Security Analyst - Tier 1

About the role

Stimulating. Motivating. Challenging.

Leveraging its long-standing expertise in securing digital content as well as fighting piracy, Kudelski Security, a division of the Kudelski Group, is a provider of cybersecurity solutions and services focused on protecting data, processes and systems for companies and organizations around the world, safeguarding their assets at a time of increasingly remote communications.

Security Analyst - Tier 1.

Mission

Your Mission

As a Security Analyst Level 1, you are the first line of defense within our 24x7 Managed Detection & Response (MDR) operations, part of the Cyber Fusion Center (CFC) / SOC. Your mission is to monitor, triage, and validate security alerts, ensuring timely escalation of confirmed threats while maintaining high operational quality across a multi-client SOC environment.

What you'll do

1. General responsibilities

• Monitor and triage security alerts generated by SIEM, EDR/XDR, firewalls, ICS/OT, and other security technologies to determine if further investigation or customer action is warranted.
• Perform first-level incident analysis, validation, and classification following SOPs and playbooks.
• Escalate confirmed, suspicious, or complex incidents to Tier 2 with clear, structured, and complete documentation (what happened, evidence, scope, actions taken, recommended next steps).
• Respond to alerts and tickets within defined SLAs and document all investigation steps accurately in the ticketing system.
• Adhere to internal policies, procedures, and security best practices to protect customer and company data.
• Participate in shift handovers, ensuring continuity of investigations and clear ownership of next actions.
• Contribute to customer satisfaction by handling customer interactions professionally, communicating critical findings, providing accurate information, and ensuring requests are routed to the appropriate teams for timely resolution and support.
• Maintain strong operational discipline: correct priority, categorization, and documentation standards.

2. Threat monitoring & incident handling

• Validate alert fidelity by reviewing available telemetry, context, and enrichment to separate false positives from true security events.
• Perform initial scoping (impacted host/user, time window, key indicators, related alerts) using approved tools and data sources.
• Apply predefined containment or response actions only when explicitly authorized by procedures and customer runbooks.
• Collect and preserve relevant artifacts (e.g., alert context, event IDs, process names, hashes, IPs/domains) to support Tier 2 investigations.
• Support ongoing investigations by providing timely updates and evidence to senior analysts.
• Use approved AI tools to summarize alerts, logs, and timelines to accelerate triage.
• Use AI-assisted enrichment to understand unfamiliar indicators, techniques, or tool outputs.
• Identify recurring false positives, noisy detections, and tooling limitations; raise improvement suggestions through defined channels.

What we're looking for

Requirements / Profile

You are

• A team-oriented analyst comfortable working in a structured, high-tempo SOC environment.
• Methodical and detail-oriented, able to remain calm under pressure and manage multiple alerts in parallel.
• Curious and motivated to learn cybersecurity operations and modern SOC tooling.
• Clear and professional in written and verbal communication.
• Willing to work in a 24/7 shift-based operation.

You have

• More than 1 year of experience in cybersecurity, IT operations, or a related field (internships, labs, or SOC trainings), typically analyzing logs and host data to identify suspicious/abnormal activity.
• Initial to intermediate exposure to SIEM and/or EDR/XDR platforms for log analysis and detection.
• Understanding of TCP/IP, security architecture, adversary TTPs, common web attacks, and the MITRE ATT&CK framework.
• Familiarity with incident response methodologies (NIST/SANS) and fundamentals in networking and operating systems (Windows/Linux).
• Understanding of appropriate AI usage in security contexts.
• Basic knowledge of OT and its core concepts.
• Strong verbal and written communication skills for documenting findings, escalating incidents, and collaborating with customers.
• Fluent in English and Spanish (written and verbal).

Nice to have

• Nice to have: CompTIA Security+, CySA+, CEH, or BTL1 (or actively pursuing).

What you'll get

With Kudelski, you can expect

• Hands-on experience in a global MDR operation with top-tier security tooling.
• Structured progression path and coaching towards other roles.
• Training and certification opportunities.
• Competitive compensation and benefits (including shift compensation/paid overtime, meal allowance, life insurance, health insurance, pension plan, and flexible compensation options).
• Inclusive, collaborative culture in an international environment.

How you'll work

Location : Madrid, Spain

You will operate within clearly defined procedures, using modern security tooling and AI-assisted workflows to improve investigation efficiency, documentation quality, and learning velocity-while adhering strictly to escalation paths, data-handling rules, and security policies. You are based in Madrid, Spain, working a 24/7 shift rotation (morning, evening, night, and weekends) in a permanent, full-time role, reporting to the SOC Manager within a team of 15-20 L1 Analysts.

About the company & team

About Kudelski Security

Kudelski Security is a global Gartner- and Forrester-recognized provider of unique cybersecurity solutions. Our team of security experts delivers end-to-end consulting, technology, managed services, and threat intelligence.

Our MDR/XDR services feature three global state-of-the-art SOCs delivering tailored, intelligence-driven protection. With 2M+ users secured and a leadership team that has built top-tier MSSPs, we provide unmatched expertise to help organizations stay ahead of threats and build strategic cybersecurity programs.

Reference

Reference : 15806
Publication Date : 18-08-2026

Additional information

Kudelski Security is an equal opportunity employer. We are committed to creating an inclusive workplace where all individuals are treated fairly and respectfully.

Reference : 15806
Publication Date : 18-08-2026