Principal Security Engineer Jobs in San Francisco Bay Area

34 open Principal Security Engineer jobs in San Francisco Bay Area at 23 companies, including Cisco, Salesforce and Palo Alto Networks. Updated daily from company career pages.

Cisco

Cisco develops, manufactures, and sells networking hardware, telecommunications equipment, and other technology services and products.

Salesforce

Datorama is a marketing intelligence platform that transforms the way marketers optimize their marketing performance.

Palo Alto Networks

Atlassian

Hewlett Packard Enterprise

Hewlett Packard Enterprise is an edge-to-cloud company that uses comprehensive solutions to accelerate business outcomes.

Zscaler

Zscaler is a global cloud-based information security company that enables secure digital transformation for mobile and cloud.

Qualcomm

Qualcomm designs, manufactures, and markets digital wireless telecommunications products and services.

Micron Technology

Micron Technology is a semiconductor company that produces DRAM, SDRAM, flash memory, SSD and CMOS image sensing chips.

IonQ

IONQ develops general-purpose quantum information processors to solve the world’s complex problems.

OpenAI

OpenAI is an AI research and deployment company that conducts research and implements machine learning.

SpaceX

SpaceX is an aviation and aerospace company that focuses on reducing the costs associated with space travel by using reusable rockets.

Datadog

Datadog offers monitoring and analytics for cloud-based workflows.

Freshworks

Freshworks is building and delivering online cloud-based software-as-a-service that provides helpdesk support with automation solutions.

Fastly

Fastly helps digital businesses keep pace with their customer expectations by delivering secure and online experiences.

Bank of Montreal

Bank of Montreal is a financial services provider of retail banking, wealth management, and investment banking products and solutions.

Lending Club

Lending Club is an online financial community that brings together creditworthy borrowers and savvy investors.

Axon

Axon provides electronic control devices to law enforcement and corrections agencies.

Zoox

Zoox is an AI robotics company that provides mobility as-a-service and self-driving car services.

Bloom Energy

Bloom Energy offers on-site power generation systems that can use a wide variety of inputs to generate electricity.

Ankura

Ankura Consulting Group is a business advisory and expert services firm.

Updated 2026-10-10.