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Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Application Tester - **Company:** Leidos, Inc. - **Location:** Chantilly, VA, United States - **Salary:** $116,350.0 - $210,325.0 - **Contract:** Permanent contract - **Skills:** Java (Programming Language), JavaScript (Programming Language), Systems Engineering, Automation of Tests, Microsoft Azure, C Sharp (Programming Language), Code Coverage, Computer Programming, Continuous Integration, Database Queries, Database Testing, Github, Apache JMeter, Python (Programming Language), Scrum Methodology, Systems Development Life Cycle, Strategies of Testing, Web Applications, Web Services, Performance Testing, Reliability of Systems, Git, Gitlab-ci, Information Technology, Software Version Control, Api Management, Katalon Studio, Jenkins - **Published:** September 30, 2026 - **Apply:** https://www.clearancejobs.com/jobs/9202879/application-tester ## About the Role * Active TS/SCI with Polygraph * Bachelor's degree in Computer Science, Engineering, or related field and 12+ years of experience. Additional experience in lieu of degree. * Software professional experience in QA with a focus on automation. * Strong knowledge of automation the framework/tool Katalon. * Experience in API testing * Understanding of software testing methodologies, SDLC, and Agile/Scrum. * Strong problem-solving and analytical skills. Desired Skills * Proficiency in at least one programming/scripting language (Java, Python, JavaScript, or C#). * Basic knowledge of SQL for database testing. * Experience with version control (Git). * Familiarity with CI/CD tools (Jenkins, GitLab CI, GitHub Actions, or Azure DevOps). * Knowledge of performance testing tools (JMeter, Lo) ## Description Leidos is seeking an Application Tester for a technical development program of 200+ FTE supporting the Sponsor's Attribute/Entitlement Services within the IDAM/ICAM space. The Test Engineer will join an established, high-performing team supporting two web-based applications with extensive user interfaces serving a large end-user population, as well as organizations utilizing the applications web services. The ideal candidate will have testing experience, both in performing manual testing of web-based applications as well as testing automation experience. The candidate will work on a team comprised of developers, database administrators, systems engineers, security engineers, as well as program managers and a scrum master. The ideal candidate will be familiar with agile principles, specifically scrum. The candidate will be joining a team of two testers currently supporting the applications, and will be expected to master testing on both applications to ensure that the applications have sufficient test coverage. The typical work week for the candidate is 40 hours (eight-hour days), with core hours being from 9 AM to 3 PM daily. Primary Responsibilities * Design, develop, and maintain automated test scripts for web and API testing. * Execute automated regression suites and analyze results to ensure system reliability. * Collaborate with developers and QA peers to identify test scenarios and automation opportunities. * Contribute to test planning, case design, and documentation. * Perform manual testing (functional, exploratory, regression) when needed. * Report and track defects to closure in coordination with development teams. * Stay updated with emerging test automation tools and techniques. ## Related Videos - [How a Small Team Shrank a Microsoft Monorepo by 94%](https://www.wearedevelopers.com/videos/1236-how-a-small-team-shrank-a-microsoft-monorepo-by-94) - [Innovating Developer Tools with AI: Insights from GitHub Next](https://www.wearedevelopers.com/videos/1268-innovating-developer-tools-with-ai-insights-from-github-next) - [GitLab CI pipelines for a whole company](https://www.wearedevelopers.com/videos/143-gitlab-ci-pipelines-for-a-whole-company) - [Testing .NET applications a Tool box for every developer](https://www.wearedevelopers.com/videos/704-testing-net-applications-a-tool-box-for-every-developer) - [Our GitOps approach for deploying an Identity Provider and an API Gateway in a SaaS company](https://www.wearedevelopers.com/videos/776-our-gitops-approach-for-deploying-an-identity-provider-and-an-api-gateway-in-a-saas-company) - [Bringing AI Model Testing and Prompt Management to Your Codebase with GitHub Models](https://www.wearedevelopers.com/videos/1536-bringing-ai-model-testing-and-prompt-management-to-your-codebase-with-github-models) ## Related Articles - [The 8 Best Code Testing Tools](https://www.wearedevelopers.com/magazine/402-the-8-best-code-testing-tools) - [How We Built a Worry-Free System That Runs for 10+ Years – And What We’d Do Again](https://www.wearedevelopers.com/magazine/751-how-we-built-a-worry-free-system-that-runs-for-10-years-and-what-we-d-do-again) - [Should senior developers refuse interview coding challenges?](https://www.wearedevelopers.com/magazine/29-should-senior-developers-refuse-interview-coding-challenges) - [Benefits of Using JMeter For Performance Testing](https://www.wearedevelopers.com/magazine/96-benefits-of-using-jmeter-for-performance-testing) - [The Most Popular IT Jobs on the Market](https://www.wearedevelopers.com/magazine/376-the-most-popular-it-jobs-on-the-market) - [What’s the Difference between a Junior, Mid, and Senior Developer?](https://www.wearedevelopers.com/magazine/238-what-s-the-difference-between-a-junior-mid-and-senior-developer)