37 senior fastapi developer jobs at 26 companies in Washington
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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 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
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
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
1mo
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Senior Software Engineer II
Seattle, Washington, United States
$164k-$221k/yr OnsiteFull Time
5+ YOE5+ years software engineering experience, bachelor’s in computer science or related, strong with Python/FastAPI, React/TypeScript, AWS, relational databases; Parquet and AWS Athena familiarity preferred.
Python, FastAPI, React, TypeScript, AWS, Parquet, AWS Athena
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Senior Software Engineer - Growth (Fullstack)
Seattle, Washington, United States
$180k-$210k/yr HybridFull Time
5+ YOE5+ years full-stack experience; TypeScript/React and Python/FastAPI; SQL; A/B testing/experimentation experience; mentoring experience; strong ownership and cross-functional collaboration.
TypeScript, React, Python, FastAPI, SQL, Zoom, Microsoft Teams, Google Meet, Slack
3mo
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Senior Data Engineer IS - Remote
Portland or AK or Hobbs or Levelland or Lubbock or Plainview or WA
RemoteFull Time
5+ YOEBachelor's in CS/CE/Math/Engineering; 5+ years as Senior Data Engineer; remote work option; strong cloud/ETL/data warehousing experience.
Hadoop, Spark, NoSQL, SQL, Python, Linux, Snowflake, Synapse, Redshift, BigQuery, Kafka, Flink, EHR/EMR, HL7, FHIR, FastAPI, Flask, Airflow, dbt, NiFi, Informatica, Fivetran, LLM, LangChain, LlamaIndex, embeddings
1mo
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Senior Machine Learning Engineer (10187)
Seattle or Salem
$110k-$160k/yr HybridFull Time
4+ YOEBachelor's degree in math/computer science, 4+ years software development experience, strong Python, FastAPI, Docker, Kubernetes, cloud architecture experience, ML familiarity (PyTorch, Sagemaker) and leadership/mentorship experience.
Python, FastAPI, Docker, Kubernetes, CI/CD, AWS, Azure, Google Cloud, PyTorch, Sagemaker, Triton, TensorRT, NoSQL
4w
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Senior Software Engineer, W&B Agent - W&B
Livingston or New York City or San Francisco or Sunnyvale or Bellevue
$182k-$242k/yr OnsiteFull Time
4+ YOE4+ years full‑stack experience with Python backend and React/TypeScript frontend; experience with FastAPI, Kubernetes, distributed systems, observability, and MySQL; security- and performance-minded.
Python, FastAPI, Kubernetes, React, TypeScript, Datadog, Weave tracing, MySQL, WebSockets, server-sent events
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
2w
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Senior Software Engineer
San Mateo or Arizona or California or Colorado or Florida or Georgia or Illinois or Nevada or North Carolina or Oregon or Texas or Utah or Washington
$160k-$180k/yr RemoteFull Time
5+ YOE5-7 years software engineering, Bachelor's in Computer Science or related (preferred), proficiency in Python and Java, experience with event-driven architectures, cloud (AWS), Kubernetes, real-time data pipelines, and healthcare data standards.
Apache Kafka, Airflow, Flink, DataDog, Kibana, Kafka Streams, Spark Streaming, Flask, FastAPI, Spring Boot, AWS, Kubernetes, Kinesis, Python, Java, Redshift, BigQuery, Snowflake, DynamoDB, FHIR, CCDA, HL7 V2/V3, DICOM
1w
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AI Forward Deployed Engineer (FDE)
New Jersey or Seattle
$140k-$200k/yr HybridFull Time
Hands-on experience building AI agents, RAG and vector DBs, Python development (FastAPI), Docker and GitHub, LLM selection and prompt engineering; bachelor’s degree or equivalent experience; must be authorized to work in the US.
Google ADK, CoPilot Studio, CrewAI, Autogen, RAG pipelines, Vector DBs, Python, LangChain, Hugging Face, OpenAI API, FastAPI, Docker, GitHub
2mo
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Software Engineer, Ads Manager
Seattle, Washington, United States
$230k-$385k/yr HybridFull Time
7+ YOE7+ years building high-scale systems; experience with Python/FastAPI and TypeScript/React; advertiser-facing platforms; privacy and safety focus.
Python, FastAPI, TypeScript, React
1w
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Senior Software Engineer, AI Agentic Experience (Auth0)
Bellevue or Chicago or New York City
$147k-$202k/yr HybridFull Time
5+ YOE5+ years software engineering experience building developer tools or platforms; proficiency in JavaScript/TypeScript, Golang and/or Python; experience with LLM APIs or agent runtimes; familiarity with OAuth2/OIDC/JWT; strong architecture, documentation, and collaboration skills.
JavaScript, TypeScript, Python, React, Next.js, FastAPI, OAuth2, OIDC, JWT
2mo
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Lead Software Engineer - Full Stack
Seattle or India
$152k-$215k/yr OnsiteFull Time
5+ YOE5+ years software engineering experience; strong Python; Django or FastAPI; system design; production ownership; cloud, CI/CD, security.
Python, Django, FastAPI, RabbitMQ, AWS, Terraform, React
1mo
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Senior or Principal Software Development Engineer (Full Stack) - Agent Factory
Seattle or Toronto or Vancouver
$164k-$246k/yr HybridFull Time
8+ YOE8+ years software engineering (Senior) or 12+ years (Principal); strong full-stack experience with Python web frameworks, React and TypeScript, relational databases (PostgreSQL), cloud (AWS), containerization (Docker, Kubernetes), and SaaS/DevOps practices.
Python, Flask, Django, FastAPI, React, TypeScript, PostgreSQL, AWS, Docker, Kubernetes, Java
3mo
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Senior Data Engineer IS - Remote
Portland or Alaska or California or Montana or New Mexico or Oregon or Texas or Washington
$61-$104/hr RemoteFull Time
5+ YOEBachelor's in CS/Engineering/Math,5+ years data engineering experience,expertise in Hadoop/Spark/NoSQL,SQL and Python,cloud data warehousing,EMR/EHR data,modern ETL/ELT and LLM pipelines;master's preferred.
Spark, Hadoop, Kafka, Flink, NoSQL, Python, SQL, Linux, Snowflake, Synapse, Redshift, BigQuery, FastAPI, Flask, ADF, Glue, Airflow, dbt, NiFi, Informatica, Fivetran, EHR/EMR, HL7, FHIR, LangChain, LlamaIndex, embeddings, vector DBs
1d
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Senior Software Engineer (Full Stack)
Alabama or Arkansas or Arizona or California or Colorado or Connecticut or Delaware or Florida or Georgia or Illinois or Indiana or Kentucky or Louisiana or Maryland or Maine or Michigan or Minnesota or Missouri or North Carolina or New Hampshire or New Jersey or New York or Ohio or Oregon or Pennsylvania or South Carolina or Tennessee or Texas or Utah or Virginia or Vermont or Washington
RemoteFull Time
5+ YOE5+ years building production full‑stack applications; strong JavaScript/TypeScript and React experience, backend skills (PHP/Node/Python), cloud and DevOps knowledge, API and database expertise, strong communication and systems design.
JavaScript, TypeScript, React.js, Vue.js, Angular, HTML5, CSS3, SASS, PHP, Node.js, Python, Django, FastAPI, PostgreSQL, MySQL, MongoDB, DynamoDB, Redis, AWS, GCP, Azure, Docker, Kubernetes, GitHub Actions, Jenkins, GitLab, Claude Code, Cursor, Copilot
1mo
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Sr Software Engineer, Data Science
Seattle, Washington, United States
$165k-$180k/yr HybridFull Time
7+ YOEBachelor's degree or equivalent; 7+ years backend development experience (≥2 years at senior level); strong in Go or Python; experience with ML/model lifecycle, production AI/ML systems, distributed systems, cloud (AWS/GCP), Kubernetes/Docker, and Git.
Python, Golang, Go, TypeScript, React, AWS, GCP, Terraform, Django, FastAPI, EKS, RDS, S3, SQS, EC2, IAM, Packer, Vault, Kubernetes, Docker, Git, PostgreSQL, SQL
4w
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Senior Software and AI Engineer
Livingston or New York or Sunnyvale or San Francisco or Bellevue
$182k-$242k/yr OnsiteFull Time
3+ YOE3+ years professional programming; full‑stack development with React/TypeScript and backend services in Node.js or Go; experience with GenAI/LLM frameworks (LangChain, ChatGPT API, Glean API); cloud, Kubernetes, and CI/CD familiarity.
Workato, LangChain, LangGraph, ChatGPT agentflow, ChatGPT API, OpenAI API, Gemini agent flow, Glean API, React, TypeScript, Node.js, Go, Python, C++, C#, Java, FastAPI, gRPC, Next, Cursor, Claude, Copilot, ChatGPT Codex, Ray, Kafka, Spark, Kubernetes, AWS, Azure, GCP, Workato, Boomi, ERP, HRIS, DCIM, Data Warehouse
2w
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Principal Software Engineer (PMTS)
Bellevue, Washington, United States
$197k-$314k/yr OnsiteFull Time
10+ YOE10+ years software development experience, strong Java and Python, distributed systems, Kubernetes, Spring Boot, relational databases, multi-tenant SaaS, API strategy, production incident ownership, and a related technical degree.
Java, Python, Kubernetes, Spring Boot, Hibernate, JPA, PostgreSQL, Liquibase, Alembic, Apache Spark, Trino/Presto, Parquet, Iceberg, Docker, mTLS, Tomcat, MySQL, Redis, S3, JUnit, pytest, Selenium, Playwright, SQLAlchemy, FastAPI, Flask, PySpark, Pandas
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