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Salary
$130k – $160k per year
Location
In office (Sunnyvale)
Seniority
Middle · 3+ years exp
Visa
No sponsorship (stated in the posting)

Confirmed on the employer's own hiring board on Nov 5, 2026. First seen by Alion on Sep 16, 2026. Fortinet scores A on the Alion truth index.

Overview
Company
Impact
Profile match
Fortinet is an American cybersecurity company founded in 2000 by two brothers who had previously built the intrusion prevention firm NetScreen. It is best known for FortiGate, a firewall built around custom silicon that gives it a price and throughput advantage over software-only competitors, and it has extended that installed base into a wide security platform covering secure access service edge, endpoint protection, security operations and switching and wireless. Headquartered in Sunnyvale and listed on Nasdaq, it sells almost entirely through channel partners and is unusually strong with mid-sized enterprises and service providers.

Senior Software Engineer (Agent Security)

Responsibility

  • Build AI security solutions for enterprise customers.
  • Design and implement security controls for agentic AI systems, including agents, tools, and agent-to-agent interactions.
  • Work cross-functionally with PM and QA teams to deliver secure and scalable solutions.
  • Develop pre-sales and post-sales tools and environments to support customer evaluations, deployments, troubleshooting, and integration.
  • Research emerging technologies and security trends to identify new opportunities and develop innovative solutions.

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 a related field, or equivalent practical experience.
  • 3+ years of backend development experience, including cloud-native infrastructure, networking, and building reliable services at scale.
  • Solid understanding of application and network protocols, such as HTTP, gRPC, and WebSocket, and/or hands-on experience with reverse proxies, API gateways, or identity-aware proxies.
  • Self-drive and proactive with strong problem-solving and debugging skills and a focus on delivering high-quality solutions.

Strong Plus

  • Hands-on experience with the agentic AI ecosystem, including MCP, tool calling, and agent frameworks.
  • Experience with LLM and agent security, including areas such as prompt injection, tool poisoning, jailbreaks, and agent security controls.
  • Background or professional experience in cybersecurity, particularly application security, network security, identity, or API security.

Must be authorized to work in the U.S. without sponsorship.

The US base salary range for this full-time position is $130,000-$160,000. Fortinet offers employees a variety of benefits, including medical, dental, vision, life and disability insurance, 401(k), 11 paid holidays, vacation time, and sick time, as well as a comprehensive leave program.

Wage ranges are based on various factors, including the labour market, job type, and job level. Exact salary offers will be determined by factors such as the candidate's subject knowledge, skill level, qualifications, experience, and geographic location.

All roles are eligible to participate in the Fortinet equity program. Bonus eligibility is reviewed at the time of hire and annually at the Company’s discretion.

Why Join Us:

We encourage candidates from all backgrounds and identities to apply. We offer a supportive work environment and a competitive Total Rewards package to support you with your overall health and financial well-being.

Embark on a challenging, enjoyable, and rewarding career journey with Fortinet. Join us in bringing solutions that make a meaningful and lasting impact to our 890,000+ customers around the globe.

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