Demo

Senior Java Developer

Candidate Experience site
Sunnyvale, CA Full Time
POSTED ON 3/13/2026
AVAILABLE BEFORE 5/13/2026

Responsibilities

  • Design, develop, and maintain Java applications and services that interface with networking hardware.
  • Develop APIs and SDKs for interacting with network devices using SNMP, Radius, REST, or proprietary protocols.
  • Implement device discovery, configuration management, telemetry collection, and monitoring features.
  • Optimize application performance for real-time device communication and data processing.
  • Collaborate with network engineers to understand hardware capabilities and protocol specifications.
  • Write robust unit, integration, and performance tests.
  • Lead code reviews, mentor junior developers, and contribute to architecture discussions.
  • Ensure the security and reliability of applications handling network device communications.
  • Design and maintain core platform services such as policy enforcement, authentication and authorization (including SSO), scheduling, certificate management, events and alarms, and other system-level capabilities.
  • Troubleshoot and resolve complex networking and software issues.

Required Qualifications

  • 5 years of professional Java development experience.
  • Deep understanding of networking concepts (TCP/IP, VLANs, SNMP, DHCP, NAT, routing, switching).
  • Experience with device-level communication protocols: SNMP, Radius, CLI automation (e.g., via SSH/Telnet).
  • Strong understanding of multi-threading, concurrency, and memory management in Java.
  • Experience working with network management systems (NMS) or network configuration tools.
  • Familiarity with microservices architecture, Spring Boot, containerization (Docker, Kubernetes), relational and in-memory data stores (SQL/MariaDB, Redis), RPC frameworks (gRPC), and ORM technologies (Hibernate).
  • Proficiency with Git, CI/CD tools, and automated testing frameworks.
  • Excellent problem-solving, communication, and collaboration skills.

 

The US base salary range for this full-time position is $150,000-$183,000. 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 660,000 customers around the globe.

Salary : $150,000 - $183,000

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