1,191,091open jobs
66,724companies
211,161added this week
Browse all
Salary
$201k – $261k per year
Location
In office (Sunnyvale)
Seniority
Principal · 10+ years exp
Visa
No sponsorship (stated in the posting)

Confirmed on the employer's own hiring board on Oct 4, 2026. First seen by Alion on Aug 13, 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.

As a Principal Software Engineer, you will:

  • Work with developers within the team and on other cross-functional projects, as well as project management to drive, develop, and maintain the product
  • Develop and maintain software components on current and future products
  • Hands on in bug fixing current products
  • Implement software features of high quality and on schedule
  • Integrate, maintain, and improve both 3rd-Party and proprietary code.
  • Design and implement core systems and frameworks, as well new features that build off them
  • Communicate effectively, both verbal and written

We Are Looking For:

  • Minimum of 10 years of experience in networking related software development
  • B.S. in Computer Science or Electrical Engineering; M.S. highly preferable
  • Strong C/C++ experience in Unix/Linux in environment are essential
  • Strong understanding of REST API semantics and their application in networking appliances
  • Experience in using libcurl for formulating REST API calls
  • Experience with JSON data objects and their creation and parsing semantics
  • Experience with multi process/thread programming using Posix and System
  • Solid grasp of networking fundamentals, specifically TCP/IP networking, switching and routing
  • Solid understanding of principles of network management
  • Knowledge of general QA procedures and methodologies as well as software development fundamentals
  • Experience with embedded systems is a plus
  • Experience with networking principles is a plus
  • Experience with firewall configurations and operation is a plus

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

The US base salary range for this full-time position is $200,500 - $260,500. 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 labor 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 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 660,000+ customers around the globe

Free account
Stop reading job ads. Get the ones that fit.
One free account turns this page into a shortlist built around your stack, your level and your pay.
Match on every job. Stack, seniority, pay and location, scored against your profile.
1,191,091 open roles. Read straight off company career pages, refreshed every day.
Unlimited applications. Every one you send is tracked in one place, on-site or on a company board.
3 tailored CVs a month. Rewritten for the exact job you are applying to. Included free.
Create a free account Continue with Google
Free forever. No card. Under a minute.

Your match

How well do you fit this role?
Two answers are enough for a real match. No account needed.
Check my fit
Answers stay in this browser until you create an account.

Recommended for you based on this role

Backend
Similar stack
Same company
Sunnyvale
≈ $127k – $251k per year (Estimated) • Hybrid • Full-Time • 5+ years exp • Charlotte
Python
SQL
Databases
PostgreSQL
Apache Kafka
AI/ML
Spark
DevOps
GCP
OpenShift
Azure
CI/CD
AWS
Docker
Kubernetes
Apply
$191k – $253k per year • Equity • In office • Top Secret • 12+ years exp • Bachelor's Degree • Costa Mesa
AI/ML
Computer Vision
Robotics
Sensor Fusion
Apply
$180k per year • Remote (United States, ET hours) • 10+ years exp • Marietta
JavaScript
TypeScript
Node JS
Databases
PostgreSQL
AI/ML
Model Context Protocol
Function Calling
AI Agents
Context Engineering
LLM Evaluation
LLM Guardrails
Agentic Workflows
Tool Use
Frontend
Angular
Mobile
Clean Architecture
DevOps
CI/CD
AWS
Management
Confluence
Jira
Apply
≈ $156k – $310k per year (Estimated) • In office • 7+ years exp • Bachelor's Degree • Bastrop
Python
DevOps
Docker
Kubernetes
Cybersecurity
Zero Trust
Apply
$220k – $292k per year • Equity • In office • Top Secret • 10+ years exp • Bachelor's Degree • Chantilly
C
C
Embedded C
AI/ML
Computer Vision
Machine Learning
Robotics
Sensor Fusion
Apply
≈ $113k – $213k per year (Estimated) • In office • 5+ years exp • Bachelor's Degree • Rochester Hills
C#
C++
C#
.NET
DevOps
Podman
CI/CD
Git
Docker
Linux
TCP/IP
VPN
Wi-Fi
Cybersecurity
Wireshark
Management
Agile
Apply
≈ $18k – $45k per year (Estimated) • Remote (likely EAEU) • Bachelor's Degree • Moscow
Python
Go
JavaScript
C++
DevOps
Linux
Windows
TCP/IP
Cybersecurity
Ghidra
IDA Pro
YARA
Apply
Senior Dev Engineer 2 days ago
≈ $70k – $116k per year (Estimated) • In office • Full-Time • Warsaw
Python
Java
SQL
Bash
Java
Spring Boot
Databases
PostgreSQL
MS SQL
Apache Kafka
DevOps
Rest API
OpenShift
Azure DevOps
GitLab CI
Azure
CI/CD
Windows Server
Jenkins
Git
Docker
Kubernetes
Windows
SOAP
Management
Agile
Scrum
Apply
$110k – $150k per year • In office • 3+ years exp • San Jose
C++
DevOps
Windows
Apply
$100k – $130k per year • In office • Lincolnshire
C++
AI/ML
Copilot
Mobile
Android SDK
DevOps
RTOS
Windows
Apply
$123k – $151k per year • In office • Bachelor's Degree • Sunnyvale
Go
JavaScript
TypeScript
AI/ML
LLM
LLM Guardrails
Frontend
React.js
Apache ECharts
Material UI
Ant Design
Recharts
DevOps
Rest API
Git
Docker
Kubernetes
QA
Cypress
Playwright
Jest
Vitest
Apply
$212k – $259k per year • In office • 8+ years exp • Bachelor's Degree • Sunnyvale
Python
Go
Rust
C++
AI/ML
Model Context Protocol
AI Agents
LLM
A2A
Tool Use
Apply
$130k – $160k per year • In office • 3+ years exp • Bachelor's Degree • Sunnyvale
Python
Go
Rust
C++
AI/ML
Model Context Protocol
Function Calling
AI Agents
LLM
Tool Use
DevOps
gRPC
WebSockets
Apply
$140k – $160k per year • In office • 4+ years exp • Santa Clara
Python
Databases
ClickHouse
DevOps
Terraform
GCP
OpenTofu
Prometheus
VictoriaMetrics
Azure
CI/CD
AWS
Kubernetes
Grafana
Platform Engineering
OpenStack
Amazon CloudWatch
Linux
Cybersecurity
SIEM
Apply
$123k – $151k per year • Hybrid • Bachelor's Degree • Santa Clara
Python
Go
C++
DevOps
CI/CD
Docker
Kubernetes
TCP/IP
DNS
Apply
≈ $92k – $173k per year (Estimated) • In office • 4+ years exp • Bachelor's Degree • Sunnyvale
Python
Perl
AI/ML
Vertex AI
TPU
Edge AI
DevOps
GCP
HPC
Apply
≈ $178k – $368k per year (Estimated) • In office • 4+ years exp • PhD • Sunnyvale
Python
JavaScript
C++
DevOps
GCP
Apply
≈ $76k – $156k per year (Estimated) • In office • 4+ years exp • Bachelor's Degree • Sunnyvale
AI/ML
Vertex AI
TPU
DevOps
GCP
Apply
≈ $142k – $306k per year (Estimated) • In office • 10+ years exp • Bachelor's Degree • Sunnyvale
DevOps
GCP
Apply
≈ $81k – $169k per year (Estimated) • In office • 4+ years exp • Bachelor's Degree • Sunnyvale
SQL
Apply
See all jobs
This is one of many
1,191,091 more open roles from verified company boards, updated every day.