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443 principal engineer jobs at 197 companies in Fairfield, CA

2mo
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Principal Engineer
Sacramento, California, United States
$127k-$158k/yr RemoteFull Time
Wood Rodgers
Wood Rodgers: Provides multidisciplinary engineering, planning, and surveying services for infrastructure.
15+ YOE5+ MgmtSenior geotechnical engineer with 15+ years, CA PE license, BS in Civil Engineering/Geology, MS in Geotechnical Engineering/Geology preferred, strong project/client management, field investigations, and technical reporting.
Geotechnical analysis software, Seepage analysis, Slope stability analysis, Seismic hazard assessment, Liquefaction, Settlement, Pavement design, Deep foundations
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2mo
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Principal Engineer, Hardware
South San Francisco or Atlanta
$275k-$350k/yr OnsiteFull Time
AeroVect
AeroVect: Develops autonomous driving software for airport logistics vehicles.
15+ YOE15+ years hardware engineering, system-level ownership, DFM/supplier qualification, field reliability, ISO 26262 familiarity preferred.
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3mo
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Principal Engineer
San Francisco, California, United States
$285k-$315k/yr HybridFull Time
Ironclad
Ironclad: AI platform for digital contract lifecycle management
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
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Transportation Principal Engineer
Walnut Creek, California, United States
$180k-$260k/yr HybridFull Time
CONSOR Engineers
CONSOR Engineers: Provider of infrastructure engineering and construction management services.
15+ YOEBachelor's degree in civil or structural engineering, 15 years of transportation engineering experience, Professional Engineer license, and AutoCAD and Civil3D proficiency.
AutoCAD, Civil3D
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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
APTIM
APTIM: Provides environmental, resilience, and infrastructure engineering solutions.
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.
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2w
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Principal Engineer, Online Systems
San Francisco or Palo Alto
$285k-$500k/yr HybridFull Time
Pinterest
PinterestNYSE: PINS: Visual discovery engine for finding and saving ideas.
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
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1w
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Senior Principal Engineer
San Francisco, California, United States
$202k-$318k/yr HybridFull Time
Atlassian
AtlassianNASDAQ: TEAM: Develops software for team collaboration and project management.
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.
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2mo
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Principal Engineer - Stablecoin
Jersey City or Seattle or Plano or San Francisco or Charlotte
$157k-$230k/yr HybridFull Time
Bank of America
Bank of AmericaNYSE: BAC: Provides global banking, investing, and financial risk management services.
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
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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
Oracle
OracleNYSE: ORCL: Provides cloud infrastructure and enterprise software for global businesses.
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
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1mo
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Senior Associate Principal Engineer
Union City, California, United States
$155k-$175k/yr OnsiteFull Time
Southland Industries
Southland Industries: National expert in mechanical, electrical, and plumbing building systems.
10+ YOEPE license required, Bachelor's in Mechanical Engineering, ~10+ years mechanical design/construction experience, HVAC/plumbing system design knowledge, Revit/CADD/Microsoft Excel skills, strong communication and public speaking.
Revit, CADD, Microsoft Excel
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Principal Engineer
San Francisco or New York City or United States
$148k-$210k/yr RemoteFull Time
Fluxx
Fluxx: Cloud software for managing the end-to-end grantmaking lifecycle.
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
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Principal Software Engineer
San Francisco, California, United States
RemoteFull Time
DocuSign
DocuSignNASDAQ: DOCU: Provides electronic signature and agreement management software solutions.
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
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1mo
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Chief Engineer (Principal Engineer)
San Francisco, California, United States
$335k-$375k/yr OnsiteFull Time
interface.ai
interface.ai: AI-powered automation platform for banks and credit unions.
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
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1w
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Distinguished Principal Engineer - AI Science
San Francisco, California, United States
$225k-$250k/yr OnsiteFull Time
MSCI
MSCINYSE: MSCI: Provides critical decision support tools for the investment community.
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
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2mo
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Principal AI Platform Engineer
San Francisco or Toronto or Montreal or United States or Canada
RemoteFull Time
MaintainX
MaintainX: Provides mobile-first software for maintenance and asset management.
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
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2mo
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Principal Quality Engineer
Alameda, California, United States
$150k-$195k/yr OnsiteFull Time
Penumbra
PenumbraNYSE: PEN: Designs and manufactures medical devices for vascular conditions.
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
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1w
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Principal Engineer
Pleasanton, California, United States
$257k-$322k/yr HybridFull Time
BlackLine
BlackLineNASDAQ: BL: Provides cloud-based financial close and accounting automation software.
Principal software engineering role requiring application architecture, cloud backend development, system scaling, troubleshooting, optimization, innovation, cross-team collaboration, and mentoring engineers.
cloud-based backend services
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1mo
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Principal Security Engineer
San Francisco or California
$319k-$479k/yr RemoteFull Time
Block
BlockNYSE: XYZ: Creates financial tools for businesses and individuals.
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.
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2mo
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Principal Mechanical Engineer (Robotics / Mechatronics for Fab Solutions)
Fremont, California, United States
$139k-$188k/yr HybridFull Time
Brooks Automation
Brooks Automation: Provides high-precision robotics and automation solutions for semiconductor manufacturing.
7+ YOEBachelor's or graduate degree in mechanical engineering; 7+ years in mechanical engineering; 3+ years in NPI; strong 3D CAD (Pro/E, SolidWorks); experience with robotics/automation; good communication; IP/patent knowledge is a plus.
ProE, SolidWorks, FEA, CFD, AutoCAD
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3mo
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Principal Model Optimization Engineer
San Mateo, California, United States
$295k-$345k/yr HybridFull Time
Roblox
RobloxNYSE: RBLX: Platform for creating and playing user-generated 3D digital experiences.
6+ YOE6+ years in system design; GPU profiling; CUDA/Triton/TensorRT; ML model optimization for LLMs; Bachelor's in CS/CE/Data Science; collaboration skills.
CUDA, Triton, TensorRT
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