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Inetum

Global IT services for digital transformation

Penetration Testing Engineer 1

Offensive Security & TestingConfirmed live in the last 24 hours
Full-timeNo salary listed

About the Job

Requirements

  • A degree in Computer Science, IT Security, or a comparable qualification.
  • Several years of experience in Information Security, Offensive Security, Penetration Testing, or Red Teaming.
  • Hands-on experience conducting penetration tests against heterogeneous enterprise infrastructure environments, including Active Directory Security and Microsoft Entra ID; LAN, WAN, and WLAN networks; Windows, Mac, and Linux; in-house and public-facing web applications; APIs; in-house cloud security using OpenStack, Kubernetes, and containerized environments; and cloud security using AWS, Azure, and M365.
  • A strong understanding of modern attack techniques and adversary tactics.
  • Practical knowledge of common penetration testing methodologies and frameworks.
  • Experience creating technical reports and presenting findings to stakeholders.
  • Fluent written and spoken English and Polish at a minimum B2 level.

Responsibilities

  • Conduct penetration tests of internal infrastructure, environments, and internet-facing web applications.
  • Perform authentication, authorization, business logic, and API security assessments.
  • Identify, validate, and document security vulnerabilities based on industry standards such as OWASP Top 10 and MITRE ATT&CK.
  • Assess network, system, and application security controls.
  • Conduct security reviews of cloud-native and distributed architectures, in-house cloud architectures, and the physical security of company sites.
  • Audit complex enterprise infrastructures, including Kubernetes environments, OpenStack platforms, Apache Kafka ecosystems, Active Directory, Microsoft Entra ID, WAN and LAN network infrastructures, Linux and Windows server environments, and hybrid cloud and on-premise architectures.
  • Report and present findings, risk assessments, and remediation recommendations to technical and management stakeholders.
  • Document penetration tests, security assessments, and audit results.
  • Plan and execute internal red team engagements simulating realistic threat actor behavior.
  • Conduct attack path analysis, privilege escalation assessments, social engineering, credential compromise, and lateral movement scenarios.
  • Support remediation activities and security architecture improvements.
  • Collaborate with system owners, platform teams, and developers to address identified weaknesses.
  • Participate in security architecture reviews and technical design discussions.
  • Work closely with IT, network, and application teams to identify security gaps and recommend improvements.
  • Develop and maintain testing methodologies, attack playbooks, and automation scripts.
  • Contribute to the continuous improvement of offensive security capabilities and tooling.
  • Support compliance requirements such as ISO 27001, NIS2, and industry-specific security frameworks.
  • Provide technical expertise for security-related projects and initiatives.
  • Contribute to security awareness by sharing attack techniques, lessons learned, and best practices.

About the Company

Inetum

Global IT services for digital transformation

Inetum provides IT services for digital transformation in 26 countries, serving enterprises, SMEs, and public sector clients. It offers cybersecurity, cloud computing, predictive maintenance, and augmented reality, delivered through consulting, managed services, and proprietary software. It differentiates itself through a broad service portfolio, strategic partnerships with Microsoft and Sage, and a focus on tailoring solutions to fit each client’s needs. Its goal is to help clients adapt to a changing digital landscape, improving business agility and creating economic, managerial, and social opportunities.

Company size
1,001-5,000
Company stage
IPO
Headquarters
Saint-Ouen, France
Founded
1995

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