Pentester

Cyber Defence is a fast-growing cybersecurity company on a mission to protect digital assets and build client trust through robust, ethical, and forward-thinking cyber practices. From our office in Pueblo Nuevo, we serve clients across the UK, Spain, and beyond, working with CREST-certified practices and delivering government-grade security services. <https://cyber-defence.io/>

What You’ll Be Doing

As a Pentester at Cyber Defence, you'll play a key role in simulating attacks to identify system vulnerabilities across networks, applications, and cloud infrastructure. This is a hands-on technical role with a strategic impact on our clients' resilience and regulatory compliance.

• Plan and execute manual and automated penetration tests across web apps, networks, and APIs.
• Perform internal and external vulnerability assessments.
• Create comprehensive reports on findings with clear mitigation guidance.
• Collaborate with SOC Analysts, DevSecOps, and IT teams to implement remediations.
• Stay updated on the latest attack vectors and security research.
• Support Red Team and Purple Team exercises.
• Assist with incident response investigations when needed.

Must-Haves

• 3+ years of experience in penetration testing or offensive security.
• Strong understanding of common vulnerabilities (OWASP Top 10, MITRE ATT&CK).
• Proficiency in tools such as Burp Suite, Nmap, Metasploit, Nessus, and Wireshark.
• Experience with scripting languages (Python, Bash, PowerShell).
• Excellent written and verbal communication (English).
• Eligibility to work in Spain and occasional travel if required.

Nice-to-Haves

• CREST CRT or equivalent (OSCP, OSWE, CEH, etc.).
• Experience with cloud pentesting (AWS, Azure, GCP).
• Familiarity with compliance standards (ISO 27001, GDPR, NIST, PCI DSS).
• English & Spanish language skills.

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• Be part of a mission-driven cybersecurity firm with global impact.
• Work alongside CREST-certified experts and forward-thinking leadership.
• Professional development budget & certification support.
• On-site work with flexibility (based out of Pueblo Nuevo office).
• Vibrant office culture near the coast – good vibes only!