124 fastapi developer jobs at 65 companies in Fredericksburg, VA

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
2w
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Software Developer
McLean, Virginia, United States
OnsiteFull Time
Easy Dynamics
Easy Dynamics: Provides cybersecurity and cloud solutions to federal agencies.
3+ YOE3+ years software development experience, Bachelor's in Engineering or related field required; strong Python backend (FastAPI, Pydantic, SQLAlchemy), React/TypeScript frontend, SQL experience, testing and CI/CD familiarity.
Python 3, FastAPI, Pydantic, SQLAlchemy, SQLite, PostgreSQL, Microsoft SQL Server, Alembic, React, TypeScript, Vite, Material UI, React Router, React Hook Form, Zod, pytest, Playwright, GitHub Actions, npm, uv, Docker, Bicep, PowerShell, Git, GitHub, Node.js, ESLint, Prettier, Ruff, Pyright
3d
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Software Engineer Level 4
Reston, Virginia, United States
OnsiteFull Time
Base-2 Solutions
Base-2 Solutions: Delivers engineering and technology services for national security.
Active TS/SCI with CI Polygraph; backend development, data engineering, API development; proficiency with Python, FastAPI, PostgreSQL, and Elasticsearch; experience with scalable, high-volume systems.
Python, FastAPI, PostgreSQL, Elasticsearch
1w
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Full-stack Developer
McLean, Virginia, United States
$160k-$190k/yr OnsiteFull Time
Bridge Core
Bridge Core: Provides technical services and cybersecurity solutions to government agencies.
8+ YOESenior-level full-stack development experience (8+ years), strong JavaScript/TypeScript and Python skills (Hono.js, fastapi), experience with Vue.js, Tailwindcss, CDKTF/terraform, relational databases/SQL, and cloud/DevOps.
JavaScript, Hono.js, Python, fastapi, TypeScript, Vue.js, Tailwindcss, CDKTF, terraform, SQL, Docker, AWS, Git
2mo
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Full Stack Developer
Suitland, Maryland, United States
$104k-$159k/yr OnsiteFull Time
Accenture Federal Services
Accenture Federal ServicesNYSE: ACN: Provides technology and consulting services to U.S. federal agencies.
2+ YOE2+ years as a Full Stack Developer; backend Python (Flask/Django/FastAPI); frontend JS (React/Vue); databases SQL/PostgreSQL; cloud deployment AWS/Azure/GC; Git; TS/SCI clearance.
Python, Flask, Django, FastAPI, JavaScript, React, Vue.js, HTML, CSS, SQL, PostgreSQL, AWS, Azure, Google Cloud, Git, Jira, Confluence
1mo
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Full Stack Developer
Washington, District of Columbia, United States
OnsiteFull Time
Softtek
Softtek: Softtek provides global IT services and digital business solutions.
US citizenship required; proficiency in Python, FastAPI, ReactJS, PostgreSQL, Docker, and AWS; experience with automated testing, trunk-based development, CI/CD concepts, and accessibility standards; eligible for Public Trust Tier 2.
Python, FastAPI, ReactJS, PostgreSQL, Docker, AWS, ECS, EKS, EC2, S3, RDS, CloudWatch, IAM, VPC, pytest, Jest, React Testing Library, OpenAPI/Swagger, Terraform, GitHub Actions
3w
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Full Stack Developer
McLean or Tysons Corner
OnsiteFull Time
Guidehouse
Guidehouse: Provides management and technology consulting services to diverse organizations.
4+ YOEUS citizen or green card holder, able to obtain Public Trust; Bachelor's degree or 4 additional years experience; 4+ years full-stack development; 3+ years AWS cloud development; proficiency in Python and JavaScript; experience with Django/Flask/FastAPI and Vue.JS/React/Angular; Agile experience.
Python, JavaScript, Django, Vue.JS, Flask, FastAPI, Falcon, SQLAlchemy, React, Svelte, Angular, AWS, EKS/Kubernetes, Docker, AWS Step Functions, Event Bridge, AWS Lambda, AWS API Gateway, Elasticsearch, Redis, Memcached, Amazon Relational Database Service (RDS) for Postgres, MongoDB, AWS Serverless Application Model (SAM)
3w
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Full Stack Software Developer
Washington, District of Columbia, United States
HybridFull Time
Essnova Solutions
Essnova Solutions: Provides professional and technical services to government entities.
5+ YOEBachelor's (or equivalent) and 5+ years full stack development with ReactJS, Python, FastAPI, PostgreSQL, REST APIs, AWS, Docker; CI/CD familiarity and ability to obtain Public Trust clearance.
ReactJS, Python, FastAPI, PostgreSQL, REST APIs, AWS, Docker, Kubernetes, GitHub Actions, CI/CD
2w
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AI Developer
Arlington, Virginia, United States
$78k-$176k/yr OnsiteFull Time
Booz Allen Hamilton
Booz Allen HamiltonNYSE: BAH: Provides technology and management consulting services to diverse organizations.
2+ YOE2+ years building production-grade software (Python, TypeScript, or Java); experience with FastAPI/Flask/REST/GraphQL/SQL, LLMs/RAG/agentic workflows, AWS cloud data foundations, CI/CD and containerization; Secret clearance and bachelor’s degree required.
Python, TypeScript, Java, FastAPI, Flask, REST, GraphQL, SQL, AWS, Kafka, NATS, RabbitMQ
2w
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AI Developer
Arlington, Virginia, United States
$78k-$176k/yr HybridFull Time
Booz Allen Hamilton
Booz Allen HamiltonNYSE: BAH: Consulting and technology services for government and commercial clients
2+ YOE2+ years building production-grade software in Python, TypeScript, or Java; experience with APIs (FastAPI, Flask, REST, GraphQL), SQL, AI-enabled apps (LLMs, RAG), cloud (AWS), MLOps/CI/CD, and a Secret clearance; Bachelor's in CS/SE/Data Science.
Python, TypeScript, Java, FastAPI, Flask, REST, GraphQL, SQL, AWS, Kafka, NATS, RabbitMQ, CI/CD, LLMs, RAG, MLOps, RMF, STIG
21h
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Full Stack Developer
Florida or Herndon or Texas or Virtual
RemoteFull Time
Constellis
Constellis: Provides private security, tactical training, and risk management services.
Experience building full-stack systems with Python/FastAPI, JavaScript/TypeScript and React, REST APIs, PostgreSQL, Docker, Git; bachelor\u0002s degree in a technical field required.
FastAPI, Kafka, PostgreSQL, Docker, React, TypeScript, WebSockets, Mapbox, REST APIs, MongoDB, OpenSearch/Elastic, js, Tailwind CSS, shadcn/ui, OAuth, JWT, Keycloak, Auth0, Git, GitHub, Jira, Confluence, GitHub Actions, ArgoCD, Kubernetes
3d
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Full Stack Developer
Washington or Ashburn or Manassas
HybridFull Time
All Native Group
All Native Group: Provides professional, technical, and government contracting services.
5+ YOE5+ years full-stack experience with Python, FastAPI, ReactJS, PostgreSQL, Docker and AWS; CI/CD and TDD practices; public trust clearance eligibility; bachelor's in CS or equivalent.
Python, FastAPI, ReactJS, PostgreSQL, Docker, AWS, ECS, EKS, OpenAPI/Swagger, pytest, Jest, React Testing Library
1w
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Generative AI Engineer (Clearance Required)
Arlington, Virginia, United States
HybridFull Time
InterImage
InterImage: Provides IT modernization and cybersecurity services to federal government agencies.
5+ YOEActive Top Secret clearance, 5+ years software development, 2+ years Generative AI/ML, strong Python, experience with LLMs, Azure, containerization, FastAPI/Flask, Git and CI/CD, and distributed systems.
Python, GPT, Llama, Claude, Mistral, FastAPI, Flask, Microsoft Azure, Microsoft Azure OpenAI Service, Azure Kubernetes Service (AKS), Azure Functions, Azure Storage, Microsoft Azure AI Search, Azure Machine Learning, Azure AI Foundry, Azure Cognitive Services, Docker, Kubernetes, Git, CI/CD, DevSecOps, LangChain, LangGraph, Semantic Kernel, LlamaIndex, Pinecone, Milvus, pgvector, Chroma, Model Context Protocol (MCP), Terraform, Bicep
1w
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Full Stack Developer
Chantilly, Virginia, United States
OnsiteFull Time
NS2 Mission
NS2 Mission: Delivers secure data management and analytics for national security.
5+ YOE5+ years Python experience, familiarity with Flask/Django/FastAPI, SQL/ORM, JavaScript/TypeScript front-end frameworks, unit/integration testing, containerized AWS deployments, and security clearance eligibility.
Python, Flask, Django, FastAPI, SQL, SQLAlchemy, JavaScript, TypeScript, CSS, React, Angular, Vue, Docker, Kubernetes, AWS, RESTful APIs
2w
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Senior AI Developer
Dahlgren, Virginia, United States
$106k-$185k/yr HybridFull Time
Arcfield
Arcfield: Systems engineering and mission support for defense and space.
3+ YOERequires active Secret clearance and ability to obtain TS/SCI, DoDD 8140.01 IAM Level I, strong Python experience (FastAPI a plus), experience with AI frameworks (Haystack, LangChain, LlamaIndex), RAG workflows, context engineering, MCP servers, and model evaluation.
Python, FastAPI, Haystack, LangChain, LlamaIndex, Model Context Protocol (MCP), RAG
1w
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Full Stack Developer
Chantilly, Virginia, United States
$150k-$200k/yr OnsiteFull Time
GRVTY
GRVTY: Develops defense technology, cyber, and intelligence software solutions.
5+ YOEActive TS/SCI+Poly required. 5+ years Python (Flask/Django/FastAPI), 2+ years SQL (SQLAlchemy), 1+ years JavaScript/TypeScript/CSS, React/Angular/Vue, AWS, container deployment; strong communication and critical thinking.
Python, Flask, Django, FastAPI, SQL, SQLAlchemy, JavaScript, TypeScript, CSS, React, Angular, Vue, AWS
2w
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Full Stack Developer
Chantilly, Virginia, United States
OnsiteFull Time
Bespoke Technologies
Bespoke Technologies: Provides technical engineering and data solutions for national security.
5+ YOEActive polygraph clearance required. 5+ years Python (Flask/Django/FastAPI), 2–3 years SQL/SQLAlchemy, 0.5–3 years JavaScript/TypeScript/CSS and React/Angular/Vue, 1–3 years AWS and container deployment experience.
Python, Flask, Django, FastAPI, SQL, SQLAlchemy, JavaScript, TypeScript, CSS, React, Angular, Vue, AWS
1mo
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Software Engineer
London or Washington or United States or United Kingdom or Europe or Asia
OnsiteFull Time
Metrea
Metrea: Provider of effects-as-a-service to global national security partners.
6+ YOE6 years backend engineering experience with Python and web/REST APIs; BSc in Software Engineering or CS; experience with Django/FastAPI, Azure, Kafka, Docker, Kubernetes, Elasticsearch; Agile delivery and leadership skills; BPSS check and UK right-to-work required.
Python, Django, FastAPI, REST, Azure, Kafka, Docker, Kubernetes, Elasticsearch
1mo
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26-1106: Full Stack Python Developer - Herndon, VA
Herndon, Virginia, United States
OnsiteFull Time
Navitas Business Consulting
Navitas Business Consulting: Provides digital transformation and IT solutions for government agencies.
5+ YOE5+ years software engineering with Python and web app development; experience with Flask/FastAPI, cloud-native delivery (Docker/Kubernetes), CI/CD, Databricks/Spark, search/graph platforms, and modern front-end frameworks.
Python, Flask, FastAPI, Databricks, Spark, Elasticsearch, Neo4j, Docker, Kubernetes, Git, React, Angular, Vue, CI/CD, LLMs, RAG
3w
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Senior Software Engineer
Somerville or Washington
$160k-$190k/yr HybridFull Time
VIA
VIA: Building secure, resilient digital infrastructure and AI solutions.
5+ YOEBachelor's in CS/Math/Engineering/Science, 5+ years full-stack/backend experience, cloud microservices, cryptography, Istio, FastAPI, Docker, Helm, SQL/NoSQL, CI/CD, automated testing, strong communication.
Istio, FastAPI, Docker, Helm, OAuth2, IETF RFCs, SQL, NoSQL