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Principal Software Engineer, Product Security

Spire

$202,500 - $238,500
Dec 5, 2025
Boulder, CO, US
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Spire is seeking a senior technical lead to own product security strategy and execution to push toward CMMC Level 2+ compliance for CUI handling in their defense-relevant environment.

Requirements

  • Mastery of container security (Docker/K8s), tools (Trivy/Snyk/Falco/OPA), languages for tooling (Python/Rust).
  • Fluency in threats (injection, lateral moves), controls (800-53 mappings), DevSecOps.
  • SBOMs, zero-trust, SIEM-fed logging.
  • AWS sec services (GuardDuty, Security Hub, Config), IaC (Terraform).
  • Embedded/satellite sec (secure boot, updates).
  • Open-source sec contribs.
  • Relevant certs (CSSLP/OSCP/GIAC) if reflecting real expertise.

Responsibilities

  • Integrate security automation into our pipelines (e.g., GitHub Actions/ArgoCD for SAST/DAST/SCA, SBOM, vuln scanning).
  • Evolve standard libraries/infra for authn/authz and logging and other run-time security concerns.
  • Hands-on implementation to meet/exceed CMMC Level 2 controls (AC, IA, SC, SI families)—e.g., encryption, secure configs, monitoring—leveraging our ISO 27001 base and federal experience.
  • Conduct security architecture reviews, code audits, and threat modeling.
  • Identify/fix issues like API vulns or supply chain risks.
  • Mentor and assign work to security engineers, advancing secure practices via code reviews, pair sessions, and tooling.
  • Define the security perimeter within software architectures to establish clear trust boundaries where security requirements will be enforced across all components.

Other

  • 10+ years in software/security engineering, 6+ in sec-focused roles.
  • Shipped secure cloud systems (AWS), CI/CD security, and compliance projects (CMMC/FedRAMP/NIST).
  • Proven mentoring, leading initiatives, influencing in small teams.
  • Ability to engage with staff internally in a constructive way and represent Spire externally.
  • Work a minimum of three days per week in the office.