ATO Architect

Mythics, LLC

. Assist Federal and DoD Customers in navigating the complete Risk Management Framework (RMF) lifecycle while ensuring compliance with security policies and authorization requirements .

Posted 4/20/2026full-time🇺🇸 United StatesSeniorLeadWebsite

Tech Stack

Tools & technologies

Cyber Security

About the role

Key responsibilities & impact

Assist Federal and DoD Customers in navigating the complete Risk Management Framework (RMF) lifecycle while ensuring compliance with security policies and authorization requirements
Collaborate with stakeholders to coordinate Authorization to Operate (ATO) activities, identify and mitigate risks, and maintain the security posture of systems from acquisition and deployment to decommissioning
Act as a trusted security advisor, translating complex cybersecurity requirements into practical recommendations that facilitate the secure and compliant implementation of IT systems
Coordinate and support RMF Steps 0–6 activities required to obtain and maintain system Authorizations to Operate (ATO)
Collaborate with system stakeholders to ensure security requirements are implemented and documented
Develop, update, and maintain detailed security documentation and authorization artifacts in accordance with the individual agencies policies and processes
Identify, assess, and help mitigate security risks and vulnerabilities, escalating critical risks to leadership when necessary
Provide information system security guidance throughout the system lifecycle, including acquisition, installation, operations, and decommissioning
Support security reviews of IT systems, networks, hardware, and software across a variety of environments and installation sites

Requirements

What you’ll need

Must be a US with a minimum of a Tier 3 Secret clearance
Ability to obtain and maintain a Top Secret Clearance or Suitability/Fitness determination based on client requirements
Bachelor’s degree in Computer Science, Electronics Engineering or other Engineering or technical discipline and/or equivalent work experience
10 years of work experience
Experience in proactively and independently managing complex system records in the Enterprise Mission Assurance Support Service (eMASS) tool.
Experience with supporting all RMF steps, security categorizations, creating and updating security artifacts and FISMA security documents, control implementation details, and Plan of Action and Milestones (POA&M)
Experience with National Institute of Standards and Technology (NIST) SP 800-53 security controls, RMF, and system authorizations and security compliance standards and processes
Experience in creating plans and approaches for executing product installation securely in accordance with agency authorization policy requirements for system major changes and development lifecycle, while identifying potential risks and working with system stakeholders to create mitigation strategies to reduce or eliminate risks
Analyze authorization documents and associated artifacts against authorization requirements to identify gaps, establish a schedule to address outstanding authorization requirements, and coordinate directly with system stakeholders to address identified gaps in accordance with required deadlines
Excellent oral and written communication skills and the ability to independently lead client-facing meetings and present complex ATO topics to the client
Ability to organize, manage, and maintain large amounts of discrete data with various expiration dates across multiple systems simultaneously

Benefits

Comp & perks

Comprehensive Health, Dental, and Vision plans
Premier 401k retirement plan with corporate matching and a 529 college saving plan
Tax-advantaged Health Savings Account and Dependent Care Flexible Spending Account options
Legal Resources
Unlock Exclusive Benefits for Full-Time Employees: Generous work/life balance opportunities supported by a PTO bank, paid holidays, leave programs and additional flex time off
Employee referral program
Employee recognition, gift and reward program
Tuition reimbursement for continuing education
Remote or hybrid work options
Engaging company events such as team building activities, annual awards and kick-off parties
Employee Resource Groups such as our Values & Women’s Leadership Committees – Focusing on charitable and volunteering events to give back to our community, creating an inclusive environment for all, and fun employee activities
Health and wellness-focused activities
Relaxation Spaces
In-office gourmet coffee, tea, fresh fruit and healthy snacks
Corporate GREEN approach – tracking energy consumption for reduction and purchasing only environmentally friendly products for our offices

ATS Keywords

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Applicant Tracking System Keywords

Tip: use these terms in your resume and cover letter to boost ATS matches.

Hard Skills & Tools

Risk Management Framework (RMF)Enterprise Mission Assurance Support Service (eMASS)FISMA security documentsNIST SP 800-53security categorizationssecurity artifactsPlan of Action and Milestones (POA&M)security documentationsecurity controlssystem authorizations

Soft Skills

communication skillsleadershiporganizational skillsrisk mitigationcollaborationproblem-solvingindependent managementclient-facingpresentation skillsstakeholder engagement

Certifications

Tier 3 Secret clearanceTop Secret Clearance