Senior Security Engineering Analyst (Senior Cyber Security Analyst)

Mission Support and Test Services; North Las Vegas (NV); On-site; USD 97,000 - 146,000; Full time

Job summary

Mission Support and Test Services (MSTS) is seeking an experienced Senior Cyber Security Analyst - Security Engineering to safeguard our infrastructure from cyber threats. The role designs, implements, and enhances security measures protecting data, networks, systems, and applications across the organization.

You will work with ISSM and ISSOs, apply NIST standards, conduct assessments, and collaborate with cross-functional teams to deploy firewalls, SIEM, EDR, MFA, and encryption solutions.

Qualifications

• Bachelor’s degree or equivalent training in a computer-related field with 5+ years of related experience.
• Strong knowledge of network security principles, protocols, and technologies (TCP/IP, DNS, VPN, SSL/TLS).
• Hands-on experience with security tools and technologies (SAML, OAUTH, SIEM, IDS/IPS, DLP, WAF, EDR).
• Familiarity with cloud computing platforms (AWS, Azure, GCP) from a security perspective.
• Ability to collaborate with diverse teams and stakeholders.

Responsibilities

• Support ISSM and ISSOs with their assigned duties.
• Maintain relationships with Cybersecurity staff and customers.
• Apply NIST security standards to harden information infrastructure.
• Conduct policy compliance tasks and site surveys for non-compliance.
• Perform Security Test and Evaluations of information systems.
• Collaborate to design, deploy, and maintain security controls.
• Complete certification and accreditation of information systems.
• Assist with data calls, FISMA reporting, and audits.
• Perform other duties as assigned.

Skills

Network security principles

Security tools knowledge

Cloud security

Analytical & communication skills

Driver’s license

Education

Bachelor’s degree in computer field

5+ years related experience

Tools

SIEM

IDS/IPS

DLP

WAF

EDR

Job description

Job Description

MSTS is seeking an experienced candidate for Senior Cyber Security Analyst - Security Engineering. The Senior Cyber Security Analyst will play 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 sensitive data, networks, systems, and applications.

Responsiblities

Key Responsibilities

• Support the ISSM (Information System Security Manager) and ISSOs (Information System Security Officer) with the execution of their assigned duties.

• Contribute to an overall productive and respectful working relationships with Cybersecurity staff, other divisions, and other customers.

• Maintain a strong understanding of NIST security standards and the ability to apply NIST-defined measures to harden information infrastructure. Review cybersecurity threat information and assist with mitigating identified vulnerabilities.

• Conduct cybersecurity 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, assists with the completion and mitigation of security testing and evaluations 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 risk associated with purchases.

• Review current Cyber Security threat information and assist the Threat Evaluation Team with mitigating vulnerabilities identified.

• Assist with data calls, Federal Information Security Modernization Act (FISMA) reporting, compliance scanning and reporting, continuous monitoring and compiling reports for auditors.

• Perform other duties assigned by Management.

Qualifications

• 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).

• 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.

• The primary work location will be at the Losee Road facility in North Las Vegas, Nevada.

• Work schedule for this position will be 4/10’s, Monday – Thursday (subject to change).

• Pre-placement physical examination, which includes a drug screen, is required. MSTS maintains a substance abuse policy that includes random drug testing.

• Must possess a valid driver’s license.

MSTS is required by DOE directive to conduct a pre‑employment drug test and background review that includes checks of personal references, credit, law enforcement records, and employment/education verifications. Applicants offered employment with MSTS are also subject to a federal background investigation to meet the requirements for access to classified information or matter if the duties of the position require a DOE security clearance. Substance abuse or illegal drug use, falsification of information, criminal activity, serious misconduct or other indicators of untrustworthiness can cause a clearance to be denied or terminated by DOE, resulting in the inability to perform the duties assigned and subsequent termination of employment. In addition, Applicants for employment must be able to obtain and maintain a DOE Q-level security clearance, which requires U.S. citizenship, at least 18 years of age. Reference DOE Order 472.2 (https://www.directives.doe.gov/directives-documents/400-series/0472.2-BOrder-chg1-pgchg) , “Personnel Security”. If you hold more than one citizenship (i.e., of the U.S. and another country), your ability to obtain a security clearance may be impacted.

Department of Energy Q Clearance

(position will be cleared to this level). Reviews and tests for the absence of any illegal drug as defined in 10 CFR Part 707.4 (http://www.ecfr.gov/cgi-bin/text-idx?SID=14b1c770db022992d237769fbe9fc519&mc=true&node=se10.4.707_14&rgn=div8) , “Workplace Substance Abuse Programs at DOE Sites,” will be conducted. Applicant selected will be subject to a Federal background investigation, required to participate in subsequent reinvestigations, and must meet the eligibility requirements for access to classified matter. Successful completion of a counterintelligence evaluation, which may include a counterintelligence‑scope polygraph examination, may also be required. Reference 10 CFR Part 709 (http://www.ecfr.gov/cgi-bin/text-idx?tpl=/ecfrbrowse/Title10/10cfr709_main_02.tpl) , “Counterintelligence Evaluation Program.”

MSTS is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, national origin, disability, veteran status or other characteristics protected by law. MSTS is a background screening, drug‑free workplace.

Annual salary range for this position is: $97,219.20 - $145,828.80.

Starting salary is determined based on the position market value, the individual candidate education and experience and internal equity.

About Us

Mission Support and Test Services, LLC (MSTS) manages and operates the Nevada National Security Sites (NNSS) for the U.S. National Nuclear Security Administration (NNSA), a semi‑autonomous agency within the U.S. Department of Energy (DOE). The NNSS is an enterprise of special‑purpose, multi‑mission, high‑hazard experimentation facilities delivering technical and service solutions in partnership with the National Laboratories. Our collaborative work supports the government’s most important national security missions. (See NNSS.gov for our unique capabilities.) Our 3,000+ 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 Aerospace, Amentum, and HII Nuclear Inc.