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Senior Penetration Tester (Offensive Security)

GMV • Spain
Relocation
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AI Summary

Lead and execute advanced offensive security assessments across web, mobile, network, cloud, and AI systems. Design realistic attack scenarios using MITRE ATT&CK and manage full audit projects from scoping to delivery. Require 5+ years of penetration testing experience, Red Team expertise, and strong scripting skills.

Key Highlights
Design and lead complex penetration tests and Red Team exercises
Develop offensive tools and automations using Python, Bash, or PowerShell
Produce technical and executive reports and present findings to diverse audiences
Key Responsibilities
Execute and lead penetration tests in complex corporate environments.
Design realistic attack scenarios based on MITRE ATT&CK tactics, techniques, and procedures.
Participate in Red Team exercises, applying evasion techniques against EDR, XDR, WAF, and antivirus solutions.
Identify vulnerabilities, analyze impact, and propose effective mitigation strategies.
Develop or adapt offensive tools and automations using Python, Bash, or PowerShell.
Produce clear technical and executive reports focused on risk.
Present findings to both technical and business audiences.
Manage technical audit projects, coordinating scope, timelines, and deliverables.

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Technical Skills Required
Penetration Testing Python Red Team Operations
Benefits & Perks
Hybrid working model with 8 weeks of teleworking per year
Competitive compensation with regular reviews and flexible components
Comprehensive health, dental and accident insurance plus wellbeing program

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Nice to Have
Offensive security certifications such as OSCP, OSEP, OSWE, eCPPT, or CRTP
Knowledge of frameworks and methodologies like PTES, MITRE ATT&CK, and OWASP
Experience assessing security in AI or LLM-based systems

Job Description

Do you want to participate in advanced offensive security assessments? The GMV Technical Audits team is looking for you!We´ll get to the point; we'll tell you what's not on the web. If you want to know more about de GMVAs a , you will not only execute technical assessments but also design realistic attack scenarios based on MITRE ATT&CK TTPs and lead audit projects, helping organizations understand how they could be compromised… before a real attacker does.You will work on web and You will also participate in exercises, simulating real attacks and collaborating with Blue Team professionals to improve threat detection and response capabilities.In your day-to-day work you will:
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Job Overview
Posted Date Sep 28, 2026
Employment Type Full-time
Experience Level Not Applicable
Location Spain
Category Programming
Company GMV
Mentioned Skills
python ai gcp oscp penetration testing active directory owasp aws bash cloud powershell cybersecurity metasploit nmap burp suite

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