Systems Security Engineer I (For 2026 Interns Only)

Sierra Nevada Corporation; Lone Tree (CO); Hybrid; USD 82,000 - 113,000; Full time

Benefits offered by this job

Medical, dental, and vision plans

401(k) with 150% match up to 6%

3 weeks paid time off

Tuition reimbursement

Job summary

Sierra Nevada Corporation in Lone Tree, CO is hiring a Systems Security Engineer I for a role focused on designing, implementing, and maintaining secure operating systems, networks, and applications. You will contribute to incident response, digital forensics, and vulnerability assessments in a hybrid or in-office setting.

The position requires a Bachelor's degree in a security-related field and 0–2 years of IT security experience (or 4+ years with no degree). A Secret U.S.

Qualifications

• Bachelor's degree in Systems Security, Network Engineering, Information Technology, or related field.
• 0–2 years of IT security experience; in absence of degree, at least 4 years of related experience.
• Familiarity with security frameworks and standards (NIST, ISO 27001).
• Ability to obtain and maintain a Secret U.S. Security Clearance.

Responsibilities

• Assist in the design and implementation of secure IT systems and networks.
• Perform security monitoring and tuning to identify and mitigate threats.
• Participate in incident response, digital forensics, and loss prevention activities.
• Conduct risk and vulnerability assessments to identify security weaknesses.
• Develop and implement security controls and protocols.
• Research and recommend new security tools and technologies.

Skills

Cybersecurity principles

NIST familiarity

ISO 27001 familiarity

Security incident response

Education

Bachelor's degree in Systems Security/Network Engineering/Information Technology or related

4+ years if no degree (equivalent experience)

Tools

Firewalls

Intrusion Detection Systems

Antivirus software

Job description

## Systems Security Engineer I (For 2026 Interns Only)Apply: Hybrid or in office: Lone Tree, CO: Full time: Posted Today: End Date: October 30, 2026 (28 days left to apply): R0030608Do you have a passion for IT and security? We have a great opportunity for you! As a Systems Security Engineer I, you will contribute to the design, implementation, and maintenance of our secure operating systems, networks, and applications. You will be responsible for ensuring the protection of our IT infrastructure through incident response, digital forensics, and vulnerability assessments.The ISR (Intelligence, Surveillance & Reconnaissance), Aviation, and Security (IAS) business area is a leader in ISR and aviation, it is a leading prime manned and unmanned aircraft systems integrator for innovative, high-performance ISR and aviation systems. Its end-to-end Command, Control, Computers, Communications and Intelligence, Surveillance & Reconnaissance (C4ISR) capabilities encompass design, integration, test, certification, ground/flight training and complete logistics support. IAS tailors solutions to customer cost, performance, and schedule requirements and designs to consistently exceed expectations – with an unrivaled record of on time and on (or under) budget deliveries.**Responsibilities:*** Assist in the design and implementation of secure IT systems and networks.* Perform security monitoring and tuning to identify and mitigate potential threats.* Participate in incident response, digital forensics, and loss prevention activities.* Conduct risk and vulnerability assessments to identify security weaknesses.* Develop and implement security controls and protocols.* Research and recommend new security tools and technologies.* Document security breaches and assess the damage they cause.* Assist with the development of security policies and procedures.**Qualifications You Must Have:*** Bachelor's degree in Systems Security, Network Engineering, Information Technology, or related Engineering discipline.* 0-2 years of experience in IT security or a related field.* Relevant experience can be considered as a substitute for the required educational qualifications. In the absence of a degree, a minimum of 4 years of related experience is required.* Basic knowledge of cybersecurity principles and practices.* Familiarity with security frameworks and standards such as National Institute of Standards and Technology (NIST), ISO 27001.* The ability to obtain and maintain a Secret U.S. Security Clearance is required**Qualifications We Prefer:*** Information System Security Officer (ISSO) Security+, Certified Information Systems Auditor (CISA), or CompTIA Advanced Security Practitioner (CASP+) Certification.* Microsoft Certified Solutions Expert (MCSE), Linux, and/or Cisco Certified Network Professional (CCNP) Security Certification.* Experience with security tools such as firewalls, intrusion detection systems, and antivirus software.* Experience in the aerospace or defense industry.**Essential Functions:*** Ability to work primarily at a computer for extended periods.* Capability to participate in on-call rotation for incident response.* Must be able to lift up to 25 lbs occasionally.* Ability to work in an office or hybrid environment.* Occasional travel may be required.This posting will be open for application for a minimum of 5 days and may be extended based on business needs.Estimated Starting Salary Range: $82,039.23 - $112,803.95. Compensation varies depending on a wide array of factors, such as candidates' key skills, relevant work experience, and education/training/certifications. The disclosed range estimate may be adjusted for any applicable geographic differential associated with the location at which the position may be filled.SNC offers a generous benefit package, including medical, dental, and vision plans, 401(k) with 150% match up to 6%, life insurance, 3 weeks paid time off, tuition reimbursement, and more.**IMPORTANT NOTICE:**This position requires the ability to obtain and maintain a Secret U.S. Security Clearance. U.S. Citizenship status is required as this position needs an active U.S. Security Clearance for employment. Non-U.S. citizens may not be eligible to obtain a security clearance. The Department of Defense Consolidated Adjudications Facility (DoD CAF), a federal government agency, handles the adjudicative aspects of the security clearance eligibility process for industry applicants. Adjudicative factors which affect the outcome of the eligibility determination include, but are not limited to, allegiance to the U.S., foreign influence, foreign preference, criminal conduct, security violations and illegal drug use.Learn more about the background check process for Security Clearances.SNC is a global leader in aerospace and national security committed to moving the American Dream forward. We’re known and respected for our mission and execution focus, agility, and disruptive and rapid innovation. We provide leading edge technologies and transformative solutions that support our nation’s most critical security needs. If you are mission-focused, thrive in collaborative environments, and want to make our country stronger with state-of-the-art technologies that safeguard freedom, join our team!SNC is an Equal Opportunity Employer committed to an environment free of discrimination. Employment decisions are made based on merit without regard to race, color, age, religion, sex, national origin, disability, status as a protected veteran or other characteristics protected by law.