293 principal engineer jobs at 153 companies in Cotati, CA
5d
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Principal Engineer
San Francisco or Charlotte
$159k-$305k/yr HybridFull Time
7+ YOERequires 7+ years of engineering and software, platform, SRE, or distributed systems experience, with expertise in resilient scalable platforms, cloud technologies, Kubernetes/OpenShift, observability, automation, and technical leadership.
Kubernetes, OpenShift, GitHub Copilot, AIOps, Zelle, ACH, RTP, FedNow, CI/CD
2mo
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Principal Engineer, Hardware
South San Francisco or Atlanta
$275k-$350k/yr OnsiteFull Time
15+ YOE15+ years hardware engineering, system-level ownership, DFM/supplier qualification, field reliability, ISO 26262 familiarity preferred.
3mo
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Principal Engineer
San Francisco, California, United States
$285k-$315k/yr HybridFull Time
10+ YOE10+ years software experience; strong architecture leader; experience with large-scale distributed SaaS; AI product experience; cross-functional collaboration.
TypeScript, React, Node.js, Java, Docker, Kubernetes, Google Cloud Platform
1mo
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Principal Environmental Engineer
San Diego or Concord or Knoxville or Denver or Norfolk or Canton
$175k-$225k/yr RemoteFull Time
15+ YOEMaster's in Environmental Engineering, PE license, 15+ years environmental engineering experience (DoD/CERCLA), leadership experience on federal remediation projects, ability to travel, strong verbal and written communication.
1mo
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Transportation Principal Engineer
Walnut Creek, California, United States
$180k-$260k/yr HybridFull Time
15+ YOEBachelor's in Civil or Structural Engineering, PE license, 15+ years transportation engineering experience, proficiency with AutoCAD and Civil3D, project scoping/budgeting, and business development; pre-employment background and drug screen required.
AutoCAD, Civil3D
2w
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Principal Engineer, Online Systems
San Francisco or Palo Alto
$285k-$500k/yr HybridFull Time
12+ YOE12+ years of software engineering experience with distributed systems expertise; proficiency in C++, Java, or Python; technical strategy and cross-functional leadership; bachelor's degree or equivalent experience.
C++, Java, Python, Kubernetes
1w
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Senior Principal Engineer
San Francisco, California, United States
$202k-$318k/yr HybridFull Time
12+ YOE12+ years technical leadership with end-to-end ownership; deep expertise building large-scale systems; hands-on coding; strong judgment on cost/scale; experience influencing leaders and defining technical direction.
2mo
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Principal Engineer - Stablecoin
Jersey City or Seattle or Plano or San Francisco or Charlotte
$157k-$230k/yr HybridFull Time
Experience designing and building secure, scalable financial blockchain apps and smart contracts; multi-cloud, multi-region; cloud providers (AWS, GCP, Azure); web3 protocols; Solidity/Rust; cryptography; DeFi; code reviews and security analysis; integration with external systems.
Solidity, Rust, Web3, Truffle, Hardhat, Remix, Web3.js, Ethers.js, Terraform, AWS, GCP, Azure
1mo
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Lead Principal Firmware Engineer
Nashville or United States or San Francisco or Austin or Seattle
$146k-$306k/yr OnsiteFull Time
10+ YOE10+ years firmware engineering experience; hands-on BIOS/BMC/UEFI firmware; knowledge of secure boot/TPM, server firmware stacks and standards; strong communication and cross-team leadership skills.
EDKII, OpenBMC, Redfish, IPMI, PLDM, UEFI, ACPI, PCIe
2mo
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Principal Engineer
San Francisco or New York City or United States
$148k-$210k/yr RemoteFull Time
8+ YOE8+ years software engineering experience; deep full‑stack experience with Ruby on Rails and frontend React; Node.js/JavaScript/TypeScript, AWS, MySQL, Elasticsearch, Redis, Resque; strong CS fundamentals, architecture, mentorship, and cross‑functional communication.
Ruby on Rails, React, Node.js, JavaScript, TypeScript, AWS, MySQL, Elasticsearch, Redis, Resque, Go, Python, Java
2mo
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Principal Software Engineer
San Francisco, California, United States
RemoteFull Time
15+ YOE15+ years in distributed systems/infra; Go or Python; Kubernetes and Terraform; incident commander; cloud migrations; OpenTelemetry; Azure/AKS; on-call leadership.
Go, Python, Kubernetes, Terraform, AKS, Azure DevOps, GitHub Actions, OpenTelemetry
1mo
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Chief Engineer (Principal Engineer)
San Francisco, California, United States
$335k-$375k/yr OnsiteFull Time
Principal-level engineer with strong production systems experience, deep AI/agent fluency, 0→1 and scale experience, BS/BA in Computer Science required (MS/PhD preferred), San Francisco onsite commitment.
Claude Code, Cursor
6d
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Distinguished Principal Engineer - AI Science
San Francisco, California, United States
$225k-$250k/yr OnsiteFull Time
10+ YOE10+ years data science/ML experience, 3+ years technical lead, expert in ML theory and optimization, strong coding in Python/Scala/Java/R and SQL, quantitative degree (BS/MS/PhD).
Python, Scala, Java, R, SQL
2mo
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Principal AI Platform Engineer
San Francisco or Toronto or Montreal or United States or Canada
RemoteFull Time
10+ YOE10+ years software engineering experience, 3+ years building ML/LLM systems, strong Python backend skills, platform engineering and developer-experience experience, technical leadership at Principal level.
Python, MCP, LangGraph, LlamaIndex, Langfuse, LangSmith, Braintrust
2mo
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Principal Quality Engineer
Alameda, California, United States
$150k-$195k/yr OnsiteFull Time
7+ YOEBachelor's degree in Engineering; 7+ years in Quality/Manufacturing Engineering in medical devices; Lean/Six Sigma experience; strong data analytics and cross-functional leadership.
statistical analysis, DOE, Six Sigma, Quality Management System (QMS), FDA QSR, ISO 13485
1mo
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Principal Security Engineer
San Francisco or California
$319k-$479k/yr RemoteFull Time
10+ YOE10+ years developing production software, 5+ years focused on scaling security practices, technical leadership at principal level, strong system design, security expertise, and ability to write production-quality security automation code.
2mo
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Principal Forward Deployed Engineer
Bellevue or Chicago or San Francisco or Toronto
$269k-$369k/yr RemoteFull Time
10+ YOE10+ years in production software with distributed systems and identity; expertise in OAuth 2.0/OIDC/SAML, agent security, fine-grained authorization; proven AI hands-on; strong customer-facing authority; independent, founder’s mindset.
OAuth, OIDC, SAML, SCIM, OPA, Cedar, OpenFGA, MCP, A2A, ISO/IEC 42001, EU AI Act
3mo
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Principal Data Engineer
San Francisco, California, United States
$207k-$276k/yr HybridFull Time
15+ YOE15+ years in software, FinTech, leading cross-functional teams; expert in data engineering, SDLC, cloud, and architectures; hands-on with Java, microservices, big data, and CI/CD.
Java, Spring, Microservices, Kafka, Oracle, SQL, JavaScript, Python, Hadoop/S3, Spark, TensorFlow, PyTorch, CI/CD, Git, Jenkins, Terraform, AWS, GCP, Azure, Jira, Confluence
6h
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Mechanical Principal
San Francisco or Walnut Creek
$160k-$200k/yr OnsiteFull Time
15+ YOEBachelor's degree in HVAC or mechanical engineering, 15+ years of building HVAC and piping design experience, project management, multidisciplinary leadership, Revit MEP proficiency, and advanced mechanical systems expertise.
Revit MEP, HVAC, MEP, FP, RFP, RFQ, UPS, HEPA, DX, QA/QC, CHW, HW, WSHP
2mo
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Principal Software Engineer, Data
Cambridge or San Francisco
$204k-$348k/yr HybridFull Time
8+ YOE8-15 years of backend-focused engineering; full stack experience; AWS, Kubernetes; API design; data pipelines; Python; collaboration with scientists and engineers.
React, TypeScript, Nx, Tailwind, FastAPI, SQL/NoSQL, Python, Pydantic, SQLAlchemy, SQLModel, Django, Airflow, Prefect, Temporal, Dagster, pandas, numpy, scipy, jax, pytorch, AWS, Kubernetes, Terraform, CloudFormation, GitHub Actions
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