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Software Engineer with Security Clearance

TEKsystems c/o Allegis GroupRedondo Beach, CA🇺🇸United StatesPosted 9 Sept 2026

Why This Role Stands Out

Leverage your C++/Linux expertise in a crucial role on mission-critical national security systems, offering significant opportunities for technical growth and impact within a highly respected organization. This position is ideal for a mid-senior engineer with a TS/SCI clearance who thrives in collaborative, fast-paced Agile environments and is eager to contribute to cutting-edge technology. Apply today to join a team developing innovative solutions for vital operational missions.

Quick Overview

Salary
$50 - $85/hr
Seniority
Mid Senior
Employment type
Temporary/Casual
Work mode
On Site
Location
Redondo Beach, CA, United States
Posted
Yesterday
ScrumAgileBambooConfluenceC++GitJavaJiraPerlPython

Job Description

Intermediate/Senior Software Engineer (C++/Linux)

  • TS/SCI Required
Location: Redondo Beach, CA (100% On-Site in SCIF)
Employment Type: Contract-to-Hire (12 Months)
Security Clearance: Active TS/SCI Required About the Opportunity
Our client is seeking an Intermediate to Senior Software Engineer to join the Ground Solutions and Mission Support (GSMS) Software Integrated Project Team (IPT) in Redondo Beach, CA. This highly visible program supports mission-critical national security systems and develops software capabilities for operational missions across multiple classified programs. The GSMS organization consists of more than 100 software engineers working across development, sustainment, and operations efforts. This role offers the opportunity to contribute to advanced technologies and innovative solutions while collaborating with experienced engineers and subject matter experts in a highly classified environment.

Key Responsibilities Perform as a C++ software developer in a fast-paced Agile team environment utilizing Red Hat Enterprise Linux (RHEL) virtual machines, servers, and workstations. Design, develop, and unit test new software capabilities based on Mathematical Algorithm Requirements (MARs). Analyze, troubleshoot, and resolve software defects identified through Discrepancy Reports (DRs). Collaborate closely with Software IPT subject matter experts, systems engineers, and senior engineering staff across multiple software subsystems.

Participate in Agile development activities including sprint planning, reviews, and retrospectives. Contribute to the development and sustainment of mission-critical operational software products. Support software integration, testing, and deployment activities within a classified environment. Required Qualifications Bachelor's degree in a STEM field with 5-8 years of experience, Master's degree with 3-6 years of experience, or PhD with 1-4 years of experience. Additional relevant software development experience may be considered in lieu of a degree.

Active TS/SCI clearance (or active SSBI with the ability to obtain SCI prior to start). Strong object-oriented programming skills with demonstrated proficiency in C++. Experience developing in a Red Hat Enterprise Linux (RHEL) environment. Strong problem-solving, troubleshooting, and analytical skills. Ability to work effectively in a highly collaborative team environment. U.S. Citizenship required.

Preferred Qualifications

Experience with DevSecOps and test automation practices. Experience with one or more programming languages including: C
C++
Java
Python
Perl Strong mathematical and algorithm development background. Experience working within an Agile/Scrum development environment. Familiarity with Atlassian tools including: Jira
Confluence
Bitbucket
Bamboo Experience using Git version control in Linux environments. Active SCI clearance. Work Environment 100% on-site position located within a Sensitive Compartmented Information Facility (SCIF) in Redondo Beach, CA.

Collaborative engineering environment supporting classified national security missions. Direct interaction with highly skilled software engineers, technical leaders, and government stakeholders. Why Join? This is an opportunity to work on some of the nation's most advanced and impactful technology programs. From groundbreaking aerospace achievements to next-generation defense capabilities, our client has a long history of innovation and technological leadership. Engineers on this team directly contribute to systems that have national and global impact.

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