Sr. PKI Engineer

Datumtg; Atlanta (GA); On-site; USD 120,000 - 170,000; Full time

Job summary

Datumtg in Atlanta, GA is seeking a PKI Engineer to design, operate, and optimize enterprise PKI and certificate management across applications and infrastructure.

You will implement automation, ensure certificate health, manage lifecycles, and collaborate with security and development teams to enforce encryption and cryptography standards.

Qualifications

• Bachelor's degree or equivalent experience in CS or security.
• 3–7+ years in PKI, cybersecurity engineering, or infrastructure security.
• Hands-on certificate lifecycle management experience.
• Experience with PKI tools and cloud certificate services.
• Understanding of TLS/SSL, cryptography, and key management.
• Experience with HSMs and trust store management.
• Familiarity with NIST, PCI-DSS, CMMC compliance.
• Experience scaling PKI in large enterprise environments.
• Experience with certificate issuance, renewal, and revocation processes.

Responsibilities

• Design, test, implement, and operate PKI and certificate management services.
• Ensure availability, resiliency, and patching of PKI infrastructure.
• Manage certificate issuance, renewal, revocation, and lifecycle.
• Automate certificate lifecycle management.
• Integrate PKI with CI/CD pipelines and cloud services.
• Define security policies for certificate usage and cryptography.
• Respond to security incidents and perform incident investigations.
• Collaborate with teams to enable certificate automation.
• Perform risk assessments and vulnerability testing.

Skills

PKI engineering

Certificate lifecycle management

TLS/SSL cryptography

HSMs and key custody

Cloud certificate services

Compliance frameworks (NIST, PCI-DSS,C

Trust store management

PKI tooling (Venafi, DigiCert, MS CA,

Education

Bachelor's degree in CS / Cybersecurity

Tools

Venafi

DigiCert

Microsoft CA

AWS ACM

Job description

Bachelor's degree in Computer Science, Cybersecurity, or related field (or equivalent experience)

3–7+ years in PKI, cybersecurity engineering, or infrastructure security

Hands-on experience with certificate lifecycle management

Experience with PKI tools/platforms (e.g., Venafi, DigiCert, Microsoft CA, AWS ACM)

Understanding of TLS/SSL, cryptographic principles, and key management

Experience with:

HSMs and key custody operations

Cloud certificate services (AWS, Azure)

Knowledge of compliance frameworks (NIST, PCI-DSS, CMMC)

Experience scaling PKI in large enterprise environments

Familiarity with trust store management across distributed systems

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Responsible for the design, testing, evaluation, implementation, support, management, and deployment of security systems/devices used to safeguard the organization's information assets. Also responsible for analyzing the information security environment and assisting with the development of security measures to safeguard information against accidental or unauthorized modification, destruction, or disclosure. '-Works with the technical team to recover data after a security breach. -Configures and installs firewalls and intrusion detection systems. -Develops automation scripts to handle and track incidents. -Investigates intrusion incidents, conducts forensic investigations and mounts incident responses. -Delivers technical reports and formal papers on test findings. -Installs firewalls, data encryption, and other security measures. -Maintains access by providing information, resources, and technical support. -Ensures authorized access by investigating improper access; revoking access; reporting violations; monitoring information requests by new programming; recommending improvements. -Updates job knowledge by participating in educational opportunities; reading professional publications; maintaining personal networks; participating in professional organizations. -Accomplishes information systems and organization mission by completing related results as needed. '-Builds, deploys, and tracks security measurements for computer systems and networks. -Mitigates security vulnerabilities by implementing applicable solutions and tools. -Performs vulnerability testing, risk analyses, and security assessments. -Collaborates with colleagues on authentication, authorization, and encryption solutions. -Tests security solutions using industry standard analysis criteria. -Responds to information security issues during each stage of a project's lifecycle. -Performs risk assessments and testing of data processing systems. -Establishes system controls by developing framework for controls and levels of access; recommending improvements

-Establishes computer and terminal physical security by developing standards, policies, and procedures; coordinates with facilities security; recommends improvements. -Safeguards computer files by performing regular backups; developing procedures for source code management and disaster preparedness; recommends improvements. '-Determines the sensitivity of the data in order to recommend the appropriate security needs. -Develops proposals for, and consider cost effective equipment options to satisfy security needs. -Communicates with the technical team, management team and users companywide if data security is breached. -Designs infrastructure to alert the technical team of detected vulnerabilities. -Evaluates new technologies and processes that enhance security capabilities. -Supervises changes in software, hardware, facilities, telecommunications and user needs. -Defines, implements, and maintains corporate security policies. -Analyzes and advises on new security technologies and program conformance. -Creates, tests, and implements network disaster recovery plans. -Recommends security enhancements and purchases. -Trains staff on network and information security procedures. -Develops security awareness by providing orientation, educational programs, and on-going communication. -Recommends modifications in legal, technical and regulatory areas that affect IT security.

Quals--

The PKI Engineer is responsible for designing, operating, and enhancing the enterprise Public Key Infrastructure (PKI) and certificate management services. This role ensures secure authentication, encryption, and certificate lifecycle management across enterprise systems, supporting regulatory compliance and operational stability.

Ensure availability, resiliency, and patching of PKI infrastructure

Support certificate issuance, renewal, revocation, and lifecycle management

Manage large-scale certificate environments across applications and infrastructure

Ensure timely renewal and replacement of certificates

Support trust store management and certificate chain integrity

Build and implement automation for certificate lifecycle management

Integrate PKI services with enterprise platforms (CI/CD pipelines, cloud services, applications)

Deploy and operationalize tools such as connectors and automation pipelines

Enforce security policies related to certificate usage and cryptography

Define and maintain standards for certificate issuance, validity, and usage

Support compliance with regulatory frameworks (e.g., NIST, CMMC, PCI, TSA directives)

Partner with application and infrastructure teams to enable certificate automation

Provide guidance and supporting tooling while ensuring clear ownership boundaries

Assist teams with onboarding to PKI services and automation

Identify and remediate risks related to certificate expiration, misconfiguration, or trust failures

Support incident response involving certificate or encryption issues

Improve visibility and reporting for certificate health and compliance

Support adoption of new cryptographic standards (e.g., post-quantum cryptography)

Assist in modernization of PKI architecture and tooling

Evaluate new solutions for scalability and resilience