> Markdown version of [/jobs/ext/177947-application-security-tester-seattle-wa-or-plano-tx-w2-only](https://www.wearedevelopers.com/jobs/ext/177947-application-security-tester-seattle-wa-or-plano-tx-w2-only). 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). --- # Application Security Tester| Seattle, WA or Plano, TX | W2 only - **Company:** Matlen Silver - **Location:** Plano, TX, United States - **Salary:** $124,800.0 - $135,200.0 - **Contract:** Temporary contract - **Skills:** User Authentication, Biometrics, Fiddler (Software), Identity and Access Management, Open Web Application Security, Public Key Infrastructure, Web Applications, Enterprise Software Applications, Software Security - **Published:** May 31, 2026 - **Apply:** https://www.indeed.com/viewjob?jk=2cb247ac5abf2d14 ## About the Role Do you have experience in Web applications?, * Security Engineer/Tester * Manual and automation experience * Focused on web based applications * Identify vulnerabilities and remediate them * Application security vulnerabilities: OWASP Top 10, SANS Top 25, CWE, attack patterns (CAPEC) * Security testing tool: Burp * Proxy tools: Fiddler, Black box * Identity and Access Management (IAM) * Authentication technologies: passwords, biometrics, OTP, digital certificates & PKI, device authentication, FIDO U2F/Passkeys * Large scale enterprise application background ## Related Videos - [Software Security 101: Secure Coding Basics](https://www.wearedevelopers.com/videos/220-software-security-101-secure-coding-basics) - [It's a (testing) trap! - Common testing pitfalls and how to solve them](https://www.wearedevelopers.com/videos/1193-it-s-a-testing-trap-common-testing-pitfalls-and-how-to-solve-them) - [Generate AI in the Browser with Chrome AI - Raymond Camden](https://www.wearedevelopers.com/videos/1770-generate-ai-in-the-browser-with-chrome-ai-raymond-camden) - [Biometric Phone Chargers, $40m Domain Names & AI Movies Winning Awards - Peter Kröner](https://www.wearedevelopers.com/videos/1810-biometric-phone-chargers-40m-domain-names-ai-movies-winning-awards-peter-kroner) - [Securing Your Web Application Pipeline From Intruders](https://www.wearedevelopers.com/videos/53-securing-your-web-application-pipeline-from-intruders) - [Going Beyond Passwords: The Future of User Authentication](https://www.wearedevelopers.com/videos/714-going-beyond-passwords-the-future-of-user-authentication) ## Related Articles - [The 8 Best Code Testing Tools](https://www.wearedevelopers.com/magazine/402-the-8-best-code-testing-tools) - [Understanding and Mitigating Common Web Vulnerabilities](https://www.wearedevelopers.com/magazine/565-understanding-and-mitigating-common-web-vulnerabilities) - [Dev Digest 121 - AI goes offline](https://www.wearedevelopers.com/magazine/456-dev-digest-121-ai-goes-offline) - [Dev Digest 134 - Where pixels sing?](https://www.wearedevelopers.com/magazine/477-dev-digest-134-where-pixels-sing) - [Events like RSAC Get You CISOs. Developers Decide What Actually Gets Deployed.](https://www.wearedevelopers.com/magazine/693-events-like-rsac-get-you-cisos-developers-decide-what-actually-gets-deployed) - [Dev Digest 138 - Are you secure about this?](https://www.wearedevelopers.com/magazine/486-dev-digest-138-are-you-secure-about-this)