status, or disability status. Eliassen Group’s Affirmative Action Plan (AAP) is available for inspection by any employee or applicant for employment upon request, during normal business hours of Monday through Friday, 8:30am to 5:30pm EST. Interested persons should contact Phaedra Wells at pwells@eliassen.com for assistance. It is unlawful in Massachusetts and Maryland to require or administer a lie detector test as a condition of employment or continued employment. An employer who violates this law shall be subject to criminal penalties and civil liability.
Applicants with disabilities that believe they require an accommodation or assistance with a position, please email our HR team at hradmin@eliassen.com. This email inbox is designed exclusively to assist job seekers whose disability prevents them from being able to apply online. Emails sent for other purposes will not receive a response.
Please be advised that a number of fraudulent job postings have been released under the Eliassen Group brand.
Unfortunately, fraudulent job postings can happen. If anyone reaches out to you about an open position connected with Eliassen Group, never provide personal or financial information to anyone who is not clearly associated with Eliassen Group
If anyone seemingly from Eliassen Group has ever requested this personal information in the past or does so in the future, please contactInfoSec@eliassen.com.
Please ensure that you are working directly with us by confirming the following:
- When you work with Eliassen Group, all email communication will come from an Eliassen.com address, never Gmail, Yahoo, etc.
- Eliassen Group will never ask you for personal information (home address, bank account, or check routing number) until you have worked with someone clearly associated with Eliassen Group, as indicated above