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237 computer systems software developer jobs at 105 companies in Leesburg, VA

1w
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Expert Software Systems Developer
Herndon or Virginia or United States
$180k-$210k/yr OnsiteFull Time
Markon Solutions
Markon Solutions: Government consulting firm specializing in management and technical services.
9+ YOEActive TS/SCI with full-scope polygraph, bachelor's in computer science or related field, and 9+ years in software development, backend integration, and systems development; additional experience may substitute for degree.
Windows PowerShell, Puppet, C2S, SQL, Ruby, Java, C++, .NET, VPN, IPSEC, SSL, PKI, LDAP
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2w
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Senior Systems/Software Engineer
Arlington, Virginia, United States
$104k-$166k/yr OnsiteFull Time
Peraton
Peraton: Provider of mission-critical national security technologies and services.
3+ YOERequires a qualifying engineering, computer science, physics, or related degree; 3–8 years of experience based on degree; C/C++, object-oriented development, software engineering, US citizenship, and ability to obtain Public Trust clearance.
C, C++, UNIX, IBM Rational Suite, RTCA DO-178B, RTCA DO-278, RTCA DO-254, DOORS, ClearCase, ClearQuest
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2w
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Senior Software Engineer/Systems Engineer
Annapolis Junction, Maryland, United States
OnsiteFull Time
Bespoke Technologies, Inc.
Bespoke Technologies, Inc.: Woman-owned U.S. technology consultancy delivering digital transformation, engineering, mission operations, and IT solutions to national-security customers.
12+ YOE12+ years of experience, bachelor's degree in computer science or equivalent, TS/SCI with polygraph clearance, and expertise in Java or C/C++, cryptography, REST APIs, cloud, Docker, Kubernetes, and Agile.
Java, Linux, Microsoft Windows, C, C++, Python, Go, Rust, Docker, Kubernetes, REST APIs, Agile, OpenBao
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3mo
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Computer Systems Engineer/Architect
Washington, District of Columbia, United States
$140k-$150k/yr RemoteFull Time
West 4th Strategy
West 4th Strategy: Federal IT services and professional-services firm providing technology and mission-support teams to government agencies and prime contractors.
Experienced in software QA, test automation, data engineering, SQL, Python, AWS, Linux, GitHub, structured data formats, and technical documentation; U.S. citizenship and ability to obtain Public Trust clearance required.
SQL, Python, AWS, Linux, GitHub, Oracle, PostgreSQL, Iceberg, XML, JSON, CSV, CLI, ETL, ELT
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Senior Computer Vision Engineer
Washington, District of Columbia, United States
$191k-$292k/yr OnsiteFull Time
Anduril Industries
Anduril Industries: Defense technology developing AI-powered autonomous military systems.
5+ YOEBS, MS, or PhD in a related technical field; 5+ years developing production or research computer vision or ML systems; Python, deep learning, object detection/tracking, and edge deployment experience; eligible for U.S. Secret clearance.
Python, Lattice OS
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2mo
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Software Systems Engineer
Chantilly, Virginia, United States
OnsiteFull Time
Systems Planning and Analysis
Systems Planning and Analysis: Technical and analytical solutions for national security.
9+ YOEUS citizen with TS/SCI+poly, bachelor’s degree in a related engineering/computer science field, 9+ years supporting software/systems engineering including requirements, design, integration, test; knowledge of Agile, DevSecOps, and waterfall; space/aerospace experience; able to report onsite in Chantilly, VA.
Agile, DevSecOps
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1w
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Senior Software Developer
McLean or Tysons
OnsiteFull Time
M1 Technology
M1 Technology: Private technology consulting firm delivering software solutions to federal and commercial clients.
10+ YOEBachelor's degree in computer science, information systems, or computer engineering and 10 years of software development experience with AWS, Linux, Java, PHP, web technologies, IAM, security, testing, and debugging.
Linux, Amazon Web Services (AWS), Amazon S3, Amazon EC2, Apache Webserver, Apache Tomcat, Java, PHP, HTML, CSS, MySQL, JavaScript, OAuth, RBAC, VS Code, Bash, Microsoft SharePoint, Maven, Gradle, AWS Secrets Manager
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2mo
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Software Engineer, Classification Systems (JavaScript)
Hanover, Maryland, United States
$79k-$163k/yr OnsiteFull Time
CACI
CACINYSE: CACI: Provider of specialized IT and mission-critical government services.
3+ YOETS/SCI with polygraph required; Bachelor's in Computer Science/Engineering or equivalent experience; 3+ years software engineering; strong JavaScript/DOM, TypeScript, Node.js/npm; AWS, Docker, Git, GitLab CI/pipelines, Jest, Cypress experience.
JavaScript, DOM, TypeScript, Node.js, npm, AWS, Docker, Git, GitLab CI, GitLab pipelines, Jest, Cypress, Microsoft Office JavaScript API
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2w
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Senior Systems/Software Engineer
Arlington, Virginia, United States
$104k-$166k/yr OnsiteFull Time
Peraton
Peraton: Provider of mission-critical national security technologies and services.
8+ YOERequires a relevant engineering or computer science degree, 3–8 years of experience depending on degree, C/C++ and UNIX development, software assurance and testing expertise, US citizenship, and ability to obtain Public Trust clearance.
C, C++, UNIX, IBM Rational Suite, RTCA DO-178B/278/254, DOORS, ClearCase/ClearQuest
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1mo
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Frontend Software Engineer — Secure Mission Systems
United States or Laurel
RemoteFull Time
Rackner
Rackner: Cloud-native engineering consultancy serving U.S. government and enterprise clients with DevSecOps, AI, cybersecurity, and software.
4+ YOE4+ years software development experience, proficiency with React and TypeScript, API integration, unit/integration testing, secure SDLC practices, Git, and a bachelor\u0002s in computer science or related field.
React, TypeScript, Cesium, CesiumJS, OpenShift, Kubernetes, GitLab, FastAPI, Flask, Python, Git
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4mo
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Computer Scientist
Aberdeen or Fort Belvoir or Huntsville or Austin or Tobyhanna Army Depot or Letterkenny Army Depot or Lakehurst
OnsiteFull Time
Envision Innovative Solutions
Envision Innovative Solutions: Private technology services providing IT, cybersecurity, program management, and mission support to government and commercial clients.
5+ YOE5+ years in software development; design, develop, troubleshoot hardware/software systems; analyze processes; create design docs and testing procedures.
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3w
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Software Engineer Level I or II, Mission Systems Division
Blacksburg or Washington
$70k/yr OnsiteFull Time
Virginia Tech
Virginia Tech: Public land-grant research university serving the commonwealth.
Bachelor's or master's degree in computer science, engineering, or related field; software development proficiency, hardware-software integration experience, teamwork ability, U.S. citizenship, and ability to obtain and maintain security clearance.
CUDA, TensorFlow, PyTorch, Keras
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2w
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Software Engineer
Hanover, Maryland, United States
OnsiteFull Time
Systek
Systek: C4ISR contractor providing systems engineering, acquisition, testing, training, and IT services to defense and civilian agencies.
6+ YOEBachelor's degree preferred in computer science, information systems, software engineering, or programming. Requires 6 years of DoD software engineering experience and active Top Secret/SCI clearance; polygraph may be required.
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2mo
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Software Engineer, Product Experiences
San Francisco or Washington, D.C.
$160k-$220k/yr OnsiteFull Time
Peregrine Technologies
Peregrine Technologies: The leading data integration platform helping public safety agencies make better decisions in the moments that matter.
2+ YOEComputer Science degree or equivalent experience, 2+ years in cross-functional software development, production user-facing software experience, React and TypeScript expertise, and distributed systems knowledge.
React, Redux, TypeScript, Mapbox, Python, Django, Celery, Airflow, Kafka, PostgreSQL, Elasticsearch, Bedrock, Sagemaker, AWS, Pulumi, Terraform, Kubernetes
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3w
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C++ Software Engineer
Cambridge or Arlington or Seattle
$90k-$210k/yr OnsiteFull Time
MORSE Corp
MORSE Corp: Employee-owned defense technology consultancy delivering algorithm, software, and systems-engineering services to U.S. national-security customers.
5+ YOERequires 5+ years of software development experience, C++ expertise, Python proficiency, hardware and embedded systems knowledge, Docker/Docker-compose/Kubernetes experience, and a Computer Science degree or equivalent experience.
C++, Python, Docker, Docker Compose, Kubernetes, Scrum, Kanban
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3d
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Software Engineer - Platform, Mission Systems
Canada or United States or San Francisco or Washington, D.C. or Germany or Austria or Slovenia or Netherlands
$104k-$130k/yr RemoteFull Time
Planet Labs Geomatics Corp.
Planet Labs Geomatics Corp.New York Stock Exchange: PL: Public benefit providing daily satellite imagery, geospatial data, and analytics to businesses and government agencies.
4+ YOEBachelor’s degree in computer science, aerospace engineering, or similar; 4+ years’ experience; Python, cloud infrastructure, Ansible, relational databases, Linux, CI/CD, testing, and cross-functional collaboration skills.
AWS, GCP, Ansible, Kubernetes, Terraform, Python, Postgres, MySQL, GitLab CI, Docker, Linux, Datadog, Sentry, Metaview, Large Language Models (LLMs)
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3mo
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Staff Software Engineer
North Bethesda or Waltham
$170k-$195k/yr HybridFull Time
Xometry
XometryNASDAQ: XMTR: Digital marketplace for on-demand custom manufacturing.
12+ YOE12+ years software development; Python; AWS; React/NextJS; system architecture; cross-team leadership; Bachelor’s in Computer Science or related field.
Python, AWS, React, NextJS
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4d
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Software Development Engineer, S3
Arlington, Virginia, United States
$144k-$194k/yr OnsiteFull Time
Amazon
AmazonNASDAQ: AMZN: Multinational technology focused on e-commerce and cloud computing.
3+ YOERequires 3+ years of professional software development, 2+ years designing or architecting reliable scalable systems, and programming experience. Bachelor's in computer science is preferred.
S3, machine learning
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4d
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Jr. Software Engineer
Centennial or Colorado Springs or Tucson or Chantilly
$98k-$123k/yr OnsiteFull Time
Rincon Research Corporation
Rincon Research Corporation: Employee-owned defense providing digital signal processing products and services to U.S. defense and intelligence communities.
Bachelor's, Master's, or PhD in Computer Engineering or Computer Science; C++ and Python in Linux; software system design; U.S. citizenship; ability to obtain and maintain TS/SCI clearance.
C++, Python, Linux, Docker, Kubernetes, PIP, React, Git, REST API, CUDA, Shell Scripting, CI/CD, DevOps, Cloud computing, AI/ML, LLM
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2w
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Lead Software Engineer
McLean, Virginia, United States
$197k-$225k/yr OnsiteFull Time
Capital One
Capital OneNYSE: COF: A technology-driven bank providing diverse financial services.
4+ YOE1+ MgmtBachelor's degree, 4+ years of software engineering, 1+ year of cloud computing, and experience with programming languages, cloud platforms, distributed systems, and Agile practices.
JavaScript, Java, HTML/CSS, TypeScript, SQL, Python, Go, Docker, Kubernetes, AWS, Microsoft Azure, Google Cloud, RDBMS, NoSQL, Agile
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