Sr Security Engineer

About DAT

Discover your future at DAT Freight & Analytics, where innovation meets impact. For over four decades, DAT has been at the forefront of transportation and logistics, helping businesses move freight with greater efficiency and confidence. We are a technology company that removes uncertainty from freight for truckers, brokers, and shippers every day. Our advanced tools and data intelligence empower professionals to make smarter decisions, optimize costs, and operate more successfully. Through the industry's largest digital freight marketplace and insights derived from over $1 trillion in freight transactions, we provide the mission-critical information that keeps supply chains running smoothly across the country. DAT is proud to be an award-winning workplace that fosters innovation, celebrates success, and values professional growth. With strategic offices in Beaverton, Oregon, Denver, Colorado, Springfield, Missouri, and Bangalore, India, our teams collaborate to solve the transportation industry's most complex challenges. Ready to shape the future of freight technology? Learn more at dat.com/company.

Application Deadline: 11/30/2025

The Opportunity

DAT is looking for a Sr Security Engineer, to join our security team. This position can be based in our Seattle, WA office.

The Sr Security Engineer will join our Security Architecture and Engineering team. As a key member, you’ll lead the design, implementation, and adoption of org-wide security control and tooling to improve our security posture while enabling rapid and secure business growth. You will also work closely with cross functional teams to ensure that security is embedded into our SDLC, data protection strategies and information security systems. This is a hands-on, high impact role that combines architecture, engineering and enablement.

What You’ll Do

• Enable secure business growth and scalability by designing resilient, automated security architectures that support rapid product innovation balancing strong security controls with developer velocity and operational efficiency.
• Design and enhance security tooling, integrating with CI/CD pipelines, logging platforms and cloud security architecture.
• Develop reference architectures and technical standards for secure cloud deployments, container hardening, and access management that are disseminated and enforced across the enterprise.
• Collaborate with engineering and product teams to embed security into SDLC and production systems (DevSecOps, IaC scanning, SAST/DAST/SCA, etc.).
• Evaluate control effectiveness alongside Security and cross functional teams to enable continuous improvement.
• Provide advanced forensic and incident response expertise for priority security events and escalations, leveraging deep technical analysis to identify root cause, contain threats, and support post-incident remediation and control hardening.

The Skills and Experience You’ll Bring

• Team Player with strong communication, organizational, and relationship management skills. 
• Self-motivated, with keen attention to detail and excellent judgment skills.
• Excellent organizational and project management skills, with attention to detail and deadlines.
• Ability to write and present articulated documentation and processes.
• Ability to handle sensitive and confidential information.
• Deep technical expertise in cloud environments, including IAM, network security, posture alignment, and automation via Terraform, CloudFormation, or similar.
• Working knowledge of frameworks such as NIST 800-53, SOC 2, CIS Benchmarks, and Zero Trust Network Architecture.
• Strong understanding of DevSecOps pipelines, containerization (Docker, Kubernetes), and CI/CD security tooling.
• Experience with cloud-native logging, monitoring and detection frameworks.
• Proven experience (7+ years) in cybersecurity engineering or infrastructure/cloud security roles.
• S./M.S. degree in cybersecurity, computer science or related technical field are a plus.
• Professional certification preferred (e.g., GIAC, CISSP, Cloud Security Certifications or equivalent).

Why DAT?

DAT is an award winning employer of choice.

For starters, we have a hybrid work environment, but we also know what makes a great workplace. We have a time-tested and resolute set of operating values predicated on integrity, mutual respect, open communication, and executing with excellence. These values inform our strategic vision as much as any one of our products does. We’ve been an employer of choice in the Portland metropolitan area for f