Principal Engineer, Security AI Tooling and Automation

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Team Overview
Security Forward Deployed Engineering (SFDE) deploys concentrated engineering effort directly into the highest-priority problem spaces across Cyber Defense. The team works embedded across security and engineering, bringing product context into delivery and closing the gap between security intent and engineering reality. SFDE works across Vulnerability Management, AI Governance, Risk and Compliance, and Risk Intelligence to solve complex problems that require new technical approaches. The Sr. Principal Engineer, Security AI Tooling and Automation reports to the SVP, Cyber Defense and serves as a founding senior engineer in the AI Vulnerability Research and Engineering pod. This is a hybrid position and involves regular performance of job responsibilities virtually as well as in-person at an assigned TU office location for a minimum of two days a week.

Role Overview and Core Responsibilities

• Build and maintain the agentic automation framework, engineering the orchestration layer for tool invocation, state management, retry logic, observability, and failure handling across end-to-end security workflows.
• Own internal security tooling development, including vulnerability intelligence interfaces, remediation-tracking integrations, and operator-facing dashboards used by SFDE and partner security engineering teams.
• Integrate disparate security data sources by building and operating application programming interface (API) integrations, data connectors, and normalization pipelines that create a coherent, queryable data model.
• Automate remediation initiation and tracking by triggering fix workflows, monitoring remediation state, escalating breached service-level agreements (SLAs), and closing the loop from finding to validated resolution with minimal manual handoff.
• Embed security automation into continuous integration and continuous delivery (CI/CD) pipelines in partnership with Platform Engineering and DevOps, including automated fix-proposal workflows and pre-production security gates.
• Ensure production reliability of the tooling stack by owning observability, alerting, failure handling, and operational health with the engineering rigor expected of a production service.
• Operate as a practitioner-leader by setting technical direction for the automation layer, mentoring engineers, contributing to cross-pod architecture decisions, and representing tooling and platform capability with senior security and engineering stakeholders.
• Work embedded with engineering teams, sharing context early, co-owning outcomes, and building trust through delivery, technical depth, and shared accountability.

Required Knowledge and Experiences

• At least 8 years of hands-on experience in security engineering, platform engineering, or software engineering, including a strong security engineering component.
• Strong background in API integration, data-pipeline engineering, and building internal developer or operator tooling at production scale.
• Working knowledge of security engineering fundamentals, including vulnerability classes, exploit mechanics, and remediation patterns, sufficient to design automation that handles findings correctly.
• Strong systems thinking with the ability to design reliable, observable, and maintainable automation systems, set technical direction, make build-versus-integrate trade-offs, and deliver in a fast-moving embedded team environment.
• Bachelor's degree in Computer Science, Engineering, or equivalent practical experience.

Required Technical Skills

• Production experience building agentic artificial intelligence (AI) systems or large language model (LLM)-powered automation frameworks in Python or Go, including tool use, orchestration, and multi-step agentic workflow design.
• Experience engineering CI/CD pipelines and implementing automated security enforcement gates in software delivery workflows.
• Experience designing and operating production integrations, data connectors, normalization pipelines, observability, alerting, state management, retry logic, and failure handling for automation platforms.
• Ability to build and maintain internal security tooling, dashboards, remediation-tracking integrations, and automation systems used by security practitioners and engineering teams.

We're also looking for the preferred skills below. Whether you are proficient or could use some brushing up, we're happy to support your career development and growth in:

• Experience building security tooling or vulnerability-intelligence platforms, including internal tools, dashboards, or automation systems used by security practitioners.
• Familiarity with agentic AI frameworks and the engineering challenges of operating LLM-powered workflows reliably in production.
• Experience with container and image hardening, infrastructure as code (IaC), or runtime security instrumentation.
• Background in open-source security tooling, security-research automation, or exploit-validation tooling.
• Experience in financial services

Benefits that support every part of your life:

At TransUnion, we design benefits to help you feel well, do well, and plan well-from day one.

For Your Health : Enjoy day-one eligibility for medical, dental, and vision coverage, plus supplemental plan options. Spousal, domestic partner, and other eligible dependent coverage is available on select plans. Choose tax-advantaged HSA and FSA accounts to make everyday care more affordable.

For Your Protection : We've got your back with company-paid basic life and AD&D, optional voluntary life and AD&D for you and your family, and short- and long-term disability. You can also opt into a legal plan, pet insurance, and travel accident coverage.

For Your Family : From adoption assistance and fertility planning coverage to caregiver support, we're here for every chapter. Access Dependent Care FSA for possibility of an employer match, a complimentary View email address on click.appcast.io membership, and up to 12 weeks of paid parental leave with eligibility for a thoughtful, gradual return.

For Your Future : Build toward what's next with our 401(k) with employer match and Employee Stock Purchase Plan (ESPP). Tap financial wellness resources, career coaching, and optional long-term care insurance to plan confidently.

For You : Grow and recharge with tuition reimbursement, flexible time off for exempt employees or paid time off for nonexempt employees, up to 12 paid holidays per year, commuter benefits, employee discounts, charitable gift matching, and paid volunteer time off, plus corporate volunteer events that make it easy to give back.

For Your Wellness : Access 24/7 support including professional therapy, coaching, and emotional well-being programs alongside guided meditation and resources that support physical, mental, social, and financial wellness.

We are committed to being a place where diversity is not only present, it is embraced. As an equal opportunity employer, all qualified applicants will receive consideration for employment without regard to race, color, religion, sex, national origin, age, disability status, veteran status, genetic information, marital status, citizenship status, sexual orientation, gender identity or any other characteristic protected by law. Additionally, in accordance with Section 503 of the Rehabilitation Act of 1973 and the Vietnam Era Veterans' Readjustment Assistance Act of 1974, TransUnion takes affirmative action to employ and advance in employment qualified individuals with a disability and protected veterans in all levels of employment and develops annual affirmative action plans. Components of TransUnion's Affirmative Action Program for individuals with disabilities and protected veterans are available for review to any associate or applicant for employment upon request by contacting .

Qualified applicants with arrest or conviction records will be considered for employment in accordance with applicable law, including the Los Angeles County Fair Chance Ordinance for Employers, the San Francisco Fair Chance Ordinance, Fair Chance Initiative for Hiring Ordinance, and the California Fair Chance Act.

Adherence to Company policies, sound judgment and trustworthiness, working safely, communicating respectfully, and safeguarding business operations, confidential and proprietary information, and the Company's reputation are also essential expectations of this position.

Pay Scale Information:

The U.S. base salary range for this position is $168,750.00 - $281,250 annually. *The salary range for this position reflects a reasonable estimate of the range of compensation for this job. At TransUnion, actual compensation is based on careful consideration of additional factors such as (but not limited to) an individual's education, training, work experience, job-related skill set, location, and industry knowledge, as well as the scope and responsibilities of the position and market considerations. Regular, fulltime non-sales positions may be eligible to participate in TransUnion's annual bonus plan. Certain positions may be also eligible for long-term incentives and other payments based on applicable company guidance and plan documents.

TransUnion Overview:

At TransUnion, we encourage and are committed to creating a real, positive impact and shared sense of purpose within our Workforce for Good , which empowers our people to grow, innovate and contribute to a better future for our communities and customers. We strive to build an environment where our associates are in the driver's seat of their professional development- while having access to help along the way. We recognize that success comes when our associates thrive both professionally and personally; that's why we prioritize work/life flexibility and offer resources for our teams across the globe to collaborate and drive excellence.

Be a part of our Workforce for Good - you'll work with great people, pioneering products and cutting-edge technology.

TransUnion's Internal Job Title:
Principal, Cybersecurity

Company:
TransUnion LLC