Compute Consultant – PKI & Certificate Administration
Optum · Région métropolitaine de Manille
Job description
About the role
We are looking for a Compute Consultant to own the lifecycle of PKI and TLS certificates across our enterprise compute platforms, including virtualized and hybrid environments. The role sits within the Compute/Infrastructure team and focuses on certificate issuance, renewal, rotation, and revocation to ensure continuous service availability.
Key responsibilities
- Manage end‑to‑end certificate lifecycle (issue, renew, rotate, revoke) for internal PKI and public TLS certificates.
- Install and maintain certificates on Windows and Linux servers, IIS, Apache, Nginx, and load balancers such as F5, Citrix, HAProxy.
- Support certificate requirements in VMware and Azure Stack HCI hybrid compute platforms.
- Monitor certificate expiration, maintain inventory, runbooks and documentation, and prevent service outages.
- Respond to certificate‑related incidents in production and automate renewals using PowerShell, shell scripts or basic Python.
- Collaborate with Network, Security and Application teams to meet platform needs.
Required profile
- 7+ years of experience in compute, infrastructure or systems administration.
- 5+ years hands‑on PKI and certificate management experience.
- Strong knowledge of X.509, TLS/HTTPS and certificate chains.
- Experience with Active Directory Certificate Services or similar enterprise PKI platforms.
- Background working in regulated or audited environments is a plus.
Required skills
- PKI, X.509, TLS/HTTPS, certificate chains
- Active Directory Certificate Services (AD CS)
- Windows Server and Linux administration
- VMware and Azure Stack HCI virtualization
- IIS, Apache, Nginx web servers
- F5, Citrix, HAProxy load balancers
- PowerShell, Bash/Shell, Python scripting
- Certificate management tools such as Venafi, Keyfactor, AppViewX, DigiCert, Sectigo
- Cloud certificate services (Azure Key Vault, AWS ACM) and Kubernetes certificate handling (optional)
What we offer
- Hybrid work model with company‑provided laptop/computer
- Comprehensive medical, dental, vision and life insurance plans
- Retirement plan and paid time‑off
- Tuition reimbursement, employee assistance program and training opportunities
- Performance‑based merit increases and employee recognition programs
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Optum
Région métropolitaine de Manille
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