Principal Agent Security Engineer
Fortinet
Listing collected from Fortinet's career site. NextChapter is independent of Fortinet.
Sunnyvale, CA · Posted October 15, 2026
Just laid off? Start here: a plan for the first weeks
Want recruiters in Security to be able to find you?
Roles at this level, like this one at Fortinet, are often filled through recruiters.
See every open role at Fortinet
More in California job market · Technology & Software · Security jobs
More roles at Fortinet
- Regional Sales Engineer, SLED · Hartford, CT
- Staff Software DevQA Engineer(End-to-End Testing) · Santa Clara, CA
- Regional Sales Engineer · New York, NY
- Senior Software Dev QA Engineer · Santa Clara, CA
- Early Careers: AI Automation Engineer · Sunnyvale, CA
- Principal Embedded Software Development Engineer · Sunnyvale, CA
Similar jobs
- Security Engineer · Town · San Francisco, CA
- Cloud Security Engineer · Viasat · Carlsbad, CA
- Principal Systems Security Engineer · Viasat · Carlsbad, CA
- Sr. Cybersecurity Engineer - HYBRID · OSI Systems · Hawthorne, CA
- Staff Product Security Engineer · Reddit · San Francisco, CA
- Security Engineer · Cognition · San Francisco, CA
Where Sunnyvale, CA ranks
Where Sunnyvale, CA placed in our monthly rankings, month by month. Each month stays online at its own address.
November 2026
- #1Best cities for consumer and retail pay after cost of living$194k · of 11
- #3Best cities for data and analytics pay after cost of living$213k · of 28
- #4Best cities for pay after cost of living in California$192k · of 32
- #4Best all-round cities for AI careers95 / 100 · of 100
- #4Best all-round cities for AI careers in the West Coast88 / 100 · of 39
- #5Best cities for pay after cost of living in the West Coast$192k · of 39
Rankings about security jobs
- Best cities for security jobs #1 San Francisco (316 openings)
- Best cities for security pay after cost of living #1 San Mateo ($241k)
- Most requested AI skills in security jobs #1 AI tools in daily work (10.8%)
- Employers with the most security jobs #1 Amazon (318 roles)
How AI is used in this kind of work
Among computer occupations, all other, AI is already used for a large share of the tasks. Measured exposure for computer occupations, all other: 31% (high).
Share of this job’s tasks that AI is already used for at work, from real usage. It is not a forecast of job loss, and a low number means no use seen yet. Source: Anthropic Economic Index.
Skills this job asks for
Say which you have and which you want to build. We use it to match you to jobs like this one.
About the job
Responsibilities
Build AI security solutions for enterprise customers.
Design and implement security controls for agentic AI systems.
Provide technical leadership across product development, working closely with Product, Engineering, and QA teams to define architecture, drive technical decisions, and deliver secure and scalable solutions.
Develop pre-sales and post-sales tools and environments to support customer evaluations, deployments, troubleshooting, and integration.
Own and operate production services, including troubleshooting, performance optimization, reliability improvements, and ongoing hardening of security-critical systems.
Research emerging technologies and security trends to identify new opportunities and develop innovative solutions.
Drive technical strategy and product roadmap, including new feature design, architecture evolution.
Requirements
Strong software engineering skills in Python or Go, or in a systems language such as Rust or C/C++.
Bachelor’s degree or above in Computer Science, or equivalent practical experience.
8+ years of experience building and operating production backend services, including architecture ownership of security-critical and highly available systems.
Strong system design and architecture skills, with the ability to make sound technical trade-offs across security, scalability, reliability, and performance.
Self-driven and proactive, with strong problem-solving, debugging, and technical leadership skills and a focus on delivering high-quality solutions.
Strong Plus
Experience with LLM and agent security, including areas such as prompt injection, tool poisoning, jailbreaks, and agent security controls.
Agentic AI architecture — Deep understanding of MCP and A2A, with hands-on experience designing and building agentic AI systems, including tool-calling and agent frameworks.
Cybersecurity background — Professional experience in application security, network security, identity, API security, or other cybersecurity domains.
Fortinet makes possible a digital world that we can always trust through its mission to protect people, devices, and data everywhere. This is why the world’s largest enterprises, service providers, and government organizations choose Fortinet to securely accelerate their digital journey. The Fortinet Security Fabric platform delivers broad, integrated, and automated protections across the entire digital attack surface, securing critical devices, data, applications, and connections from the data center to the cloud to the home office. Ranking #1 in the most security appliances shipped worldwide, more than 615,000 customers trust Fortinet to protect their businesses. And the Fortinet NSE Training Institute, an initiative of Fortinet’s Training Advancement Agenda (TAA), provides one of the largest and broadest training programs in the industry to make cyber training and new career opportunities available to everyone.