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136 fastapi developer jobs at 70 companies in Virginia

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Software Developer
McLean, Virginia, United States
OnsiteFull Time
Easy Dynamics Corporation
Easy Dynamics Corporation: Woman-owned IT services delivering cybersecurity, cloud, identity, and risk-management solutions to U.S. 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
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2mo
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Full Stack Developer
McLean, Virginia, United States
HybridFull Time
TechnoMile
TechnoMile: N AI-enabled cloud-software provider helping government contractors manage growth, contracts, compliance, and security.
Bachelor's preferred; proficiency with Python, FastAPI/Django, React, PostgreSQL/MySQL, Docker, CI/CD, cloud platforms; strong debugging, communication, and AI-assisted development skills.
Python, FastAPI, Django, React, JavaScript, TypeScript, PostgreSQL, MySQL, Docker, GitHub Actions, Jenkins, Git, Claude, Cursor, ChatGPT, GitHub Copilot, AWS, Azure, Google Cloud Platform, Redis, Kafka, Elasticsearch, Kubernetes
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16h
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Software Engineer Level 4
Reston, Virginia, United States
OnsiteFull Time
Base-2 Solutions
Base-2 Solutions: Federal technology provider supporting national security and intelligence missions.
5+ YOEActive TS/SCI with CI polygraph, backend development, data engineering, API development, Python, FastAPI, PostgreSQL, Elasticsearch, and 5–13 years of experience depending on education.
Python, FastAPI, PostgreSQL, Elasticsearch, SQL
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1mo
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Full Stack Developer
Washington or Ashburn or Manassas
HybridFull Time
All Native Group
All Native Group: Tribal-owned federal contractor providing health, IT, logistics, training, and professional services to U.S. government agencies.
5+ YOE5+ years full-stack experience with Python, FastAPI, ReactJS, PostgreSQL, Docker, and AWS; CI/CD and trunk-based development; public trust clearance required; bachelor's degree or equivalent preferred.
Python, FastAPI, ReactJS, PostgreSQL, Docker, AWS, ECS, EKS, pytest, Jest, React Testing Library, OpenAPI/Swagger, CI/CD
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1mo
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Full-stack Developer
McLean, Virginia, United States
$160k-$190k/yr OnsiteFull Time
Bcore
Bcore: Private national-security technology contractor delivering AI, analytics, software, cloud, and mission services to defense and intelligence 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
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2mo
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Full Stack Developer
McLean or Tysons Corner
OnsiteFull Time
Guidehouse
Guidehouse: Global consulting firm serving public and commercial sectors.
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)
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1mo
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Senior Backend Software Engineer
Arkansas or California or Colorado or District of Columbia or Florida or Illinois or Massachusetts or Maryland or Maine or Michigan or New Jersey or Ohio or Pennsylvania or South Carolina or Texas or Utah or Virginia or Washington
$165k-$195k/yr RemoteFull Time
SITE Technologies
SITE Technologies: AI-powered facility intelligence platform helps commercial, industrial, and retail property owners assess assets and plan maintenance.
5+ YOE5+ years backend development experience with Python and FastAPI, strong backend architecture, relational modeling, AWS services, Docker, CI/CD, and cross-team communication.
Python, FastAPI, PostgreSQL, SQLAlchemy, Alembic, Flyway, AWS, ECS, Lambda, RDS, S3, IAM, Docker, Git, CI/CD, GitHub Actions, AWS CodePipeline, Claude Code, Cursor, Terraform, Terragrunt, Datadog, Sentry, LangGraph, Claude Code SDK, Amazon Bedrock
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26-1106: Python Developer - Herndon, VA
Herndon, Virginia, United States
$110k-$150k/yr OnsiteFull Time
Navitas Business Consulting
Navitas Business Consulting: Woman-owned IT consulting firm delivering cloud, AI, cybersecurity, and digital transformation services to government and commercial clients.
5+ YOEBachelor's or equivalent,5+ years Python development,experience with Flask or FastAPI,REST API design,relational and NoSQL databases,Git,CI/CD,Docker,Kubernetes,AWS,and secure coding for DoD environments.
Python, Flask, FastAPI, Git, CI/CD, Docker, Kubernetes, AWS
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2mo
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AI Developer
Arlington, Virginia, United States
$78k-$176k/yr OnsiteFull Time
Booz Allen Hamilton
Booz Allen HamiltonNYSE: BAH: Global firm providing management, technology, and engineering consulting services.
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
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1mo
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Full Stack Developer
Florida or Herndon or Texas or Virtual
RemoteFull Time
Constellis
Constellis: Provides global risk management and security solutions.
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
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2mo
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AI Developer
Arlington, Virginia, United States
$78k-$176k/yr HybridFull Time
Booz Allen Hamilton
Booz Allen HamiltonNYSE: BAH: Global firm providing management, technology, and engineering consulting services.
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
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1mo
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Generative AI Engineer (Clearance Required)
Arlington, Virginia, United States
HybridFull Time
InterImage
InterImage: Woman-owned modernization contractor delivering software, cybersecurity, cloud, data, automation, and AI solutions to government and commercial clients.
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
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1mo
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Full Stack Developer
Chantilly, Virginia, United States
OnsiteFull Time
NS2 Mission
NS2 Mission: Private SAP NS2 subsidiary delivering secure data, analytics, sensor, and spatial solutions to defense and intelligence organizations.
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
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3w
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Backend Data Engineer
Massachusetts or California or Maryland or Texas or Virginia or Dubai or Bosnia And Herzegovina or Croatia or Serbia or Belgrade or Sarajevo or Tuzla or Washington
HybridFull Time
Ruya AI
Ruya AI: Venture-backed defense-technology building AI-native intelligence software for sovereign institutions and affiliated organizations.
Production experience with Python, FastAPI, TypeScript, Express, PostgreSQL, OAuth/OIDC, JWT, authorization, service contracts, testing, observability, and distributed-system reliability.
Python, FastAPI, TypeScript, Express, PostgreSQL, OIDC, JWT, Sentry, Langfuse, Pydantic, asyncio, Snowflake, ClickHouse, NetworkX, Temporal, GCP, AWS, REST APIs, SSE, WebSocket
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1mo
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Full Stack Developer
Chantilly, Virginia, United States
$150k-$200k/yr OnsiteFull Time
GRVTY
GRVTY: Defense technology firm delivering automated intelligence and mission support.
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
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2mo
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Full Stack Developer
Chantilly, Virginia, 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.
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
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2mo
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Senior Software Engineer - Product
Yonkers or Washington or Colchester or Arizona or California or Connecticut or Illinois or Maryland or Massachusetts or Michigan or New Hampshire or New Jersey or New York or Texas or Vermont or Virginia or District of Columbia
$115k-$160k/yr RemoteFull Time
Consumer Reports
Consumer Reports: Independent nonprofit consumer organization providing product testing, journalism, ratings, research, and advocacy for consumers.
5+ YOE5+ years software engineering experience; proficiency with React, React Native, Python (FastAPI); experience building multi-platform apps, CI/CD, automated testing, observability; strong communication; bachelor’s degree preferred.
React, React Native, Python, FastAPI, AWS, Azure, Google Cloud Platform, CI/CD
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1mo
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Senior Software Engineer - AI, CoCounsel International
Eagan or Frisco or New York City or Ann Arbor or San Francisco or Los Angeles or Irvine or McLean or Washington
$110k-$204k/yr HybridFull Time
Thomson Reuters
Thomson ReutersTSX, NASDAQ: TRI: Global provider of trusted information, software, and news.
4+ YOE4+ years backend engineering experience with Python, FastAPI, PostgreSQL, AWS; production agentic AI and LLM integration experience; strong debugging, architecture, and collaboration skills.
Python, FastAPI, PostgreSQL, AWS, OpenAI, Anthropic
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2mo
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Full Stack Software Developer
Chantilly, Virginia, United States
$50k-$290k/yr OnsiteFull Time
The Swift Group
The Swift Group: Invisible by Design. Impossible to Ignore.
5+ YOE5+ years Python (Flask/Django/FastAPI), 2–3 years SQL/ORM, 1–3 years JS/TS/CSS and React/Angular/Vue, 1–3 years AWS and container deployment, US citizenship and active TS/SCI with Polygraph required.
Python, Flask, Django, FastAPI, SQL, SQLAlchemy, JavaScript, TypeScript, CSS, React, Angular, Vue, AWS, Containers
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1mo
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Software Engineer II (Java Focus)
Leawood or McLean
OnsiteFull Time
Torch.AI
Torch.AI: Private defense-focused AI software building reasoning infrastructure for U.S. government missions.
3+ YOEB.S. or M.S. in CS/Engineering, 3+ years backend experience, strong Python or Java skills, experience with FastAPI/Flask or Spring Boot/Micronaut, SQL/NoSQL, cloud (AWS), Docker, Git, and CI/CD; U.S. citizenship and clearance eligibility.
Python, FastAPI, Flask, Java, Spring Boot, Micronaut, JSON, SQL, NoSQL, AWS, Docker, Git, Kafka
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