Job Description

Chief Information Security Officer (CISO) - US Government & Public Sector

EY is seeking a Chief Information Security Officer (CISO) for the US Government & Public Sector (GPS). The CISO is the senior executive responsible for enterprise cybersecurity strategy, governance, and execution across both classified and unclassified environments. This includes compliance with DFARS/CMMC, NIST SP 80037, NIST SP 800171, NISPOM, and FedRAMP; secure software development; cloud security in Azure Government and Microsoft365 GCC High; and enterprise incident response. The CISO partners closely with the COO, CIO, Legal/Contracts, Risk Management, and the Facility Security Officer (FSO). USGPS encompasses EYs U.S. Federal, state, and local government client portfolio. This senior leadership role will have significant team leadership responsibilities with visibility to internal and client stakeholders.

Responsibilities

• Work with GPS engagement teams, supporting functions, and EYs Client Technology and Global Information Security organizations to develop and maintain a security and compliance program across all environments, platforms and applications used or desired by GPS.
• Strategy, Governance and Risk Management
  • Development and execution of a multiyear cybersecurity strategy and investment roadmap aligned to business objectives and federal contract requirements.
  • Development, management and maintenance of the GPS IT security risk management policy and/or procedural documentation mapped to NIST SP 80037 (RMF), NIST SP 80053, NIST SP 800171, NIST SP 800161 (CSCRM), and NIST SP 800218 (SSDF).
  • Ownership of the enterprise risk assessment (ERA), business impact analysis (BIA), and security metrics; present posture and material risk to the COO on a recurring cadence.
• Defense Industrial Base Compliance (Classified & Unclassified)
  • Manage GPS compliance with DFARS 252.2047012, 252.2047020, and 252.2047021, leading DFARS/CMMC readiness and ongoing compliance.
  • Serve as the Affixing Official (AO) and maintain an accurate SPRS selfassessment score with defensible Plans of Action and Milestones (POAMs) and achieve and maintain CMMC certification at level2.
  • Ensure systems operated for the government are designed properly and assessed against FedRAMP, Cloud Computing Security Requirements Guide, IRS1075, and MARSE.
  • Ensure safeguarding and incident reporting obligations for CUI (e.g., DFARS252.2047012 72hour reporting) are met; coordinate with DC3/DIBNet and affected customers.
  • Oversee NISPOM compliance for classified systems; partner with FSO to achieve and maintain Authorizations to Operate (ATOs).
  • Ensure proper handling of exportcontrolled data (ITAR/EAR).
  • Prepare for and lead Program through contractually required assessments and customer audits; keep evidence, policies, configurations, and logs auditready.
  • Respond to government inspections or audits in coordination with EY Information Security and Risk Management.
• Secure Cloud, Identity & Enterprise Platforms
  • Own security architecture and controls for Azure Government (Azure Gov) and Microsoft365 GCC High tenants, including Conditional Access, PIM/PAM, encryption, logging/retention, and data governance for CUI.
  • Implement Zero Trust principles across identity, endpoints, networks, and workloads; drive continuous verification and leastprivilege.
  • Deploy and operate EDR/XDR, SIEM/SOAR, DLP, CASB/SSE/SASE, MDM, key management/HSM, and vulnerability/configuration management at scale.
  • Oversee user authorization process and ongoing attestation of user authorization and access.
  • Assist to resolve GPS practitioners access or other issues with Enclave environments.
  • Ongoing development, coordination and sustainment of Information Security Continuous Monitoring (ISCM) Program across all applications within the environment.
• DevSecOps & Secure SDLC
  • Establish a software security program aligned to NIST SSDF (SP 800218) and EO14028 expectations; integrate security into SDLC across GitHub and Azure DevOps.
  • Govern AppSec tooling and policy: SAST (e.g., Checkmarx), DAST (e.g., Qualys/AppScan), SCA/OSS (e.g., Mend), IaC/container/K8s scanning, and Wiz/Wiz Code; enforce buildtime gates and remediation SLAs.
  • Require SBOM generation, artifact signing/provenance (e.g., SLSA targets), and secrets management across all repositories and pipelines.
• Detection, Response & Resilience
  • Develop, manage and maintain GPS incident response program.
  • Lead SOC and CSIRT functions: 247 monitoring, threat intelligence, purple/redteam exercises, and executive tabletop drills.
  • Maintain and test the Incident Response Plan and Cyber Crisis Playbook, including regulatory/customer communications and forensics preservation.
• Effective Business Integration
  • Ensure development of fitforpurpose solutions that support the business activities.
  • Manage integration of Firm applications into the GPS Enclave environment.
  • Understand and facilitate communication of EYs IT disaster recovery and business continuity plans to GPS clients, potential clients and engagement teams.
  • Augment existing Client Security Assurance reviews of data protection requirements contained in RFPs/RFQs to adequately respond, and assist in development of GPS client security and data protection (confidentiality) plans.
  • Monitor regulatory or other developments in INFOSEC principles, regulatory requirements and leading practices.
• Leadership, Team and Budget
  • Role model a leadership style that brings infrastructure, application and cybersecurity professionals together to collaborate constructively on the design, implementation and operation of controls.
  • Build and mentor a highperforming organization spanning Policy/GRC, AppSec/DevSecOps, Security Engineering/Architecture, SOC/IR, and ThirdParty & SupplyChain Risk.
  • Own the cybersecurity budget and vendor portfolio; rationalize tools and services for value, performance, and compliance.
  • Participate in purchasing and enhancement of thirdparty tools for GPS.
  • Augment and potentially streamline existing Vendor Supplier Risk Assurance Program during evaluation of subcontractor compliance with applicable cybersecurity and data protection clauses.
  • Drive a securityfirst culture: ongoing training, phishing simulations, secure coding education, and leadership engagement including data protection and awareness and rolebased training programs.
  • Coordinate and respond to annual (or more frequent) independent risk assessments and cyber security reviews.

Qualifications

• 12+ years of progressive cybersecurity leadership, including 5+ years at the enterprise or businessunit executive level.
• 5+ years FISMA related experience.
• Bachelors degree in IT or a nonIT field with a total of 10 years of information security experience.
• Masters degree preferred.
• Ability to obtain and maintain Top Secret clearance; US citizenship required.
• Thorough knowledge and understanding of FAR52.20421, DFARS252.2047012, NIST SP800171, NIST SP80053, NIST SP800161, GSAM552.23970, FISMA, and related clauses.
• Specialized knowledge and experience with the implementation of the NIST SP 800 family of publications, particularly those associated with the Risk Management Framework.
• Proven experience in the Defense Industrial Base with DFARS/CMMC and NIST SP800171 implementation and audits.
• Experience with FedRAMP compliance authorization and monitoring.
• Deep expertise securing Azure Government and Microsoft365 GCC High environments; experience with other Government cloud communities such as AWS.
• Experience working with classified environments, achieving/maintaining ATOs, overseeing classified systems under NISPOM and DoD RMF, and understanding SCIF operations.
• Knowledge of vulnerability scanning, network security (LAN/WAN), application security, database security, and security controls assessment against FISMA, FIPS, and NIST guidelines.
• Handson leadership of DevSecOps and software security programs covering GitHub/Azure DevOps/Jenkins with SAST/DAST/SCA, IaC/container security, SBOMs, and supplychain controls.
• Demonstrated analytical, problemsolving, organizational, interpersonal and communication skills; ability to collaborate effectively with diverse stakeholders, maintain professionalism and confidentiality, and adapt to changing priorities.
• Possession of CISSP, CISM, CCISO, CCSP, CRISC, CISA, PMP, or other relevant GIAC credentials preferred.

What We Offer You

• Comprehensive compensation and benefits package. Base salary ranges and benefits depend on location and experience.
• Hybrid model: most external clientserving roles work together in person 4060% of the time.
• Flexible vacation policy and paid time off options.
• Rich opportunities for career development, mentorship, and worldclass experiences.

Apply Today

EY accepts applications for this position on an ongoing basis.

Seniority level

Executive

Employment type

Fulltime

Job function

Information Technology

Industries

Professional Services

Equity Statement

EY provides equal employment opportunities to applicants and employees without regard to race, color, religion, age, sex, sexual orientation, gender identity/expression, pregnancy, genetic information, national origin, protected veteran status, disability status, or any other legally p]]> <

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