81 system software engineer jobs at 37 companies in Tappahannock, VA

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Intermediate Software Engineer
Dahlgren, Virginia, United States
$76k-$156k/yr OnsiteFull Time
CACI
CACINYSE: CACI: Provides information technology and professional services to government clients.
3+ YOEActive Secret clearance ability, Bachelor's degree (STEM), 3 years software/systems engineering, experience with C++, C, Java, Python, GitLab/YAML/Artifactory, DevSecOps and Agile practices.
GITLAB, YAML, Artifactory, C++, C, Python, Batch, Java, Jira, Atlassian, NetBeans
1mo
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SOFTWARE ENGINEER II - TESTING
Hollywood, Maryland, United States
$96k-$115k/yr OnsiteFull Time
Platform Aerospace
Platform Aerospace: Provides unmanned aircraft systems and rapid aircraft modification services.
2+ YOEBachelor's in engineering, 2+ years software development experience, embedded systems experience, proficiency in C/C++ and familiarity with Python, experience with debugging/testing/version control, ability to obtain security clearance, strong communication and problem-solving skills.
C, C++, Python, Linux, Hardware-in-the-loop (HIL)
3w
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Senior Software Engineer
Richmond, Virginia, United States
$130k-$170k/yr HybridFull Time
CoStar Group
CoStar GroupNASDAQ: CSGP: Global provider of commercial and residential real estate data.
6+ YOEBachelor's degree,6+ years software development with OOP,experience building distributed service-oriented systems,RESTful APIs with C#,Git,CI/CD familiarity,and AI adoption experience.
React, TypeScript, C#, .NET Core, Git, SQL, AWS, Bedrock, Elasticsearch, OpenSearch
3w
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Senior Software Engineer
Richmond, Virginia, United States
$130k-$170k/yr HybridFull Time
CoStar Group
CoStar GroupNASDAQ: CSGP: Provides global real estate information, analytics, and online marketplaces.
6+ YOEBachelor's degree,6+ years OOP software development,experience with C#,RESTful APIs,React and TypeScript,Git,CI/CD,and hands-on AI adoption; experience architecting distributed service-oriented systems.
React, TypeScript, C#, .NET Core, Git, CI/CD, SQL, AWS, Bedrock, Elasticsearch, OpenSearch
3mo
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Software Engineer (All Levels)
Annapolis Junction, Maryland, United States
OnsiteFull Time
Adaptic
Adaptic: Defense contractor providing software, engineering, and cybersecurity mission support.
TS/SCI with polygraph; experience in Python, Java, C++, or similar; large-scale data, distributed systems, or real-time processing; degree in Computer Science or Software Engineering (or equivalent); collaborative mindset; plus AWS, DevOps/CI/CD, Docker/Kubernetes and ML exposure.
Python, Java, C++, Docker, Kubernetes, AWS, CI/CD
1mo
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Lead Software Engineer, Data Protection
McLean or Richmond or New York City or Plano
$179k-$246k/yr OnsiteFull Time
Capital One
Capital OneNYSE: COF: Financial services offering credit cards, banking, and loans.
4+ YOEBachelor's degree, 4+ years software engineering experience, 1+ year cloud experience; preferred: Master's, extensive experience in Python/Java/TypeScript/SQL, AWS and schema validation systems, infrastructure as code, and security or AWS certifications.
Go, Python, TypeScript, SQL, CUE, JSON Schema, PostgreSQL, Aurora, Docker, ECS Fargate, Lambda, Step Functions, EventBridge, CDK, AWS, Microsoft Azure, Google Cloud, Java, JavaScript, Terraform, CloudFormation, GitHub Copilot, Claude Code
2mo
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Software Engineer
King George or Dahlgren
OnsiteFull Time
Southeastern Computer Consultants
Southeastern Computer Consultants: Engineering and training solutions for military weapon systems.
4+ YOEU.S. citizen with active Secret clearance; 4 years combat system shipboard experience on AEGIS or SSDS with at least 2 CIC deployments; strong multitasking, attention to detail, organization, and follow-up skills. Preferred: 3 years using ATD, ACTS, BFTT scenarios.
Advanced Training Domain (ATD), AEGIS Combat Training System (ACTS), Battle Force Tactical Training (BFTT), AEGIS, SSDS
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Senior Software Developer
Dahlgren, Virginia, United States
$120k-$150k/yr OnsiteFull Time
Modern Technology Solutions
Modern Technology Solutions: A technical services providing advanced modeling, simulation, and analysis for defense customers.
7+ YOEActive Secret clearance and U.S. citizenship, Bachelors in CS/Comp Engineering or related, 7+ years developing high-fidelity C++ modeling and simulation for aircraft/missile/sensor systems, EM development practices, Python/MATLAB experience preferred.
C++, Python, MATLAB, DevSecOps
2w
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Software Engineer (Modeling & Simulation) ATC Systems
Patuxent River, Maryland, United States
OnsiteFull Time
PaylocityNASDAQ: PCTY: Provides cloud-based human capital management and payroll software.
5+ YOE5+ years software engineering experience building or maintaining simulation engines; bachelor\u0002s degree in CS or related field; mastery of C++, Java, or Python; HLA/DIS and Git experience; eligible for U.S. Secret clearance.
C++, Java, Python, High-Level Architecture (HLA), Distributed Interactive Simulation (DIS), Git, GitLab, CI/CD, Agile, Windows, Linux
2mo
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Software and Systems Engineer
Stafford, Virginia, United States
OnsiteFull Time
ManTech
ManTech: Provides technology solutions for defense and intelligence agencies.
12+ YOESenior-level software and systems engineering role requiring advanced SLDC, DevSecOps, and DoD experience.
RHEL, SELinux, fapolicy, systemd, Kernel tuning, OpenShift, Docker, Podman, KVM, Red Hat Satellite, Ansible, Automation Platform, CI/CD, Git, Jira, Confluence, IdM/FreeIPA, LDAP, Active Directory, MFA, OpenSSL, Keytool, Bash, Python, REST, JSON, XML
3d
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Embedded Software Engineer
King George, Virginia, United States
$69k-$158k/yr OnsiteFull Time
Booz Allen Hamilton
Booz Allen HamiltonNYSE: BAH: Provides technology and management consulting services to diverse organizations.
3+ YOE3+ years embedded systems experience with microcontrollers/FPGA, proficiency in C/C++, hardware interfaces (SPI, UART), debugging, interpreting schematics, and Secret clearance.
C, C++, FPGA, SPI, UART
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Embedded Software Engineer
King George, Virginia, United States
$69k-$158k/yr OnsiteFull Time
Booz Allen Hamilton
Booz Allen HamiltonNYSE: BAH: Consulting and technology services for government and commercial clients
3+ YOE3+ years embedded systems experience with microcontrollers/FPGA, proficiency in C/C++, SPI/UART, ability to read schematics/datasheets, security clearance (Secret) required.
C, C++, FPGA, microcontroller, SPI, UART
3w
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Senior Software Engineer Applied AI
Richmond or United States
RemoteFull Time
AMC Health
AMC Health: Provides remote patient monitoring and virtual care technology.
7+ YOE7+ years building production backend systems, strong Python, cloud/distributed systems experience (AWS), hands-on LLM/generative AI and ML lifecycle experience, and disciplined work in regulated environments.
Python, AWS, LLMs
1w
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Computer Systems Software Developer
King George, Virginia, United States
$115k-$125k/yr OnsiteFull Time
Future Technologies
Future Technologies: Provides technical engineering and mission support for defense systems.
BS in computer science/engineering, experience with Windows and Red Hat Enterprise Linux, debugging and optimization, integrated software/hardware systems; proficiency in Java/C#/C++, and tools like Jira, Jenkins, GitLab.
Windows, Red Hat Enterprise Linux, Java, C#, C++, Jira, Jenkins, GitLab
2mo
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Senior Software Architect
Lexington Park, Maryland, United States
$112k-$168k/yr HybridFull Time
Precise Systems
Precise Systems: Provider of engineering and technical services for defense programs.
12+ YOEBachelor's in a technical field, 12+ years software/systems engineering experience, US citizenship, able to obtain Secret clearance (Top Secret preferred), strong software architecture, systems engineering, Agile/DevSecOps knowledge.
Agile, Scrum, Kanban, SAFe, DevSecOps, Risk Management Framework (RMF), Capability Maturity Model Integration (CMMI), Commercial-Off-The-Shelf (COTS)
1mo
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Data Integrity Engineer (Avionics Software/Data Analysis)
Lexington Park or Patuxent River
$100k-$135k/yr OnsiteFull Time
Saalex
Saalex: Provides engineering, IT, and mission support for defense agencies.
3+ YOEBS in CS/EE or related, 3+ years relevant experience, proficiency in software engineering fundamentals, experience with Python/Java/C++, systems engineering knowledge, avionics understanding, strong technical writing, and active Secret clearance.
Python, Java, C++
1mo
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Software Developer- SME
Quantico, Virginia, United States
$165k-$175k/yr HybridFull Time
GovCIO
GovCIO: Provides technology and mission support services to federal agencies.
10+ YOEHigh school with 10+ years (or commensurate experience). Top Secret w/SCI clearance and IAT II required. Strong PL/SQL coding skills preferred; experience with NCIS Case Management System and Department of Navy networks desirable.
PL/SQL, C++, Visual Basic, ABAP, Java, XTML, NCIS Case Management System
2mo
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SEDSS- Senior Systems Engineer **
Patuxent River, Maryland, United States
$120k-$176k/yr OnsiteFull Time
SimVentions
SimVentions: Provides engineering and technology services for defense customers.
9+ YOESecret clearance required; 9-11 years software and systems engineering; BS in engineering; experience with military avionics; on-site at Patuxent River, MD
MBSE, DOD-STD-2167A, MIL-STD-498, IEEE 12207, Agile, SAFe
2mo
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Systems Engineer - Level 2
Edwards AFB or Palmdale or Fort Worth or Las Vegas or Marietta or Patuxent River or California or Georgia or Maryland or Nevada or Texas
$73k-$129k/yr OnsiteFull Time
Lockheed Martin
Lockheed MartinNYSE: LMT: Designs and manufactures global security and aerospace systems.
US citizen with a Bachelor’s degree in a STEM discipline, experience in systems engineering development/decomposition, familiarity with hardware/software integration, test planning, and related tools/processes.
C, C++, Python, MATLAB, DOORS, JIRA, CATIA, Dimension SPAR
1w
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ENGINEER/SCIENTIST
Dahlgren, Virginia, United States
$144k-$197k/yr OnsiteFull Time
Naval Surface Warfare Center Dahlgren Division
Naval Surface Warfare Center Dahlgren Division: Develops and integrates advanced naval warfare and weapon systems.
1+ YOERequires specialized software engineering experience supporting radar systems, 1+ year at ND-04 (GS-12/13) equivalency, ability to manage software baselines and integrate with AEGIS/SSDS, and meet OPM series education standards.
AN/SPY-6, AEGIS, Ship Self-Defense System (SSDS)

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