122 fastapi developer jobs at 78 companies in Cotati, CA
2d
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Backend Engineer (Python / FastAPI)
San Francisco or Hyderabad
OnsiteFull Time
3+ YOERequires strong FastAPI and Python expertise, asynchronous programming knowledge, production backend scaling experience, database performance skills, and 3–5 years of backend development experience.
FastAPI, Python, Django, asyncio, GraphQL, Golang, NodeJS, Postgres, Redis, Amazon Web Services (AWS), Kubernetes, Rancher, RabbitMQ, Kafka, DataDog, Sentry, GitHub, Slack, Plane, Figma, Whimsical
2mo
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Senior Backend Engineer
San Francisco, California, United States
$175k-$275k/yr OnsiteFull Time
5+ YOE5+ years backend development with Python, FastAPI/Pydantic; Kubernetes/EKS; relational databases; AWS stack; building scalable services.
Python, FastAPI, Pydantic, Kubernetes, EKS, PostgreSQL, Redis, S3, DynamoDB, AWS
1mo
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Senior Software Engineer - Python
Toronto or San Francisco
$130k-$225k/yr RemoteFull Time
5+ YOE5+ years software development with production-level Python, enterprise SaaS/scale experience, proficiency with Python, Git, FastAPI, Pydantic, strong communication and mentorship skills, and unrestricted right to work in the U.S.
Python, Git, FastAPI, Pydantic
1mo
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Senior Software Engineer II, Enterprise Platform
San Francisco, California, United States
$180k-$256k/yr OnsiteFull Time
7+ YOE7+ years backend engineering experience with APIs, multi-tenancy, auth, Python/FastAPI, Kubernetes, AWS, and database design; strong API design and developer experience focus.
Python, FastAPI, Kubernetes, AWS, SQL, OpenAPI, OIDC, OAuth 2.0, OPA, REST
1mo
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Founding Engineer
San Francisco, California, United States
$120k-$150k/yr OnsiteFull Time
Experienced engineer to build core systems for quoting, procurement, and decision-making; systems thinking, high ownership, speed with judgment; familiarity with Next.js, TypeScript, Python/FastAPI, and PostgreSQL.
Next.js, TypeScript, Python, FastAPI, PostgreSQL
2mo
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Staff Platform Engineer (Pacific Time Zone)
San Francisco, California, United States
$225k-$275k/yr HybridFull Time
Senior backend engineer with platform and control-plane experience; strong Python (FastAPI) and AWS; multi-tenant SaaS; focus on observability, reliability, and developer productivity.
Python, FastAPI, AWS, Snowflake, Airflow, Spark, RBAC, API design, KMC/PSS
2mo
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Backend Software Engineer
San Francisco, California, United States
$167k-$231k/yr HybridFull Time
3+ YOE3+ years software development experience (AI/ML focus), BS/MS in CS/Engineering or equivalent, experience with GenAI, Python APIs (FastAPI/Django), containerized cloud deployments (Docker, AWS), CI/CD, and secure coding.
Python, FastAPI, Django, AWS, Docker, Terraform, Pulumi, React
1mo
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Backend Engineer - Mission Operations Services
San Francisco or Golden or Toulouse
$140k-$190k/yr OnsiteFull Time
Production Python development, Docker/container experience, backend web frameworks (Django/Flask/FastAPI), API design (HTTP/GraphQL/REST), and working with databases (Postgres, time-series DBs). Experience operating mission-critical systems preferred.
Python, Docker, Django, Flask, FastAPI, GraphQL, HTTP, REST, Postgres, InfluxDB, TimescaleDB, Kubernetes, Cockpit
1mo
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ML Platform Engineer
United States or San Francisco
$136k-$167k/yr RemoteFull Time
5+ YOE5+ years software development experience focused on data/ML/AI infrastructure; building scalable distributed systems; strong coding and design skills; proficiency with Python/Golang, Kafka, Postgres, Redis, FastAPI, Ray; cloud experience (AWS).
Python, Golang, Kafka, Postgres, Redis, FastAPI, Ray, AnyScale, LangGraph, LangSmith, AWS
1mo
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Product Engineer
San Francisco, California, United States
$115k-$150k/yr OnsiteFull Time
2+ YOE2+ years full-stack engineering experience; strong Python and React preference; SQL fluency; experience with FastAPI/Postgres/React stack; strong communication, systems mindset, and customer-focused problem solving.
FastAPI, Python, Postgres, PostgreSQL, React, SQL, Slack
1w
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AI Engineer
San Francisco, California, United States
$170k-$220k/yr OnsiteFull Time
1+ YOE1-2 years backend/full-stack production experience; familiarity with OpenAI API and LLM APIs; strong Python and FastAPI skills; experience with Redis and Postgres; passion for open source and user engagement.
Python, LLM APIs, FastAPI, Redis, Postgres, OpenAI API, Anthropic, Python SDK
1w
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Founding Product Engineer
San Francisco, California, United States
$200k-$250k/yr OnsiteFull Time
8+ YOE8+ years software engineering experience; deep backend expertise with FastAPI, Python, MongoDB; frontend with React and TypeScript; experience with LLM-driven features and B2B monetization; US work authorization required.
FastAPI, Python, MongoDB, React, TypeScript, MCP/FastMCP, LLM, Slack
2w
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Founding Product Engineer
San Francisco, California, United States
$200k-$250k/yr OnsiteFull Time
8+ YOE8+ years engineering experience, shipped end-to-end product areas, strong backend depth with FastAPI/Python/MongoDB, frontend experience with React/TypeScript, US work authorization required, no visa sponsorship.
TypeScript, React, Vercel Chat SDK, Python, FastAPI, Mongo, Atlas, GCP, Pulumi, Cloudflare Pages, FastMCP, Langfuse, Claude Code, Cursor, Vercel Eve
1mo
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Principal Engineer, CoCounsel
Eagan or Frisco or New York City or Toronto or Ann Arbor or San Francisco or Los Angeles or Irvine or McLean or Washington
$159k-$295k/yr HybridFull Time
Bachelor's degree (or equivalent) in CS or CE, deep Python and distributed systems experience, hands-on AI/LLM and agent experience, FastAPI/PostgreSQL/AWS familiarity, identity/IAM (SAML, OIDC, OAuth 2.0) expertise, strong communication.
Python, FastAPI, PostgreSQL, AWS, SSO, SAML, OIDC, OAuth 2.0, RBAC, ABAC, Anthropic, OpenAI, LLMs, MCP servers, vector databases, embeddings, semantic search
3mo
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Senior Backend Engineer (Python)
San Francisco, California, United States
$175k-$250k/yr RemoteFull Time
4+ YOE4+ years building production back-ends in Python; real-time streaming; AWS/GCP/Azure; PostgreSQL/Redis; FastAPI/asyncio; HIPAA security.
Python, FastAPI, asyncio, WebRTC, WebSockets, gRPC, AWS, GCP, Azure, Kubernetes, Kafka, SQS, Pub/Sub, Terraform, PostgreSQL, Redis, OpenTelemetry
1mo
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Senior AI Engineer
United States or New York City or Palm Beach or Los Angeles or Miami or Greenwich or Westchester County or The Hamptons or San Francisco or Manhattan
$190k-$250k/yr RemoteFull Time
4+ YOE4+ years building and operating LLM-powered production ML systems, strong Python, backend framework experience (FastAPI/Flask), LLM orchestration and retrieval design, Snowflake/dbt/Dagster/Airflow familiarity, evaluation systems, HIPAA/PHI knowledge, and strong written communication.
Python, FastAPI, Flask, Snowflake, dbt, Dagster, Airflow, vLLM, Triton, TGI, SGLang, LOINC, SNOMED CT, ICD-10, RxNorm, FHIR, HL7
1mo
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Senior Software Engineer, Full-Stack
San Francisco, California, United States
$170k-$230k/yr HybridFull Time
7+ YOE7+ years software engineering experience with deep backend expertise; experience with distributed systems, production LLM/Generative AI systems, FastAPI, MongoDB/Postgres, Docker, and AWS; strong communication and product mindset.
FastAPI, MongoDB, Postgres, Docker, AWS, LLMs, Generative AI
2mo
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Software engineer, generative AI
San Francisco or New York City or Seattle or Austin or Chicago or London
$112k-$304k/yr HybridFull Time
3+ YOEMinimum 3 years software engineering experience with strong Python production experience; experience building generative AI/LLM applications, vector DBs (Pinecone, Weaviate, pgvector), microservices, cloud (AWS/GCP/Azure), Docker/Kubernetes, FastAPI/Asyncio, and PostgreSQL.
Python, Pinecone, Weaviate, pgvector, Docker, Kubernetes, FastAPI, Asyncio, PostgreSQL, Claude, Cursor, GitHub Copilot, React, TypeScript, AWS, GCP, Azure, LLMs, RESTful APIs, IAM, SSO, SAML, OAuth, OIDC, RBAC
1mo
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Senior Software Engineer, Engine & Distributed Systems
San Francisco or New York City
$220k-$240k/yr HybridFull Time
5+ YOE5+ years building backend distributed systems; experience with durable execution/workflow orchestration (Temporal, Cadence, Airflow), strong Python and FastAPI skills, Postgres familiarity, concurrency, fault tolerance, and recovery.
Temporal, Cadence, Airflow, Python, FastAPI, Postgres, PydanticAI, LangGraph
1mo
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Senior Software Engineer - Full Stack, Technical Lead
San Francisco, California, United States
$200k-$250k/yr HybridFull Time
5+ YOE5+ years full-stack experience; advanced Python; frontend with React and TypeScript; backend experience with GraphQL/FastAPI; Postgres and AWS familiarity; proven technical project leadership and mentorship.
Python 3, GraphQL, FastAPI, React, TypeScript, Postgres, AWS
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