6,395 python developer jobs at 1,066 companies in Fairfax, 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
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
3mo
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Python Developer (Cybersecurity)
Dahlgren, Virginia, United States
OnsiteFull Time
TMC Technologies
TMC Technologies: Provides engineering and IT services to government and defense clients.
Develop software and security tools using Python; ability to obtain Secret security clearance; Bachelor's in Computer Science or Cybersecurity; on-site at NSWC Dahlgren.
Python
3w
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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
3w
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Python Developer
Fort Meade, Maryland, United States
OnsiteFull Time
Set of X
Set of X: Provides specialized engineering services for U.S. national security missions.
7+ YOEBachelor's in Computer Science (or 4 yrs SWE experience) and 7 years SWE experience required; strong Python skills; NiFi or Elastic a plus; TS/SCI with polygraph required.
Python, NiFi, Elastic
1mo
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Senior Python Developer
Washington or Virginia or Maryland
$90k-$130k/yr OnsiteFull Time
Tripoint Solutions
Tripoint Solutions: Providing technology modernization and data services to federal agencies.
5+ YOEBachelor's in CS or related, 5+ years Python development, experience with Django/Flask, REST APIs, PostgreSQL, Git, Unix/Linux, AWS/Cloud platforms, Jupyter Notebooks; U.S. citizenship and eligibility for Federal Public Trust required.
Python, Django, Flask, Jupyter Notebook, Git, PostgreSQL, Unix/Linux, HTML, JavaScript, Docker, Kubernetes, AWS, Cloud Foundry, Heroku, ServiceNow, UiPath
1mo
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Senior Python Engineer
Quantico, Virginia, United States
OnsiteFull Time
SAIC
SAICNYSE: SAIC: Provides engineering, IT, and mission support services to government.
9+ YOEU.S. citizen with active Top-Secret clearance, Bachelor's (or equivalent) and 9+ years' experience; 3–5 years Python development; IAT-II/Security+ CE; experience with Django/Flask, API development, Git, databases/ORMs, security best practices.
Python, Django, Flask, Git
1mo
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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
1mo
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Senior Python Engineer
Quantico, Virginia, United States
OnsiteFull Time
SAIC
SAICNASDAQ: SAIC: Provides government and defense clients with technology and engineering services.
9+ YOEBachelor's (or equivalent) and 9+ years experience, U.S. citizenship with active Top-Secret clearance, IAT-II (Security+ CE), 3–5 years Python development, Django/Flask, API integration, Git, database/ORM knowledge.
Python, Django, Flask, Git
1w
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Mighty Python Developer
Bethesda, Maryland, United States
OnsiteFull Time
Black Cape
Black Cape: Provides mission software, AI, and data analytics for defense.
1.5+ YOEActive Top Secret/SCI required (willingness for CI Poly),Bachelor's degree,1.5+ years professional experience,proficiency in Python,PostgreSQL,Docker,experience in classified environments and model operationalization.
Google TensorFlow, Python, PostgreSQL, Docker, MacOS, Windows, Linux, Elasticsearch, GitLab, Git LFS, GitLab CI, Pydantic, DeepEval, REST, GraphQL, RedHat, Alpine, Kubernetes, OpenShift, LoRA
2w
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Python Developer
Chantilly, Virginia, United States
$104k-$218k/yr OnsiteFull Time
CACI International
CACI InternationalNYSE: CACI: Provides information technology and engineering services for government agencies.
Active TS/SCI with Polygraph, DoD 8570 IAT Level II (e.g., Security+ CE), Bachelor's degree in CS/related field, proficiency in Python, Git, SQL (PostgreSQL/MySQL), AWS, microservices, and experience with development lifecycle.
Python, Git, PostgreSQL, MySQL, SQL, AWS, Docker, CI/CD, Agentic coding tools, Large Language Models (LLMs), Retrieval-Augmented Generation (RAG)
1mo
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Python Developer (Mid to Sr)
Bethesda, Maryland, United States
OnsiteFull Time
Futrend Technology
Futrend Technology: Provider of IT solutions and consulting for federal agencies.
5+ YOE5+ years in web development; expert Python; Django; REST APIs; frontend with USWDS/Bootstrap; AWS/Azure/GCP; Git; SQL; Agile.
Python, Django, REST APIs, Frontend (USWDS, Bootstrap, Foundation), Git, AWS, Azure, Google Cloud, JavaScript, jQuery, Oracle, PostgreSQL, SQL, CI/CD, Unix/Linux, React, Angular
2w
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Python Developer
Chantilly, Virginia, United States
$104k-$218k/yr OnsiteFull Time
CACI
CACINYSE: CACI: Provides information technology and professional services to government clients.
Active TS/SCI with Poly required; DoD 8570 IAT Level II (e.g., Security+ CE); Bachelor’s in CS/IT or related required; proficiency with Python, Git, SQL/PostgreSQL, AWS; experience with microservices, REST APIs, CI/CD, Docker, and AI-assisted development.
Python, Git, PostgreSQL, MySQL, SQL, AWS, Docker, CI/CD, Large Language Models (LLMs), Retrieval-Augmented Generation (RAG)
3mo
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Python / AWS Developer
Chantilly, Virginia, United States
$70k-$131k/yr OnsiteFull Time
Accenture Federal Services
Accenture Federal ServicesNYSE: ACN: Provides technology and consulting services to U.S. federal agencies.
Experience with Python, AWS, and Linux; active TS/SCI clearance with poly; onsite in Chantilly, VA.
Python, AWS, Linux, AWS CDK, DevOps, Web Scraping
1w
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Python/Django Developer
McLean, Virginia, United States
$80k-$120k/yr OnsiteFull Time
Tata Consultancy Services
Tata Consultancy ServicesNational Stock Exchange of India: TCS: Global provider of IT services, consulting, and business solutions.
10+ YOEMust be US-citizen/eligible for US security clearance; 10+ years software engineering with 5+ years Python; experience with Django and Nginx; AWS Gov cloud, FedRAMP/IL5 exposure advantageous.
Python, Django, Nginx, AWS Gov cloud, AWS
1mo
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Python Engineer, Agentic AI
Washington, District of Columbia, United States
$143k-$214k/yr HybridFull Time
Comcast
ComcastNASDAQ: CMCSA: Provides global telecommunications, media content, and entertainment services.
5+ YOEProficiency in Python; backend services; RESTful APIs; testing with pytest; Git with CI/CD; Agile; problem solving; growth mindset.
Python, asyncio, FastAPI, REST, Git, CI/CD, pytest, Docker, LLM, agent frameworks
1mo
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Python Web Application Developer
Tysons Corner or Falls Church
HybridFull Time
IntelliDyne
IntelliDyne: Provides IT solutions and consulting services to government agencies.
5+ YOE5+ years Python development, Flask experience, web app deployment and security, authentication and certificate management, REST APIs, relational DBs, Git, HTML/CSS/JavaScript, strong debugging and communication skills.
Python, Flask, Microsoft Entra ID, HTML, CSS, JavaScript, REST APIs, PostgreSQL, SQL Server, MySQL, Git, Azure, AWS, IIS, NGINX, Apache, Docker, Linux, Windows, CI/CD
3mo
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Senior‑Level Python Developer (Python, C++)
Annapolis Junction, Maryland, United States
$155k-$175k/yr OnsiteFull Time
IDS International
IDS International: Global training, logistics, and security for government agencies.
8+ YOEBachelor’s degree in computer science; 8+ years relevant experience; Python, C++, Spark; Jupyter Notebooks; JIRA, Confluence, Git/GitLab; knowledge of customer tools; active TS/SCI with Polygraph.
Python, C++, Spark, Jupyter Notebooks, JIRA, Confluence, Git/GitLab
1d
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SQL and Python Developer
Washington, District of Columbia, United States
$90k-$125k/yr OnsiteFull Time
IntelliDyne
IntelliDyne: Provides IT consulting and technology solutions to government agencies.
5+ YOE5+ years SQL, PL/SQL and Python experience; Oracle and Cognos experience; OLAP and ETL familiarity; strong analytical, QA and collaborative skills; bachelor’s degree required; MBI security clearance required.
SQL, PL/SQL, Python, Cognos, Oracle, Microsoft Excel, Crystal Reports, Business Objects Enterprise XI, OLAP, ETL
3w
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Full Stack Python Developer
Ashburn or United States
RemoteFull Time
Niyam IT
Niyam IT: IT services and data analytics for government agencies.
7+ YOEUS citizen able to obtain Public Trust, Bachelor’s in CS or related, 7+ years experience, containerized Linux experience, proficiency with Python, PostgreSQL, Java/Spring Boot, Angular/TypeScript, microservices, and AWS.
Python, PostgreSQL, Java, Spring Boot, Angular, TypeScript, Angular Material, AWS, Linux, microservices, RESTful services, HTML, CSS, JavaScript, Git, SQL, MySQL, PostgreSQL Server, ETL, Kafka, NGRX, NGXS, UML, CI/CD
2mo
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Python Software Engineer (GC-2)
Annapolis Junction, Maryland, United States
$160k-$180k/yr OnsiteFull Time
Legato
Legato: Delivers IT engineering and cybersecurity services to defense agencies.
4+ YOEPython, AWS, Docker, Terraform; IAT Level 2; 4+ years IT applications experience; Bachelor's degree or 8 years equivalent.
Python, AWS, Docker, Terraform, Bash, SQL
3w
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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