Senior Offensive Security Tester

CyberShelter is seeking a Senior Offensive Security Tester to perform and oversee advanced security testing across applications, infrastructure, and cloud environments. As a senior member of the offensive security team, this role requires strong hands-on expertise in VAPT, red teaming exercises, and security assessments, along with leadership in task execution and mentorship of the testers. Key Responsibilities Conduct advanced vulnerability assessments and penetration tests on: Web applications, Mobile Apps (iOS/Android), APIs Network and infrastructure (on-prem and cloud) Thick client Execute red team exercises simulating real-world attack scenarios and lateral movement techniques. Perform source code reviews, threat modeling, and architecture review as required. Document findings with clear PoCs and detailed impact analysis for business stakeholders. Support the Offensive Security Lead in managing technical execution and ensuring adherence to methodology. Mentor and guide junior testers and analysts in tool usage, attack simulation, and reporting standards. Stay updated on emerging threats, exploits, and offensive tooling enhancements. Participate in client walkthroughs, support remediation discussions, and align assessments with business context. Qualifications Experience: 57 years of experience in offensive security testing, VAPT, or red teaming roles. Technical Skills: Strong understanding of OWASP Top 10, SANS/CWE, MITRE ATT&CK Familiarity with source code analysis and scripting (Python, Bash, PowerShell) Certifications: OSCP preferred; other certifications like eCPPT, CRTP, OSEP, or CREST Practitioner are a plus. Soft Skills: Good reporting skills, team collaboration, and attention to detail. Preferred Attributes Passionate about ethical hacking and continuous skill development Able to work independently on assigned tasks and manage priorities effectively Comfortable operating in a fast-paced, customer-facing environment Role & responsibilities