60 Mulligan Security Security Systems Engineer Jobs Hiring Near You

L3Harris is dedicated to recruiting and developing high‑performing talent who are passionate about what they do. Our employees are unified in a shared dedication to our customers’ mission and quest for professional growth. L3Harris provides an inclusive, engaging environment designed to empower employees and promote work‑life success. Fundamental to our culture is an unwavering focus on values, dedication to our communities, and commitment to excellence in everything we do.

L3Harris is the Trusted Disruptor in defense tech. With customers’ mission‑critical needs always in mind, our employees deliver end‑to‑end technology solutions connecting the space, air, land, sea and cyber domains in the interest of national security.

Job Title:

Specialist, Info Security Systems Engineering

Job Code:

40411

Job Location:

Colorado Springs, CO

Job Schedule:

9/80 (Every Other Friday Off)

Job Description:

The successful candidate will support a highly motivated engineering team in defining, designing, implementing, documenting, testing and sustaining security solutions on National Security Systems, or other systems engineered for our government customers, using current standards within National Institute of Standards & Technology (NIST) Risk Management Framework, Special Publications 800‑37, 800‑53, 800‑171, 800‑160 and other NIST publications; Committee on National Security Systems Instruction (CNNSI) 1253, Joint SAP Implementation Guide (JSIG), Federal Information Processing Standards (FIPS), and Cyber Survivability Attributes found in DOD’s Cyber Survivability Endorsement Implementation Guide to certify and achieve system accreditations.

The successful candidate will work with system developers or commercial product vendors in the design and evaluation of state‑of‑the‑art secure systems, networks, and database products, using methods such as encryption technology, vulnerability analysis and security management.

Essential Functions:

• Experience in Assessment & Authorization Vulnerability Management, ensuring systems meet security compliance standards and identifying potential vulnerabilities through regular assessments.
• Proficient in Cybersecurity Product Development, contributing to the design and implementation of security features within product offerings.
• Knowledgeable in Cybersecurity Assessments to evaluate the security posture of information systems and recommend enhancements.
• Knowledgeable in Data Protection & Privacy, implementing measures to safeguard sensitive information and ensure compliance with privacy regulations.
• Knowledgeable in Information & Cybersecurity Management, overseeing cybersecurity operations and aligning them with business objectives.
• Knowledgeable in Network Configuration & Security, configuring networks to enforce security policies and protect against unauthorized access.
• Understanding of Application Security principles, securing applications against a wide range of cyber threats.
• Proficient with the NIST Risk Management Framework (RMF), applying its guidelines to manage risks and ensure system resilience.
• Experience in IT Risk Escalation & Resolution, effectively communicating and addressing IT security risks with stakeholders.
• Ability to drive Security Architecture Improvements, evaluating and upgrading security architectures to address emerging threats and technologies.
• Stakeholder Engagement skills, collaborating with various stakeholders to ensure security considerations are integrated into business processes.
• Knowledgeable in Continuous Integration & Deployment practices within a DevSecOps framework, automating security checks and balances in the CI/CD pipeline.
• Capable of Cyber Threat Mitigation, employing strategies and tools to detect, prevent, and respond to cyber incidents.
• Adherence to Product Roadmap guidelines, ensuring security milestones align with product development timelines.
• Commitment to fostering a Security-Centric Culture, promoting security awareness and best practices throughout the organization.
• Knowledgeable in Agile Methodologies, applying agile principles to cybersecurity initiatives for improved flexibility and responsiveness.
• Support for Enterprise Architecture, contributing to the development and maintenance of an overarching IT architecture framework.
• Ability to interpret and apply IT Architectural Guidelines, ensuring cybersecurity solutions are consistent with organizational standards.
• Must have the ability to work onsite.
• This position is performed 100% onsite and cannot be performed remotely.
• Up to 15% travel is possible.

Qualifications:

• Bachelor’s Degree and minimum 4 years of prior relevant experience. Graduate Degree and a minimum of 2 years of prior related experience. In lieu of a degree, minimum of 8 years of prior related experience.
• Must have an active Secret security clearance.
• DoD 8140.03 IAT Level 2 certification.

Preferred Additional Skills:

• Perform Model Based System Engineering (UML, SysML, UAF).
• Configure/operate vulnerability analysis tools such as Tenable NESSUS Security products.

In compliance with pay transparency requirements, the salary range for this role in Colorado state is $80,500–$149,500. This is not a guarantee of compensation or salary, as final offer amount may vary based on factors including but not limited to experience and geographic location. L3Harris also offers a variety of benefits, including health and disability insurance, 401(k) match, flexible spending accounts, EAP, education assistance, parental leave, paid time off, and company‑paid holidays. The specific programs and options available to an employee may vary depending on date of hire, schedule type, and the applicability of collective bargaining agreements.

The application window for this position will close on 9/30/2026.

L3Harris Technologies is a proud Equal Opportunity Employer. L3Harris is committed to treating all employees and applicants for employment with respect and dignity and maintaining a workplace that is free from unlawful discrimination. All applicants will be considered for employment without regard to race, color, religion, age, national origin, ancestry, ethnicity, gender (including pregnancy, childbirth, breastfeeding or other related medical conditions), gender identity, gender expression, sexual orientation, marital status, veteran status, disability, genetic information, citizenship status, characteristic or membership in any other group protected by federal, state or local laws. L3Harris maintains a drug‑free workplace and performs pre‑employment substance abuse testing and background checks, where permitted by law.

Please be aware many of our positions require the ability to obtain a security clearance. Security clearances may only be granted to U.S. citizens. In addition, applicants who accept a conditional offer of employment may be subject to government security investigation(s) and must meet eligibility requirements for access to classified information.

By submitting your resume for this position, you understand and agree that L3Harris Technologies may share your resume, as well as any other related personal information or documentation you provide, with its subsidiaries and affiliated companies for the purpose of considering you for other available positions.

L3Harris Technologies is an E‑Verify Employer.