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Caplock Security LLC VERIFIED EMPLOYER

Application Engineer.

Cybersecurity & Info Security Full-Time

Application Engineer: our view in 3 lines...

  • The Role:This is a technical application support role for someone managing core applications, releases, compliance work, and infrastructure support in a security-focused environment.
  • The Person:The person will install and maintain software, manage upgrades and patching, support releases and incidents, handle APIs and data center migrations, and produce STIG and SRG compliance outputs.
  • Requirements:The role requires seven years of relevant experience, a BS, BA, or four additional years of related experience, an active Secret clearance or the ability to obtain one, and DoD 8140 8570 certification.

About the role

Benefits:
  • 401(k) matching
  • Dental insurance
  • Health insurance
  • Paid time off
  • Training & development
  • Vision insurance
Job Overview

Caplock Security is seeking an experienced Application Engineer to serve as the primary technical support lead for one or more core applications. In this role, you will work closely with server administrators and database administrators while maintaining a distinct separation of duties. You will be responsible for the full lifecycle management of application software, deployment releases, security compliance, and ongoing infrastructure support across pre-production and production environments. This position is a contingent hire, with employment dependent upon the successful award of the contract.
Responsibilities

  • Install, configure, and maintain all software products utilized by supported applications.
  • Execute software version installations, upgrades, and patch management.
  • Identify application-specific firewall and network requirements.
  • Provide hands-on technical support for data center migrations.
  • Handle setup and administration of interfaces and APIs.
  • Provide primary technical support for break/fix incidents to ensure high uptime.
  • Direct support for the application's code release process across both pre-production and production environments.
  • Support application requirements driven by organizational transformation initiatives.
  • Lead the implementation of application-based Security Technical Implementation Guides (STIGs) and Security Requirements Guides (SRGs).
  • Generate and provide required STIG/SRG output artifacts in support of program compliance.
  • Research, troubleshoot, and remediate cybersecurity vulnerabilities discovered through routine scanning.
Minimum Requirements:

  • Seven (7) years of relevant experience
  • BS, BA, or four (4) additional years of related experience
  • Clearance: Secret
  • Certifications: DoD 8140 / 8570 Certified (e.g., Cloud+, GICSP, GSEC, Security+, SSCP, or greater)
Caplock Security is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, disability, or protected veteran status.
This position requires an active secret security clearance or the ability to obtain and maintain one. U.S. citizenship is required. Applicants selected will be subject to a government security investigation and must meet eligibility requirements for access to classified information.
Published August 10, 2026
Location Fort Belvoir, VA
Job Type Full-Time