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On Call Defense Contractor Software Engineer Jobs in Charleston, SC

Saic

Software Systems Engineer

North Charleston, SC · On-site

$120 - $170/hr

Description SAIC is seeking a Software Systems Engineer to own full stack development and technical ... Prior experience in a DoD, IC, or other federal contracting environment. * Proficiency with React ...

Saic

Software Systems Engineer

Hanahan, SC · On-site

$110 - $150/hr

Description SAIC is seeking a Software Systems Engineer to own full stack development and technical ... 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 ...

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 ...

PEMCCO, Inc.

Software Developer

Hanahan, SC · On-site

$29.33 - $44/hr

Experience supporting Department of Defense or Federal Government programs * Experience maintaining ... Develop your programming and software development expertise * Work alongside experienced technical ...

PEMCCO

Software Developer

Hanahan, SC · On-site

$29.33 - $44/hr

Experience supporting Department of Defense or Federal Government programs * Experience maintaining ... Develop your programming and software development expertise * Work alongside experienced technical ...

PEMCCO, Inc.

Software Developer

Hanahan, SC · On-site

$29.33 - $44/hr

Experience supporting Department of Defense or Federal Government programs * Experience maintaining ... Develop your programming and software development expertise * Work alongside experienced technical ...

PEMCCO

Software Developer

Hanahan, SC · On-site

$61 - $92/hr

Experience supporting Department of Defense or Federal Government programs * Experience maintaining ... Develop your programming and software development expertise * Work alongside experienced technical ...

Fathom 4, LLC

Software Integration Engineer

Charleston, SC · On-site

$94K - $126K/yr

Fathom 4 (www.fathom4.com) is the kind of defense services company that you've always wanted to ... RESPONSIBILITIES: • Integrate software baselines for current and future systems. • Analyze ...

Fathom 4, LLC

Software Integration Engineer

Hanahan, SC · On-site

$94K - $126K/yr

Fathom 4 (www.fathom4.com) is the kind of defense services company that you've always wanted to ... RESPONSIBILITIES: · Integrate software baselines for current and future systems. · Analyze ...

PEMCCO, Inc.

Lead Software Developer

Hanahan, SC · On-site

$36.43 - $54.64/hr

PEMCCO is seeking a Lead Software Developer to develop, enhance, and maintain complex software ... Experience supporting Department of Defense or Federal Government programs * Experience developing ...

PEMCCO

Lead Software Developer

Hanahan, SC · On-site

$36.43 - $54.64/hr

PEMCCO is seeking a Lead Software Developer to develop, enhance, and maintain complex software ... Experience supporting Department of Defense or Federal Government programs * Experience developing ...

PEMCCO, Inc.

Lead Software Developer

Hanahan, SC · On-site

$36.43 - $54.64/hr

PEMCCO is seeking a Lead Software Developer to develop, enhance, and maintain complex software ... Experience supporting Department of Defense or Federal Government programs * Experience developing ...

Fathom 4, LLC

Software Developer

Charleston, SC · On-site

Fathom 4 (www.fathom4.com) is the kind of defense services company that you've always wanted to ... Works with Government Systems Engineering and Software Development teams to Identify and prioritize ...

Fathom 4, LLC

Software Developer

Hanahan, SC · On-site

Fathom 4 (www.fathom4.com) is the kind of defense services company that you've always wanted to ... Works with Government Systems Engineering and Software Development teams to Identify and prioritize ...

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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 Systems Engineer

Saic

North Charleston, SC • On-site

$120 - $170/hr

Other

Posted 4 days ago

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

Description

SAIC is seeking a Software Systems 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.

Job Duties:
  • 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.
QualificationsRequired 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.
  • 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.
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.
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