17 fastapi developer jobs at 11 companies in Hagerstown, MD

12h
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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
2d
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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
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
2mo
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Senior AI/ML Software Engineer
Annapolis Junction or Herndon or Reston
$146k-$234k/yr HybridFull Time
Peraton
Peraton: National security and mission-critical government technology services provider.
12+ YOEBS with 12+ years, MS with 10+ years, or PhD with 7+ years in AI/ML; hands-on agentic systems; strong Python 3.12+; workflow orchestration; LLM APIs; full-stack (FastAPI/React); observability; pre-commit; US citizenship.
Python, LangChain, LangGraph, DeepAgents, Airflow, Prefect, Celery, OpenAI API, Anthropic Claude, AWS Bedrock, Ollama, FastAPI, React, Docker, PostgreSQL
4w
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Senior Developer - Generative AI Platform and Mission Support
Herndon, Virginia, United States
$146k-$234k/yr OnsiteFull Time
Peraton
Peraton: Provides advanced technology and mission support for government agencies.
7+ YOESenior developer with 7+ years (PhD) / 10+ years (MS) / 12+ years (BS) experience in software/platform development; strong Python production experience, cloud (AWS), Docker/Kubernetes, PostgreSQL/SQL, CI/CD, Git; US citizen able to obtain Public Trust.
Python, JavaScript, TypeScript, Rust, FastAPI, Docker, Kubernetes, AWS, PostgreSQL, SQL, Git, Terraform, React, LLM
4w
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Senior Developer - Generative AI Platform and Mission Support
Herndon, Virginia, United States
$146k-$234k/yr OnsiteFull Time
Peraton
Peraton: National security and mission-critical government technology services provider.
12+ YOESenior software developer with extensive production experience (min 12 years with BS), strong Python, cloud (AWS), containerization (Docker/Kubernetes), backend/API and data skills, CI/CD and Git, and US citizenship for Public Trust suitability.
Python, JavaScript, TypeScript, AWS, Docker, Kubernetes, PostgreSQL, SQL, Git, Rust, FastAPI, React, Terraform, CI/CD
2w
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AI Model Developer
Fairfax or Ashburn
$125k-$150k/yr HybridFull Time
ECS
ECSNYSE: ASGN: Provides advanced technology and engineering services to government agencies.
3+ YOEBachelor's degree in CS/AI/Data Science, US citizenship and ability to obtain Public Trust, 3+ years AI/ML and full-stack experience, strong Python and ML framework skills, backend/frontend and cloud/DevOps familiarity.
Python, NumPy, Pandas, scikit-learn, TensorFlow, PyTorch, Transformers, Django, Flask, FastAPI, React, Angular, Vue.js, PostgreSQL, MySQL, MongoDB, Redis, Docker, Kubernetes, CI/CD, AWS, Microsoft Azure, GCP, GitHub workflows, Matplotlib, Plotly, D3.js, GraphQL, JavaScript, TypeScript, Next.js, AWS Bedrock, GCP AI Platform, Microsoft Azure ML, GitHub Actions
2mo
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AI Engineer
Leesburg, Virginia, United States
RemoteFull Time
Anika Systems
Anika Systems: Provides technology solutions and consulting for federal agencies.
1+ YOEBachelor's in CS/CE/Data Science; 1-3 years ML/NLP; Python/TypeScript; LLM integration; AWS; PostgreSQL; OAuth/OIDC; security/compliance.
Python, TypeScript, FastAPI, React, OpenAI, Anthropic, Bedrock, Vertex, Azure OpenAI, AWS, Terraform, PostgreSQL, OAuth, OIDC, JWT
1mo
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Software Engineer
Ashburn, Virginia, United States
$88k-$137k/yr HybridFull Time
Visa
VisaNYSE: V: Global payment technology facilitating electronic funds transfers.
3+ YOEBachelor's degree or 3+ years of relevant experience. Strong fundamentals in at least one language; full-stack interest; AI/automation exposure; curiosity and collaboration.
Python, FastAPI, React, LangChain, LangGraph, APIs, Microservices, Distributed systems, Kafka, GitHub, CI/CD
1w
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Senior Software Engineer - Applied AI
Germantown, Maryland, United States
$107k-$155k/yr OnsiteFull Time
Leonardo DRS
Leonardo DRSNASDAQ: DRS: Manufactures advanced electronic systems for defense and military applications.
5+ YOEBachelor's degree or equivalent,5+ years software development,strong Python and Linux experience,AI/ML application experience,backend and service integration skills,US citizenship and ability to obtain DOD security clearance.
Python, Rust, TypeScript, Linux, LLMs, Ollama, LangChain, LlamaIndex, FastAPI, Flask, Docker, CI/CD
4w
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Developer - Generative AI Platform and Mission Support
Herndon, Virginia, United States
$104k-$166k/yr OnsiteFull Time
Peraton
Peraton: National security and mission-critical government technology services provider.
3+ YOEBachelor's in CS or related; 5+ years with Bachelor's (or 3+ with Master's, or Ph.D.); strong Python and production coding skills; familiarity with REST/HTTP, Git, SQL, testing practices; US citizenship and ability to obtain Public Trust.
Python, REST APIs, HTTP, Git, SQL, JavaScript, TypeScript, React, Rust, AWS, Docker, CI/CD, pytest, FastAPI, Flask, Django, PostgreSQL
4w
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Cloud Software Engineer II
Herndon or Springfield
OnsiteFull Time
Quevera
Quevera: Software engineering and cloud solutions for government and defense.
7+ YOETS/SCI with Poly required; 7+ years software engineering; 5+ years Python and JS/TS; AWS CDK and cloud-native services; microservices, data engineering, ETL, DevSecOps, observability experience.
AWS, AWS CDK, Python, FastAPI, Flask, Django, Pandas, NumPy, Apache Spark, JavaScript, TypeScript, Node.js, npm, React, Vue.js, Angular, Lambda, API Gateway, EventBridge, SQS, SNS, RDS, DynamoDB, Redshift, S3, Athena, ECS, Fargate, EKS, Glue, EMR, Kinesis, Step Functions, SageMaker, Databricks, SonarQube, Snyk, Checkmarx, CloudWatch, DataDog, New Relic, Prometheus, Grafana
2mo
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Software Engineer Sr. Consultant , Fullstack/GenAI Engineering
Ashburn, Virginia, United States
$152k-$244k/yr HybridFull Time
Visa
VisaNYSE: V: Global payment technology facilitating electronic funds transfers.
8+ YOE2+ Mgmt8+ years software engineering; 2+ years leading engineers; strong GenAI, backend/frontend, AWS, and distributed systems experience.
Python, FastAPI, Flask, Node.js, React, TypeScript, AWS Bedrock, SageMaker, LangGraph, LangChain, Haystack, RAG, Jenkins, GitHub Actions, Terraform, CloudFormation, CodePipeline, Pinecone, FAISS, OpenSearch, Weaviate, Kafka, Kinesis, Databricks, MLFlow
4w
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Developer - Generative AI Platform and Mission Support
Herndon, Virginia, United States
$104k-$166k/yr OnsiteFull Time
Peraton
Peraton: Provides advanced technology and mission support for government agencies.
3+ YOEBachelor's in a related technical field (alternatively Master's/PhD with reduced experience), strong Python and production-quality coding, Git, SQL, web fundamentals, unit/integration testing, US citizenship and ability to obtain Public Trust.
Python, Git, SQL, JavaScript, TypeScript, React, Rust, AWS, Docker, pytest, FastAPI, Flask, Django, PostgreSQL
3w
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Senior Data Engineer
Herndon, Virginia, United States
$150k-$175k/yr HybridFull Time
Dark Wolf Solutions
Dark Wolf Solutions: Provides cybersecurity and software development services to defense agencies.
8+ YOEUS citizen with active Secret clearance; B.S. in Computer Science (or equivalent) and 8+ years experience; strong Python, AWS, SQL/Trino, Apache Spark, dbt, and Kubernetes (Rancher) experience; DevSecOps and TDD practices.
Python, FastAPI, Django, Flask, JavaScript, Node.js, Express, Vue, Svelte, React, Java, Spring Boot, AWS, S3, RDS, EMR, Trino, Apache Spark, dbt, Rancher Kubernetes, Rancher RKE2, AWS EKS, Apache Airflow, HL7, FHIR, Mirth Connect, Great Expectations, OpenAPI, ORM
3w
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Senior / Lead DevOps Engineer
Noida or Rockville
HybridFull Time
3CLogic
3CLogic: Provides cloud-based voice AI and contact center software solutions.
8+ YOE8+ years experience designing and scaling AWS cloud architectures, CI/CD and GitOps (Jenkins, GitHub Actions, ArgoCD), IaC (Terraform, CloudFormation, Ansible), Kubernetes/EKS, scripting (Bash, Python), observability, security, and multi-database management.
AWS, VPC, Transit Gateway, WAF/Shield, PrivateLink, Ansible, Terraform, CloudFormation, Jenkins, GitHub Actions, ArgoCD, MySQL, RDS, PostgreSQL, DynamoDB, DocumentDB, Redis, Claude Code, MCP, Kubernetes, EKS, Bash, Python, ELK Stack, Prometheus, Grafana, OpenTelemetry, Otel, Datadog, Docker, Docker Compose, Helm, AWS CodePipeline, Git, GitHub, GitLab, Terragrunt, Sentinel, boto3, FastAPI, YAML, JSON, Linux, Alertmanager, Trivy, Aqua, LitmusChaos, AWS FIS, Karpenter, Fargate, Amazon DocumentDB, MongoDB, Memcached, Aurora, ElastiCache, KMS, IAM, TLS/SSL
1w
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AI & Data Science Intern
Carlisle, Pennsylvania, United States
OnsiteFull Time, Internship
Carlisle Companies
Carlisle CompaniesNYSE: CSL: Manufacturer of energy-efficient building envelope products and roofing systems.
Pursuing a Master's or PhD in CS/DS/Engineering, strong Python and ML/CV skills, experience with FastAPI/Streamlit and libraries (pandas, scikit-learn, OpenCV, TensorFlow/PyTorch), familiarity with LLMs and agentic AI.
Python, pandas, scikit-learn, OpenCV, TensorFlow, PyTorch, FastAPI, Flask, Django, Streamlit, Reflex, React, LangChain, LlamaIndex, SEM