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TS/SCI Cleared: Principal Software and Integration Engineer

ClearanceJobs
Washington, DC Full Time
POSTED ON 4/28/2026
AVAILABLE BEFORE 6/16/2026

Principal Software and Integration Engineer (TS/SCI)

Location: Northern Virginia (preferred) or U.S. Remote (must support on-site work in SCIF environments)

Clearance: Active TS/SCI required; CI Polygraph preferred or willingness to obtain

Type: Full-Time


About the Role

We are seeking a Principal Software & Integration Engineer to lead the deployment, integration, and operational success of mission-critical software systems in classified government environments.

This is a highly hands-on, customer-facing role supporting a fast-moving initiative with the National Geospatial-Intelligence Agency (NGA) as part of a Quick Reaction (QX) pilot program, in partnership with a major defense contractor.

You will likely be the only on-site technical representative in secure environments (SCIFs), making you a critical bridge between customers, mission needs, and internal engineering teams.

This role is ideal for someone who thrives in ambiguous, high-stakes environments, enjoys solving complex integration challenges, and can operate with a high degree of autonomy.


What You’ll Be Working On

You’ll support deployment and integration of advanced analytics platforms focused on:

  • Satellite Imagery & Analytics:
  • Optical and SAR (synthetic aperture radar) data integration
  • Near real-time analytics (1–6 hour latency)
  • AI/ML & LLM Systems:
  • Agentic AI solutions
  • Integration of LLMs and Small Language Models (SLMs) in secure environments

This is cutting-edge work with direct national security impact.


Key Responsibilities

Deployment & Integration

  • Lead installation, configuration, and deployment of software systems in:
  • AWS GovCloud / GCP environments
  • Air-gapped / on-prem / classified (SCIF) environments
  • Integrate systems with legacy government technologies, including:
  • XML-based data formats
  • SOAP-based services
  • Normalize and transform data from disparate sources into internal platforms

Customer-Facing Technical Leadership

  • Serve as the primary technical point of contact for government stakeholders
  • Operate directly within SCIF environments (NGA/NRO)
  • Translate mission needs into technical solutions
  • Troubleshoot issues in real time across software, infrastructure, and data layers

Systems Troubleshooting & Operations

  • Diagnose and resolve issues across:
  • Application layer
  • Infrastructure and cloud environments
  • Networking and data pipelines
  • Support system validation, testing, and operational readiness

Cross-Functional Collaboration

  • Partner with internal engineering, product, and leadership teams
  • Provide feedback from the field to improve product and deployment strategy
  • Support ongoing system enhancements and mission expansion


What They’re Really Looking For (From the Hiring Team)

  • A hands-on “doer”, not a purely academic engineer
  • Someone comfortable being the only technical representative from your company in the room
  • Strong customer presence - likable, communicative, and trusted
  • Deep technical capability, but also able to figure things out in unknown environments
  • Comfortable working in classified, high-security environments
  • Able to operate with minimal guidance and high autonomy


Required Qualifications

  • Active TS/SCI clearance (CI Poly preferred or willingness to obtain)
  • ~10 years of experience in:
  • Software Engineering
  • Systems Integration
  • Deployment / Solutions Engineering
  • Strong experience deploying and integrating software in customer environments
  • Experience working directly with government or defense customers
  • Strong understanding of:
  • Cloud environments (AWS, GCP)
  • On-prem / hybrid architectures
  • Experience troubleshooting across:
  • Applications
  • Infrastructure
  • Data systems
  • Excellent communication skills - able to explain technical concepts clearly


Critical Technical Experience

  • Cloud Platforms: GCP (preferred), AWS (especially GovCloud)
  • Data & Integration:
  • XML, SOAP (must be comfortable with legacy systems)
  • Data transformation / normalization
  • PostgreSQL / SQL
  • Programming/Scripting:
  • Python, JavaScript, Bash, or similar
  • Infrastructure & Systems:
  • Linux environments
  • Networking fundamentals


AI / ML / Emerging Tech Exposure (Highly Valued)

  • Experience working with:
  • Large Language Models (LLMs)
  • Small Language Models (SLMs) for secure environments
  • Familiarity with deploying AI systems in restricted or air-gapped environments
  • Ability to adapt AI capabilities across cloud and classified systems


Work Environment & Expectations

  • Highly customer-facing - especially within SCIF environments
  • May require regular presence in Northern Virginia / DC area
  • Fast-paced, mission-driven environment with shifting priorities
  • Work is often 80% solution → deploy → iterate, not perfection-first
  • Occasional travel and on-site work required

Salary.com Estimation for TS/SCI Cleared: Principal Software and Integration Engineer in Washington, DC
$185,232 to $212,077
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