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209 ai modeling engineer jobs at 153 companies in Fairfield, CA

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AI Performance Modeling Engineer
Burlingame, California, United States
$150k-$200k/yr HybridFull Time
Quadric
Quadric: Designing licensable processor IP for on-device AI inference.
Strong Python and quantitative modeling skills; computer architecture knowledge; technical writing ability; AI inference or technical performance modeling depth; BS, MS, PhD, or equivalent practical experience.
Python, C++, CUDA, Triton, gem5, Timeloop, MAESTRO, Accel-Sim, instruction-set simulator
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3w
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Applied AI Engineer
San Francisco, California, United States
HybridFull Time
Abby Care
Abby Care: Trains and pays family members to provide home care.
2+ YOE2+ years professional software/ML or applied AI experience, strong software engineering, experience with language models/AI APIs, backend and data pipeline skills, ability to evaluate models and work with healthcare workflows.
Python
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3mo
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Lead AI Engineer
San Francisco, California, United States
$300k-$400k/yr HybridFull Time
Noon
Noon: A building AI-powered design tooling.
5+ YOE5+ yrs software engineering; 2+ yrs ML model training/deploy; NLP/LLMs; data pipelines; model optimizations; agentic AI systems; end-to-end ownership
NLP, LLMs, data pipelines, quantization, distillation, LoRA, pruning, agentic systems
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2mo
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Applied AI Engineer
San Francisco, California, United States
$171k-$242k/yr HybridFull Time
Artos
Artos: AI-powered document authoring platform for life sciences R&D.
2+ YOE2+ years building and deploying AI/ML applications, hands-on LLM experience, backend engineering with Python, API development (FastAPI/Django), cloud container deployment, R&D on model capabilities, and evaluation tooling experience.
Langfuse, LangSmith, FastAPI, Django, AWS, GCP, Azure, Terraform, Pulumi, GitHub Actions, React, Python, OpenAI, Anthropic, Google
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2mo
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Senior AI/ML Engineer
New York City or San Francisco or London or Sydney
$240k-$270k/yr OnsiteFull Time
Sigma Computing
Sigma Computing: Cloud-native analytics platform featuring a spreadsheet-style interface.
10+ YOEBachelor's in CS/Engineering/Mathematics, 10+ years building and deploying production AI/ML systems, expertise in ML/DL, full ML lifecycle experience, foundation-model adaptation experience.
SQL, Python, AWS, GCP, Azure
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1w
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Founding AI Engineer
San Francisco, California, United States
$225k-$255k/yr OnsiteFull Time
Clera
Clera: AI talent agent matching professionals with high-growth startup roles
8+ YOE8+ years engineering experience with recent production LLM ownership, experience building evals/observability, proficiency with typed ontologies (Pydantic), routing across model providers, and ability to explain systems to stakeholders; must be authorized to work in the US.
Anthropic, Pydantic, MCP, LangChain, LlamaIndex, Braintrust, OpenRouter
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2mo
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AI Field Engineer - AI Natives
San Mateo, California, United States
FieldFull Time
Fireworks AI
Fireworks AI: Provides high-performance generative AI model inference and deployment infrastructure.
5+ YOE5+ years in customer-facing technical engineering roles, strong Python and Kubernetes skills, experience with LLM inference, model serving and fine-tuning, cloud GPU deployment across major clouds, and exceptional communication.
Python, Kubernetes, vLLM, SGLang, TensorRT-LLM, AWS, Microsoft Azure, GCP, Azure AI Foundry, AWS Bedrock, SageMaker, GCP Vertex
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1mo
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Senior AI Engineer
San Francisco or New York City or Vancouver or Amsterdam or London or Paris or Singapore or Tokyo or Colorado or California or Washington
$211k-$316k/yr HybridFull Time
Amplitude
AmplitudeNasdaq: AMPL: Develops digital analytics software for tracking customer product behavior.
3+ YOE3+ years software engineering (2+ years building production LLM/applied AI), experience designing/scaling AI products and platforms, familiarity with model APIs/agents/retrieval/evals, strong product sense and communication.
model APIs, agent frameworks, evals, retrieval, prompting
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1mo
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AI Engineer, Product
San Francisco, California, United States
$171k-$240k/yr HybridFull Time
Brex
Brex: Corporate cards and spend management software for businesses.
Proven track record shipping customer-facing features end-to-end across backend and frontend; strong backend foundation (system design, data modeling, API); product mindset and comfort with ambiguity; experience with LLMs/agentic systems a plus.
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2w
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Senior AI Research Engineer
San Francisco or Atlanta
$250k-$300k/yr HybridFull Time
ZeroRFI
ZeroRFI: AI-powered intelligence platform for the built environment.
3+ YOEMaster's/PhD or equivalent, 3+ years building and deploying ML models, deep learning and computer vision expertise, strong software engineering and MLOps experience.
PyTorch, Python, NumPy, SciPy, scikit-learn, Open3D, trimesh, AWS SageMaker, Vertex AI, Azure ML, Weights & Biases, MLflow, Docker, Kubernetes, Revit, Rhino/Grasshopper, YOLO, SAM, NeRF, PyTorch Geometric, DGL, Mujoco, Isaac Sim, PointNet++, DGCNN
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3mo
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AI Engineer (AI Accelerator Program)
San Francisco, California, United States
$130k-$165k/yr HybridFull Time
University of California, San Francisco
University of California, San Francisco: Public research university dedicated to health sciences and education.
5+ YOEBachelor's degree or related experience; 5+ years in AI/ML, data analysis, Python, SQL; experience deploying ML models and APIs.
Python, SQL, Jupyter, Pandas, Scikit-learn, PyTorch, APIs, Microservices, React, JavaScript, TypeScript, MLOps, CI/CD, Cloud
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2mo
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Applied AI Engineer
San Francisco, California, United States
$200k-$300k/yr OnsiteFull Time
Salient
Salient: Automates loan servicing and financial operations using agentic AI
3+ YOEBuild production speech models, post-train LLMs for voice agents, develop evals and monitoring, own end-to-end systems.
ASR, TTS, Speech Modeling, LLM Post-Training, Model Evaluation, Data and Infra Tools
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3mo
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Senior Applied AI Engineer
San Francisco, California, United States
OnsiteFull Time
Alterion
Alterion: Building a control plane for enterprise AI agents.
5+ YOE5+ years in software/ML engineering; strong Python; production services; LLMs experience; model evaluation and monitoring; PyTorch or similar.
Python, PyTorch, LLMs, Machine Learning Pipelines, APIs
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2mo
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AI Engineer (AI Accelerator Program)
San Francisco, California, United States
HybridFull Time
UCSF Health
UCSF Health: Academic medical center providing advanced patient care and research.
5+ YOEBachelor's or equivalent, 5+ years building and deploying AI/ML systems, advanced Python and SQL, experience with data pipelines, model deployment, APIs, LLMs, and cloud platforms (GCP/AWS/Azure).
Python, Jupyter, Pandas, scikit-learn, Numpy/Scipy, PyTorch, SQLServer, PostgreSQL, GCP, AWS, Azure, React, JavaScript/TypeScript, Tableau, Epic Clarity
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3w
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AI Engineer
San Francisco, California, United States
OnsiteFull Time
Corridor
Corridor: Secures software codebases using AI-powered autonomous vulnerability detection.
2+ YOE2+ years industry or research experience in software engineering/ML, production-quality coding in Python, familiarity with ML frameworks, vector stores, hybrid search, and databases; experience with model fine-tuning and evaluation pipelines preferred.
Python, ML frameworks, vector stores, hybrid search, databases
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1mo
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AI Security & Control Engineer
London or San Francisco
£115k-£200k/yr OnsiteFull Time
Apollo Research
Apollo Research: Developing technical evaluations to detect and mitigate AI scheming risks.
5+ YOE5+ years hands-on security experience; threat modeling, red‑teaming, and attack design for software/AI systems; application/cloud/product security; able to read code, evaluate infra and controls, and produce clear security artifacts.
MITRE ATT&CK, SIEM, DLP, CSPM, CI/CD, Watcher, Claude Code, Cursor, Codex, AppSec
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1mo
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Senior Lead AI Engineer (GenAI Platform, Agentic Infrastructure)
New York or San Francisco or McLean or Cambridge or San Jose or Plano
$209k-$286k/yr OnsiteFull Time
Capital One
Capital OneNYSE: COF: Financial services offering credit cards, banking, and loans.
4+ YOEBachelor's in CS/AI/EE/CE +6 years or Master's +4 years; 6+ years programming with Python/Go/Scala/Java; experience deploying scalable AI on cloud; LLM, inference, similarity search, VectorDBs, guardrails, model evaluation, and optimization experience; leadership and research literacy.
Python, Go, Scala, Java, C++, C#, Golang, AWS Ultraclusters, Huggingface, VectorDBs, Nemo Guardrails, PyTorch, AWS, Google Cloud, Azure
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2mo
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AI Engineer
San Francisco, California, United States
$150k-$175k/yr OnsiteFull Time
Bazze
Bazze: AI-powered data marketplace for government and enterprise intelligence.
Design, implement, and fine-tune large language models; experience with Python, NLP, DL; large datasets; containerization/DevOps.
Python, Bash, R, Docker, Kubernetes, Git, HuggingFace Transformers, NLTK, Spacy
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2mo
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Applied AI Engineer
San Francisco, California, United States
$179k-$240k/yr OnsiteFull Time
Arcade
Arcade: Infrastructure for AI agents to securely interact with external applications.
5+ YOE5+ years software engineering with at least 2 years shipping production ML or applied‑AI systems; strong Python; LLM application depth; multi-tool/workflow design; scalable evals and statistics; comfortable with frontier models; hands-on shipping mindset.
Python
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1w
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AI Operations Engineer
Denver or San Francisco
$136k-$176k/yr RemoteFull Time
Virta Health
Virta Health: Reversing type 2 diabetes through virtual care and nutrition.
2+ YOE2+ years agentic AI and IT operations, 4 years technical program management, hands-on generative AI deployment, API/model orchestration, Python and C++ proficiency, MCP integration, and dashboarding with Sheets/SQL/Looker.
Google Gemini, OpenAI/ChatGPT Enterprise, Microsoft Copilot, Python, C++, Model Context Protocol (MCP), Sheets, SQL, Looker, Ashby, AWS
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