Sr. Security Engineer

Valiant Technologies LLC; Atlanta (GA); On-site; USD 81,000 - 115,000; Full time

Job summary

Valiant Technologies LLC in Atlanta seeks a Sr. Security Engineer to design, deploy, and manage an enterprise PKI infrastructure. You will ensure high availability, oversee certificate lifecycles, and drive automation across large-scale environments.

You will collaborate with application, infrastructure, and security teams, implement modern PKI practices, and align with NIST, CMMC, PCI, and TSA requirements. This role is focused on PKI resilience and secure cryptographic operations.

Qualifications

• Experience designing, implementing, operating enterprise PKI infrastructure.
• Strong understanding of certificate lifecycle management and trust stores.
• Familiarity with integrating PKI with CI/CD pipelines and cloud platforms.

Responsibilities

• Design, implement, operate, and maintain enterprise PKI infrastructure.
• Ensure availability, resiliency, patching, and stability of PKI services.
• Manage certificate lifecycle activities including issuance, renewal, revocation, and replacement.
• Administer large-scale certificate environments across enterprise apps and infrastructure.
• Develop and implement automation for certificate lifecycle management.
• Integrate PKI services with CI/CD pipelines, cloud platforms, and enterprise apps.
• Define and enforce certificate usage and cryptographic policies.
• Support compliance with NIST, CMMC, PCI, and TSA directives.
• Collaborate with application, infrastructure, and security teams to enable certificate automation.

Skills

PKI expert

Certificate lifecycle mgmt

Automation

CI/CD integration

Security collaboration

Tools

PKI tools

Job description

US Citizen, Green Card, H-1B, OPT-EAD, CPT, Other

Job Title:Sr. Security Engineer
Location: Atlanta,GA
Duration: 10 Months + Extension
Bill Rate: $71/hour
Job Type: W-2, 1099, C2C
Client: To Be Discussed Later
Work Authorization: US-Citizen, H-1B, OPT-EAD, GC-EAD

Job Description

• Design, implement, operate, and maintain enterprise PKI infrastructure.
• Ensure availability, resiliency, patching, and stability of PKI services.
• Manage certificate lifecycle activities, including issuance, renewal, revocation, and replacement.
• Administer large-scale certificate environments across enterprise applications and infrastructure.
• Manage trust stores, certificate chains, and certificate integrity.
• Develop and implement automation for certificate lifecycle management.
• Integrate PKI services with CI/CD pipelines, cloud platforms, and enterprise applications.
• Deploy and operationalize PKI connectors, tools, and automation pipelines.
• Define and enforce certificate usage, cryptographic security, and certificate issuance policies.
• Support compliance requirements related to NIST, CMMC, PCI, and TSA directives.
• Collaborate with application, infrastructure, and security teams to enable certificate automation.
• Assist application teams with PKI onboarding, integration, and operational guidance.
• Identify and remediate certificate expiration, misconfiguration, and trust-related risks.
• Support incident response involving certificate failures and encryption issues.
• Improve certificate health monitoring, reporting, and compliance visibility.
• Support adoption of emerging cryptographic standards, including Post-Quantum Cryptography (PQC).
• Evaluate and implement modern PKI solutions to improve scalability, security, and resilience.

We are an equal opportunity employer. All aspects of employment including the decision to hire, promote, discipline, or discharge, will be based on merit, competence, performance, and business needs. We do not discriminate on the basis of race, color, religion, marital status, age, national origin, ancestry, physical or mental disability, medical condition, pregnancy, genetic information, gender, sexual orientation, gender identity or expression, national origin, citizenship/ immigration status, veteran status, or any other status protected under federal, state, or local law.