> Markdown version of [/jobs/ext/3735302-software-qa-engineer-web-api-testing-senior-ts-sci-w-poly](https://www.wearedevelopers.com/jobs/ext/3735302-software-qa-engineer-web-api-testing-senior-ts-sci-w-poly). Every page supports `.md` or `Accept: text/markdown`. Links point to the HTML versions so they work for humans too. Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Software QA Engineer (Web & API Testing) - Senior | TS/SCI w/ Poly - **Company:** Falls Tech, Inc. - **Location:** Chantilly, VA, United States - **Experience:** Expert - **Salary:** $160,000.0 - $190,000.0 - **Contract:** Permanent contract - **Skills:** Testing (Software), Java (Programming Language), JavaScript (Programming Language), Application Programming Interfaces (APIs), Automation of Tests, Continuous Integration, Distributed Systems, Hypertext Transfer Protocols (HTTP), JSON, Python (Programming Language), Scrum Methodology, Swagger, Selenium, System Testing, Web Applications, Openapi, Scripting, Postman, Cypress (Programming Language), Api Design, Api Gateway, Restful APIs, Api Management, Jenkins - **Published:** October 14, 2026 - **Apply:** https://www.indeed.com/viewjob?jk=34a8c6a583c84bc3 ## About the Role * Active TS/SCI with Polygraph * 3+ years in software testing or QA * Hands-on testing of web applications and RESTful APIs (HTTP, JSON, API authentication) * Test automation with Cypress or an equivalent framework * Scripting in JavaScript (Python or Java also fine) * Experience on Agile/Scrum teams Nice to have * Testing distributed systems or API gateways * Selenium, Jenkins or other CI/CD tooling ## Description Mission software only works if it's tested like it matters. You'll own quality for web applications and API-driven systems that support a federal national-security mission, building automated coverage that lets the team ship with confidence. What you'll do * Test web applications end to end for functionality, performance and usability * Validate REST API endpoints behind API gateways using Postman and Swagger/OpenAPI * Build and maintain automated test suites in Cypress (or similar) and wire them into CI/CD * Run regression, integration and system testing across environments * Write clear defect reports and work with developers and product owners in Agile sprints