Senior Security Penetration Tester | Data Engineer

A1 TELEKOM AUSTRIA Aktiengesellschaft

Wien,Leopoldstadt, Wien, Österreich
Published Apr 27, 2026
Full-time
Permanent

Job Summary

As a Senior Security Penetration Tester, you will join the IT & Cyber Security team to perform internal and external penetration tests for both clients and internal solutions. Your day-to-day responsibilities include analyzing and evaluating security concepts and architectures, documenting vulnerabilities, exploits, and incidents, and developing internal tools to streamline the pentesting process. You will also provide actionable solutions to mitigate security risks and support client-facing teams during meetings and presentations. This role is ideal for a security professional who is passionate about building a new business area within a dynamic company. You will work in a collaborative environment, engaging closely with other security specialists to ensure the highest standards of protection. The position offers significant autonomy, a focus on constant learning, and the opportunity to influence security strategies while working with modern tools and methodologies. If you are a client-oriented communicator with a strong technical background in security, this role provides a unique environment to advance your career.

Required Skills

Education

Not specified

Experience

  • Minimum 3 years of professional experience in penetration testing.
  • Professional experience in IT security, including roles within a Penetration Test Team, CIRT, CERT, or SOC.
  • Experience assessing web applications and Windows environments, specifically Active Directory.
  • Experience with industry-standard penetration testing tools and application security frameworks like OWASP.

Languages

German (Fluent)English (Fluent)

Additional

  • Willingness to travel required.