> Markdown version of [/jobs/ext/4254106-lead-web-application-penetration-tester-onsite](https://www.wearedevelopers.com/jobs/ext/4254106-lead-web-application-penetration-tester-onsite). 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). --- # Lead Web Application Penetration Tester- Onsite - **Company:** Calance Consulting Corporation - **Location:** Matthews, NC, United States - **Experience:** Expert - **Salary:** $124,800.0 - $145,600.0 - **Contract:** Permanent contract - **Skills:** Testing (Software), Application Programming Interfaces (APIs), Business Logic, Software System Penetration Testing, User Authentication, Automation of Tests, Burp Suite, Data Validation, Open Web Application Security, Session Management, Web Applications, Software Security, Rate Limiting, GWAPT, Graphql, Web Architecture, Static Application Security Testing, Web Api, Dynamic Application Security Testing - **Published:** October 13, 2026 - **Apply:** https://www.indeed.com/viewjob?jk=c68649c9810ef16c ## About the Role Strong experience in web application penetration testing Demonstrated proficiency with Burp Suite and related offensive testing tools. Solid understanding of the OWASP Top 10 and OWASP API Security Top 10. Experience testing REST and/or GraphQL APIs. Strong knowledge of authentication, authorization, cookies, tokens, session management, and modern web architecture. Excellent report writing, remediation advisory, and communication skills. Ability to work independently and lead assessments from scoping through delivery. Knowledge of SAST, DAST, SCA, and API security tooling. Relevant certifications such as OSCP, OSEP, GWAPT, or equivalent. ## Description We are seeking an experienced Advanced Web Application Penetration Tester to lead security assessments of modern web applications and APIs. This role will focus on uncovering vulnerabilities in application logic, authentication and authorization controls, API endpoints, session handling, and other attack paths commonly targeted in real-world engagements. The ideal candidate is highly skilled in manual testing, has deep experience with tools such as Burp Suite and other OWASP-aligned testing utilities, and can combine automated and human-led techniques to identify high-impact risks, Lead and execute advanced penetration tests against web applications, APIs, and related services. Test complex business workflows such as user onboarding, checkout/cart flows, account recovery, role escalation, payment actions, and transaction handling. Perform manual and automated testing using Burp Suite, OWASP tools, and other security testing utilities. Analyze and attack API security issues, including object-level authorization, function-level authorization, mass assignment, excessive data exposure, and broken object references. Identify weaknesses in rate limiting, input validation, error handling, file upload processing, and trust boundaries. Perform reconnaissance and application mapping to identify endpoints, parameters, hidden functionality, and exposed surfaces. Enumerate and test user roles, permissions, and privilege boundaries. Probe for broken session management, token handling issues, and weak logout / session invalidation behavior. Test input handling for client-side and server-side validation issues, including edge cases and error-based disclosures. Provide remediation advisory to application owners, developers, and security stakeholders on how to address identified findings.