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113 ai application engineer jobs at 90 companies in Fairfield, CA

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Founding Machine Learning / AI Search Engineer
Cupertino, CA, US
$160k-$310k/yr On-SiteFull Time
HiringCafe
HiringCafe: Building a 100× better job search engine to take on Indeed and LinkedIn.
Build the ML and AI search behind HiringCafe — ranking, recommenders, retrieval, and LLM agents that surface jobs people would never find on their own.
Python, PyTorch, Elasticsearch, LLMs
Help us #BeatIndeed & #BeatLinkedIn
2mo
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AI Application Security Engineer
San Francisco, California, United States
HybridFull Time
Brain Co.
Brain Co.: Builds AI software platforms for governments and large enterprises.
5+ YOE5+ years in application or product security; hands-on security tooling and coding; strong knowledge of application security fundamentals; experience with AI-enabled security.
Python, Go, TypeScript, SAST/DAST tooling
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3w
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Application Engineer, AI/ML
San Francisco or Cambridge
$120k-$140k/yr HybridFull Time
Lumafield
Lumafield: Accessible industrial CT scanners and cloud-based analysis software
4+ YOE4+ years building applied computer vision/ML for image or volumetric data, production deployment (MLOps), customer-facing experience, ability to scope and deliver ML solutions, and willingness to travel ~30%.
MLOps, MES, SPC, PLM, CT, AI/ML
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1mo
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Staff AI Application Engineer, Product
San Francisco or Seoul
$220k-$240k/yr HybridFull Time
Twelve Labs
Twelve Labs: AI foundation models for video search and human-like understanding.
Strong backend engineering in Python or Go, system design and 0→1 internal product experience, experience with large unstructured datasets, full-stack capability, and familiarity with cloud data platforms, data governance, and access control.
Python, Go, Claude Code
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2mo
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Robotics Application Engineer
Pittsburgh or San Mateo
$100k-$300k/yr HybridFull Time
Skild AI: A robotics focused on building advanced robotic intelligence and deploying robotic systems.
3+ YOE3–5+ years robotics application development; BS/MS in CS/Robotics or related; Python and C++; ROS/ROS2; AI/ML for robotics; autonomous systems experience.
Python, C++, ROS/ROS2, AI/ML
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1mo
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Product Application Engineer
Newark, California, United States
$135k-$165k/yr OnsiteFull Time
Unigen
Unigen: Manufactures custom memory, storage, and AI electronic hardware solutions.
3+ YOEBachelor's in Electrical Engineering (Master's preferred), 3+ years product application experience, subject matter knowledge in memory, storage and AI; strong analytical, communication, and cross-functional problem-solving skills.
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4w
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Staff AI Engineer
Miami or New York or San Francisco or Mexico City or United States
RemoteFull Time
Félix Pago
Félix Pago: Remittance platform for money transfers via WhatsApp messaging.
8+ YOE8+ years software engineering experience with infrastructure and systems development; 2+ years building production LLM/AI applications; strong Python, system architecture, containerization (Docker/Kubernetes), CI/CD, observability, RAG and agentic systems experience.
Python, Docker, Kubernetes, CI/CD, LLM APIs, LLMOps, RAG, vector databases, Open CLAW, Hermes, WhatsApp
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4w
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Staff Application Security Engineer
San Francisco or United States
$240k-$300k/yr HybridFull Time
Brex
Brex: Corporate cards and spend management software for businesses.
8+ YOE8+ years in application/product security or related software engineering; technical leadership and mentorship experience; expertise in AI security, threat modeling, cloud-native container security (AWS, Kubernetes); proficiency in Python/Go; strong communication skills.
Python, Go, Kotlin, gRPC, GraphQL, Kubernetes, AWS, LLM
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2mo
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AI Engineer
San Francisco, California, United States
$150k-$210k/yr OnsiteFull Time
Cargomatic
Cargomatic: Digital marketplace connecting shippers with local trucking capacity.
3+ YOE3+ years software engineering with focus on AI/ML or automation; hands-on AI-powered applications; experience with agentic AI concepts, LLMs, and modern AI frameworks; cloud infrastructure (AWS); backend (Node.js); frontend (React).
Claude, OpenAI, LangChain, n8n, AWS, Node.js, React, MongoDB, PostgreSQL, MySQL, S3, ECS, Lambda, REST APIs, GitHub
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1mo
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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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1w
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Lead Application Security Engineer
San Francisco, California, United States
$140k-$180k/yr RemoteFull Time
Zeta Global
Zeta GlobalNYSE: ZETA: Provides an AI-powered marketing platform for enterprise customer engagement.
5+ YOEBachelor's or equivalent,5+ years application security experience,knowledge of OWASP and threat modeling,AI/ML security familiarity,cloud and container experience,experience with security automation and tooling.
React, Node.js, Django, FastAPI, OAuth2, OIDC, JWT, AWS, GCP, Azure, Docker, Kubernetes, Semgrep, SonarQube, Burp Suite, OWASP ZAP, Trivy, Snyk, GitHub Advanced Security
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1mo
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Application Engineer
Petaluma or California
$98k-$146k/yr HybridFull Time
Amy's Kitchen
Amy's Kitchen: Family-owned producer of organic, vegetarian, and non-GMO frozen meals.
2+ YOE2+ years data engineering experience; proficiency with Azure Data Factory, Azure Synapse, Databricks, SQL/PL/SQL, Power BI, ETL/ELT, Azure DevOps, Git; experience with AI/ML model integration preferred; bachelor's in CS or equivalent preferred.
Azure Data Factory, Azure Synapse, Databricks, SQL, PL/SQL, Power BI, Oracle BI, DAX, Power Query (M), Azure DevOps, Git, SVN, Azure AI, Azure OpenAI, Copilot, Azure SQL, Oracle EBS, OBIEE, bash, PowerShell
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5h
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Applied AI Engineer, GTM Growth Engineering
San Francisco, California, United States
$230k-$385k/yr OnsiteFull Time
OpenAI
OpenAI: Develops artificial intelligence models and generative AI software services.
4+ YOE4+ years building reliable production systems, experience with AI agents/LLM applications, evaluation and experimentation, strong backend engineering (Python, APIs, data pipelines), and cross-functional collaboration.
Python, APIs, CRM
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1mo
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Temporary Financial Application Developer
California or New York City or Boston or San Francisco or Washington, D.C. or Seattle or Santa Monica
$115k-$173k/yr HybridFull Time, Temporary
Fenwick & West
Fenwick & West: Legal services for technology and life sciences companies.
5+ YOE5+ years supporting and developing financial applications, experience with application development (UI, middle tier, stored procedures), SQL, Microsoft Windows support, APIs, automation and AI/ML familiarity; Bachelor's in CS/IS or equivalent experience.
Microsoft Windows, SQL, APIs, AI services, AI/ML frameworks
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2w
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Senior Security Application Engineer
San Francisco, California, United States
$200k-$235k/yr OnsiteFull Time
BitGo
BitGoNYSE: BTGO: Provides secure infrastructure for institutional digital asset management.
8+ YOE8+ years building and scaling security programs; experience with cloud security, Kubernetes, Terraform, Python/Java, SOC 2/GDPR controls, and securing AI/ML lifecycles; Bachelor’s in a technical field required.
SAST, DAST, Terraform, Kubernetes, AWS, Python, Java, CI/CD, KMS, LLM
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1w
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AI Automation Engineer
California or Illinois or Texas or Massachusetts or Colorado or Connecticut or Maryland or New Jersey or Washington or Virginia or Alaska or San Francisco or New York City
$92k-$194k/yr OnsiteFull Time
Proofpoint: Provides cybersecurity solutions for email, cloud, and data protection.
8+ YOEBachelor's degree,8+ years professional experience with 2+ years focused on AI,proven AI application development,advanced prompt engineering,Python,enterprise orchestration and LLM platform experience,knowledge of GTM post-sales systems.
Python, Amazon Quick Automate, UnifyApps, Anthropic, OpenAI, Amazon Bedrock, OpenAI Codex, Claude CoWork, MCP (Model Context Protocol), Salesforce, Gainsight, Totango, Clari, Gong, Pendo, Snowflake, Redshift, AWS, Microsoft Power BI, LLMs
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1mo
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Founding AI Engineer
San Francisco, California, United States
$150k-$300k/yr OnsiteFull Time
Thorin
Thorin: Building proactive AI agents for enterprise workflow automation.
Experience building production software, backend and frontend systems, APIs and distributed systems; familiarity with LLMs or AI applications; strong product judgment and ownership.
LLMs, APIs
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3mo
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Senior Application Security Engineer, AI and Machine Learning
San Francisco or Seattle
$180k-$220k/yr HybridFull Time
Lightning AI
Lightning AI: Unified platform to build, train, and deploy AI models.
Strong background in application security engineering; threat modeling and architecture reviews; cloud and container security; scripting in Python or Go; collaborate with engineering teams.
AWS, GCP, Azure, Kubernetes, Docker, Python, Go
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1mo
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Senior Application Security Engineer
United States or Canada or San Francisco or New York City or Seattle
$190k-$273k/yr RemoteFull Time
Apollo.io
Apollo.io: AI-powered platform for B2B sales intelligence and outreach automation.
5+ YOE5+ years software engineering or application security experience; strong coding skills (Ruby, Python), Linux and GCP familiarity, deep AppSec/vulnerability management, pen-testing and SAST experience, AI security, and strong communication.
Ruby, Python, Linux, GCP, SAST
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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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4w
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GTM AI Engineer
San Mateo, California, United States
$192k-$238k/yr HybridFull Time
Freshworks
FreshworksNASDAQ: FRSH: Provides cloud-based customer support and IT management software.
Experience building AI/LLM-powered applications, integrations across Salesforce/Marketo/CRM stacks, production-grade reliability, and GTM/revenue operations domain knowledge.
Salesforce, Marketo, Outreach, Clay, Relevance, Claude, Claude Code, OpenAI, GitHub, LangGraph, MCP
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