Senior Information Security Engineer
OneTrust
Software Engineering, IT
Madrid, Spain
Posted on Feb 25, 2026
Strength in Trust
OneTrust’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, OneTrust is once again redefining what responsible innovation looks like. OneTrust, 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 at scale. Trusted by thousands of organizations worldwide, OneTrust is shaping the future where trusted data becomes a transformative force for business and society.
The Challenge
We are seeking a Senior Security Engineer to design, build, and maintain critical security infrastructure and controls across the OneTrust 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.
Your Mission
As a Senior Security Engineer, you will:
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Design, build, scale, and maintain core security infrastructure and controls.
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Respond to security tickets requiring engineering-level configuration changes or enhancements.
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Assist with the investigation and remediation of security incidents.
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Serve as a Security SME for secure cloud infrastructure.
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Provide guidance and feedback on cloud and hybrid security solutions.
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Partner with internal teams to provide security requirements for key initiatives.
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Conduct POCs and collaborate with vendors to evaluate and recommend solutions.
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Implement new security technologies as part of project-based initiatives.
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Communicate project and issue status to management and business stakeholders.
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Create and maintain documentation for security projects and processes.
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Automate repetitive tasks and procedures.
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Update security documentation as threats and techniques evolve.
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Mentor security analysts and junior engineers.
You Are
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Experienced in handling security tickets, configuration changes, incident support, and cloud security engineering.
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Able to clearly communicate complex information, both verbally and in writing.
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Collaborative and comfortable working across teams and with vendors.
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Equally capable of working independently or as part of a team.
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Highly organized and able to manage multiple priorities.
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Detail-oriented while keeping broader strategic objectives in mind.
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Self‑directed, proactive, and comfortable working with minimal supervision.
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Deeply knowledgeable across core domains of information security and best practices.
Your Experience Includes
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BA/BS in Computer Science, Engineering, Mathematics, or a related field.
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4+ years of security engineering or related security experience.
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3+ years of cloud experience.
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Solid understanding of information security principles around confidentiality, integrity, and availability.
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Experience with logging platforms such as Splunk or similar tools.
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Experience with endpoint security platforms (e.g., CrowdStrike, SentinelOne, traditional AV).
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Scripting proficiency in one or more: Unix/Shell, Python, Golang, Rust, PowerShell.
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Experience with IaC tools such as Terraform or CloudFormation.
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Strong organizational, analytical, and problem‑solving skills.
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Ability to make sound decisions in a complex, fast‑changing environment.
Extra Impressive
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Experience with Azure, AWS, or GCP.
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Experience creating CI/CD pipelines for automated security control deployment (e.g., Jenkins, GitLab).
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Experience with Azure Active Directory.
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Experience writing Splunk SPL or Microsoft KQL queries.
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Background with IDS/IPS, CASB, and DLP technologies.
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Familiarity with SASE solutions (e.g., Zscaler, Netskope, Palo Alto Prisma Access, Cloudflare One).
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Experience with cloud firewalls such as Palo Alto CNGFW or Fortinet.
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Understanding of Zero Trust networking models.
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Cloud or security certifications (e.g., Azure, AWS, GCP, CISSP, GIAC, CCSP).
Where we Work
We are embracing an office-first culture, encouraging three days a week in office for most roles, with meaningful opportunities to collaborate and celebrate in person.
Each role may have specific requirements or flexibility depending on the scope of the position, so we encourage you to verify this with your recruiter during your first interview.
Benefits
As an employee at OneTrust, you will be part of the OneTeam. That means you’ll receive support physically, mentally, and emotionally so that you can do your best work both in and out of the office. This includes comprehensive healthcare coverage, flexible PTO, equity RSUs, annual performance bonus opportunities, retirement account support, 14+ weeks of paid parental leave, career development opportunities, company-paid privacy certification exam fees, and much more. Specific benefits differ by country. For more information, talk to your recruiter or visit onetrust.com/careers.
Resources
Check out the following to learn more about OneTrust and its people:
Your Data
You have the right to have your personal data updated or removed. You also have the right to have a copy of the information OneTrust holds about you. Further details about these rights are available on the website in our Privacy Overview. You can change your mind at any time and have your personal data removed from our database. In order to do this you must contact us and let us know you wish to be removed. The request should be made on the Data Subject Request Form.
Recruitment fraud warning: OneTrust is aware of scams involving false offers of employment with our company. The fraudulent jobs, interviews and job offers use fake websites, email addresses, group chat and text messages. Be aware that we never ask candidates for personal information, IDs or bank information during the interview process. We do not interview prospective candidates via instant message or group chat, and do not require candidates to purchase products or services, or process payments on our behalf as a condition of any employment offer. Please note that any legitimate interview availability requests will come directly from a OneTrust recruiter with an "@onetrust.com" email address. You may also receive legitimate emails from "@us.greenhouse-mail.io". Recruiters will only reach out to candidates who have applied for a role through our ATS (Greenhouse) or prospects via LinkedIn InMail. Job offers will come from a recruiter and may have a "@docusign.net" email address. For more information or if you have been targeted please reach out to askrecruiting@onetrust.com.
Our Commitment to You
When you join OneTrust you are stepping onto a launching pad — the countdown has begun. The destination? A career without boundaries working alongside a diverse and inclusive crew who is passionate about doing meaningful work. As a pioneer, your voice and expertise will help chart the direction of an entirely new category. Our commitment to putting people first starts with you. Your growth is part of the mission. Our goal is to give you the power to embark on the next phase of your uniquely, unique career.
OneTrust provides equal employment opportunities to all employees and applicants for employment and prohibits discrimination and harassment of any type without regard to race, color, religion, age, sex, national origin, disability status, genetics, protected veteran status, sexual orientation, gender identity or expression, or any other characteristic protected by local laws.