Senior Certificate Engineer (PKI / Active Directory)
Gainwell TechnologiesAbout the role
Be part of a team that unleashes the power of leading-edge technologies to help improve the health and well-being of those most vulnerable in our country and communities. Working at Gainwell carries its rewards. You’ll have an incredible opportunity to grow your career in a company that values work flexibility, learning, and career development. You’ll add to your technical credentials and certifications while enjoying a generous, flexible vacation policy and educational assistance. We also have comprehensive leadership and technical development academies to help build your skills and capabilities.
Summary
We are seeking a highly skilled Senior Certificate Engineer to design, implement, and manage enterprise Public Key Infrastructure (PKI) solutions. This role will focus on Active Directory Certificate Services (AD CS), public certificate authority integrations, and end-to-end certificate lifecycle management across hybrid environments.
The ideal candidate has deep expertise in Microsoft PKI architecture, certificate automation, and identity/security integration, along with experience working with public CAs (e.g., DigiCert, Entrust, Sectigo) in a large-scale enterprise environment.
Your role in our mission
PKI Architecture & Engineering
- Design and maintain enterprise PKI solutions, including offline root CAs, issuing CAs, and certificate policies
- Lead PKI modernization efforts, including hybrid and cloud-integrated certificate services
- Architect solutions that support high availability, scalability, and security compliance
Active Directory Integration
- Implement and manage Active Directory Certificate Services (AD CS)
- Configure and maintain:
- Certificate templates
- Group Policy-based auto-enrollment
- CRL distribution points (CDPs) and AIA locations
- Integrate PKI with Active Directory, Azure AD, and hybrid identity environments
Public Certificate Authority Management
- Manage enterprise relationships and integrations with external/public CAs
- Oversee procurement, issuance, renewal, and revocation of public SSL/TLS certificates
- Integrate public CA services into automation workflows and enterprise platforms
Certificate Lifecycle Management
- Manage certificate lifecycle processes including:
- Issuance
- Renewal
- Revocation
- Expiration monitoring
- Implement automation using tools such as:
- PowerShell
- ACME / EST / SCEP protocols
- Certificate management platforms
Security & Compliance
- Ensure PKI solutions meet enterprise security policies and regulatory requirements (e.g., NIST, CIS, HIPAA, PCI)
- Conduct risk assessments related to certificate usage and cryptographic standards
- Maintain secure key management practices, including HSM integration where applicable
Operations & Troubleshooting
- Provide Tier 3 escalation support for PKI and certificate-related issues
- Troubleshoot:
- Authentication failures (TLS, smart card, etc.)
- Certificate chain issues
- Revocation and CRL distribution problems
- Develop monitoring, alerting, and reporting for certificate health and usage
Automation & Innovation
- Develop and maintain automation scripts and workflows for certificate deployment and management
- Integrate PKI processes with:
- ServiceNow
- Azure services
- DevOps pipelines
- Drive adoption of modern certificate management solutions and practices
What we're looking for
- Bachelor’s degree in Computer Science, Information Technology, or related field (or equivalent experience)
- 7+ years of experience in:
- Enterprise PKI engineering
- Active Directory administration
- Strong experience with:
- Active Directory Certificate Services (AD CS)
- Windows Server environments <
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