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Deloitte

Audits companies and advises on tax and technology

Junior Penetration Tester

Offensive Security & TestingConfirmed live in the last 24 hours
Full-timeThessaloniki, GreeceNo salary listed

About the Job

Requirements

  • Academic background (BSc and MSc) related to Information Technology, Computer Science, Data Science, Business Informatics, or Engineering; business-background graduates with a major in Information Systems Management or another IT-related major are also welcome.
  • Ability to use office automation tools such as Microsoft Excel, Microsoft PowerPoint, and Microsoft Access.
  • Excellent command of Greek and English.
  • Strong interest in offensive security, demonstrated through active participation in capture-the-flag competitions such as Hack The Box or TryHackMe.
  • Theoretical knowledge of cloud, infrastructure, mobile, API, and web architectures from an offensive security and exploitation perspective.
  • Proficiency in scripting and code analysis, such as Python, Bash, or C#, for exploit automation and vulnerability testing.
  • Analytical mindset.
  • Good interpersonal and communication skills.
  • Ability to work in a team.
  • Client orientation.

Responsibilities

  • Identify vulnerabilities across web, mobile, API, and network infrastructures.
  • Follow structured methodologies such as the Open Web Application Security Project (OWASP) and the National Institute of Standards and Technology (NIST).
  • Map findings to the MITRE ATT&CK framework to demonstrate real-world impact.
  • Manually validate results to eliminate false positives.
  • Help clients understand how to effectively patch and mitigate identified risks.

Desired Qualifications

  • Very good knowledge of Italian and other languages.
  • Relevant certifications such as Offensive Security Certified Professional (OSCP), Certified Penetration Testing Specialist (CPTS), or Burp Suite Certified Practitioner (BSCP).

About the Company

Deloitte

Audits companies and advises on tax and technology

Deloitte audits companies and advises businesses and governments on tax, technology, and risk, and it is one of the Big Four, the world's four largest accounting firms. In 1849 its founder became the first independent auditor of a public company, Britain's Great Western Railway. Its auditors check companies' financial reports for errors and fraud before investors rely on them, while its consultants design strategy, install business software, and defend clients against cyberattacks. Clients pay fees for each audit or project, and each country's Deloitte firm is a separate business owned by its local partners. Deloitte was founded in London in 1845 and is based in New York.

Company size
10,001+
Company stage
Late Stage VC
Total funding
$17.1M
Headquarters
New York, NY
Founded
1845

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