Senior Security Engineer (L3)

Job Description:

DXC Technology is a global professional services company whose mission is to lead the digital transformation of our clients by advising and guiding them in the application of technology to obtain the best results and increase the competitiveness of their companies. With more than 130,000 professionals and expert technologists, collaborating in more than 70 countries together with an exceptional network of partners, we offer advanced IT services and solutions.

In Spain, we are one of the main leaders in the IT market. We have nearly 8,000 professionals, distributed in thirteen locations, with centers of excellence in cutting-edge technologies such as Cloud, Business Intelligence, AI, or Automation among many others, serving more than 200 customers from all industries in the public and private sectors. We work with leading companies in the country that trust us to guide their digital transformation.

We develop active policies of diversity and inclusion of people with disabilities, and we are proud to have a representation of approximately 49% of female professionals.

At DXC Spain we are looking for a Security Engineer.

Roles & Responsibilities

• Act as L3 technical reference within the SOC and managed security services

• Handle and resolve complex cybersecurity incidents (L3 level)

• Design, evolve and harden security architectures (on-premise and cloud)

• Participate in cybersecurity projects (deployments, migrations, improvements)

• Manage and optimize advanced security technologies, including:

  • EDR/XDR (e.g. SentinelOne, CrowdStrike, Microsoft Defender)

  • SIEM/SOAR (e.g. Sentinel, Splunk, QRadar)

  • Firewalls/WAF (e.g. Fortinet, Palo Alto)

  • SASE / SWG / CASB (e.g. Netskope, Zscaler)

• Support service transitions and implementation of new security capabilities

• Act as escalation point for L1/L2 teams and provide technical mentorship

• Engage with clients (workshops, troubleshooting, reporting)

• Contribute to the implementation of security solutions in client environments

• Participate in on-call rotations when required

Required Skills

• +7–10 years of experience in cybersecurity

• Previous experience as:  L3 SOC / Senior Security Engineer, or Technical Security Architect / Consultant (hands-on)

• Strong hands-on experience across:

  • Design, implementation and operation of security solutions

  • Enterprise environments, multi-client setups or MSSP

• Solid knowledge in several of the following areas:

  • Network Security (Firewalls, IDS/IPS)

  • Endpoint Security (EDR/XDR)

  • SASE / Cloud Security (Netskope, Zscaler, CASB)

  • Public Cloud (Azure, AWS, GCP)

  • Security across IaaS, PaaS, SaaS environments

  • Microsegmentation (e.g. Guardicore)

  • Infrastructure as Code / automation

• Strong analytical and problem-solving skills

• Ability to work in complex environments and manage multiple priorities

• Customer-oriented mindset and strong communication skills

• Proactive, autonomous and team-oriented attitude

• English level B2+

What will you find at DXC?

• Professional development.

• Leading projects for market reference clients.

• Excellent work environment.

• Flexibility and work-life balance.

• Work with leading technologies within the IT sector.

• Access to DXC University with unlimited certifications.

• Social and responsible commitment.

• Stable employment.

• Social benefits.

At DXC Technology, we believe strong connections and community are key to our success. Our work model prioritizes in-person collaboration while offering flexibility to support wellbeing, productivity, individual work styles, and life circumstances. We’re committed to fostering an inclusive environment where everyone can thrive.

Recruitment fraud is a scheme in which fictitious job opportunities are offered to job seekers typically through online services, such as false websites, or through unsolicited emails claiming to be from the company. These emails may request recipients to provide personal information or to make payments as part of their illegitimate recruiting process. DXC does not make offers of employment via social media networks and DXC never asks for any money or payments from applicants at any point in the recruitment process, nor ask a job seeker to purchase IT or other equipment on our behalf. More information on employment scams is available here.