Senior Classified Security Engineering Analyst (Senior Cyber Security Analyst)

Mission Support and Test Services, LLC (MSTS) manages and operates the Nevada National Security Site (NNSS) for the U.S. National Nuclear Security Administration (NNSA).  Our MISSION is to help ensure the security of the United States and its allies by providing high-hazard experimentation and incident response capabilities through operations, engineering, education, field, and integration services and by acting as environmental stewards to the Site’s Cold War legacy.  Our VISION is to be the user site of choice for large-scale, high-hazard, national security experimentation, with premier facilities and capabilities below ground, on the ground, and in the air. (See NNSS.gov for our unique capabilities.) Our 2,750+ professional, craft, and support employees are called upon to innovate, collaborate, and deliver on some of the more difficult nuclear security challenges facing the world today.   

• MSTS offers our full-time employees highly competitive salaries and benefits packages including medical, dental, and vision; both a pension and a 401k; paid time off and 96 hours of paid holidays; relocation (if located more than 75 miles from work location); tuition assistance and reimbursement; and more.  
• MSTS is a limited liability company consisting of Honeywell International Inc. (Honeywell), Jacobs Engineering Group Inc. (Jacobs), and HII Nuclear Inc.

NNSS is seeking an experienced cyber security analyst for an exciting Senior Classified Security Engineering Analyst (Senior Cyber Security Analyst) role. The Senior Classified Security Analyst plays a critical role in safeguarding company infrastructure from cyber threats and attacks. The position is responsible for designing, implementing, managing, and enhancing security measures to protect classified and unclassified data, networks, systems, and applications. 

Key Responsibilities

• Assist the ISSM (Information Systems Security Manager) and ISSOs (Information System Security Officers) with the execution of their assigned duties. 
• Contribute to an overall productive and respectful work environment by providing excellent customer service and working in a positive, collegiate manner. 
• Maintain cooperative and respectful working relationships with Cyber Security staff, other divisions, and customers. 
• Conduct Cyber Security policy compliance tasks including: discovering unauthorized devices, conducting site surveys for non-compliance, and ensuring network access requirements are met. 
• Perform Security Test and Evaluations of information systems in support of a security plan. 
• Review Information System Plans for classified and unclassified systems. 
• Complete certification and accreditation of information systems on classified and unclassified systems and networks, assist with the completion and mitigation of security testing and evaluation results. 
• Collaborate with cross-functional teams to design, deploy, and maintain security controls including firewalls, intrusion detection/prevention systems, endpoint protection, encryption, and multi-factor authentication solutions. 
• Design networks and systems with a security focus, ensuring systems are developed in accordance with federal law, customer requirements, certification and accreditation requirements, and industry best practices. 
• Review purchase requests for technology items and provide input to senior level Cyber Security staff regarding the risks associated with the purchases. 
• Assist with data calls, FISMA reporting, compliance scanning and reporting, continuous monitoring and compiling reports for auditors. 

• Bachelor’s degree or equivalent training and experience in a computer-related field and at least 5 years of related experience.
• Strong knowledge of network security principles, protocols, and technologies (e.g., TCP/IP, DNS, VPN, SSL/TLS). 
• Have a strong understanding of NIST security standards (National Institute of Standards and Technology), the ability to apply NIST-defined measures to harden information structure and review Cyber Security threat information and assist with mitigating identified vulnerabilities. 
• Hands-on experience with security tools and technologies, such as SAML, OAUTH, SIEM, IDS/IPS, DLP, WAF, EDR, and vulnerability management systems. 
• Familiarity with cloud computing platforms (e.g., AWS, Azure, GCP) from a security perspective. 
• Excellent analytical, problem-solving, and communication skills with the ability to collaborate effectively with diverse teams and stakeholders. 
• Strong commitment to continuous learning, professional development, and staying current with evolving cyber threats and security technologies. 
• Preferred Certifications (please upload current certificates when applying): 
  • Certified System Security Professional (CISSP) <