Defensive security engineer in detection and response

Since 2011, SQUAD Group has been a key player in the cybersecurity landscape. We partner with leading organizations to protect their information systems through a comprehensive 360° offering of consulting, integration, expertise, and managed services. Our mission: Securing Together! We believe in a collaborative approach to cybersecurity, where experts and clients work hand-in-hand to anticipate threats and protect critical infrastructure. As part of our growing team, we’re looking for a Senior Defensive Security Engineer based in Barcelona. You’ll join the security operations team of a major international digital player, helping take its defensive capabilities to the next level.

• Build automations and integrations that speed up day-to-day operations and incident handling.
• Own and optimize the defensive security stack so it stays reliable and scales with the business.
• Improve alert quality by cutting noise and closing detection gaps.
• Design dashboards and KPIs that show the health and effectiveness of security operations.
• Partner with security and engineering teams to strengthen protection and response across the organization.
• Support and coach less experienced team members.

• 5+ years in security operations, SOC engineering, or detection and response.
• Hands-on experience running incidents from first alert through to lessons learned.
• Strong expertise with SIEM/XDR solutions, including detection rule writing and tuning.
• Experience turning threat intelligence into actionable detections, with good knowledge of MITRE ATT&CK.
• Practical experience with DLP policies.
• Solid coding skills in Python or Go, with experience working with APIs and SOAR automation.
• Ability to explain technical risks clearly to both engineers and leadership.
• Fluent English.
• Будет плюсом: GIAC GCIH / GCIA / GCDA, BTL2, or vendor certifications on major SIEM/XDR platforms

• Personalized Growth: We help you build a training and certification plan aligned with your professional goals through our SquadeXpérience.
• Expertise Development: Participate in internal events like our MixYourTalent webinars and monthly CTF sessions.
• Visibility: Attend major industry conferences and contribute to our #TheExpert technical blog.
• Culture: Enjoy a dynamic and close-knit environment with after-work events and team gatherings that foster great camaraderie.