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72 fastapi developer jobs at 39 companies in Buena Park, CA

3mo
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Software Engineer, AI
El Segundo or United States
$131k-$150k/yr HybridFull Time
ImmunityBio
ImmunityBioNASDAQ: IBRX: Develops next-generation immunotherapies for cancer and infectious diseases.
3+ YOE3+ years in software development; Python and TypeScript; AI agent frameworks; Docker; FastAPI; production/MLOps experience; regulated environment preferred.
Python, TypeScript, LangGraph, LangChain, CrewAI, LlamaIndex, Docker, FastAPI
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1w
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Staff Software Engineer
El Segundo, California, United States
$150k-$240k/yr HybridFull Time
Circadia Health
Circadia Health: Develops contactless monitoring devices for continuous patient vitals tracking.
7+ YOERequires 7+ years shipping full-stack production software, strong Python, FastAPI, Pydantic, 3+ years React, AWS, databases, testing, integrations, customer experience, and technical ownership.
React, Python, FastAPI, Pydantic, PointClickCare, Homecare Homebase, WellSky, HL7 v2, FHIR, REST, SFTP, CDC, AWS, PyTest
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3d
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Software Engineer II
Glendale or New York City
$118k-$165k/yr HybridFull Time
The Walt Disney Company
The Walt Disney CompanyNYSE: DIS: Produces movies, operates theme parks, and provides streaming services.
3+ YOE3+ years building production ML backends and REST APIs; Python, PyTorch or TensorFlow, FastAPI or Flask, data processing, GitHub, Docker, and AWS/EKS. Bachelor's degree or equivalent experience required.
Python, PyTorch, GPU, MLflow, Weights & Biases, PySpark, Pandas, Databricks, GitHub, Docker, AWS, EKS, TensorFlow, Flask, Claude, GPT-4, FastAPI, LangChain, LangGraph, Datadog, Grafana, Conviva, Spark, Snowflake
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3d
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Software Engineer II
Glendale or New York City
$118k-$165k/yr HybridFull Time
The Walt Disney Company
The Walt Disney CompanyNYSE: DIS: Produces media content and operates global theme parks.
3+ YOE3+ years building production ML backends and REST APIs; Python, PyTorch or TensorFlow, FastAPI or Flask, MLflow or Weights & Biases, large-scale data processing, GitHub, Docker, and AWS/EKS required. Bachelor's degree required.
PyTorch, MLflow, FastAPI, Flask, Claude, GPT-4, Python, TensorFlow, Weights & Biases, PySpark, Pandas, Databricks, GitHub, Docker, AWS, EKS, LangChain, LangGraph, Datadog, Grafana, Conviva, Spark, Snowflake
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2mo
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Principal Software Engineer (Python)
Irvine or Oklahoma City or Sunrise or Oxford or Dallas or Austin
$155k-$180k/yr HybridFull Time
Cotality
Cotality: Provider of property intelligence, data, and analytics solutions.
10+ YOE10+ years professional software engineering experience; expert Python/FastAPI; semantic, graph, and RAG/Vector retrieval experience; cloud (GCP/AWS/Azure); leadership, TDD, and AI/LLM/SLM familiarity.
Git, Unix, Python, FastAPI, FastMCP, ADK, LLM, SLM, GraphRAG, Vector Databases, RAGAS, DeepEval, GCP, AWS, Azure
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1mo
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Senior Software Engineer - AI, CoCounsel International
Eagan or Frisco or New York City or Ann Arbor or San Francisco or Los Angeles or Irvine or McLean or Washington
$110k-$204k/yr HybridFull Time
Thomson Reuters
Thomson ReutersNASDAQ: TRI: Provides professional software, data, and news services globally.
4+ YOE4+ years backend engineering experience with Python, FastAPI, PostgreSQL, AWS; production agentic AI and LLM integration experience; strong debugging, architecture, and collaboration skills.
Python, FastAPI, PostgreSQL, AWS, OpenAI, Anthropic
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2mo
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Principal Software Engineer (Python)
Irvine or Oklahoma City or Sunrise or Oxford or Dallas or Austin
$155k-$180k/yr HybridFull Time
Cotality
Cotality: Provides property data, analytics, and workflow intelligence solutions.
10+ YOEMaster's or Bachelor's in CS/AI (required), 10+ years software engineering, expert Python/FastAPI, semantic/graph and RAG experience, cloud (GCP/AWS/Azure), Git/Unix, ADK, vector DBs, strong communication and leadership.
Git, Unix, Python, FastAPI, FastMCP, ADK, Vector Databases, GraphRAG, RAGAS, DeepEval, HyDE, GCP, AWS, Azure
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2mo
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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
Atria Health Institute
Atria Health Institute: Membership-based concierge practice providing preventive, precision-based medical care.
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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1mo
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Sr. Full Stack Engineer
Tempe or Burbank
$135k-$163k/yr HybridFull Time
Entertainment Partners: Provides payroll and workforce management for entertainment productions.
6+ YOE6+ years software engineering experience, strong Python (FastAPI), React.js/TypeScript, API and database expertise, CI/CD and cloud experience, LLM/AI integration, bachelor's degree or equivalent.
Python, FastAPI, React.js, TypeScript, PostgreSQL, MySQL, MongoDB, ORMs, GitHub Actions, Jenkins, Microsoft Azure DevOps, Docker, Kubernetes, AWS, Azure, OCI, OpenAI, Anthropic/Claude, LangChain, LangGraph, pgvector, Pinecone, Weaviate, WebSockets, SSE, JWT, OAuth2
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1mo
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Full Stack Engineer
Irvine, California, United States
$125k-$140k/yr OnsiteFull Time
ICEYE
ICEYE: Operates synthetic aperture radar (SAR) satellite constellations.
2+ YOEBachelor's degree in CS/IT, 2+ years full‑stack development with production AWS deployments; proficiency in Go, FastAPI, React, and experience with RESTful APIs and cloud-native patterns; eligible for Top Secret clearance.
Go, Python, React, FastAPI, AWS, Kubernetes, AWS CDK, Terraform, JavaScript, TypeScript, IAM, API Gateway, Lambda, DynamoDB
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1w
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Software Engineer, Simulation
Hawthorne, California, United States
$125k-$195k/yr OnsiteFull Time
SpaceX
SpaceX: Designs and launches advanced rockets and satellite internet constellations.
2+ YOEBachelor's degree in computer science, engineering, math, or STEM, or 5+ years of software experience; 2+ years developing in C++, Python, or object-oriented languages.
C++, Python, OpenFOAM, ANSYS Fluent, COMSOL Multiphysics, NX, ANSYS Meshing, SnappyHexMesh, ParaView, VisIt, Tecplot, Three.js, Flask, SQLAlchemy, FastAPI, React, JavaScript, PostgreSQL, SQL Server, Linux, OpenFOAM, CFD
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1w
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Senior Software Engineer
Burbank, California, United States
$170k-$200k/yr HybridFull Time
Deluxe
Deluxe: Provides global media production, localization, and content distribution services.
5+ YOERequires 5+ years of software engineering experience, strong Python and backend/API development skills, AI/ML integration experience, testing and CI/CD proficiency, and knowledge of asynchronous programming and microservices.
Python, FastAPI, Flask, Django, REST APIs, OpenAI, LangChain, Hugging Face, AWS Bedrock, Vertex AI, NLP, OCR, RPA, CI/CD, Temporal, Step Functions, Airflow, AWS, GCP, Azure
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3w
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Senior Software Engineer, Enterprise Applications
Long Beach, California, United States
$135k-$267k/yr OnsiteFull Time
Vast
Vast: Develops and operates commercial artificial-gravity space stations.
6+ YOEBachelor’s degree or equivalent experience, 6+ years of software development, and experience building, shipping, and supporting complex data-intensive full-stack applications.
React, Vue, GraphQL, Node.js, OAuth, Terraform, FastAPI, PostgreSQL, MySQL, SQL Server
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1mo
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Full Stack Engineer
Los Angeles, California, United States
$89k-$136k/yr RemoteFull Time
Publicis Groupe
Publicis GroupeEuronext Paris: PUB: Global communications, advertising, and digital transformation holding.
8+ YOE8+ years full-stack web development experience; expert in Node.js, JavaScript, TypeScript; React and StoryBook; Redis/Memcached and relational DBs; gRPC/REST; AWS and Docker/Kubernetes; US work authorization required.
Node.js, JavaScript, TypeScript, React, StoryBook, CSS/SASS, Redis, Memcached, MariaDB, MySQL, Postgres, gRPC, GoLang, GraphQL, Figma, Python, Flask, FastAPI, Kafka, AWS, Docker, Kubernetes
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1d
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Senior Full Stack Engineer
El Segundo, California, United States
$157k-$190k/yr RemoteFull Time
Sphinx Defense
Sphinx Defense: Develops software for secure satellite and space mission operations.
5+ YOERequires 5+ years of web development experience, JavaScript/TypeScript, React or Svelte, backend integration, Docker/Kubernetes, secure government-network deployment, and eligibility for TS/SCI access.
FastAPI, SQLAlchemy, PostgREST, Svelte, React, CesiumJS, Python, Javascript, Typescript, CSS, Kubernetes, Docker, HTML, Docker, CSP, OMS, UCI, OCI
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6d
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GenAI/Python Senior Engineer
Los Angeles, California, United States
$90k-$130k/yr OnsiteFull Time
Tata Consultancy Services
Tata Consultancy ServicesNational Stock Exchange of India: TCS: Global provider of IT services, consulting, and business solutions.
5+ YOERequires 5+ years of advanced Python development, 1.5+ years building production GenAI/LLM applications, agentic AI, RAG, APIs, SQL, cloud experience, and strong communication skills.
Python, pytest, Git, Docker, OpenAI, Azure OpenAI, Anthropic, Bedrock, LangChain, LangGraph, LlamaIndex, Pydantic, pgvector, Pinecone, Weaviate, OpenSearch, Snowflake, FastAPI, Flask, Django, SQL, Azure, AWS, GCP, Confluence
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6d
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Staff Backend Engineer (Digital Foot Print)
United States or Canada or San Francisco or Los Angeles or New York City
$251k-$275k/yr HybridFull Time
Laurel
Laurel: AI-powered time tracking platform for professional services firms
6+ YOE6+ years of backend software development experience; strong TypeScript, Node.js, messaging queues, MongoDB, analytical skills, and customer collaboration. Bachelor's degree or equivalent practical experience.
TypeScript, Node.js, AWS SQS, MongoDB, Python, Django, FastAPI, Flask, Airflow, PostgreSQL, NestJS
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1mo
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Lead Software Systems Engineer
Seal Beach, California, United States
$172k-$232k/yr OnsiteFull Time
Boeing
BoeingNYSE: BA: Designing and manufacturing commercial aircraft and defense systems.
5+ YOEActive U.S. Top Secret/SCI required, Bachelor\u0002s degree or equivalent, 5+ years software development experience for space/ground systems, Python/JavaScript/TypeScript experience, CI/CD and database experience.
Python, JavaScript, Angular, JQuery, TypeScript, Postgres, SQL, NoSQL, Java, FastAPI, CI/CD
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1mo
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Lead Software Systems Engineer
Seal Beach, California, United States
$172k-$232k/yr OnsiteFull Time
Boeing
BoeingNYSE: BA: Designs and manufactures aircraft, defense systems, and space technology.
5+ YOE5+ MgmtActive U.S. Top Secret/SCI clearance, Bachelor’s degree, 5+ years software development experience (Python, JavaScript, TypeScript), CI/CD and database experience, leadership and systems engineering for space/ground systems.
Python, JavaScript, TypeScript, Angular, JQuery, FastAPI, Postgres, SQL, NoSQL, Java, CI/CD
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1mo
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Senior Principal Software Engineer - TS/SCI
Long Beach, California, United States
$198k-$297k/yr OnsiteFull Time
Rocket Lab
Rocket LabNasdaq: RKLB: Operates launch vehicles and manufactures satellites for space missions.
15+ YOE15+ years software development experience with embedded and ground systems, proficiency in C/C++ and Python, active TS/SCI clearance and U.S. eligibility, bachelor\u0019s degree in engineering or computer science required.
C, C++, python, VxWorks, embedded Linux, RTOS, DIO, AIO, ICD, RF, CAN/CAN-FD, SpaceWire, UDP/TCP, FastAPI, Golang, Rust, Typescript, Angular, InfluxDB, PostgreSQL, Git, Kubernetes, OAuth, CCSDS, Space Packet Protocol, COP-1, CFD, CI/CD
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