About this opportunity
Largeton Group lists this ICA Security Engineer opportunity in denver, Colorado. Review the employer’s description below for duties, qualifications and application requirements.
Job description
Client: Bank of America
Overview
Senior PKI Engineer to design, implement and operate enterprise‑grade Public Key Infrastructure (PKI) services with a strong focus on Microsoft Active Directory Certificate Services (AD CS) and Active Directory (AD) integration. Hands‑on implementation and integration knowledge of certificate lifecycle management, CA hierarchy governance, enrollment automation, HSM‑backed key protection, CA backup restore, migration and integration with platforms such as Windows Server, Linux, network/security devices, cloud providers, MDM/EPP, and zero‑trust tooling. Subject matter expert for cryptographic standards, certificate‑based authentication and PKI security controls across the organization.
Key Responsibilities
Design and maintain enterprise PKI architectures (Root CA, Policy CA, Issuing CA) with offline/air‑gapped roots, secure key ceremonies, key usage and issuance workflows and robust CRL/OCSP distribution.
Integrate PKI with Active Directory (incl. AD forests/domains, AD CS, AIA/CDP locations, GPOs) and Azure AD/Entra ID where applicable (e.g., certificate‑based auth).
Engineer solutions for mutual TLS, 802.1X (wired/wireless/VPN), device identity, code signing, S/MIME, BitLocker and disk/volume encryption certificates.
Key sizes, algorithms (RSA, ECC and PQC) encryption and hashing.
Implement HSM‑backed key storage for CAs and code signing; lead key ceremonies, disaster recovery designs.
Own certificate lifecycle management (issuance, renewal, revocation) including automation via Intune, GPO/Autoenrollment, SCEP/NDES, ACME or MDM connectors.
Manage CRL/OCSP publication, monitoring and availability; design highly available, geo‑distributed revocation endpoints.
Implement scripting/automation (PowerShell, APIs) for bulk issuance, inventory, renewal and drift detection; enable separation of duties for secure operation of PKI infrastructure.
CA backup, restore, renewal and migration strategy.
Apply strong key management practices (FIPS 140‑2/140‑3), certificate assurance levels and secure CA hardening baselines.
Regularly perform PKI risk assessments, access reviews and control testing (e.g., template permissions, EKU misuse, issuance constraints); lead root cause analysis and incident response for certificate/PKI‑related outages or security events.
Maintain alignment with NIST, CAB Forum, Microsoft Security Baselines and internal compliance frameworks (e.g., SOX, PCI, HIPAA, ISO 27001) as applicable.
Minimum Qualifications
8+ years in Security Engineering/Identity Infrastructure, including 5+ years hands‑on with Microsoft AD CS and enterprise Active Directory managing CA infrastructure.
Proven experience designing, deploying and operating multi‑tier Microsoft PKI (offline root, issuing CAs) in large/complex environments.
Deep knowledge of X.509, CRL/OCSP, EKU/KU, SANs, key algorithms and sizes (RSA/ECC), hashing (SHA‑2) and certificate validation paths.
Strong PowerShell and Windows Server administration; GPOs, autoenrollment, templates, AIA/CDP configuration.
Experience with 802.1X/EAP‑TLS, TLS/mTLS, VPN auth and device/user certificate issuance at scale.
HSM experience (e.g., nCipher/Entrust/Thales) for CA key management.
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Worksite address
denver, CO, 80285, US
Who can apply
Review the original listing for work authorization, qualifications and employer requirements.