HiringCafe
Join our community

26 senior fastapi developer jobs at 21 companies in Seattle, WA

2mo
Save
Mark Applied
Hide
Senior Application Engineer
Seattle or Madison or Princeton or Cambridge Crossing
$138k-$183k/yr OnsiteFull Time
Bristol Myers Squibb
Bristol Myers SquibbNew York Stock Exchange: BMY: Develops and distributes innovative medicines for serious diseases.
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
Job PostingView all
3w
Save
Mark Applied
Hide
Senior AI Engineer
Seattle or Cambridge or Princeton or Madison
$138k-$183k/yr OnsiteFull Time
Bristol Myers Squibb
Bristol Myers SquibbNYSE: BMY: Develops and manufactures innovative prescription biopharmaceutical medicines.
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
Job PostingView all
1mo
Save
Mark Applied
Hide
Senior Software Engineer II
Seattle, Washington, United States
$164k-$221k/yr OnsiteFull Time
Nautilus Biotechnology
Nautilus BiotechnologyNASDAQ: NAUT: Develops a single-molecule protein analysis platform for research.
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
Job PostingView all
1mo
Save
Mark Applied
Hide
Senior Software Engineer - Growth (Fullstack)
Seattle, Washington, United States
$180k-$210k/yr HybridFull Time
Read AI
Read AI: AI productivity platform for meeting summaries and workplace insights.
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
Job PostingView all
1mo
Save
Mark Applied
Hide
Senior Machine Learning Engineer (10187)
Seattle or Salem
$110k-$160k/yr HybridFull Time
Extreme Networks
Extreme NetworksNASDAQ: EXTR: Provides cloud-managed networking hardware and software solutions.
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
Job PostingView all
4w
Save
Mark Applied
Hide
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
CoreWeave
CoreWeaveNASDAQ: CRWV: Specialized cloud infrastructure provider for high-performance AI workloads.
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
Job PostingView all
2mo
Save
Mark Applied
Hide
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
Job PostingView all
2mo
Save
Mark Applied
Hide
Software Engineer, Ads Manager
Seattle, Washington, United States
$230k-$385k/yr HybridFull Time
OpenAI
OpenAI: Develops artificial intelligence models and generative AI software services.
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
Job PostingView all
1w
Save
Mark Applied
Hide
Senior Software Engineer, AI Agentic Experience (Auth0)
Bellevue or Chicago or New York City
$147k-$202k/yr HybridFull Time
Okta
OktaNASDAQ: OKTA: Provide secure identity management and authentication for enterprises.
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
Job PostingView all
2mo
Save
Mark Applied
Hide
Lead Software Engineer - Full Stack
Seattle or India
$152k-$215k/yr OnsiteFull Time
JPMorgan Chase
JPMorgan ChaseNYSE: JPM: Global financial services firm providing banking and investment solutions.
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
Job PostingView all
1mo
Save
Mark Applied
Hide
Senior or Principal Software Development Engineer (Full Stack) - Agent Factory
Seattle or Toronto or Vancouver
$164k-$246k/yr HybridFull Time
Workday
WorkdayNASDAQ: WDAY: Provides cloud-based software for financial and human capital management.
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
Job PostingView all
4w
Save
Mark Applied
Hide
Senior Software and AI Engineer
Livingston or New York or Sunnyvale or San Francisco or Bellevue
$182k-$242k/yr OnsiteFull Time
CoreWeave
CoreWeaveNASDAQ: CRWV: Cloud platform providing GPU-accelerated infrastructure for AI workloads.
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
Job PostingView all
1mo
Save
Mark Applied
Hide
Sr Software Engineer, Data Science
Seattle, Washington, United States
$165k-$180k/yr HybridFull Time
ExtraHop
ExtraHop: Provides network detection and response software for cybersecurity.
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
Job PostingView all
2w
Save
Mark Applied
Hide
Principal Software Engineer (PMTS)
Bellevue, Washington, United States
$197k-$314k/yr OnsiteFull Time
Salesforce
SalesforceNYSE: CRM: Sells cloud-based customer relationship management and business software solutions.
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
Job PostingView all
4w
Save
Mark Applied
Hide
Senior Security Engineer (Product)
New York City or San Francisco or Seattle
$223k-$279k/yr HybridFull Time
Headway
Headway: Builds technology that helps therapists accept insurance and run their practice to increase access to mental health care.
5+ YOE5+ years security or software engineering experience, strong application and product security skills, experience with cloud and modern stacks, security reviews, incident response, and AI-native tooling.
Lacework, Python 3, TypeScript, FastAPI, SQLAlchemy, React, Postgres, Redis, AWS, Spark, Kafka, Datadog, PagerDuty, Github, Snyk, Semgrep
Job PostingView all
1w
Save
Mark Applied
Hide
AI Architect/Developer
Seattle, Washington, United States
$82k-$193k/yr HybridFull Time
Capgemini
CapgeminiEuronext Paris: CAP: Provides global IT consulting and digital transformation services.
10+ YOE10+ years designing and delivering enterprise AI/ML architectures; expertise in LLM/ML model selection, cloud/on‑prem infrastructure, Python, CI/CD, Docker/Kubernetes, REST APIs, model tuning and governance.
PyTorch, TensorFlow, LangChain, LlamaIndex, MLflow, Kubeflow, Weights & Biases, FastAPI, Flask, Apache Airflow, Kafka, Spark, Python, SQL, C++, Go, Docker, Kubernetes, Pinecone, Milvus, Weaviate
Job PostingView all
3mo
Save
Mark Applied
Hide
Software Engineer - Sr. Consultant level
Bellevue, Washington, United States
$152k-$244k/yr HybridFull Time
Visa
VisaNYSE: V: Global payment technology facilitating electronic funds transfers.
8+ YOE8+ years of backend experience; strong Java/Spring Boot, Python; experience with microservices, distributed systems, GenAI/RAG, and cloud platforms.
Java, Spring Boot, Python, FastAPI, Flask, TypeScript, Kubernetes, Docker, ArgoCD, Jenkins, GitHub Actions, SQL, NoSQL, Kafka, RabbitMQ, Pinecone, FAISS, Weaviate, LangChain, LangGraph, Autogen, LlamaIndex, React, GraphQL
Job PostingView all
1mo
Save
Mark Applied
Hide
Sr. Systems Dev Engineer, Amazon Global Data Center Ops Central Insight and Analytics Team
Seattle, Washington, United States
$151k-$205k/yr OnsiteFull Time
Amazon
AmazonNASDAQ: AMZN: Global online retail and cloud computing technology provider.
5+ YOEBachelor's degree or equivalent experience, 5+ years systems/software/data engineering, 3+ years building data pipelines/ETL and 3+ years with cloud services (AWS). Proficiency with Python, SQL, Spark, web frameworks, and building production data platforms.
Python, SQL, Apache Spark, AWS Lambda, Amazon DynamoDB, Amazon RDS, Amazon S3, Amazon Redshift, Amazon Athena, AWS Step Functions, Amazon ECS, Streamlit, FastAPI, Flask, Plotly, D3, Altair, Amazon QuickSight, Tableau, LLM
Job PostingView all
6d
Save
Mark Applied
Hide
AI Engineering Manager, Agentic Foundation
Bellevue or South San Francisco or San Diego
$215k-$228k/yr HybridFull Time
ZS
ZS: Global management consulting and technology firm for healthcare and life sciences.
Engineering management experience; deep software engineering and system design skills; experience with distributed systems, microservices, APIs, data/storage and GenAI/LLM systems; strong backend skills (Python, FastAPI/Flask); client-facing communication.
Python, FastAPI, Flask, CI/CD
Job PostingView all
2w
Save
Mark Applied
Hide
Software Development Lead — Marketplace
Seattle, Washington, United States
OnsiteFull Time
BuyWander
BuyWander: A rebuilding the retail returns industry into a marketplace using AI, auctions, and real-time systems.
6+ YOE6+ years building consumer-facing web/mobile products; full-stack experience with front-end and backend services; real-time systems, marketplaces, search, notifications, and AI product experience.
C#, Python, FastAPI, Vue, Nuxt, PostgreSQL
Job PostingView all

Explore Jobs

Expand Your Job Search