Senior Information Security Engineer

Senior Information Security Engineer

Madrid, Spain

One Trust's mission is to enable innovation through the responsible use of data and AI. We believe that ensuring data is trusted shouldn't slow teams down—it should accelerate what's possible. This led us to develop the first technology platform for responsible data use in 2016. Today, with AI representing the latest and most impactful expansion of data yet, One Trust is once again redefining what responsible innovation looks like.

One Trust, the AI‑Ready Governance Platform™, unifies regulatory intelligence, automation, and connected governance workflows so businesses can continue to move at the speed of AI while ensuring good governance to prevent data misuse sted by thousands of organizations worldwide, One Trust is shaping the future where trusted data becomes a transformative force for business and society.

We are seeking a Senior Security Engineer to design, build, and maintain critical security infrastructure and controls across the One Trust environment. Your work will directly support the delivery of secure enterprise services and customer‑facing solutions. This role is hands‑on, broad in scope, and spans multiple areas of information security.

As a Senior Security Engineer, you will:

• Design, build, scale, and maintain core security infrastructure and controls.
• Respond to security tickets requiring engineering-level configuration changes or enhancements.
• Assist with the investigation and remediation of security incidents.
• Serve as a Security SME for secure cloud infrastructure.
• Provide guidance and feedback on cloud and hybrid security solutions.
• Partner with internal teams to provide security requirements for key initiatives.
• Conduct POCs and collaborate with vendors to evaluate and recommend solutions.
• Implement new security technologies as part of project-based initiatives.
• Communicate project and issue status to management and business stakeholders.
• Create and maintain documentation for security projects and processes.
• Automate repetitive tasks and procedures.
• Update security documentation as threats and techniques evolve.
• Mentor security analysts and junior engineers.

• Experienced in handling security tickets, configuration changes, incident support, and cloud security engineering.
• Able to clearly communicate complex information, both verbally and in writing.
• Collaborative and comfortable working across teams and with vendors.
• Equally capable of working independently or as part of a team.
• Highly organized and able to manage multiple priorities.
• Detail-oriented while keeping broader strategic objectives in mind.
• Self‑directed, proactive, and comfortable working with minimal supervision.
• Deeply knowledgeable across core domains of information security and best practices.

• BA/BS in Computer Science, Engineering, Mathematics, or a related field.
• 4+ years of security engineering or related security experience.
• 3+ years of cloud experience.
• Solid understanding of information security principles around confidentiality, integrity, and availability.
• Experience with logging platforms such as Splunk or similar tools.
• Experience with endpoint security platforms (e.g., Crowd Strike, Sentinel One, traditional AV).
• Scripting proficiency in one or more:
  Unix/Shell, Python, Golang, Rust, Power Shell.
• Experience with IaC tools such as Terraform or Cloud Formation.
• Strong organizational, analytical, and problem‑solving skills.
• Ability to make sound decisions in a complex, fast‑changing environment.

Extra Impressive

• Experience with Azure, AWS, or GCP.
• Experience creating CI/CD pipelines for automated security control deployment (e.g., Jenkins, Git Lab).
• Experience with Azure Active Directory.
• Experience writing Splunk SPL or Microsoft KQL queries.
• Background with IDS/IPS, CASB, and DLP technologies.
• Familiarity with SASE solutions (e.g., Zscaler, Netskope, Palo Alto Prisma Access, Cloudflare One).
• Experience with cloud firewalls such as Palo Alto CNGFW or Fortinet.
• Understanding of Zero Trust networking models.
• Cloud or security certifications (e.g., Azure, AWS, GCP, CISSP, GIAC, CCSP).

We are embracing an…