Lead Web Application Penetration Tester- Onsite

Advanced Web Application Penetration Tester
Role Summary
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

Key Responsibilities
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.

Required Qualifications

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.