Penetration Tester

Andersen Lab; Polska; Hybrid; PLN 120,000 - 190,000; Full time

Benefits offered by this job

Private health insurance

Sports compensation

Remote/hybrid work options

Job summary

Andersen Lab is seeking a seasoned Penetration Tester to strengthen cybersecurity for a multinational project. You will identify vulnerabilities across web apps, APIs, networks, Active Directory, and cloud environments, and help mitigate risks.

You will work with SOC teams, produce clear reports for technical and executive audiences, and support remediation and retesting. Remote and hybrid work options are available, with opportunities to grow through mentoring, training, and a competitive bonus

Qualifications

• 5+ years in cybersecurity with 3+ years hands-on pentesting.

Responsibilities

• Plan and conduct penetration tests of web apps, APIs, networks, AD, and cloud environments.
• Perform manual testing beyond automated scans, including exploitation within rules of engagement.
• Validate findings and produce technical and executive reports.
• Present results to system owners and management and support remediation and retesting.
• Contribute to red/purple teaming exercises with SOC/detection teams.
• Maintain testing methodologies, tools and templates.

Skills

Penetration testing

Web application testing

API testing

OWASP Top 10

Active Directory attacks

Security tooling

Scripting (Python, PowerShell, Bash)

Certification awareness

Education

Hands-on certifications (OSCP/OSWE/OSEP/CRTO/eWPTX/GPEN/GWAPT)

Tools

Burp Suite Pro

Nmap

Metasploit

BloodHound

Impacket

Job description

Andersen is hiring a Penetration Tester for a project strengthening cybersecurity, identifying vulnerabilities, and mitigating security risks across complex digital environments.

Our customer is a technology and consulting organization providing digital infrastructure, cloud services, cybersecurity, data-driven solutions, and managed IT support. It helps organizations modernize complex technology environments, strengthen security, and improve the reliability and scalability of their digital operations. By combining technical expertise with modern technologies and service-oriented delivery, the company supports digital transformation, operational efficiency, and the continuous improvement of critical IT systems across multiple markets.

The project is focused on providing cybersecurity and digital services for international organizations within a large, heterogeneous, multi-tenant environment. It includes developing and strengthening vulnerability management capabilities to identify, assess, prioritize, and mitigate security risks across multiple organizations worldwide.

Responsibilities:

• Planning and performing penetration tests of web applications, APIs, internal and external networks, Active Directory and cloud environments.
• Carrying out manual testing beyond automated scanning, including exploitation and privilege escalation within the agreed rules of engagement.
• Validating findings, assessing business risk and producing clear technical and executive reports.
• Presenting results to system owners and management, and supporting remediation and retesting.
• Contributing to red teaming or purple teaming exercises with SOC and detection teams.
• Maintaining testing methodologies, tools and templates.

Requirements:

• Experience in cybersecurity for 5+ years, including 3+ years in hands‑on penetration testing.
• Experience with web application and API testing according to OWASP (Top 10, WSTG, ASVS).
• Experience conducting internal and external infrastructure testing, including Active Directory attacks
• Working knowledge of standard tools (Burp Suite Pro, Nmap, Metasploit, BloodHound, Impacket, etc.).
• At least one recognized hands‑on certification: OSCP, OSWE, OSEP, CRTO, eWPTX, GPEN or GWAPT.
• Clean professional records and willingness to undergo background verification.
• Level of English – from Upper-Intermediate and above.

Nice‑to‑haves:

• Hands‑on experience with cloud penetration testing (Azure, Microsoft 365, AWS).
• Experience with mobile application testing (Android, iOS).
• Red Teaming or Purple Teaming experience, including familiarity with C2 frameworks.
• Strong scripting and security tooling skills (Python, PowerShell, Bash).
• Experience with PTES, OSSTMM or NIST SP 800-115 methodologies.
• Proven security research track record, such as published CVEs or recognized bug bounty findings.

Reasons why this job would be interesting to you:

• Experience in teamwork with leaders in FinTech, Healthcare, Retail, Telecom, and others. Andersen cooperates with such businesses as Samsung, Siemens, Johnson & Johnson, BNP Paribas, Ryanair, Mercedes, TUI, Verivox, Allianz, T-Systems, etc..
• The opportunity to change the project and/or develop expertise in an interesting business domain.
• Job conditions – you can work both fully remote and from the office or can choose a hybrid variant.
• Guarantee of professional, financial, and career growth! The company has introduced systems of mentoring and adaptation for each new employee.
• The opportunity to earn up to an additional 1,000 EUR per month, depending on the level of expertise, which will be included in the annual bonus, by participating in the company's activities.
• Access to the corporate training portal, where the entire knowledge base of the company is collected and which is constantly updated.
• Referral program.
• Private health insurance and sports compensation, depending on the type of employment.

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