Senior Software Systems Engineer - DoD Space & SE&I

KBR, Inc

El Segundo (CA)

On-site

USD 121,000 - 151,000

Full time

6 days ago
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Benefits offered by this job

401K match
Medical insurance
Dental
Vision
Life insurance
AD&D
Flexible spending account
Disability insurance
Paid time off
Flexible schedule

Job summary

KBR, Inc is seeking a Software Systems Engineer to join the National Security Solutions team, shaping space Communications and DoD mission software. You will lead SE&I activities, define requirements, and integrate software across prime contractors and DoD environments to support USSF satellite programs.

The role requires a Bachelor’s in CS/SE, 5+ years in software systems engineering, and a Secret clearance.

Qualifications

  • Ability to obtain and maintain a Secret clearance.
  • Bachelor’s degree in computer science, software engineering, systems engineering, or related discipline.
  • 5 years’ experience in software systems engineering or software integration, including defining requirements and leading integration across teams.
  • Demonstrated experience in software systems engineering, including requirements decomposition, architecture definition, interface specifications, verification strategy, and integration oversight.
  • Strong understanding of secure software development lifecycle, secure design principles, and embedding security requirements early in the lifecycle.
  • Experience with service‑oriented architectures, microservices, and designing/assessing secure APIs and data interfaces.
  • Familiarity with cybersecurity processes relevant to DoD delivery, including RMF awareness and ATO‑supporting technical artifacts.
  • Proven ability to work across software, systems, and cybersecurity teams and to drive alignment among Government stakeholders and prime contractors.
  • Strong written/verbal communication skills; able to produce and brief clear recommendations, risks, and options to non‑developer stakeholders.
  • Demonstrated ability to manage competing priorities in regulated, mission‑driven environments.
  • Proficient in Microsoft Office products (Word, Excel, Powerpoint).

Responsibilities

  • Provide SE&I leadership for secure software applications supporting DoD mission planning and operations, with emphasis on integration oversight rather than feature factory development.
  • Serve as the Government’s technical integrator across PTS‑G software elements other Space Force / DoD product teams, ensuring interoperability, data flow, message correctness, and operational alignment.
  • Lead Government coordination with prime contractors and stakeholders to define mission use cases, system constraints, and integration priorities within governed DoD environments.
  • Develop, refine, and manage software and interface requirements for prime contractors, including: Interface requirements and message/data definitions (e.g., schema/API expectations); Operational constraints for IL environments and cross‑domain data movement.
  • Produce and maintain Government technical artifacts used for contractor direction and evaluation, such as: ICDs; IRS; verification cross‑references and requirements traceability; Test objectives, evaluation criteria, and acceptance measures (software integration focused).
  • Plan and oversee software integration into restricted DoD operating environments, including air‑gapped and classified deployments, addressing sustainment constraints, network limitations, and accreditation realities.
  • Coordinate software deployment and integration activities with Government teams and primes using DoD‑aligned DevSecOps pipelines, including automated testing, security scanning, artifact management, and compliant delivery processes.
  • Ensure end‑to‑end integration supports mission workflows requiring cross‑domain data transport (when applicable), and that interfaces are testable and operationally supportable.
  • Define and lead software integration verification strategy: integration test approach, exit criteria, defect triage patterns, and readiness recommendations for Government decisions.
  • Drive continuous improvement via architecture and tooling recommendations to improve integration reliability, repeatability, and sustainment readiness.
  • Develop and present decision packages, technical recommendations, and risk assessments to customers at multiple levels; facilitate technical interchange with primes and Government teams.
  • Mentor engineers on secure integration patterns, interface discipline, verification rigor, and defense software engineering best practices.

Skills

Secret clearance
Software systems engineering
Requirements decomposition
Interface specifications
Verification strategy
Cross-team collaboration
Secure SDLC
SOA / microservices
DoD cybersecurity RMF
Communication skills

Education

Bachelor’s degree in computer science, software engineering, systems engineering, or related discipline

Tools

Docker
Kubernetes
Jira
Confluence

Job description

KBR, Inc is seeking a Software Systems Engineer to join the National Security Solutions team, shaping space Communications and DoD mission software. You will lead SE&I activities, define requirements, and integrate software across prime contractors and DoD environments to support USSF satellite programs.

The role requires a Bachelor’s in CS/SE, 5+ years in software systems engineering, and a Secret clearance.

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