31 senior fastapi developer jobs at 16 companies in Simi Valley, CA
3mo
Save
Mark Applied
Hide
Senior Software Engineer, AI
El Segundo or United States
$153k-$170k/yr RemoteFull Time
7+ YOESenior software engineer with 7+ years of experience in Python/Typescript, AI agent frameworks, and production-grade systems.
Python, TypeScript, FastAPI, Docker, LangGraph, LangChain, CrewAI, LlamaIndex, Chroma, Milvus, Weaviate, Qdrant
1mo
Save
Mark Applied
Hide
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
2mo
Save
Mark Applied
Hide
Senior Software Engineer | Remote
Los Angeles or United States
RemoteFull Time
Senior full-stack engineer to lead frontend tooling, backend services, and cloud infrastructure for production AI integrations; strong JavaScript and Python skills, low-level language experience, media pipeline knowledge, observability and distributed systems expertise.
JavaScript, React, Vue, Angular, Python, C, C++, Rust, Zig, Next.js, FastAPI, Django, Flask, Docker, Kubernetes, PostgreSQL, MongoDB, Redis, Temporal, Airflow, Dagster, Kafka, RabbitMQ, ffmpeg, AWS, GCP, Azure
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
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
1w
Save
Mark Applied
Hide
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
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
2h
Save
Mark Applied
Hide
Senior Software Engineer, Enterprise Applications
Long Beach, California, United States
$135k-$267k/yr OnsiteFull Time
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
1w
Save
Mark Applied
Hide
Senior Principal Software Engineer - TS/SCI
Long Beach, California, United States
$198k-$297k/yr OnsiteFull Time
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
3w
Save
Mark Applied
Hide
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
1w
Save
Mark Applied
Hide
Senior Principal Software Engineer - TS/SCI
Long Beach, California, United States
$198k-$297k/yr OnsiteFull Time
15+ YOEBachelor's degree, 15+ years software experience (embedded and ground), active TS/SCI clearance and U.S. citizenship, proficiency in C/C++ and Python, RTOS and embedded Linux experience, hardware integration and RF comms experience.
VxWorks, embedded Linux, C, C++, python, CAN, CAN-FD, SpaceWire, UDP, TCP, FastAPI, Golang, Rust, Typescript, Angular, InfluxDB, PostgreSQL, Git, Kubernetes, OAuth
1mo
Save
Mark Applied
Hide
Sr. Principal Software Engineer (SW Modeler/Developer)
Redondo Beach, California, United States
$142k-$213k/yr OnsiteFull Time
8+ YOEU.S. Secret clearance required; STEM degree with significant experience (BSc+8/ MSc+6/ PhD+4); expertise in backend (Python) and frontend (React) development, CI/CD, software modeling, and mission‑critical ground systems.
Python, React JS, C, C++, Cameo, FastAPI, MongoDB, Kafka, Docker, AWS Lambda, DynamoDB, API Gateway, Angular, SQS, EFS, S3, CI/CD
1w
Save
Mark Applied
Hide
Staff Full Stack Engineer
Santa Monica or Brooklyn or New York City or United States
$190k-$220k/yr HybridFull Time
Senior full-stack engineer with strong backend/API skills, product instincts, AI tool fluency, and experience building data-heavy services and integrations.
APIs, Python, FastAPI, React, TypeScript, React Router, Remix, PostgreSQL, SQLAlchemy, GCP
2w
Save
Mark Applied
Hide
Senior Data Engineer
New York City or San Francisco or Los Angeles
$165k-$220k/yr HybridFull Time
5+ YOE5+ years data engineering experience, 3+ years PySpark and public cloud (AWS S3/EMR), strong Python and SQL, BS in CS/related or equivalent, experience with data modeling, pipelines, and on-call support.
S3, Apache Iceberg, EMR, PySpark, Dagster, Kubernetes, Clickhouse, PostgreSQL, FastAPI, Metabase, Python, SQL
2w
Save
Mark Applied
Hide
Full Stack Engineer
Los Angeles, California, United States
$89k-$136k/yr RemoteFull Time
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
1mo
Save
Mark Applied
Hide
Sr. Principal Software Engineer (SW Modeler/Developer)
Redondo Beach, California, United States
$142k-$213k/yr OnsiteFull Time
4+ YOEU.S. Secret clearance required, STEM degree (BS/MS/PhD) with relevant years experience, expertise in backend Python and front-end React JS, CI/CD experience, software modeling/design skills, and experience with cloud and mission-critical systems.
Python, React JS, C, C++, Cameo, FastAPI, MongoDB, Kafka, Docker, AWS Lambda, DynamoDB, API Gateway, Angular, SQS, EFS, S3
1w
Save
Mark Applied
Hide
AI Staff Engineer
Long Beach, California, United States
$106k-$183k/yr HybridFull Time
6+ YOEDesign and deploy enterprise AI solutions using LLMs, RAG, embeddings, prompt engineering, and agent frameworks; collaborate across data, security, and business teams; apply responsible AI practices.
Azure AI Services, Azure AI Foundry, Azure OpenAI, SharePoint, Microsoft 365, Teams, Confluence, Python, REST APIs, FastAPI, LangChain, Semantic Kernel, Databricks, Snowflake
2mo
Save
Mark Applied
Hide
Senior AI Engineering
Pasadena or New York City or Houston
$150k-$275k/yr OnsiteFull Time
10+ YOE10+ years in software/AI engineering, experience delivering production LLM/AI solutions, strong Python and cloud (Azure) skills, experience with ML/LLM frameworks, and fintech/regulatory domain knowledge.
Python, FastAPI, Flask, Azure OpenAI, Azure ML, Databricks, ADLS, Azure AI Search, OpenAI ChatGPT, OpenAI Codex, Anthropic Claude, Google Gemini, Microsoft Copilot, AWS Bedrock, Llama, Mistral, LangChain, LlamaIndex, Semantic Kernel, vector databases, model registries, CI/CD, MLOps, LLMOps
2w
Save
Mark Applied
Hide
Staff Software Engineer, Frameworks
Mountain View or Los Angeles or San Francisco
$210k-$250k/yr HybridFull Time
8+ YOE8+ years software engineering experience designing and operating secure, scalable authentication/authorization and distributed backend systems; experience with Kubernetes and cloud-native infrastructure; strong technical leadership and mentorship.
OAuth 2.0, OIDC, JWT, AWS Cognito, Python, FastAPI, Pydantic, PostgreSQL, Go, Kubernetes
2mo
Save
Mark Applied
Hide
Senior Platform Engineer, Data & AI Infrastructure
Durham or New York City or Los Angeles or Phoenix
$140k-$160k/yr HybridFull Time
4+ YOE4+ years of professional software engineering with backend focus; strong Python, cloud, and data tooling; experience with AI/LLM integration and security best practices.
Terraform, GitOps, Snowflake, Fivetran, DBT, Python, FastAPI, Docker, Kubernetes, OpenAI, Anthropic, Google Gemini, BigQuery, Dataform, Cloud Run, Compute Engine, Secret Manager, Artifact Registry, Cloud Build, Cloud Monitoring, IAM, Secret Management, ECR, CodePipeline, CI/CD
2w
Save
Mark Applied
Hide
Full Stack Engineer
Los Angeles, California, United States
$89k-$136k/yr RemoteFull Time
8+ YOE8+ years full‑stack experience; expert in Node.js, JavaScript, TypeScript, React; experience with microservices, gRPC, relational databases, Redis, AWS, Docker/Kubernetes; US work authorization required.
TypeScript, gRPC, React, GoLang, Redis, Memcached, MariaDB, MySQL, Postgres, RESTful APIs, Node.js, JavaScript, StoryBook, CSS/SASS, AWS, Docker, Kubernetes, GraphQL, Flask, FastAPI, Kafka, Python, Figma
1mo
Save
Mark Applied
Hide
Agentic AI Architect - Intelligence Engineering (West)
Denver or East Bay or Los Angeles or Orange County or Phoenix or Portland or Salt Lake City or San Diego or San Francisco or Seattle or Silicon Valley
$108k-$237k/yr HybridFull Time
5+ YOE5+ years software engineering experience with 2+ years on generative/agentic AI, multi-agent system design, RAG architectures, cloud AI platform deployment, Python proficiency, and strong communication skills.
Python, FastAPI, Flask, Lang Graph, Strands Agents SDK, OpenAI Agents SDK, Google ADK, LangSmith, Model Context Protocol (MCP), AWS Bedrock, Azure AI Foundry, OpenAI Service, GCP Vertex AI, Gemini, Databricks, Claude Code, Cursor, Kiro, RAGAS, DeepEval
Explore Jobs
Expand Your Job Search
Top Cities Near Simi Valley for Senior Fastapi Developer
- Senior Fastapi Developer jobs in Los Angeles, CA
- Senior Fastapi Developer jobs in Long Beach, CA
- Senior Fastapi Developer jobs in Oxnard, CA
- Senior Fastapi Developer jobs in Glendale, CA
- Senior Fastapi Developer jobs in Santa Clarita, CA
- Senior Fastapi Developer jobs in Lancaster, CA
- Senior Fastapi Developer jobs in Palmdale, CA
- Senior Fastapi Developer jobs in Torrance, CA
- Senior Fastapi Developer jobs in Pasadena, CA
- Senior Fastapi Developer jobs in Thousand Oaks, CA
- Senior Fastapi Developer jobs in El Monte, CA
- Senior Fastapi Developer jobs in Downey, CA
- Senior Fastapi Developer jobs in Inglewood, CA
- Senior Fastapi Developer jobs in Norwalk, CA
- Senior Fastapi Developer jobs in Burbank, CA
- Senior Fastapi Developer jobs in Compton, CA
- Senior Fastapi Developer jobs in South Gate, CA
- Senior Fastapi Developer jobs in Carson, CA
- Senior Fastapi Developer jobs in Santa Monica, CA
- Senior Fastapi Developer jobs in Hawthorne, CA