168 fastapi developer jobs at 114 companies in Los Altos, CA
5h
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Remote Backend Engineer (Python/FastAPI)
San Francisco or United States
$200-$300/hr RemoteContract
3+ YOE3+ years software engineering experience; strong Python and JavaScript skills; experience building and deploying production-grade systems; excellent communication and code-review ability.
Python, FastAPI, JavaScript, React, Node.js, C/C++, Java, Rust, Go
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
2w
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Senior Engineer
Santa Clara, California, United States
$120k-$150k/yr OnsiteFull Time
6+ YOEExpertise in Python or Java, full-stack development (Next.js/React/TypeScript), GraphQL and FastAPI backend, prompt engineering and GenAI tooling, cloud deployment on AWS/Azure, and bachelor's degree or equivalent.
Python, Java, Ariadne(GraphQL), appoloClientGraphQL, FastAPI, Next.js, React, TypeScript, Javascript, GitHub Copilot, Amazon Code Whisperer, GPT-4, Claude, Llama, AWS Lambda, S3, EC2, SageMaker, Azure Functions, Blob Storage, Azure OpenAI Service
2w
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Software Engineer
Hayward, California, United States
$112k-$162k/yr OnsiteFull Time
Master's in CS/CE or related required; no prior work experience required; demonstrated coursework or projects in HTML,CSS,JavaScript,TypeScript,Flask,FastAPI,React, algorithms, databases, and full-stack development.
LIMS, FastAPI, Flask, HTML, CSS, JavaScript, TypeScript, React
4w
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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
1mo
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Sr Product Engineer
Palo Alto or California
$180k-$250k/yr OnsiteFull Time
5+ YOE5+ years backend development experience; proficiency with Python, FastAPI, PostgreSQL; experience with LLM/ML products; comfortable owning frontend (React/TypeScript); BS/MS in CS or related; located in San Francisco Bay Area or willing to relocate.
Python, FastAPI, PostgreSQL, TypeScript, React, Claude Code, Codex, Cursor, MCP servers, LLMs, ML, AWS, Supabase, LaunchDarkly, Betterstack
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
1mo
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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
5d
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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
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
3mo
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Product Engineer
San Francisco or New York
OnsiteFull Time
Build AI-native applications end-to-end using React/TypeScript, Python, FastAPI, and Postgres; ship features with observability and real customer impact. Strong experience with at least one LLM API and RAG mindset.
React, TypeScript, Python, FastAPI, PostgreSQL, LLM API
3d
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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
1w
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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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Product Engineer
Sunnyvale, California, United States
$150k-$250k/yr OnsiteFull Time
Proven full-stack/product engineering experience building user-facing SaaS features using Python (FastAPI) and modern frontend frameworks, async/distributed systems (Celery, Redis), SQL/NoSQL, comprehensive testing, and CI/CD. Bachelor's degree required.
Python, FastAPI, React, Next.js, Celery, Redis, SQL, NoSQL
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
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