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On Call Defense Contractor Software Engineer Jobs in Charleston, SC

Caeus

MTS Software Engineer

Charleston, SC · On-site

CAE's Defense and Security business unit focuses on helping prepare military customers to develop ... Designs,modifies, develops, writes, and implements software programming applications for training ...

Caeus

MTS Software Engineer

Charleston, SC · On-site

CAE's Defense and Security business unit focuses on helping prepare military customers to develop ... Designs,modifies, develops, writes, and implements software programming applications for training ...

CAE, Inc.

MTS Software Engineer

Charleston, SC · On-site

CAE's Defense and Security business unit focuses on helping prepare military customers to develop ... of software design, implementation, testing, and deployment. Engineering solutions must be ...

CAE, Inc.

MTS Software Engineer

Charleston, SC · On-site

CAE's Defense and Security business unit focuses on helping prepare military customers to develop ... of software design, implementation, testing, and deployment. Engineering solutions must be ...

DAS Technology Group

Senior Software Engineer

Charleston, SC · On-site

$114K - $151K/yr

DAS Technology Group is seeking an experienced Software Engineer to join their team. In this role ... the RF/Microwave, Semiconductor & Defense and Space area. Founded in 2021, the company is ...

SAIC

Software Systems Engineer

Hanahan, SC · On-site

$156K - $185K/yr

Prior experience in a DoD, IC, or other federal contracting environment. * Proficiency with React ... Our robust portfolio of offerings across the defense, space, intelligence, and civilian markets ...

SAIC

Software Systems Engineer

Hanahan, SC · On-site

$156K - $185K/yr

Software Subcategory: SW Systems Engr Schedule: Full-Time Shift: Day Job Travel: Yes - 10% of the ... Prior experience in a DoD, IC, or other federal contracting environment. * Proficiency with React ...

SAIC

Software Systems Engineer

North Charleston, SC · On-site

$165K - $195K/yr

Software Subcategory: SW Systems Engr Schedule: Full-Time Shift: Day Job Travel: Yes - 10% of the ... Prior experience in a DoD, IC, or other federal contracting environment. * Proficiency with React ...

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All JobsOn Call Defense Contractor Software Engineer JobsOn Call Defense Contractor Software Engineer Jobs in Charleston, SC

On Call Defense Contractor Software Engineer information

See Charleston, SC salary details

$59.4K

$138.1K

$192.3K

How much do on call defense contractor software engineer jobs pay per year?

As of Sep 5, 2026, the average yearly pay for on call defense contractor software engineer in Charleston, SC is $138,055.00, according to ZipRecruiter salary data. Most workers in this role earn between $112,300.00 and $161,900.00 per year, depending on experience, location, and employer.

What is the difference between On Call Defense Contractor Software Engineer vs Defense Contractor Software Engineer?

AspectOn Call Defense Contractor Software EngineerDefense Contractor Software Engineer
CredentialsTypically requires security clearances, relevant software certifications, and industry-specific trainingSimilar credentials, often including security clearances and software development certifications
Work EnvironmentOn-call basis, often responding to urgent needs, with potential travel to military or government sitesStandard office or remote work within defense projects, with scheduled hours
Employer & Industry UsagePrimarily contracted by defense agencies, working on critical defense systemsEmployed by defense contractors, involved in software development for military applications

In summary, while both roles require security clearances and similar technical skills, the On Call Defense Contractor Software Engineer is distinguished by its on-demand, urgent response nature and potential travel, whereas the Defense Contractor Software Engineer typically works regular hours on ongoing projects.

What are the most commonly searched types of Defense Contractor Software Engineer jobs in Charleston, SC?

The most popular types of Defense Contractor Software Engineer jobs in Charleston, SC are:

What are popular job titles related to On Call Defense Contractor Software Engineer jobs in Charleston, SC?

For On Call Defense Contractor Software Engineer jobs in Charleston, SC, the most frequently searched job titles are:

What job categories do people searching On Call Defense Contractor Software Engineer jobs in Charleston, SC look for?

The top searched job categories for On Call Defense Contractor Software Engineer jobs in Charleston, SC are:

On Call Defense Contractor Software Engineer jobs near you
Infographic showing various On Call Defense Contractor Software Engineer job openings in Charleston, SC as of August 2026, with employment types broken down into 79% Full Time, and 21% Contract. Highlights an 100% In-person job distribution, with an average salary of $138,055 per year, or $66.4 per hour.

Software Engineer

Science Applications International Corporation

North Charleston, SC • On-site

Full-time

Re-posted 10 days ago

Key responsibilities

  • Own full-stack development and technical maturation of a government software prototype transitioning to a Program of Record.

  • Design, develop, and maintain APIs and services using Go and Python, and refactor prototype code to meet security and scalability standards.

  • Collaborate with cybersecurity personnel to implement RMF-compliant controls, support ATO accreditation, and contribute to security documentation.

SAIC rating

7.6

Company rating: 7.6 out of 10

Based on 81 frontline employees who took The Breakroom Quiz

103rd of 226 rated it services

Job description

SAIC is seeking a Software Engineer to own full stack development and technical maturation of a government software prototype as it transitions from research/prototype status to a Program of Record (PoR) for our customer site in North Charleston, SC.

Key Responsibilities:

  • Serve as the full-stack engineer for a government software system, overseeing backend services, frontend applications, and supporting infrastructure.
  • Design, develop, and maintain APIs and services using Go and Python, while driving the technical roadmap to transition a research prototype into a production-ready system for a Program of Record.
  • Refactor, re-architect, and harden prototype code to meet security, scalability, maintainability, and supportability standards required for fielded DoD/government systems.
  • Collaborate with cybersecurity/ISSO personnel to implement RMF-compliant technical controls, support ATO accreditation, and contribute to required security documentation/artifacts.
  • Enforce secure software development practices, including secure coding standards, vulnerability management, container hardening, secrets management, logging/auditing, and secure CI/CD pipelines.
  • Integrate and advocate for AI-assisted development tools to enhance code quality, security posture, and software delivery efficiency.
SAIC is a premier mission integrator focused on advancing the power of technology and innovation to serve and protect our world. Our robust portfolio of offerings across the defense, space, intelligence, and civilian markets includes secure high-end solutions in mission IT, enterprise IT, engineering services, and professional services. We integrate emerging technology, rapidly and securely, into mission critical operations that modernize and enable critical national imperatives.

We are approximately 23,000 strong; driven by mission, united by purpose, and inspired by opportunities. SAIC is an Equal Opportunity Employer. Headquartered in Reston, Virginia, SAIC has annual revenues of approximately $7.3 billion. For more information, visit saic.com. For ongoing news, please visit our newsroom.

Required Education and Experience:

  • 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.
  • 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.

Desired Qualifications:

  • 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. 

Required Security Clearance:

  • Must be a US Citizen with an active Interim Secret clearance to start and the ability to obtain and maintain a secret security clearance.

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