Senior Cyber Security Engineer

Chenega MIOS SBU; Vienna (VA); On-site; USD 180,000 - 210,000; Full time

Job summary

Chenega MIOS in Vienna, VA seeks a Senior Cyber Security Engineer to support critical DoD and Intel missions, focusing on cybersecurity engineering, risk management, and compliance across cloud and on‑prem environments. The role emphasizes secure operations and system authorization.

Responsibilities include applying RMF to support A&A, preparing SSPs and ATO artifacts in XACTA/eMASS, conducting vulnerability scans with ACAS, and implementing NIST 800‑53 controls in collaboration with DevSecOps

Qualifications

• Bachelor’s degree with 5+ years of experience in cybersecurity engineering.
• Experience with RMF, A&A, POA&M, and ATO documentation (XACTA/eMASS).
• Experience securing Linux and Windows systems, patching and hardening.
• DoD 8570 IAT Level II or higher certification (e.g., Security+, CySA+, CISSP).

Responsibilities

• Applying RMF processes to support system A&A, including control selection, implementation, assessment, and continuous monitoring.
• Developing, reviewing, and maintaining SSPs, POA&Ms, SARs, and ATO artifacts in XACTA or eMASS.
• Conducting vulnerability assessments and compliance scans (ACAS) and tracking remediation.
• Implementing and validating security controls aligned with NIST 800-53, CNSSI 1253, and DoD guidance.
• Supporting system hardening, patching, and configuration management in accordance with STIGs.
• Monitoring systems for security events and supporting incident response and risk mitigation.
• Collaborating with system engineers, admins, and DevSecOps to integrate security across the lifecycle.
• Providing cybersecurity risk input to program leadership and stakeholders.

Skills

RMF

A&A

POA&M

ATO docs

NIST 800-53

Education

Bachelor's degree

Tools

XACTA

eMASS

ACAS

STIGs

Jira

Confluence

Job description

Overview

Senior Cyber Security Engineer

Vienna, VA

Are you ready to enhance your skills and build your career in a rapidly evolving business climate? Are you looking for a career where professional development is embedded in your employer’s core culture? If so, Chenega Military, Intelligence & Operations Support (MIOS) could be the place for you! Join our team of professionals who support large-scale government operations by leveraging cutting-edge technology and take your career to the next level!

Chenega Agile Real-Time Solutions (CARS) was created with the purpose of providing integrated enterprise IT support to Federal customers both CONUS and OCONUS. CARS employs Subject Matter Experts (SMEs) with decades of experience working in the Federal marketplace.

A Senior Cyber Security Engineer supports critical DoD and Intel missions and programs. This role focuses on cybersecurity engineering, risk management, and compliance across the cloud

and on-prem systems, supporting system authorization, vulnerability management, and

secure operations in classified environments.

Responsibilities

• Applying RMF processes to support system Assessment & Authorization (A&A), including control selection, implementation, assessment, and continuous monitoring
• Developing, reviewing, and maintaining security documentation such as SSPs, POA&Ms, SARs, and ATO artifacts in tools such as XACTA or eMASS
• Conducting vulnerability assessments and compliance scans (e.g., ACAS) and tracking remediation of findings and IAVM requirements
• Implementing and validating security controls aligned with NIST 800-53, CNSSI 1253, and related DoD guidance
• Supporting system hardening, patching, and configuration management in compliance with STIGs for Linux, Windows, and network devices
• Monitoring systems for security events and supporting incident response and risk mitigation activities
• Assessing security impacts of system changes and supporting configuration control boards (CCBs)
• Collaborating with system engineers, administrators, and DevSecOps teams to integrate security throughout the system lifecycle
• Providing cybersecurity risk input to program leadership, Authorizing Officials (AOs), and stakeholders
• Other duties as assigned

Qualifications

• Bachelor’s degree with 5+ years of experience (or equivalent experience)
  • Experience with RMF, A&A, POA&M, and ATO documentation (XACTA/eMASS)
  • Experience securing Linux and Windows systems, STIGs, patching, and system hardening
• DoD 8570 IAT Level II or higher certification (e.g., Security+, CySA+, CISSP)
• Active or Current (within two years of active) Top Secret Security Clearance with SCI eligibility

Preferred Qualifications

• Scripting or development experience (Python, Java, React)
• DevSecOps tools and pipeline experience
• Experience with Linux (Red Hat/CentOS), databases, web apps, or big data platforms
• Familiarity with Agile environments and tools (Jira, Confluence)
• Experience with NIST SP 800-171 and System Security Engineering (SSE)

Knowledge, Skills, and Abilities

• Hands-on vulnerability scanning and compliance tracking (ACAS, IAVM)
• Knowledge of NIST 800-series publications and incident response processes
• Strong analytical, communication, and collaboration skills
• Ability to work independently and yet be effective within a team setting
• Must be capable of managing multiple efforts with time-related constraints in a fast-paced contracting environment
• Demonstrated ability to effectively communicate and collaborate with diverse internal and external stakeholder groups and individuals
• Friendly presence, helpful attitude, good interpersonal skills, and ability to work well with others.
• Excellent skills in Microsoft Word, Excel, and other Office applications
• Proficient with Microsoft Office Applications, and experience working in a home office setting, as well as the ability to train end users on frequently asked technical issues.
• Ability to provide technical assistance and support over the phone; good phone skills, professional demeanor, and previous customer service experience strongly desired.
• Good problem-solving skills; ability to visualize a problem/situation and think abstractly to solve it

How you’ll grow

At Chenega MIOS, our professional development plan focuses on helping our team members at every level of their careers to identify and use their strengths to do their best work every day. From entry-level employees to senior leaders, we believe there’s always room to learn.

We offer opportunities to help sharpen skills in addition to hands-on experience in the global, fast-changing business world. From on-the-job learning experiences to formal development programs, our professionals have a variety of opportunities to continue to grow throughout their careers.

Benefits

At Chenega MIOS, we know that great people make a great organization. We value our team members and offer them a broad range of benefits.

Learn more about what working at Chenega MIOS can mean for you.

Chenega MIOS’s culture

Our positive and supportive culture encourages our team members to do their best work every day. We celebrate individuals by recognizing their uniqueness and offering them the flexibility to make daily choices that can help them be healthy, centered, confident, and aware. We offer well-being programs and continuously look for new ways to maintain a culture where we excel and lead healthy, happy lives.

Corporate citizenship

Chenega MIOS is led by a purpose to make an impact that matters. This purpose defines who we are and extends to relationships with our clients, our team members, and our communities. We believe that business has the power to inspire and transform. We focus on education, giving, skill-based volunteerism, and leadership to help drive positive social impact in our communities.

Learn more about Chenega’s impact on the world.

Estimated Salary/Wage

USD $180,000.00/Yr. Up to USD $210,000.00/Yr.