Senior IT Security Engineer

This position offers a hybrid work schedule, with three days working in the office and two days working remotely.

We're seeking an experienced, hands-on Senior IT Security Engineer to help protect enterprise systems, data, and infrastructure. This hands-on role is ideal for a seasoned security professional who can design and implement controls, respond to threats, and partner across IT and the business to strengthen our security posture. 

In this position, you will:

• Lead root cause analysis and security investigations across endpoints, servers, network infrastructure, identity platforms, and cloud environments


• Design, implement, and continuously improve security controls to protect data, reduce risk, and align with cybersecurity best practices and frameworks


• Own and enhance monitoring, detection, and incident response processes—triaging alerts, coordinating containment/eradication, and driving lessons learned


• Engineer and operationalize security tooling


• Drive vulnerability management activities including identification, prioritization, remediation coordination, and verification


• Lead or significantly contribute to vendor risk management activities, security assessments, and third-party control validation

We are seeking candidates who have:

• Bachelor’s degree or Masters in Computer Science, Information Technology, Cybersecurity, or a related field


• 7+ years of progressive experience in IT security engineering, security operations, or a closely related role


• Strong knowledge of security principles, common frameworks and practical risk reduction techniques


• Hands-on experience with modern security tools and technologies, vulnerability management and network security controls


• Support compliance initiatives and security standards


• Security certifications such as CISSP, Security+, Azure/AWS security certifications are a plus

Your Future Starts Here: Benefits That Support Your Lifestyle

• Compensation includes a salary commensurate with experience


• Generous paid time off and paid company holiday schedule

Discover our full range of relocation jobs with comprehensive support packages to help you relocate and settle in your new location.



• Comprehensive benefits from day one


• Medical, Dental, Vision, Life, Long-Term Disability, Company Match 401(k), HSA, FSA


• Paternal Leave, Adoption Assistance, Fertility and Family Planning Assistance, Pet Insurance, Retail Discount Programs


• Community volunteer opportunities


• Support of healthy lifestyles through a wellness program including gym subsidies


• Scholarships for dependents of Great West employees


• Tuition reimbursement for current employees


• Company paid continuing education and monetary awards for professional development


• Opportunities for a hybrid work schedule (three days in the office, two days remote)

Who we are:

For over 65 years, Great West Casualty Company has provided premier insurance products and services to thousands of truck drivers and trucking companies across America. We have offices located around the country, and nearly 1,200 professionals are proud to call us an employer of choice. We are dedicated to the success, happiness, and wellness of our employees. If you are looking for a company where your contributions are valued, your continued learning is financially supported, and customer service is a priority, we want to talk to you. Apply today and join one of America's largest insurers of trucking companies as we help keep the nation's economy moving forward one mile at a time.

Location: South Sioux City, Nebraska 

This position qualifies for relocation assistance. To learn more about Great West and our office locations, please visit our website www.gwccnet.com.

Great People.

Great Careers.

Great West Casualty Company.

Great West Casualty Company is an Equal Opportunity Employer.