Senior Penetration Tester OSCP and CREST Certified

Company: Borderless CS Private Limited
Industry: Cybersecurity / Information Security
Job Location: India
Employment Type: Full-Time
Experience: min 6-10 Years
Department: Cybersecurity Offensive Security

Job Category: IT & Information Security

About Borderless CS

Borderless CS is an Australian-headquartered cybersecurity company providing professional security services to clients across Australia and the Asia-Pacific region.

We are a CREST-accredited cybersecurity organisation, specialising in penetration testing, vulnerability assessments, managed SOC/MDR, incident response and cybersecurity compliance.

We are looking for skilled, motivated and technically strong Penetration Testers holding OSCP and CREST certifications to join our growing cybersecurity team in India.

The successful candidates will work on challenging security assessments for Australian enterprise, government and commercial clients.

Key Responsibilities:

• Conduct comprehensive penetration testing of web applications, REST/GraphQL APIs, mobile applications, internal and external networks, and cloud environments.
• Perform manual security testing using OWASP WSTG, OWASP API Security Top 10, OWASP MASVS, PTES and recognised industry methodologies.
• Identify and validate vulnerabilities, including authentication bypass, broken access controls, IDOR/BOLA, injection, SSRF, privilege escalation and business logic flaws.
• Conduct Active Directory security assessments, internal network penetration testing and privilege escalation testing.
• Perform authenticated and unauthenticated security assessments.
• Use industry-standard tools including Burp Suite Professional, Nmap, Metasploit, Nessus, Nuclei, Wireshark and Kali Linux.
• Prepare high-quality technical penetration testing reports with clear evidence, risk ratings, business impact and remediation recommendations.
• Conduct vulnerability retesting and verify remediation effectiveness.
• Work closely with Australian project managers, technical leads and client stakeholders.
• Follow CREST testing methodologies, quality assurance processes and strict client confidentiality requirements.

Required Qualifications and Skills

• OSCP (OffSec Certified Professional) - Must
• CREST CRT/CCT certification. - Must
• Minimum 6 years of hands-on penetration testing experience.
• Strong practical experience in web application, API and Mobile penetration testing.
• Experience conducting infrastructure and network penetration testing.
• Strong knowledge of OWASP Top 10, CVSS, MITRE ATT&CK and common exploitation techniques.
• Proficiency in manual vulnerability identification, exploitation and validation.
• Ability to independently manage assigned penetration testing engagements.
• Excellent technical report-writing skills in English.
• Strong communication skills and ability to collaborate with Australian clients and internal teams.

Preferred Qualifications

• CREST Certified Tester (CCT) or CREST Registered Penetration Tester (CRT).
• OSCP, OSEP, OSWE, CRTO or equivalent offensive security certifications.
• Experience testing Android and iOS mobile applications.
• Experience with Azure, AWS, Microsoft Entra ID and Active Directory security assessments.
• Previous experience working for a CREST-accredited penetration testing organisation.
• Experience delivering penetration testing services for Australian enterprise or government clients.

What We Offer

• Opportunity to work with an internationally accredited cybersecurity organisation.
• Exposure to complex Australian enterprise and government security engagements.
• Career development and professional certification opportunities.
• Collaborative environment with experienced penetration testers and cybersecurity consultants.
• Opportunities to develop advanced offensive security skills.
• Competitive salary based on experience, technical capability and certifications.

How to Apply

Interested candidates should submit their updated CV, relevant professional certifications and a brief summary of their hands-on penetration testing experience.

Subject: Application Penetration Tester (OSCP / CREST Certified)

Join Borderless CS and build your career in offensive cybersecurity while supporting international clients.