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# Software Systems Engineer

- **Company:** Science Applications International Corporation
- **Location:** North Charleston, SC, United States
- **Salary:** $80,001.0 - $120,000.0
- **Contract:** Permanent contract
- **Skills:** Application Programming Interfaces (APIs), Artificial Intelligence, Amazon Web Services, Cloud Database, Continuous Integration, Data Security, Cursor, Distributed Systems, Hardware Design, Python (Programming Language), Secure Coding, Software Engineering, Software Systems, Systems Integration, Software Vulnerability Management, GitHub Copilot, ReactJS, Claude Code, AI Coding Agents, Backend, SC Clearance, Containerization, Kubernetes, Front End Software Development, Data Pipelines, Docker, User Administration, Plan of Action and Milestones
- **Published:** October 26, 2026
- **Apply:** https://www.techcareers.com/job.asp?id=3467351114&tx=JT9688TYV&pt=1&aff=0B19D771-A501-4A5E-8338-2A822B784D54&utm_source=Job%20Feed&utm_medium=textkernel&utm_campaign=DE&utm_term=0B19D771-A501-4A5E-8338-2A822B784D54

## About the Role

* Bachelors and five (5) years or more work experience; (4) four years of additional work experience accepted in lieu of degree.
 * Demonstrated proficiency in Go, Python.
 * Systems Integration Experience: Demonstrated ability to integrate heterogeneous hardware, communications links, containerized software services, and data pipelines into a unified, operationally deployable system. Preferably experience with multi-transport networking, pub/sub architectures, edge-to-cloud data federation, and API/protocol translation across diverse sensor or platform types.
 * Active, hands-on use of AI development tools (e.g., Claude Code, GitHub Copilot, Cursor, or similar AI coding assistants) as part of daily engineering work.
 * Practical experience with cybersecurity-conscious software engineering - secure coding practices, vulnerability remediation, container/infrastructure hardening, or similar.
 * Experience taking prototype/research-grade code and maturing it into a production, supportable system.

Required Security Clearance:

 * Must be a US Citizen, no clearance required to start but must be able to obtain and maintain an active Secret clearance., * Direct experience supporting an ATO package (SSP development, control implementation, POA&M management, eMASS).
 * Experience with containerization/orchestration (Docker, Kubernetes) and CI/CD pipeline security.
 * Familiarity with DoD software acquisition processes and prototype-to-Program-of-Record transitions.
 * Experience with cloud environments (AWS GovCloud or similar) in an accredited/compliance-driven context.
 * Prior experience in a DoD, IC, or other federal contracting environment.
 * Proficiency with React and Rust.
 * Familiarity with the general lifecycle of moving a system through security accreditation (RMF, ATO, or equivalent commercial/compliance frameworks), prior direct ATO experience is a strong plus but not mandatory.

## Description

* Resilient System Design: Develop distributed systems for secure, reliable operation in degraded, bandwidth-limited, and autonomous environments.
 * Full-Stack Development: Build and maintain backend services, frontend applications, and infrastructure, hardening prototypes to meet DoD security, scalability, and operational standards.
 * Data Security & Compliance: Implement secure data pipelines and protocols, ensure RMF compliance, support ATO accreditation, and follow secure development practices like container hardening and CI/CD security.
 * Networking & Integration: Design segmented networks, real-time communications, hardware integration, and modular deployments for mission-critical applications.
 * Operational & Mission Support: Create user-centric tools for tactical use, diagnostics, air-gapped provisioning, and deliver scalable, mission-aligned engineering solutions.