Security Engineer Jobs in Los Angeles, CA
Security Engineer jobs in Los Angeles are concentrated in entertainment technology, defense contracting, and financial services, with clusters in Culver City, El Segundo, and downtown Los Angeles drawing the heaviest demand. Employers hiring right now include ALTRUIST, K2 Space, and Snap. Scan the live roles below and apply to whichever ones fit.
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Showing 5 of 533+ Security Engineer jobs
Innovate with purpose
At BILL, we believe in empowering the businesses that drive our economy. By replacing outdated financial processes with innovative tools, we help businesses—from startups to established brands—make smarter decisions and gain control of their operations. And we don't stop there: we're creating the future of financial automation so businesses can spend more time on what matters.
Working here means you become part of a vision-driven team that's ready to tackle challenges and build cutting-edge solutions. We value purpose, drive, and curiosity—and we thrive in a fast-paced, ever-changing environment. We're remote-first, with office spaces in San Jose, CA and Draper, UT — and opportunities to connect in person when it counts. BILLders collaborate to deliver real impact for businesses that need more time in their busy weeks.
BILL builds high performing teams and we seek to hire the best talent for every role. We're committed to building a workplace that fosters inclusion and diverse perspectives, valuing each person's unique skills and experiences. We'd love to hear from you—you might be just what we're looking for, whether in this role or another.
✨ Let's give businesses more time for what matters.
Make your impact within a rapidly growing Fintech Company
We are looking to hire a Sr. Staff AI Security Engineer to lead the secure deployment and operation of AI and ML systems across the company. This role moves beyond traditional perimeter security to address the unique vulnerabilities of Large Language Models (LLMs) and automated orchestration layers. Your mission: provide a secure foundation—gateways, orchestration layers, and tool ecosystems—that enables developers to innovate at pace while maintaining a robust security posture.
You'll partner with platform ,engineering and IT teams as a builder and enabler rather than a gatekeeper, embedding security into the AI development lifecycle by default and shaping how BILL navigates the AI threat landscape.
Secure AI Architecture & Infrastructure: Design and implement secure gateways that act as controlled entry points for AI requests, ensuring all interactions are authenticated and logged. Build orchestration layers that enforce security policies (rate limiting, content filtering) across multiple AI models and providers. Integrate security controls into developer tool ecosystems so security is baked in by default—highly available, scalable via infrastructure as code, and never a performance bottleneck for production AI applications.
Adversarial Research & Red-Teaming: Own and stand up a formal AI red-teaming practice to identify vulnerabilities before they reach production. Research and simulate advanced attack vectors including prompt injection, jailbreaking, adversarial suffixes, model extraction, model poisoning, training data leakage, and AI supply chain compromise. Systematically document findings and deliver clear remediation paths to engineering teams.
Strategic Leadership: Own the long-term AI security roadmap, aligning technical goals with BILL's business mission. Act as the primary subject matter expert advising senior leadership on AI risk. Mentor engineers across the organization to raise BILL's collective security IQ.
Responsibilities
- Design, build, and operate secure AI gateways and policy orchestration layers spanning multiple AI models and service providers
- Configure end point settings for AI tools in collaboration with IT end point management solutions.
- Stand up and lead a formal AI red-teaming practice covering prompt injection, jailbreaking, model extraction, and emerging attack vectors
- Identify and mitigate AI-specific threats across input manipulation, supply chain (model weights, datasets, third-party AI libraries), data privacy (training data leakage, PII disclosure), and model integrity (poisoning, unauthorized fine-tuning)
- Automate security checks and guardrails to enable rapid development cycles without sacrificing security posture
- Apply and operationalize the OWASP LLM Top 10 framework to categorize and mitigate risk
- Own the AI security roadmap and advise senior leadership on AI risks and safe adoption
- Embed with platform teams as a partner, fostering a collaborative security culture
- Mentor fellow engineers on AI security best practices
- Document and report vulnerabilities with clear remediation guidance and technical direction
We'd love to chat if you have:
- A proven track record of building and scaling security systems in high-growth environments
- High proficiency in Python or Go to build, automate, and scale security tooling
- Deep understanding of LLM-specific attack vectors: prompt injection and jailbreaking
- Deep understanding and applied experience with the OWASP LLM Top 10 framework
- Experience designing secure API gateways, orchestration layers, and scalable security infrastructure using infrastructure as code
- Experience standing up red-teaming or adversarial testing programs
- A strong grasp of AI/ML fundamentals, including model supply chain and data privacy risks
- A builder mentality and passion for the AI space—you enable development through secure architecture rather than blocking it
- The ability to influence senior leadership and mentor engineers across the organization
- A background in Computer Science, Cybersecurity, or a related technical field
Visa Sponsorship: Please note that this position is not eligible for visa sponsorship. Applicants must have authorization to work in the United States without requiring visa sponsorship now or in the future.
#LI
What's in it for you?
Redefining how businesses automate their work is a fast-paced, exciting, and fun environment. But we also have benefits and perks to ensure the magic isn't only experienced by our customers, but by our employees as well.
Here is a preview of some of the amazing benefits here at BILL:
- 100% paid employee health, dental, and vision plans (choose HMO, PPO, or HDHP)
- HSA & FSA accounts
- Life Insurance, Long & Short-term disability coverage
- Employee Assistance Program (EAP)
- 11+ Observed holidays and wellness days and flexible time off
- Employee Stock Purchase Program with employee discounts
- Wellness & Fitness initiatives
- Employee recognition and referral programs
- And much more
Don't believe us? Check out our culture, benefits, and teams on our career site, LinkedIn Life, or YouTube pages.
BILL is an Equal Opportunity Employer. We believe our best ideas come from the unique stories, perspectives, and experiences of our team members. We welcome people of all backgrounds, abilities, and identities to bring their authentic selves and contribute to our culture.
We are committed to a transparent, inclusive hiring process that reflects our values. If you need accommodations at any stage, please contact interviewaccommodations@hq.bill.com. To ensure a fair evaluation, our Candidate Integrity Policy prohibits the use of unapproved external assistance, including generative AI, during live interviews or assessments. Doing so will result in a review and potential disqualification.
Our Applicant Privacy Notice describes how BILL treats the personal information it receives from applicants.
Innovate with purpose
At BILL, we believe in empowering the businesses that drive our economy. By replacing outdated financial processes with innovative tools, we help businesses—from startups to established brands—make smarter decisions and gain control of their operations. And we don't stop there: we're creating the future of financial automation so businesses can spend more time on what matters.
Working here means you become part of a vision-driven team that's ready to tackle challenges and build cutting-edge solutions. We value purpose, drive, and curiosity—and we thrive in a fast-paced, ever-changing environment. We're remote-first, with office spaces in San Jose, CA and Draper, UT — and opportunities to connect in person when it counts. BILLders collaborate to deliver real impact for businesses that need more time in their busy weeks.
BILL builds high performing teams and we seek to hire the best talent for every role. We're committed to building a workplace that fosters inclusion and diverse perspectives, valuing each person's unique skills and experiences. We'd love to hear from you—you might be just what we're looking for, whether in this role or another.
✨ Let's give businesses more time for what matters.
Make your impact within a rapidly growing Fintech Company
We are looking to hire a Sr. Staff AI Security Engineer to lead the secure deployment and operation of AI and ML systems across the company. This role moves beyond traditional perimeter security to address the unique vulnerabilities of Large Language Models (LLMs) and automated orchestration layers. Your mission: provide a secure foundation—gateways, orchestration layers, and tool ecosystems—that enables developers to innovate at pace while maintaining a robust security posture.
You'll partner with platform ,engineering and IT teams as a builder and enabler rather than a gatekeeper, embedding security into the AI development lifecycle by default and shaping how BILL navigates the AI threat landscape.
Secure AI Architecture & Infrastructure: Design and implement secure gateways that act as controlled entry points for AI requests, ensuring all interactions are authenticated and logged. Build orchestration layers that enforce security policies (rate limiting, content filtering) across multiple AI models and providers. Integrate security controls into developer tool ecosystems so security is baked in by default—highly available, scalable via infrastructure as code, and never a performance bottleneck for production AI applications.
Adversarial Research & Red-Teaming: Own and stand up a formal AI red-teaming practice to identify vulnerabilities before they reach production. Research and simulate advanced attack vectors including prompt injection, jailbreaking, adversarial suffixes, model extraction, model poisoning, training data leakage, and AI supply chain compromise. Systematically document findings and deliver clear remediation paths to engineering teams.
Strategic Leadership: Own the long-term AI security roadmap, aligning technical goals with BILL's business mission. Act as the primary subject matter expert advising senior leadership on AI risk. Mentor engineers across the organization to raise BILL's collective security IQ.
Responsibilities
- Design, build, and operate secure AI gateways and policy orchestration layers spanning multiple AI models and service providers
- Configure end point settings for AI tools in collaboration with IT end point management solutions.
- Stand up and lead a formal AI red-teaming practice covering prompt injection, jailbreaking, model extraction, and emerging attack vectors
- Identify and mitigate AI-specific threats across input manipulation, supply chain (model weights, datasets, third-party AI libraries), data privacy (training data leakage, PII disclosure), and model integrity (poisoning, unauthorized fine-tuning)
- Automate security checks and guardrails to enable rapid development cycles without sacrificing security posture
- Apply and operationalize the OWASP LLM Top 10 framework to categorize and mitigate risk
- Own the AI security roadmap and advise senior leadership on AI risks and safe adoption
- Embed with platform teams as a partner, fostering a collaborative security culture
- Mentor fellow engineers on AI security best practices
- Document and report vulnerabilities with clear remediation guidance and technical direction
We'd love to chat if you have:
- A proven track record of building and scaling security systems in high-growth environments
- High proficiency in Python or Go to build, automate, and scale security tooling
- Deep understanding of LLM-specific attack vectors: prompt injection and jailbreaking
- Deep understanding and applied experience with the OWASP LLM Top 10 framework
- Experience designing secure API gateways, orchestration layers, and scalable security infrastructure using infrastructure as code
- Experience standing up red-teaming or adversarial testing programs
- A strong grasp of AI/ML fundamentals, including model supply chain and data privacy risks
- A builder mentality and passion for the AI space—you enable development through secure architecture rather than blocking it
- The ability to influence senior leadership and mentor engineers across the organization
- A background in Computer Science, Cybersecurity, or a related technical field
Visa Sponsorship: Please note that this position is not eligible for visa sponsorship. Applicants must have authorization to work in the United States without requiring visa sponsorship now or in the future.
#LI
What's in it for you?
Redefining how businesses automate their work is a fast-paced, exciting, and fun environment. But we also have benefits and perks to ensure the magic isn't only experienced by our customers, but by our employees as well.
Here is a preview of some of the amazing benefits here at BILL:
- 100% paid employee health, dental, and vision plans (choose HMO, PPO, or HDHP)
- HSA & FSA accounts
- Life Insurance, Long & Short-term disability coverage
- Employee Assistance Program (EAP)
- 11+ Observed holidays and wellness days and flexible time off
- Employee Stock Purchase Program with employee discounts
- Wellness & Fitness initiatives
- Employee recognition and referral programs
- And much more
Don't believe us? Check out our culture, benefits, and teams on our career site, LinkedIn Life, or YouTube pages.
BILL is an Equal Opportunity Employer. We believe our best ideas come from the unique stories, perspectives, and experiences of our team members. We welcome people of all backgrounds, abilities, and identities to bring their authentic selves and contribute to our culture.
We are committed to a transparent, inclusive hiring process that reflects our values. If you need accommodations at any stage, please contact interviewaccommodations@hq.bill.com. To ensure a fair evaluation, our Candidate Integrity Policy prohibits the use of unapproved external assistance, including generative AI, during live interviews or assessments. Doing so will result in a review and potential disqualification.
Our Applicant Privacy Notice describes how BILL treats the personal information it receives from applicants.
See All 533+ Security Engineer Jobs in Los Angeles
Find roles in Los Angeles that match your experience and apply in just a few clicks.
Find Security Engineer JobsSecurity Engineer Job Market in Los Angeles
Who's Hiring
- ALTRUIST71
- K2 Space36
- Snap36
- Apex Technology36
- Oaktree Capital Management36
Top Industries Hiring
- Technology & Software89
- Manufacturing36
- Law & Legal Services18
- Consulting & Professional Services18
Security Engineer Jobs in Los Angeles: Frequently Asked Questions
How do I get a security engineer job in Los Angeles?
Focus your search on the sectors that hire most heavily in Los Angeles: entertainment and media technology companies in Culver City and Hollywood, aerospace and defense contractors in El Segundo and the South Bay, and financial services firms downtown. Candidates who hold certifications like CISSP, CISM, or CompTIA Security+ and can demonstrate hands-on experience with cloud security or zero-trust architecture stand out in this market.
Which companies hire security engineers in Los Angeles?
Employers hiring security engineers in Los Angeles right now include ALTRUIST, K2 Space, and Snap, based on current listings on Migrate Mate as of September 2026. The Los Angeles market is particularly strong with defense primes, entertainment studios with large digital infrastructure, and venture-backed tech firms headquartered on the Westside.
Are there remote security engineer jobs in Los Angeles?
Yes, though it varies by function. Roles centered on cloud security, threat intelligence, and security operations center analysis tend to be more remote-friendly, while positions requiring physical access to on-site hardware or government-cleared facilities are almost always on-site. About 72% of security engineer openings tied to Los Angeles are remote or hybrid as of September 2026, with hybrid arrangements most common among Westside tech employers.
How can I get a security engineer job in Los Angeles with little or no experience?
The most realistic entry path in Los Angeles is moving into a junior security analyst or IT support role at one of the city's many mid-size tech companies or managed security service providers, then building toward a security engineer title. Defense contractors in El Segundo and the South Bay also hire entry-level candidates who hold a clearance or are clearance-eligible. Completing a recognized certification such as CompTIA Security+ before applying gives you a measurable edge locally.
Which industries hire the most security engineers in Los Angeles?
Los Angeles security engineer roles concentrate in Technology & Software, Manufacturing, and Law & Legal Services, based on current listings on Migrate Mate as of September 2026. The combination of a large defense and aerospace corridor in the South Bay, major entertainment and streaming companies on the Westside, and a growing fintech and healthtech startup scene downtown makes Los Angeles one of the more diverse security engineering markets in the country.
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