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# Cleared Software Engineer - C++ / Python / Linux - Top Secret Required

- **Company:** APEX STAFFING LLC
- **Location:** Richardson, TX, United States
- **Salary:** $105,000.0 - $135,000.0
- **Contract:** Permanent contract
- **Skills:** Agile Methodology, Algorithm Design, Amazon Web Services, Advanced Message Queuing Protocol, C++ (Programming Language), Cloud Computing, Computer Engineering, Linux, Distributed Systems, Python (Programming Language), Linux System Administration, Cisco Nexus Switches, RabbitMQ, Real-Time Operating Systems, Ansible, Prometheus, Signal Processing, Software Engineering, SonarQube, Transmission Control Protocol (TCP), Web Applications, Openapi, Grafana, Software Troubleshooting, Gitlab, Git, Information Technology, Rancher, Atlassian Tools, Restful APIs, Terraform, Software Version Control, Docker, Vmware
- **Published:** August 11, 2026
- **Apply:** https://www.indeed.com/viewjob?jk=e04d5f5adbb56286

## About the Role

Applicants must meet the following requirements:

 * Active Top Secret (TS) security clearance
 * Ability to obtain SSBI
 * U.S. Citizenship
 * 3+ years of professional software engineering experience
 * Professional experience with C/C++
 * Experience with Python
 * Strong experience working in Linux environments
 * Experience with Git/version control
 * Experience working within Agile development environments
 * Bachelor's degree in Computer Science, Computer Engineering, Electrical Engineering, Physics, Mathematics, or a related required technical discipline

Highly Desired Experience

Experience in one or more of the following is highly desirable:

 * Digital Signal Processing (DSP) or signal processing
 * Real-time software or algorithm development
 * High-performance or distributed computing
 * TCP/IP networking
 * RabbitMQ, NATS, or AMQP
 * REST APIs / OpenAPI
 * Docker and Kubernetes
 * Helm or ArgoCD
 * GitLab, Nexus, or SonarQube
 * AWS, VMware, or other cloud technologies
 * Prometheus, Loki, or Grafana
 * Terraform, Ansible, or Packer
 * Rancher, RKE2, or K3S
 * DISA STIGs or CIS security benchmarks
 * Web-based GUI development
 * Jira and Confluence

Ideal Candidate

The strongest candidates will combine a solid C++/Python/Linux software engineering background with experience developing complex, real-time, distributed, or signal-processing systems in defense, aerospace, intelligence, or other mission-critical environments.

## Description

We are seeking experienced Software Engineers to support the development of advanced, mission-critical signal processing and distributed computing systems.

This is an excellent opportunity for engineers with strong C/C++, Python, and Linux experience who are interested in working on technically challenging systems throughout the full software development lifecycle.

What You'll Do

 * Design and develop software for distributed computing and signal processing systems
 * Support the complete software lifecycle, including design, development, integration, verification, validation, installation, and maintenance
 * Develop and maintain software in C/C++ and Python
 * Work extensively within Linux environments
 * Participate in software design, implementation, testing, and peer reviews
 * Troubleshoot software defects and support system changes
 * Collaborate with software, systems, and signal processing engineers
 * Support integration and installation of systems at company and customer facilities


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