15 fastapi developer jobs at 11 companies in Downingtown, PA

4w
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Lead Software Engineer
Wilmington, Delaware, United States
OnsiteFull Time
JPMorgan Chase
JPMorgan ChaseNYSE: JPM: Global financial services firm providing banking and investment solutions.
5+ YOE5+ years software engineering experience; building high-volume, low-latency transactional systems; microservices with Java/Spring Boot and Python (FastAPI/Flask); AWS services experience; SQL/RDBMS proficiency; agile/SCRUM and experience with AI-assisted development tools.
Java, Python, Spring Boot, FastAPI, Flask, S3, DynamoDB, ECS, EKS, RDS, Lambda, ALB, NLB, GitHub Copilot, Claude, Splunk, Dynatrace, Grafana, RDBMS, SQL, JDBC, Databricks
1mo
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AI Lead Developer
Exton, Pennsylvania, United States
OnsiteFull Time
SID Global Solutions
SID Global Solutions: Provides AI-driven digital transformation and cloud infrastructure services.
10+ YOE10+ years software engineering (4+ years in AI/GenAI), strong Python with FastAPI/Flask, experience with LangChain/LangGraph/AutoGen/ADK/MCP, RAG and vector DBs, cloud (AWS/Microsoft Azure/GCP), Docker/Kubernetes, Redis, Kafka, and AI productionization.
ADK, AutoGen, Chroma, Claude, Docker, FAISS, FastAPI, Flask, GCP, Gemini, Hugging Face, Kafka, LangChain, LangGraph, MCP (Model Context Protocol), Microsoft Azure, Microsoft Azure AI Search, Microsoft Azure OpenAI, OpenAI, Pinecone, Python, Redis, Spark, Weaviate, CI/CD, AWS
1mo
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AI Engineer
Broomall or United States
$175k-$190k/yr RemoteFull Time
Xactus
Xactus: Provides verification and credit reporting for mortgage lenders.
3+ YOEBachelor's degree or equivalent; 3+ years building production AI/ML systems; experience with LangChain/LangSmith/Agentcore, Claude/GPT, Python, FastAPI, SQL, RAG/semantic search, Neo4j/Neptune, and AWS (S3, CloudFormation, CloudWatch).
LangChain, LangSmith, Agentcore, Neo4j, Neptune, Python, AWS Glue, S3, CloudFormation, CloudWatch, SQL, Cypher, SPARQL, OpenSearch, FastAPI, MLflow, PyTorch, TensorFlow, scikit-learn, Claude, GPT, AWS Bedrock, Codex, Terraform, Docker, Kubernetes
2w
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Senior Data Engineer
Irving or Woonsocket or Wellesley or New York City or Blue Bell
$93k-$222k/yr HybridFull Time
CVS Health
CVS HealthNYSE: CVS: Provides retail pharmacy, health insurance, and pharmacy benefit management services.
5+ YOE5+ years data engineering experience in cloud environments; strong Python (Flask/FastAPI), SQL, cloud-native architectures (GCP preferred; Azure/AWS acceptable), experience with AI/LLM workflows and production-grade data pipelines.
GCP, Azure, AWS, Python, Flask, FastAPI, BigQuery, SQL, Airflow, Dataflow, Pub/Sub, Cloud Functions, Vertex AI, Azure Data Factory, AWS Glue, Copilot, Cursor AI, Claude Code, LLMs, RAG, MCP
1d
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Lead Software Engineer - Python, AWS, Big Data
Wilmington, Delaware, United States
OnsiteFull Time
JPMorgan Chase
JPMorgan ChaseNYSE: JPM: Global financial services firm providing banking and investment solutions.
5+ YOE5+ years software engineering experience with Python, Big Data and data pipeline design; hands-on with AWS, Spark, Terraform and delivering production-grade systems; experience with AI-assisted development preferred.
Python, FAST API, Spark, AWS Lambda, AWS Glue, AWS Step Function, ECS, Terraform, Snowflake, AWS Bedrock
1mo
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GenAI Python Systems Engineer –Senior Manager
Chicago or Raleigh or Charlotte or Cincinnati or Cleveland or Columbia or Columbus or Dallas or Baltimore or Richmond or Rosemont or Sacramento or Boston or St. Louis or Salt Lake City or San Antonio or San Diego or San Francisco or Silicon Valley or Seattle or Spartanburg or Albany or Stamford or Tampa or Atlanta or Toledo or Austin or Tulsa or Washington or Denver or Des Moines or Detroit or Buffalo or Florham Park or Kansas City or Las Vegas or Little Rock or Los Angeles or Louisville or Birmingham or Fayetteville or Miami or Milwaukee or Minneapolis or Nashville or New Orleans or New York or Oklahoma City or Philadelphia or Phoenix or Pittsburgh or Portland
$124k-$280k/yr HybridFull Time
PwC
PwC: Providing audit, tax, and management consulting services to businesses.
8+ YOESenior Manager level with 8+ years of experience; proficient in Python, SQL, FastAPI; cloud certifications a plus; willing to travel up to 80%; Bachelor's degree required.
Python, SQL, FastAPI, Cloud Platforms, LLM techniques, Data Warehousing, Data Lakes, IAM
3mo
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URBN Staff Machine Learning Engineer
Philadelphia, Pennsylvania, United States
OnsiteFull Time
Urban Outfitters
Urban OutfittersNASDAQ: URBN: Retailer of apparel, home goods, and lifestyle products.
1+ YOEHands-on experience building or operating image/video generation systems; strong Python and ML framework skills; experience with APIs, distributed systems, and cloud.
Python, PyTorch, Hugging Face, FastAPI, GraphQL, Docker, Terraform, LangGraph, ADK, A2A, CrewAI, MCP, Kubernetes
3mo
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URBN Staff Engineer, GenAI
Philadelphia, Pennsylvania, United States
OnsiteFull Time
Urban Outfitters
Urban OutfittersNASDAQ: URBN: Multi-brand retail operator of lifestyle apparel and home goods.
1+ YOE1+ year hands-on experience with image generation systems; strong Python and ML framework skills; experience designing scalable APIs and cloud infrastructure; Bachelor's or Master's in CS/Engineering/Math or related field; excellent communicaton and collaboration.
Python, PyTorch, Hugging Face, LangGraph, ADK, A2A, CrewAI, MCP, FastAPI, GraphQL, Docker, Terraform, Airflow, dbt
1d
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Slalom Flex (Project Based)- ML Ops Engineer
Philadelphia, Pennsylvania, United States
$80-$100/hr HybridFull Time
Slalom
Slalom: Provides business and technology consulting and software engineering services.
5+ YOEBachelor's/Master's in a quantitative field,5+ years ML engineering/MLOps experience,Python and ML framework proficiency,Azure Databricks and MLflow experience,CI/CD and containerization skills,enterprise production deployment experience.
Scikit-learn, PyTorch, TensorFlow, FastAPI, Flask, MLflow, Apache Spark, Delta Lake, Databricks, Unity Catalog, Feature Store, Git, Docker, Azure Data Lake Storage Gen2 (ADLS), Azure Key Vault, Azure Monitor, Azure DevOps, GitHub Actions
1mo
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Senior Python Development Lead
Philadelphia, Pennsylvania, United States
OnsiteFull Time
Brown Brothers Harriman
Brown Brothers Harriman: Providing global investment management, custody, and private banking services.
15+ YOE5+ Mgmt15+ years in data engineering/software development; Python/Django; ETL pipelines; data visualization; Agile; Linux; security; leads 5-6 juniors
Python, Django, SQL, Bash, JavaScript, Plotly Dash, D3.js, AG Grid, Apache Airflow, FastAPI, Linux, Git, CI/CD
2w
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Systems Programmer Analyst Sr.
Philadelphia, Pennsylvania, United States
OnsiteFull Time
Brown Brothers Harriman
Brown Brothers Harriman: Providing global investment management, custody, and private banking services.
8+ YOE8+ years of software development and data engineering experience with Python, Django, SQL, ETL pipelines, data visualizations, Linux infrastructure, and secure coding practices.
Python, SQL, Bash, Javascript, Plotly Dash, D3.js, AG Grid, Apache Airflow, Django, FastAPI, Linux
2mo
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Computer Scientist (Job #718)
Aberdeen, Maryland, United States
OnsiteFull Time
Defense Acquisition Support Services
Defense Acquisition Support Services: Provides systems engineering and technical assistance to defense agencies.
8+ YOEActive DoD security clearance, Bachelors in CS/CE/Data Science, 8+ years experience, prior military or DoD program experience, DevSecOps familiarity, strong software development and integration skills.
React, React Native, HTML, JavaScript, TypeScript, eCharts, D3, PowerBI, Python, FastAPI, SQL, SQLite, Vantage, Foundry
1mo
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AI Solutions Architect
Kennett Square or Pennsylvania
HybridFull Time
Chatham Financial
Chatham Financial: An independent capital markets advisor delivering integrated advice and technology to help clients manage financial risk.
5+ YOEBachelor's in CS/IS/Engineering or equivalent, 5+ years in solutions/enterprise architecture, experience with Azure cloud services, Python, C#/.NET, TypeScript/React, OAuth2/OIDC, LLM integration patterns, CI/CD (GitHub Actions), and strong communication.
Onyx, Python, FastAPI, Azure, App Service, Functions, Cosmos DB, Blob Storage, C#, .NET, PostgreSQL, TypeScript, React, OAuth 2.0, OpenID Connect (OIDC), GitHub Actions, CI/CD, large language model (LLM)
3w
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Agentic AI Architect - Intelligence Engineering (East)
Atlanta or Boston or Charlotte or Hartford or Miami or New Brunswick or New York City or Philadelphia or Raleigh or Washington
$108k-$218k/yr HybridFull Time
Slalom
Slalom: Provides business and technology consulting and software engineering services.
5+ YOE5+ years software engineering experience with 2+ years on generative/agentic AI; experience designing multi-agent systems, RAG, cloud AI platforms, Python and API frameworks, evaluation and governance for production AI systems.
Amazon Web Services, Azure, Google Cloud, AWS Bedrock, Azure AI Foundry, OpenAI Service, GCP Vertex AI, Gemini, Databricks, Lang Graph, Strands Agents SDK, OpenAI Agents SDK, Google ADK, Model Context Protocol (MCP), LangSmith, RAGAS, DeepEval, Claude Code, Cursor, Kiro, Python, FastAPI, Flask
1mo
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Staff Software Engineering Manager
Aurora or King of Prussia
$99k-$207k/yr HybridFull Time
CACI International
CACI InternationalNYSE: CACI: Provides information technology and engineering services for government agencies.
8+ YOE3+ MgmtTS/SCI required; bachelor’s in CS/Engineering; 8+ years software development, 3+ years leadership; proficiency with backend languages (Python, Java, C#, Go), cloud (AWS/Azure/GCP), relational and NoSQL databases, Git and CI/CD.
Python, Java, C#, Go, Node.js, Express, NestJS, Django, Flask, FastAPI, Spring Boot, Quarkus, .NET Core, Ruby/Rails, PostgreSQL, MySQL, MongoDB, Redis, SQL, ORMs, Git, CI/CD, AWS, Azure, GCP