19 senior fastapi developer jobs at 10 companies in Bethlehem, PA
2mo
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Senior Application Engineer
Seattle or Madison or Princeton or Cambridge Crossing
$138k-$183k/yr OnsiteFull Time
5+ YOE5+ years in software/cloud engineering; AWS-native; Python/FastAPI; TypeScript/Node; CI/CD; experience with LLM/agentic AI; MCP/FastMCP; security, IAM, VPC; knowledge of data stores.
Python, FastAPI, TypeScript/Node, AWS, Terraform, AWS CDK, CloudFormation, LangGraph, LangChain, PydanticAI, OpenAI, Anthropic, Gemini, AWS Bedrock
3w
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Senior AI Engineer
Seattle or Cambridge or Princeton or Madison
$138k-$183k/yr OnsiteFull Time
5+ YOEBachelor's degree,5+ years building and scaling cloud-native AI applications,proficiency in Python/FastAPI or TypeScript/Node,AWS experience,LLM/agent integration,CI/CD and infra-as-code knowledge.
AWS, Claude, LangSmith, Python, FastAPI, TypeScript, Node, LangGraph, Claude Agent SDK, LangChain, PydanticAI, Anthropic, OpenAI, Gemini, Grok, AWS Bedrock, Terraform, AWS CDK, CloudFormation, GitHub, Claude Code, Codex, Gemini CLI, Cursor, Windsurf, GitHub Copilot, LangSmith, promptfoo
3w
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Senior AI Engineer
Seattle or Madison or Princeton or Cambridge
$138k-$183k/yr OnsiteFull Time
5+ YOE5+ years building cloud-native AI applications integrating LLMs, agents, retrieval, and workflows; strong Python/FastAPI or TypeScript/Node skills; AWS experience; knowledge of secure, observable, production AI patterns.
Python, FastAPI, TypeScript, Node, LangGraph, Claude Agent SDK, LangChain, PydanticAI, MCP, FastMCP, Anthropic, OpenAI, Gemini, Grok, AWS Bedrock, AWS, Terraform, AWS CDK, CloudFormation, GitHub, LangSmith, promptfoo, Claude Code, Codex, Gemini CLI, Cursor, Windsurf, GitHub Copilot
2mo
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Senior Application Engineer
Seattle or Cambridge or Princeton or Madison
$138k-$183k/yr OnsiteFull Time
5+ YOEBachelor's or higher in CS/Engineering/Science, 5+ years software/cloud engineering experience, strong proficiency with Python/FastAPI and TypeScript/Node, hands-on AWS experience, familiarity with LLM/RAG/agent frameworks and CI/CD/IaC tooling.
LangGraph, FastMCP, OpenSearch, Amazon S3 Vectors, Amazon Neptune, S3, Athena, RDS/PostgreSQL, PostgreSQL/RDS, ElastiCache/Redis, Redis, AWS Fargate, Lambda, IAM, VPC, Python, FastAPI, TypeScript/Node, Terraform, AWS CDK, CloudFormation, LangChain, PydanticAI, Claude Agent SDK, MCP, LangSmith, OpenAI, Anthropic, Gemini, AWS Bedrock, Claude Code, Codex, Gemini CLI, GitHub Copilot, GitHub
6d
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Senior AI Software Engineer
New Brunswick, New Jersey, United States
$102k-$137k/yr OnsiteFull Time
8+ YOE8+ years software engineering experience with 2+ years building production-grade AI/LLM applications; strong Python and FastAPI skills; experience with multi-agent orchestration, RAG, vector databases, semantic search, and integrating LLMs with enterprise systems.
LLMs, Retrieval-Augmented Generation (RAG), LangGraph, CrewAI, Semantic Kernel, Model Context Protocol (MCP), Python, FastAPI, Azure AI Document Intelligence, Azure, AWS, Google Cloud
2mo
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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
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
2mo
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AI Lead Developer
Exton, Pennsylvania, United States
OnsiteFull Time
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
2w
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AI Software Developer
New Brunswick, New Jersey, United States
$102k-$137k/yr OnsiteFull Time
5+ YOE5+ years software engineering experience with 3+ years building production-grade AI/LLM applications; strong Python and FastAPI skills; experience with RAG, vector databases, semantic search, multi-agent frameworks, and enterprise integrations.
LangGraph, CrewAI, Semantic Kernel, Model Context Protocol (MCP), Large Language Models (LLMs), Retrieval-Augmented Generation (RAG), vector database, semantic search, Python, FastAPI, Azure AI Document Intelligence, Azure, AWS, Google Cloud, MLOps
1w
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Full-Stack Engineer III (Contract to Hire)
Mount Arlington, New Jersey, United States
OnsiteContract, Full Time
7+ YOE7+ years full-stack engineering experience; expertise in React, Python/FastAPI, PostgreSQL; SSO/OIDC/Auth0 and third-party integrations; AI-assisted development and security-by-design; BS in Computer Science.
React, Python, FastAPI, PostgreSQL, Auth0, Veeva, SSO, OIDC
6d
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Associate Director, IT Senior Engineer
Princeton, New Jersey, United States
$169k-$253k/yr OnsiteFull Time
10+ YOE10+ years in AI/ML platform engineering with cloud AI experience, Python and FastAPI/Flask proficiency, experience with agentic AI frameworks, CI/CD/IaC, containerization, and regulated-compliant production deployments.
Dataiku, Azure AI, OpenAI, Azure AI/ML, Cognitive Search, AWS Bedrock, AgentCore, Comprehend, SageMaker, Snowflake Cortex, LangChain, LangGraph, AutoGen, Semantic Kernel, Model Context Protocol (MCP), Python, FastAPI, Flask, Docker, OpenSearch, Pinecone
2d
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Senior AI Engineer
Princeton, New Jersey, United States
HybridFull Time
4+ YOEMaster's or bachelor's in CS or related; 4+ years ML experience with production LLM systems; strong Python, FastAPI, HuggingFace, MLOps, vector DBs, cloud (Azure/AWS/GCP), and DevOps practices.
FastAPI, MLOps, Azure OpenAI, GPT-4, GPT-4 Vision, Langfuse, Celery, asyncio, Python, SQL, Pydantic, PySpark, Scala, MLFlow, Pinecone, Weaviate, Chroma, HuggingFace, Keras, TensorFlow, PyTorch, LangChain, LlamaIndex, Docker, Azure DevOps, GitHub Actions, Kubernetes, Azure Key Vault, Azure Blob Storage, Azure Container Registry
2mo
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Senior Python Development Lead
Philadelphia, Pennsylvania, United States
OnsiteFull Time
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
1d
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GenAI Sr. Developer and Lead
Somerset or Jersey City
$63k-$100k/yr HybridFull Time
10+ YOE10+ years software development experience, including 3+ years in enterprise AI/ML or Generative AI; strong Python, AWS, LLM, agentic AI, API, cloud security, and stakeholder leadership experience.
Amazon Bedrock, Python, LangChain, LangGraph, Retrieval-Augmented Generation (RAG), AWS Lambda, Amazon ECS, AWS Fargate, AWS Step Functions, Amazon EventBridge, AWS Identity and Access Management (IAM), Amazon S3, Docker, FastAPI, CloudWatch, LangSmith, OpenTelemetry, PostgreSQL, Amazon DynamoDB, GitHub, Jenkins
3w
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Full Stack AI Engineer
Princeton, New Jersey, United States
$94k-$114k/yr OnsiteFull Time
5+ YOE5+ years software engineering experience; bachelor\u0002s in CS or related; hands-on Generative/Agentic AI, Python and React proficiency; experience with LLM frameworks, cloud (AWS), APIs, EM/ML tooling; strong communication and problem solving.
Python, Java, Node JS, React JS, Salesforce, LangChain, OpenAI, AWS Bedrock, LlamaIndex, Google ADK, FastAPI, TensorFlow, PyTorch, SageMaker, AWS Lambda, AWS S3, DynamoDB, SQL, NoSQL, JSON, XML
3w
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Senior Manager, PDS BI&T Architecture & Components
New Brunswick, New Jersey, United States
$135k-$164k/yr OnsiteFull Time
6+ YOE6+ years software engineering experience building full-stack, LLM-powered/agentic applications; strong Python, async frameworks, FastAPI, React, cloud, containerization, observability, and platform governance experience.
Python, asyncio, FastAPI, Server-Sent Events (SSE), WebSocket, Redis, React, LangGraph, LangChain, CrewAI, Autogen, AWS Bedrock, Azure OpenAI, Anthropic, OpenAI, Claude Desktop, Model Context Protocol, Docker, Kubernetes, Amazon EKS, CloudFormation, Git, CI/CD, OPA/Gatekeeper, Prometheus, Grafana, Loki
2w
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Slalom Flex (Project Based)- ML Ops Engineer
Philadelphia, Pennsylvania, United States
$80-$100/hr HybridFull Time
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
3w
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Full Stack AI Engineer
Princeton, New Jersey, United States
$94k-$114k/yr OnsiteFull Time
5+ years software engineering experience, Bachelor's in CS or related, hands-on Generative/Agentic AI, Python/React proficiency, knowledge of cloud, APIs, ML frameworks, strong communication and leadership.
Python, Java, Node JS, React JS, Salesforce, OpenAI, AWS Bedrock, LangChain, LlamaIndex, Google ADK, TensorFlow, PyTorch, FastAPI, SQL, NoSQL, AWS Lambda, Amazon S3, DynamoDB, SageMaker, REST APIs, MCPs, JSON, XML, TypeScript
1mo
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Systems Programmer Analyst Sr.
Philadelphia, Pennsylvania, United States
OnsiteFull Time
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
1mo
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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
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
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