16 fastapi developer jobs at 10 companies in Winchester, CA
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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
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
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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Senior Software Engineer
Boston or Encinitas
$142k-$192k/yr OnsiteFull Time
5+ YOE5+ years experience building full-stack web applications; strong Python (Django/FastAPI), TypeScript/React, AWS, PostgreSQL, Docker, and CI/CD (Jenkins) experience; API design and mentoring skills; US citizenship or green card required.
Python, Django, FastAPI, TypeScript, React, PostgreSQL, AWS, Docker, Jenkins, Node/Express, Java/Spring
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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
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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Principal Software Engineer (Python)
Irvine or Oklahoma City or Sunrise or Oxford or Dallas or Austin
$155k-$180k/yr HybridFull Time
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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Senior Professional Software Engineer (Python)
Irvine or Oklahoma City or Sunrise or Oxford or Dallas or Austin
$129k-$165k/yr HybridFull Time
5+ YOEBachelor's or Master's in Computer Science/AI or related, 5+ years software engineering, expert Python/FastAPI, microservices, Snowflake/Databricks, cloud (GCP/AWS/Azure), Agile (Jira/Confluence), strong communication and mentoring skills.
Python, FastAPI, Snowflake, Databricks, GCP, AWS, Azure, Jira, Confluence, YAML
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Full Stack Engineer
Irvine, California, United States
$125k-$140k/yr OnsiteFull Time
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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Software Engineer
Boston or Encinitas
$124k-$168k/yr OnsiteFull Time
2+ YOE2+ years coding experience, bachelors or equivalent, experience with modern web stacks (Python/TypeScript/React), API design, SQL, cloud (AWS/Azure/GCP), Docker and CI/CD, strong communication and collaboration skills.
Python, Django, FastAPI, TypeScript, React, PostgreSQL, AWS, Node, Express, Java, Spring, SQL, Docker, Jenkins, Cursor, Claude Code
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Mid-Level AI Product / Creative-Tools Engineer
Santa Ana, California, United States
$120k-$155k/yr OnsiteFull Time
2–4 years production software engineering experience; strong React and TypeScript; modern React toolchain (Next.js or Vite); Node.js backend and relational DB knowledge; automated testing; fluency with agentic coding tools.
React, TypeScript, Next.js, Vite, Node.js, NestJS, Python, FastAPI, Claude Code, Codex, Cursor, Playwright, TanStack Query, Mantine, SSE, WebSockets
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Staff AI Platform & Reliability Engineer
Santa Ana, California, United States
$172k-$220k/yr OnsiteFull Time
Senior Python/GCP engineer to design and operate AI generation services, provider integrations, billing/usage metering, tenant security and platform reliability.
Python 3.12, FastAPI, Pydantic, asyncio, Cloud Run, Pub/Sub, Cloud Tasks, GCS, Firestore, Cloud SQL/Postgres, SQLAlchemy, Alembic, Terraform, IAM/OIDC, Secret Manager, CI/CD, NestJS, TypeScript, Claude Code, Codex, Cursor
2w
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Principal Engineer
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
Expertise in identity and access management, distributed systems, and AI/LLM integration; deep Python experience; cloud (AWS) and relational DB (PostgreSQL); strong communication and architecture ownership skills.
Python, FastAPI, PostgreSQL, AWS, Okta, Auth0, Entra ID/Azure AD, AWS Cognito, Anthropic, OpenAI, vector databases, SAML, OIDC, OAuth 2.0, RBAC/ABAC, MCP, LLMs
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Sr Machine Learning Engineer
Irvine, California, United States
$130k-$162k/yr HybridFull Time
3+ YOEBachelor's/Master's in CS/Engineering/Data Science, 3+ years ML engineering/MLOps experience, strong Python (pandas, PyTorch, scikit-learn, boto3) and SQL skills, AWS SageMaker and orchestration (Step Functions, Lambda, Airflow) experience, Docker and CI/CD experience.
Python, pandas, PyTorch, scikit-learn, boto3, SQL, SageMaker, Step Functions, Lambda, S3, IAM, ECR, Airflow (MWAA), Glue, Snowflake, Redshift, Athena, Docker, GitLab CI/CD, MLflow, Hydra/OmegaConf, FastAPI, PyMC, ArviZ, Terraform, Terragrunt, CloudFormation, CloudWatch, DataDog
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Sr Machine Learning Engineer
Irvine or Plano or Louisville
$130k-$162k/yr HybridFull Time
3+ YOEBachelor's degree, 3+ years ML engineering/MLOps or software engineering experience, strong Python (pandas, PyTorch, scikit-learn), AWS (SageMaker, Step Functions, Lambda, S3, IAM, ECR), Airflow/Glue, Docker, CI/CD, SQL; strong troubleshooting and collaboration skills.
Python, pandas, PyTorch, scikit-learn, boto3, SQL, SageMaker, Step Functions, Lambda, S3, IAM, ECR, Airflow, Glue, Snowflake, Redshift, Athena, Docker, GitLab CI/CD, MLflow, Hydra/OmegaConf, FastAPI, PyMC, ArviZ, Terraform, Terragrunt, CloudFormation, CloudWatch, DataDog, GitLab
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Senior Machine Learning Engineer
Costa Mesa, California, United States
OnsiteFull Time
Hands-on experience training and evaluating deep models for segmentation and detection (PyTorch); understanding vision transformers and 2D/3D data; strong Python skills.
Python, PyTorch, torchvision, Detectron2, MMDetection, Hugging Face Transformers, FastAPI, Docker, AWS
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10883 - Enterprise SAP Systems & AI Solutions Engineer
Irvine, California, United States
$103k-$159k/yr HybridFull Time
7+ YOE7+ years enterprise IT experience; functional SAP Finance/ERP knowledge; Python, AI, SQL, EMR/integration skills; strong analytical and communication abilities; bachelor's degree or equivalent.
SAP ERP, SuccessFactors, Python, Django, FastAPI, OpenAI, Anthropic Claude, Streamlit, Dash, React, SQL, RESTful APIs
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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
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