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# Penetration Tester

- **Company:** Integrity360
- **Location:** Madrid, Spain
- **Contract:** Permanent contract
- **Skills:** ASP.NET, Java (Programming Language), PHP (Programming Language), Microsoft Windows, Software System Penetration Testing, Automation of Tests, Border Gateway Protocol, C Sharp (Programming Language), Unix, C++ (Programming Language), Cloud Engineering, Code Review, Cyber Security, IPv6, Intrusion Detection and Prevention, Virtual Private Networks (VPN), Multi-protocol Systems, Python (Programming Language), Network Security, Visual Basic .NET (Programming Language), Routing, Open Shortest Path First (OSPF), Red Team (Cyber Security), Ruby, Information Technology Security Auditing, Security Information and Event Management, Software Engineering, Scripting, Information Security Management System, Computer Network Technologies, Firewalls (Computer Science), Information Technology, Vulnerability Analysis
- **Published:** July 21, 2026
- **Apply:** https://www.adzuna.es/contact-us.html

## About the Role

Solid experience in information security
Industry experience working in Dev/Admin/Engineer field
Industry experience working in Information security field as a penetration tester
Development and/or source code review experience in C/C++, C#, VB.NET, ASP, PHP, Java, Python or Ruby
Strong Unix, Windows and networking security skills
Familiarity with general application and network security concepts
Excellent communication skills
Manual penetration testing experience above and beyond running automated tools
Experience developing custom scripts or tools used for vulnerability scanning and identification
In depth networking knowledge (ports, protocols, firewalls, routing, VPN, MPLS, BGP, OSPF, IPv6, TOR)
Understanding of development frameworks
Broad understanding of hosting /cloud environment
Broad understanding of SIEM & Defensive Technologies.
Understanding of Security Auditing tools
Ethical hacking experience
Intrusion prevention experience
Report writing experience
Presentation skills
Scripting/coding, sys admin or networking experience
Understanding of programming methodologies
Understanding of quality management and project management principles
Knowledge of advance cloud architecture
Certifications/Qualifications
Security Clearance or local vetting (as required by region or client sector)
Relevant certifications such as OSCP, OSCE, OSEP, CRTO, CREST, or equivalent
Bachelor's degree in Computer Science, Cybersecurity, or related field (or equivalent hands-on experience)
#LI-JL1

## Description

We're looking for a Penetration Tester with at least 5 years of real-world professional experience, fully independent, with consultancy and tutoring skills and experience.
In this role, you'll support and deliver testing projects (web, infra, cloud, AD, and mobile and not limited to), guided by experienced technical leaders. You'll be involved in pre-sales activities, travelling onsite on customer environments and delivering high quality services.
Job Role / Responsibilities
As a Senior Security Tester, you will deliver advanced penetration testing and security assessments across a wide range of environments and technologies. You will also contribute to internal capability development, collaborate with other departments, and represent Integrity360 in client engagements and technical forums.
This role blends deep technical expertise with excellent communication and documentation skills.
Core Responsibilities:
Security Testing & Delivery
Perform advanced manual penetration tests and technical security assessments (web, mobile, infrastructure, cloud).
Execute Red Team or assumed breach engagements as part of a team or independently.
Identify, exploit, and document vulnerabilities in complex systems, clearly articulating risk and remediation to stakeholders.
Review application architectures and source code for security weaknesses.
Reporting & Communication
Produce high-quality technical reports and executive summaries tailored to various audiences.
Present findings to clients and internal stakeholders in a clear and professional manner.
Research & Innovation
Continuously research new vulnerabilities, attack techniques, and tools to stay ahead of evolving threats.
Contribute to the development of internal methodologies, tools, and automation scripts.
Internal Support & Mentoring
Act as a mentor for junior and mid-level testers, supporting their growth and development.
Support the testing team in delivery planning, documentation, and knowledge sharing.
Cross-Team Collaboration
Work closely with SDMs, Project Managers, and other technical teams to ensure smooth delivery.
Support Sales and Marketing teams with technical insights for proposals, events, or webinars when needed.
Desired Skills


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