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VirginiaRemote · Hybrid · Onsite · Field · All Environments

VirginiaRemote · Hybrid · Onsite · Field · All Environments

VirginiaRemote · Hybrid · Onsite · Field · All Environments

99 fastapi developer jobs at 51 companies in Virginia

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1mo

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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2w

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2w

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

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2d

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

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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

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Senior Software Engineer

New York City or Arizona or California or Colorado or Connecticut or Florida or Georgia or Maine or Maryland or Massachusetts or Michigan or Minnesota or New Jersey or New York or North Carolina or Oregon or Rhode Island or South Carolina or Tennessee or Texas or Virginia or Utah or Wisconsin

$165k-$185k/yr RemoteFull Time

Electric

Electric: Provides automated IT management and security services for businesses.

8+ YOE8+ years backend experience with modern Python stack, leadership experience, proficiency in Postgres/SQLAlchemy, AWS, Terraform, FastAPI, React/TypeScript, observability, and familiarity with AI-assisted development.

Python, FastAPI, Pydantic, PostgreSQL, SQLAlchemy, Alembic, Temporal, Redis, AWS RDS, AWS S3, AWS SQS, AWS DynamoDB, AWS ECS, AWS IAM, Terraform, React, TypeScript, Claude Code

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3w

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3w

Full Stack Developer

Chantilly, Virginia, United States

$112k-$222k/yr OnsiteFull Time

Accenture Federal Services

Accenture Federal ServicesNYSE: ACN: Provides technology and consulting services to U.S. federal agencies.

5+ YOE5+ years software development experience with Python (Flask/Django/FastAPI), APIs, database/datalayer work, front-end development (JavaScript/React/Angular/Vue), cloud (AWS), containers, and Agile/Scrum; active TS/SCI with Poly required; US citizenship and unrestricted work authorization required.

Python, Flask, Django, FastAPI, SQL, SQLAlchemy, JavaScript, TypeScript, CSS, React, Angular, Vue, Amazon Web Services (AWS), uv, ruff, pyright, pytest, coverage, Selenium, Karma, WordPress, MongoDB

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3w

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3w

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)

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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: Provides AI-powered property condition assessments and management software.

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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2w

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

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2w

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

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2d

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

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1w

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

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1w

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

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2w

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

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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

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2w

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

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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

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Principal Engineer, CoCounsel

Eagan or Frisco or New York City or Toronto or Ann Arbor or San Francisco or Los Angeles or Irvine or McLean or Washington

$159k-$295k/yr HybridFull Time

Thomson Reuters

Thomson ReutersNASDAQ: TRI: Provides professional software, data, and news services globally.

Bachelor's degree (or equivalent) in CS or CE, deep Python and distributed systems experience, hands-on AI/LLM and agent experience, FastAPI/PostgreSQL/AWS familiarity, identity/IAM (SAML, OIDC, OAuth 2.0) expertise, strong communication.

Python, FastAPI, PostgreSQL, AWS, SSO, SAML, OIDC, OAuth 2.0, RBAC, ABAC, Anthropic, OpenAI, LLMs, MCP servers, vector databases, embeddings, semantic search

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1mo

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: Tests products and publishes ratings for consumer advocacy.

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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Full Stack Software Developer

Chantilly, Virginia, United States

$50k-$290k/yr OnsiteFull Time

The Swift Group: Providing engineering and cybersecurity services for national security missions.

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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