Lead Security Engineer Jobs in California

181 - 200 of 439 Jobs

Systems Engineer Vulnerability Security / Contract / RemoteJob Title - Systems Engineer Vulnerability Security / Contract / Remote

Motion Recruitment Partners, LLCCompany Name - Motion Recruitment Partners, LLC

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Remote or Boston, Massachusetts, USA

Full-time

We are partnering with a leading healthcare organization in New York City to build a Vulnerability Remediation Tiger Team. This is a 6-month engagement focused on addressing critical vulnerabilities across a massive and complex IT environment, spanning on-premise systems, cloud infrastructure, and networking. This is an opportunity to be part of a fully supported, high-priority Tiger Team reporting directly to the CISO's office. You'll work in a fast-paced, Scrum-style environment with the abili

Data Engineer Intern (TikTok-Privacy and Security-Data Infra) - 2026 Summer(BS/MS)Job Title - Data Engineer Intern (TikTok-Privacy and Security-Data Infra) - 2026 Summer(BS/MS)

TikTokCompany Name - TikTok

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San Jose, California, USA

Full-time

Location : San Jose Employment Type : Intern Job Code : A02944 Apply to this job Share this listing: Responsibilities The Data Infra, Privacy & Security team is missioned to ensure the safety of company-level big data products and compliance with local principals and regulations. We are adding privacy features to TikTok tech stack, and building world-class data security & privacy framework on top big data technology. It's an emerging area where many companies and industry are heavily inve

Application Security Engineer/ Hybrid in Atlanta & Dallas 2-3 days/ 6 Month Contract to HireJob Title - Application Security Engineer/ Hybrid in Atlanta & Dallas 2-3 days/ 6 Month Contract to Hire

Motion Recruitment Partners, LLCCompany Name - Motion Recruitment Partners, LLC

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Los Angeles, California, USA

Full-time

A global tech-driven organization in hiring a hybrid Application Security Engineer on a 6-month contract-to-hire basis. This role is based in Dallas or Atlanta and offers a flexible hybrid setup. You'll help secure modern cloud applications running across AWS, Azure, or Google Cloud Platform. This is a hands-on opportunity to shape security in a fast-moving product environment. You'll lead threat modeling, code reviews, and guide secure development across global teams. Ideal for someone with a s

Senior Staff Software Engineer (Cloud NW & AI Security)Job Title - Senior Staff Software Engineer (Cloud NW & AI Security)

PaloAlto NetworksCompany Name - PaloAlto Networks

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Santa Clara, California, USA

Full-time

Company Description Our Mission At Palo Alto Networks everything starts and ends with our mission: Being the cybersecurity partner of choice, protecting our digital way of life. Our vision is a world where each day is safer and more secure than the one before. We are a company built on the foundation of challenging and disrupting the way things are done, and we're looking for innovators who are as committed to shaping the future of cybersecurity as we are. Who We Are We take our mission of

Sr. Product Security Engineer (Python/React/Azure)Job Title - Sr. Product Security Engineer (Python/React/Azure)

Software Guidance & AssistanceCompany Name - Software Guidance & Assistance

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San Jose, California, USA

Contract

Software Guidance & Assistance, Inc., (SGA), is searching for a Sr. Product Security Engineer for a CONTRACT assignment with one of our premier SaaS clients. This is a hybrid role with 2-3 days onsite per week and can work in any client location including San Jose, CA , Seattle, WA, New York, NY, Atlanta, GA, and Boston, MA Responsibilities : Develop and maintain scalable, performant full-stack applications using Python and React JS Collaborate with cross-functional teams to integrate A

Software Development Engineer in Test Intern (TikTok-Privacy and Security-Business Risk Integrated Control)- 2026 Summer (BS/MS)Job Title - Software Development Engineer in Test Intern (TikTok-Privacy and Security-Business Risk Integrated Control)- 2026 Summer (BS/MS)

TikTokCompany Name - TikTok

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San Jose, California, USA

Full-time

Location : San Jose Employment Type : Intern Job Code : A156302 Apply to this job Share this listing: Responsibilities The TikTok Privacy team focuses on delivering testing framework, testing and debug tools, privacy governance platform, to ensure high quality and stability of privacy projects and privacy product. We look forward to your joining. Our mission is to protect personal data and privacy for billions of users on TikTok platform, let users explore, create and connect with each ot

Senior Security Software Engineer, Network SecurityJob Title - Senior Security Software Engineer, Network Security

RobloxCompany Name - Roblox

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San Mateo, California, USA

Full-time

Every day, tens of millions of people come to Roblox to explore, create, play, learn, and connect with friends in 3D immersive digital experiences- all created by our global community of developers and creators. At Roblox, we're building the tools and platform that empower our community to bring any experience that they can imagine to life. Our vision is to reimagine the way people come together, from anywhere in the world, and on any device.We're on a mission to connect a billion people with op

Security Access Control EngineerJob Title - Security Access Control Engineer

Allied UniversalCompany Name - Allied Universal

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Livermore, California, USA

Full-time

Overview Join Allied Universal Technology Services, a global leader in transforming the security industry. We integrate advanced technology - video surveillance, electronic access control, alarm monitoring and augmented solutions with physical security to help people feel safe. Whether you're an installation technician, service technician, engineer, or project manager, you'll discover rewarding opportunities to grow your career as part of a valued team. Apply today and be phenomenal-build a me

Sr Staff Software Engineer (NGFW System Infrastructure and Platform Security)Job Title - Sr Staff Software Engineer (NGFW System Infrastructure and Platform Security)

PaloAlto NetworksCompany Name - PaloAlto Networks

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Santa Clara, California, USA

Full-time

Mobile Security Engineer Intern (TikTok-Business Risk Integrated Control-Anti Automation Solutions) - 2026 Summer (BS/MS)Job Title - Mobile Security Engineer Intern (TikTok-Business Risk Integrated Control-Anti Automation Solutions) - 2026 Summer (BS/MS)

TikTokCompany Name - TikTok

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San Jose, California, USA

Full-time

Location : San Jose Employment Type : Intern Job Code : A34996 Apply to this job Share this listing: Responsibilities Anti-Automation Solutions (AA) is part of Business Integrated Risk Control team. Automated fraud refers to technical methods used by hackers to perform API abuse at scale using scripts and tools. Our vision is to establish an industry-leading team with a focus on end-to-end defense-in-depth systems with privacy and business needs in mind. We are responsible for continuousl

Security Solutions Engineer llJob Title - Security Solutions Engineer ll

Allied UniversalCompany Name - Allied Universal

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Santa Ana, California, USA

Full-time

Senior Staff Engineer, Backend - Cortex Cloud (Posture Security)Job Title - Senior Staff Engineer, Backend - Cortex Cloud (Posture Security)

PaloAlto NetworksCompany Name - PaloAlto Networks

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Santa Clara, California, USA

Full-time

Senior Product Security Engineer Researcher - Reverse EngineerJob Title - Senior Product Security Engineer Researcher - Reverse Engineer

Request Technology, LLCCompany Name - Request Technology, LLC

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Remote

Full-time

No SPONSORSHIP Senior Product Security Engineer SALARY: $180,000 - 220,000 plus 10% plus pre-IPO stock options LOCATION: remote Looking for a Security researcher proficient in reverse engineer. Experience in analyzing malware understanding of cryptography user in ransomware ability to develop tools to augment existing capabilities endpoint hardening and testing. Join a team of cyber Security Engineers focused on building products and solutions for mid-market and enterprise customers. We deliver

(USA) Principal, Systems and Infrastructure Engineer, Information SecurityJob Title - (USA) Principal, Systems and Infrastructure Engineer, Information Security

Walmart Inc.Company Name - Walmart Inc.

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Remote or Denver, Colorado, USA

Full-time

Position Summary Are you ready to lead the charge in transforming our infrastructure? As a Principal, Systems and Infrastructure Engineer at Walmart/VIZIO, you will play a pivotal role in designing, building, and maintaining scalable and secure infrastructure. This is a unique opportunity to drive the migration and modernization of critical applications and systems, ensuring seamless transitions and minimal downtime. What you'll do About the Team: The Walmart/VIZIO Team is dedicated to levera

Security Software Engineer (Starshield)Job Title - Security Software Engineer (Starshield)

SpaceXCompany Name - SpaceX

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Hawthorne, California, USA

Full-time

SpaceX was founded under the belief that a future where humanity is out exploring the stars is fundamentally more exciting than one where we are not. Today SpaceX is actively developing the technologies to make this possible, with the ultimate goal of enabling human life on Mars. SECURITY SOFTWARE ENGINEER (STARSHIELD) Starshield leverages SpaceX's Starlink technology and launch capability to support national security efforts. While Starlink is designed for consumer and commercial use, Starshi

Sr Software Engineer (L7 Security)Job Title - Sr Software Engineer (L7 Security)

PaloAlto NetworksCompany Name - PaloAlto Networks

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Santa Clara, California, USA

Full-time

Security Engineer, Threat IntelligenceJob Title - Security Engineer, Threat Intelligence

Dropbox IncCompany Name - Dropbox Inc

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Remote

Full-time

Role Description Dropbox Threat Intelligence leverages data-driven insights to understand and counteract potential threats to Dropbox and its users. By analyzing attack patterns and threat actors, we provide actionable intelligence that supports the business in fortifying defences and enhancing security resilience. In this role you will investigate critical threats to Dropbox and our customers, profiling threat actors and uncovering the actions, techniques and objectives of these malicious acto

Information Systems Security Engineer (ISSE)Job Title - Information Systems Security Engineer (ISSE)

RTX CorporationCompany Name - RTX Corporation

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San Jose, California, USA

Full-time

Date Posted: 2025-06-25 Country: United States of America Location: CA827: 100 Headquarters Dr San Jose 100 Headquarters Drive , San Jose, CA, 95134 USA Position Role Type: Onsite U.S. Citizen, U.S. Person, or Immigration Status Requirements: Active and transferable U.S. government issued security clearance is required prior to start date.Security Clearance: DoD Clearance: TS/SCI Applied Signal Technology (AST) is seeking an Information Systems Security Engineer who strives for excellence and

Offensive Security Engineer, Penetration TestingJob Title - Offensive Security Engineer, Penetration Testing

StripeCompany Name - Stripe

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Remote

Full-time

About Stripe Stripe is a financial infrastructure platform for businesses. Millions of companies-from the world's largest enterprises to the most ambitious startups-use Stripe to accept payments, grow their revenue, and accelerate new business opportunities. Our mission is to increase the GDP of the internet, and we have a staggering amount of work ahead. That means you have an unprecedented opportunity to put the global economy within everyone's reach while doing the most important work of you

Security Data Engineer - USDSJob Title - Security Data Engineer - USDS

TikTokCompany Name - TikTok

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San Jose, California, USA

Full-time

Location : San Jose Employment Type : Regular Job Code : A41491A Apply to this job Share this listing: Responsibilities We are seeking a versatile and results-driven Data Engineer to join the USDS Cyber Defense & Engineering team at TikTok. In this role, you'll collaborate with cross-functional teams across regions to develop innovative solutions that strengthen the security and privacy of our users, helping make TikTok the most trusted platform. The ideal candidate is a strong problem so