Principal Software Engineer - TS/SCI - St. Louis
MKS2 TechnologiesAbout the role
MKS2 Technologies, LLC, an award-winning high growth small business, creates innovative and customer-centric technology solutions in the areas of Cyber Security, Instructional Design and Training, Software Engineering and IT Support Services to improve the security and well-being of our clients. Our commitment to excellence and our “Mission First” orientation has resulted in steady growth and an expanding client base across government agencies. We have employees nationwide and for the past three consecutive years were named one of the fastest growing Veteran-owned companies in the nation. Please take a moment to browse through our website and learn more about what it means to serve with MKS2.
Position Title
Principal Software Engineer - Geospatial Intelligence Platform
Position Type
Full-Time, On-Site
Reports To
Program Manager
Position Summary
Seeking a highly experienced Principal Software Engineer to lead the architectural design, development, and modernization of geospatial-intelligence core services for a National Geospatial-Intelligence Agency (NGA) initiative. This position is critical to transforming legacy systems into modern, cloud-native, microservices-based platforms. The successful candidate will drive technical excellence, mentor senior engineering teams, establish best practices in secure cloud environments, and directly influence the strategic technical direction of enterprise-level geospatial applications serving the Intelligence Community.
The Principal Software Engineer will work within an agile development environment utilizing secure AWS cloud infrastructure, containerized applications, and modern DevOps practices. This role demands not only exceptional technical depth but also the ability to articulate complex architectural decisions to executive leadership and government stakeholders.
Key Responsibilities
Technical Leadership & Architecture
- Design and architect enterprise-level geospatial microservices leveraging Python, React.js, and PostgreSQL technologies
- Establish technical standards and patterns for secure cloud development within TS/SCI-compliant AWS environments
- Conduct technical reviews and provide architectural guidance on critical components
- Evaluate emerging technologies and recommend adoption strategies aligned with security posture and business objectives
- Lead design sessions for complex system challenges and drive consensus among technical stakeholders
Development & Implementation
- Develop high-performance Python-based enterprise applications utilizing FastAPI/Flask frameworks
- Build responsive, data-intensive React.js front-end applications optimized for geospatial data visualization and interaction
- Design and implement RESTful APIs and microservices architecture following security-first principles
- Architect PostgreSQL database schemas supporting high-concurrency, high-volume geospatial queries
- Implement secure code practices aligned with NIST standards and government security baselines
Security & Compliance
- Ensure all solutions maintain Active TS/SCI security clearance compliance and protect Controlled Unclassified Information (CUI)
- Implement authorization, authentication, and encryption protocols for secure data handling
- Lead security code reviews and vulnerability assessments
- Collaborate with government security teams on compliance verification and audits
- Document security artifacts and maintain compliance documentation
Team Leadership & Mentoring
- Mentor senior and principal-level engineers on architectural patterns and technical excellence
- Establish code quality standards and best practices for the engineering organization
- Conduct technical interviews and contribute to hiring decisions for engineering roles
- Foster a culture of continuous learning through knowledge sharing and technical discussions
- Lead technical training sessions on emerging frameworks, secure development practices, and platform capabilities
Collaboration & Communication
- Work closely with program managers and government stakeholders to translate requirements into technical specifications
- Communicate complex technical concepts to non-technical audiences including executives and government officials
- Participate in enterprise architecture reviews and strategic planning sessions
- Represent the engineering organization in technical governance boards
- Create technical documentation, architecture decision records (ADRs), and design specifications
Required Qualifications
Education
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