Hybrid Linux Security Support Engineer (18-Month Contract)

83zero; Madrid; Hybrid; EUR 52,000 - 76,000; Full time

Job summary

83zero Ltd is seeking a Linux Technical Support Engineer in Madrid, Spain, on an 18-month initial contract with a strong extension potential. The role is hybrid and requires deep Linux expertise, cybersecurity knowledge, and excellent troubleshooting and communication skills to support enterprise customers across EMEA.

Training on the SOAR platform (Cortex/XSOAR) will be provided, and experience with Cortex technologies is highly desirable but not essential.

Qualifications

• Strong Linux troubleshooting and debugging skills.
• Solid cybersecurity background and understanding of security environments.
• Good networking fundamentals and ability to troubleshoot complex issues.
• Experience in enterprise customer support and escalations.
• Fluent English spoken and written for international customers.

Responsibilities

• Provide advanced Linux technical support to external enterprise customers.
• Investigate and resolve complex issues across Linux OS, applications and networking.
• Manage support cases from initial investigation to resolution within SLAs.
• Diagnose issues using root cause analysis and debugging.
• Troubleshoot configuration and infrastructure-related problems.
• Collaborate with Engineering to resolve escalated issues.

Skills

Linux expertise

Cybersecurity knowledge

Networking fundamentals

Technical support

SOAR (Cortex XSOAR)

English fluency

Tools

Cortex XSOAR

Job description

83zero Ltd is seeking a Linux Technical Support Engineer in Madrid, Spain, on an 18-month initial contract with a strong extension potential. The role is hybrid and requires deep Linux expertise, cybersecurity knowledge, and excellent troubleshooting and communication skills to support enterprise customers across EMEA.

Training on the SOAR platform (Cortex/XSOAR) will be provided, and experience with Cortex technologies is highly desirable but not essential.