Senior Offensive Security Engineer; web & Api

Puesto: Senior Offensive Security Engineer (web & Api)
Senior Offensive Security Engineer (Web & API)
Contract
About You
You are an experienced offensive security professional with strong manual penetration testing expertise and a disciplined approach to testing production environments. You validate vulnerabilities through controlled exploitation attempts and produce clear, reproducible evidence.

You are comfortable testing web applications, REST/SOAP APIs, and applications protected by enterprise SSO. You understand how to assess authorization across roles and accounts, identify exploitable weaknesses, and explain their impact.

Note:

This role operates under a contractor model for an initial period of 2 months, with the possibility of extension.
You Bring to Applaudo the Following

Competencies:

Bachelor’s Degree in Computer Science, Cybersecurity, Software Engineering, or a related field is desired, or equivalent professional experience.
5+ years of hands on penetration testing experience, including 3+ years testing web applications and APIs in production environments.
Manual web application penetration testing following OWASP WSTG and the OWASP Top 10.
API security testing following the OWASP API Security Top 10, including BOLA/IDOR and broken function level authorization.
SOAP and WSDL web service testing using Burp Suite, Soap UI or an equivalent tool.
Burp Suite Professional as your primary tool, including extensions and custom payloads.
Experience testing applications protected by SSO with OAuth 2.0, Open  and SAML on Microsoft Entra .
Multi role and multi account authorization testing methodology.
External reconnaissance and attack surface enumeration using Amass, subfinder, httpx, Nmap or equivalent tooling.
Proven ability to test safely in production, applying rate control, test records and defined stop conditions.
CVSS v3.1 scoring and regulator ready reporting supported by reproducible evidence.
Strict adherence to rules of engagement, stopping and escalating within one hour when a stop condition is met.
Documentation discipline that records every attempt, successful or not, so results stand up to regulatory review.
Commitment to collecting only the minimum evidence required and masking nonpublic information in all deliverables.
Strong spoken and written English (B2+) to document findings and weekly status reports and to join live working sessions with a U. S. based security team. Nice to haves:
Experience testing Java EE and JSF enterprise applications, such as loan servicing or core lending platforms.
Experience testing ASP. NET web applications and APIs.

Experience with Azure API Management, Application Gateway or Front Door WAF.
Experience testing payment, e signature and webhook or callback integrations.
Python or Bash scripting to automate test cases.
Prior participation in regulatory penetration tests under NYDFS Part 500, PCI DSS 11.4 or FFIEC.
Offensive security certification such as OSCP, OSWE, GWAPT, GPEN, GXPN or BSCP. You Will Be Accountable for the Following Responsibilities:
Perform outside unauthenticated testing of in scope web applications, REST and SOAP APIs, an API gateway and internet exposed hosts.
Perform inside testing from client provided accounts, covering cross role and cross account authorization, privilege escalation and access beyond the assigned role.
Discover API specifications such as Open API, WSDL and Postman collections for REST and SOAP services before testing when required.
Base every finding on an exploitation attempt and record its result, listing scan only items separately as untested.
Test all authorized in scope assets, or document the reason for exclusion when client side dependencies are not met.
Execute all testing without causing service disruption or data loss, escalating stop conditions within one hour.
Score…