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588 senior software engineer python jobs at 168 companies in Culpeper, VA

PromotedHiringCafe
Founding Backend / Infra Engineer
Cupertino, CA, US
$160k-$300k/yr On-SiteFull Time
HiringCafe
HiringCafe: Building a 100× better job search engine to take on Indeed and LinkedIn.
Own the crawlers, pipelines, and infrastructure powering a real-time job search engine. Strong Node.js and Python fundamentals; bonus points for security and reverse-engineering chops.
Node.js, Python, Elasticsearch, Redis
Help us #BeatIndeed & #BeatLinkedIn
PromotedHiringCafe
Founding Full-stack / Product Engineer
Cupertino, CA, US
$130k-$300k/yr On-SiteFull Time
HiringCafe
HiringCafe: Building a 100× better job search engine to take on Indeed and LinkedIn.
Help us build a 100× better job search engine. We need a full-stack engineer with great taste, sharp fundamentals, and a track record of shipping polished product on React/Next.js plus a real backend (Firebase, Elasticsearch, Redis, Stripe).
React, Next.js, TypeScript, Firebase, Elasticsearch, Redis, Stripe
Help us #BeatIndeed & #BeatLinkedIn
1mo
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Lead Python Programming Software Engineer – Level 4
Fairfax, Virginia, United States
$142k-$213k/yr OnsiteFull Time
Northrop Grumman
Northrop GrummanNYSE: NOC: Develops and manufactures advanced aerospace, defense, and space systems.
8+ YOEActive TS/SCI clearance and U.S. citizenship; Bachelor's +8 years (or Master’s +6 or PhD +4) software development experience; 3+ years senior-level Python; software architecture and version control (GitLab) experience.
Python, GitLab
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1mo
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Lead Python Programming Software Engineer – Level 4
Fairfax, Virginia, United States
$142k-$213k/yr OnsiteFull Time
Northrop Grumman
Northrop GrummanNYSE: NOC: Designs and manufactures advanced aerospace and defense systems.
8+ YOEActive TS/SCI clearance and U.S. citizenship required; 8+ years software development with Bachelor's (alternatively Master's/PhD with fewer years); 3+ years senior Python experience; software architecture, GitLab/version control, and team leadership experience.
Python, GitLab
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1mo
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Senior Python Developer
Herndon, Virginia, United States
OnsiteFull Time
ManTech
ManTech: Provides technology solutions for defense and intelligence agencies.
10+ YOE10+ years Python development, SQL, front-end/full stack, Git, Docker/Kubernetes, RESTful API development, Linux/Unix; Bachelor's in CS +10 years or HS +14 years; active TS/SCI with polygraph required.
Python, SQL, Git, Docker, Kubernetes, RESTful API, Linux/Unix, Node.js, Jenkins, GitLab CI, AWS, Azure, JIRA
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3mo
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Senior Software Engineer
Herndon, Virginia, United States
OnsiteFull Time
Expedition Technology
Expedition Technology: Delivering advanced machine learning and signal processing for defense.
8+ YOE8+ years software engineering; Python expert; TS/SCI with CI poly; Bachelor's in CS/EE or equivalent; cloud; DevSecOps; Linux; AI/ML interest.
Python, Docker, Kubernetes, Linux, Cloud, CI/CD workflow
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1w
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Senior Python Developer with Spark
Reston, Virginia, United States
$97k-$157k/yr HybridFull Time
CGI
CGINYSE: GIB: Provides information technology and business consulting services.
8+ YOE8+ years Python data engineering with Apache Spark, advanced SQL, AWS (EMR, Redshift, S3, Glue), big data tooling, CI/CD (GitLab, Terraform), and strong performance optimization skills.
Python, Apache Spark, Hadoop, Hive, EMR, SQL, AWS, Redshift, S3, Glue, Lambda, Step Functions, EventBridge, GitLab, Terraform
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1mo
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Senior Software Engineer
Quantico, Virginia, United States
OnsiteFull Time
Redhorse
Redhorse: Delivering data insights and technology solutions to government agencies.
6+ YOEActive TS/SCI clearance; BS in CS/CE/SE/EE/Info Security; 6+ years software/ops; 4+ years in CNO; 2+ years automation (Python/Bash/PowerShell/Ansible); Linux admin; Git/Jira/GitLab; Docker/Podman; leadership; able to work independently.
Python, Bash, PowerShell, Ansible, Linux (Ubuntu, Rocky Linux), Git, Jira, GitLab, Docker, Podman, Docker Compose
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3w
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Software Engineer (Full Stack & Python)
Chantilly, Virginia, United States
$94k-$198k/yr OnsiteFull Time
CACI
CACINYSE: CACI: Provides information technology and professional services to government clients.
6+ YOETS/SCI with polygraph, Bachelor's in CS or related, 6+ years software development, 4+ years full‑stack, 3+ years Python web, REST APIs, JS front-end frameworks, git, unit/integration testing, CI/CD experience.
Python, JavaScript, Angular, Vue, React, git, Jenkins, GitLab Runners, AWS, REST
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2mo
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Python Developer (Mid-Senior)
Chantilly, Virginia, United States
OnsiteFull Time
JTEC Consulting
JTEC Consulting: Provides IT services to federal clients.
10+ YOE10+ years Python development; FastAPI; AWS; TS/SCI with polygraph; U.S. citizenship; Bachelor's degree or equivalent experience; on-site in Chantilly, VA.
Python, FastAPI, SQLAlchemy, AWS, Kubernetes, Jenkins, GitHub, OpenSearch, Elastic, Airflow, PySpark, Trino, Linux, Docker, Helm, Makefiles, Java, Perl, C, C++, HTML, JavaScript, JSON
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3w
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Software Engineer (Full Stack & Python)
Chantilly, Virginia, United States
$94k-$198k/yr OnsiteFull Time
CACI International
CACI InternationalNYSE: CACI: Provides information technology and engineering services for government agencies.
6+ YOETS/SCI with polygraph; Bachelor's in Computer Science; 6+ years software development; 4+ years full‑stack; 3+ years Python, REST APIs, JavaScript front-end frameworks; git, unit/integration testing, CI/CD experience.
Python, JavaScript, Angular, Vue, React, git, Jenkins, GitLab Runners, CI/CD, REST APIs, AWS, Agile
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2mo
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Senior Software Engineer, Intelligence Systems
Reston, Virginia, United States
$191k-$253k/yr OnsiteFull Time
Anduril Industries
Anduril Industries: Defense technology building autonomous military hardware and software.
Proficient in Python; strong software testing, networking knowledge, Wireshark; active secret security clearance.
Python, Wireshark, Networking, Test Automation, Firmware Utilities
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2mo
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Senior Software Engineer
Herndon or Herndon or North America
OnsiteFull Time
Bridge Core
Bridge Core: Provides technical services and cybersecurity solutions to government agencies.
11+ YOEBachelor’s or Master’s preferred; 11+ years relevant experience; Python with 2+ years network automation; CI/CD/DevOps; Ansible/NSO; NetBox; PyATS/Jenkins; Yang; Cisco IOS/XR/NX-OS; AWS; Docker.
Python, Ansible, NSO, NetBox, PyATS, Jenkins, Yang, Cisco IOS, Cisco IOS XR, NX-OS, Junos, AWS, Docker, Podman
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3mo
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Senior Software Engineer (Auth & Identity)
Vienna or Remote
$100k-$155k/yr HybridFull Time
Clear Fracture
Clear Fracture: Automating data orchestration with an agentic AI engineering platform.
4+ YOEBackend-focused senior engineer for authorization and identity systems; 4+ years in auth, RBAC/ABAC, OAuth/OIDC/SAML; multi-tenant, distributed systems; cloud experience.
Python, Go, Java, OAuth 2.0, OIDC, SAML, AWS, Azure, GCP
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1mo
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Software Engineer 3 - Golang or Python/Kubernetes - Freewheel
Reston, Virginia, United States
OnsiteFull Time
Comcast
ComcastNASDAQ: CMCSA: Provides global telecommunications, media content, and entertainment services.
5+ YOE5+ years software/platform engineering experience; proficiency in Go or Python, Kubernetes, public cloud (AWS/OCI), CI/CD (Jenkins/Argo CD), Terraform/GitOps, strong troubleshooting and communication skills; Bachelor’s in CS preferred.
Golang, Go, Python, Kubernetes, AWS, OCI, Jenkins, Argo CD, CI/CD, Terraform, GitOps, EKS, OKE, Prometheus, Grafana, OpenTelemetry
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4d
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Software Developer, Senior
Herndon, Virginia, United States
$87k-$198k/yr OnsiteFull Time
Booz Allen Hamilton
Booz Allen HamiltonNYSE: BAH: Provides technology and management consulting services to diverse organizations.
6+ YOE6+ years software development experience, legacy enterprise and microservices experience, Agile, Python and Git familiarity, TS/SCI clearance with polygraph required.
Python, Java, JavaScript, React, Angular, NodeJS, AWS, Azure, Google Cloud Platform, Git
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2w
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Senior Software Engineer
El Segundo or Chantilly
$172k-$232k/yr OnsiteFull Time
Boeing
BoeingNYSE: BA: Designing and manufacturing commercial aircraft and defense systems.
5+ YOETop Secret/TS-SCI clearance with polygraph, Bachelor’s degree, 5+ years software development experience, strong Python and front-end (Angular/TypeScript/JavaScript) skills, experience with AWS and infrastructure tooling.
AWS, Python, Angular, Typescript, JavaScript, Docker, Kubernetes, CI/CD Pipelines
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2w
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Software Engineer, Senior
Herndon, Virginia, United States
$165k-$220k/yr OnsiteFull Time
GRVTY
GRVTY: Develops defense technology, cyber, and intelligence software solutions.
9+ YOEActive Top Secret clearance, 9+ years software development (7+ with MS), expert Python, experience with scientific/sensor data processing, ML workflows, Git-based source control, and strong communication skills.
Python, Windows, Linux, Git, GitLab, Bitbucket, Jira, Jenkins, PyTorch, TensorFlow, scikit-learn, NumPy, pandas, OpenCV, SciPy, C, C++, MATLAB, Java, Rust
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1mo
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Senior Software Engineer/Developer - AI
Fairfax or United States
$166k-$210k/yr RemoteFull Time
Pyramid Systems
Pyramid Systems: Provides software engineering and digital transformation for federal agencies.
12+ YOEUS citizenship required; Bachelor's or Master's in CS/Engineering; 12–15+ years software engineering (leadership experience); 8+ years applied AI/ML; expert Python; experience with LLMs, cloud (AWS/Azure/GCP), ML frameworks, distributed training, and federal compliance.
Python, PyTorch, TensorFlow, JAX, DeepSpeed, FSDP, Horovod, Kubernetes, AWS Bedrock, Azure OpenAI Service, Google Vertex AI, GPT, Claude, Gemini, LangChain, LlamaIndex, Semantic Kernel, REST, SOAP, SQL, NoSQL, CI/CD
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2w
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Senior Software Engineer
El Segundo or Chantilly
$172k-$232k/yr OnsiteFull Time
Boeing
BoeingNYSE: BA: Designs and manufactures aircraft, defense systems, and space technology.
5+ YOEActive TS/SCI with polygraph required, Bachelor's degree,5+ years software development experience, proficiency with Python, front-end (Angular, Typescript, JavaScript), AWS, Docker/Kubernetes, CI/CD; strong architecture and leadership skills.
AWS, Python, Angular, Typescript, JavaScript, Docker, Kubernetes, CI/CD Pipelines
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3mo
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Senior Software Engineer (Big Data)
Herndon, Virginia, United States
OnsiteFull Time
KDA Consulting
KDA Consulting: Provides IT engineering and cloud services for intelligence missions.
TS/SCI clearance with polygraph preferred; BS in CS/Engineering or related field; strong full stack development; big data tech (Hadoop, Spark, Kafka); Java/Python/C#; APIs and microservices; strong problem-solving; able to work independently (IC)
Java, Python, C#, Hadoop, Apache Spark, Kafka, APIs, Microservices, REST
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2w
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Software Developer, Senior
Herndon, Virginia, United States
$87k-$198k/yr OnsiteFull Time
Booz Allen Hamilton
Booz Allen HamiltonNYSE: BAH: Consulting and technology services for government and commercial clients
6+ YOE6+ years software development experience, 3+ years with legacy enterprise systems, proficiency with Git and Python, experience with microservices, APIs, cloud platforms; TS/SCI with polygraph required.
Git, Python, Java, JavaScript, React, Angular, NodeJS, AWS, Azure, Google Cloud Platform
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