PKI & Cyber Defense Engineer (Onsite – Irving)

Fives DyAG Corp.; Irving (TX); On-site; USD 69,000 - 83,000; Part time

Benefits offered by this job

Health insurance

401(k) plan

Paid sick leave

Job summary

Fives DyAG Corp. seeks a Cyber Defense Engineer Mid / PKI Engineer for a 06+ months contract, onsite in Irving, TX. You will manage enterprise PKI platforms, issue and renew certificates, and enforce cryptographic standards to support secure authentication across systems.

Requires 3-5 years PKI/infrastructure security, AD CS or equivalent PKI, and PowerShell scripting. Relevant security certs and cloud certificate management experience are a plus.

Qualifications

• 3-5 years of PKI engineering or related security experience.
• Hands-on experience with AD CS or equivalent PKI platforms.
• Strong understanding of PKI, certificate lifecycle, SSL/TLS and X.509.
• Familiarity with HSMs and cryptographic key management.
• Bachelor’s degree in IT, CS, cybersecurity or related field; security certs are a plus.

Responsibilities

• Manage and maintain enterprise PKI platforms including CAs, RAs, HSMs, OCSP, and certificate enrollment.
• Issue, renew, revoke, and replace digital certificates for users, devices, servers, apps, and cloud services.
• Enforce PKI security controls, certificate policies, and cryptographic standards.
• Design and support automated certificate management using AD CS, Venafi, Keyfactor, DigiCert, ACME, and scripting.
• Manage cryptographic key generation, storage, rotation, escrow, and destruction.
• Diagnose and resolve certificate-related issues affecting apps, websites, VPNs, and authentication.
• Develop PKI architecture diagrams, procedures, docs, and governance standards.
• Participate in security assessments, incidents, vulnerability remediation, and modernization efforts.

Skills

PKI engineering

Information security

Certificate lifecycle management

Problem solving

Education

Bachelor's degree in IT, Computer Science, Cybersecurity, or related field

Tools

AD CS

Venafi

Keyfactor

DigiCert

ACME

PowerShell

HSMs

Job description

Fives DyAG Corp. seeks a Cyber Defense Engineer Mid / PKI Engineer for a 06+ months contract, onsite in Irving, TX. You will manage enterprise PKI platforms, issue and renew certificates, and enforce cryptographic standards to support secure authentication across systems.

Requires 3-5 years PKI/infrastructure security, AD CS or equivalent PKI, and PowerShell scripting. Relevant security certs and cloud certificate management experience are a plus.