Invadel

Senior Penetration Tester (Web and API), Contract

United States full-time Mid $175,000 - $265,000
full-time Mid level Technology & IT Salary listed Curated
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About the role

Invadel is a New York City penetration testing firm. Every engagement is fixed-scope and fixed-price, agreed in writing, with public prices at invadel.com/pricing and a free retest. This is a contract role, remote within the United States, paid per engagement; a typical engagement is five to ten testing days plus a retest, scheduled around your availability.
What you will do: lead manual web application and API penetration tests across every user role (authorization, authentication and sessions, injection, business logic, SSRF, file handling and deserialization); confirm or discard every automated result by hand and chain findings to prove impact safely; escalate critical findings the day they are confirmed; write the report (executive summary, findings with reproduction steps and CVSS scores, prioritized remediation, framework mapping); retest remediated findings.
What we need: five or more years of hands-on application penetration testing, mostly web and API; depth on at least one modern stack (single-page applications, GraphQL, OAuth and OIDC, multi-tenant SaaS); based in the United States with authorization to work here; reports written for engineers and auditors, with a redacted sample report as part of the application; two professional references.
Nice to have: mobile (MASVS and MASTG) or cloud testing on AWS, Azure or GCP; published research, tooling or disclosed vulnerabilities. An offensive security certification is welcome; it does not replace a verifiable engagement record.
Full description, pay range and application:
Originally posted on Himalayas

Interview prep

Walk in with sharper answers.

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Mid
Technology & IT API integration Remote Collaboration Writing Senior Penetration Mid level

Likely questions

  1. Tell us about work you have done that is close to the Senior Penetration Tester (Web and API), Contract role.
  2. How would you approach your first 30 days at Invadel?
  3. Which of API integration, Remote Collaboration and Writing have you used recently, and what did it help you achieve?
  4. Describe a time you solved a problem without waiting to be told exactly what to do.
  5. How do you handle busy days, changing priorities, or pressure at work?

Prepare before the call

  • A recent example that proves your experience with API integration, Remote Collaboration and Writing.
  • One short story with a problem, your action, and the result.
  • Two examples that show the strengths listed on your CV.
  • A clear reason why this role and company interest you.
  • Your availability, preferred work style, and salary expectations.

Ask them

  • What would success look like in the first 90 days?
  • What are the main problems this hire should help solve?
  • How does the team give feedback and measure good work?
  • What does a normal working week look like for this role?
Practice line

I am interested in the Senior Penetration Tester (Web and API), Contract role because I can bring practical experience in API integration, Remote Collaboration and Writing, learn the team quickly, and contribute to the outcomes Invadel needs from this hire.

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