About Zscaler

Serving thousands of enterprise customers around the world including 40% of Fortune 500 companies, Zscaler (NASDAQ: ZS) was founded in 2007 with a mission to make the cloud a safe place to do business and a more enjoyable experience for enterprise users. As the operator of the world’s largest security cloud, Zscaler accelerates digital transformation so enterprises can be more agile, efficient, resilient, and secure. The pioneering, AI-powered Zscaler Zero Trust Exchange™ platform protects thousands of enterprise customers from cyberattacks and data loss by securely connecting users, devices, and applications in any location. 

Named a Best Workplace in Technology by Fortune and others, Zscaler fosters an inclusive and supportive culture that is home to some of the brightest minds in the industry. If you thrive in an environment that is fast-paced and collaborative, and you are passionate about building and innovating for the greater good, come make your next move with Zscaler. 

Job Description:

The Cloud Ops team is responsible for keeping the engines running at peak performance. On any given day, the Zscaler cloud processes tens of billions of transactions — scanning a petabyte of data — for 15 million users around the world. The transaction volume on the Zscaler cloud is growing significantly every quarter, yet the cloud’s overall stability just continues to improve, and that is directly attributable to the Cloud Ops team’s deep expertise and its dedication to reliability, availability, and scalability. To be a part of this team, you will, above all, need to share this dedication. 



  • Deep understanding of Zscaler's Cloud Service infrastructure
  • Represent the Senior Network Engineer in Japan for supporting the field Sales team if it happened to be raised service infrastructure related topics come at the field.
  • You will be a member of Zscaler’s global network engineering team and be responsible for deploying, operating, monitoring, and supporting the Zscaler worldwide production network inside multiple datacenters.
  • The ideal candidate has a proven track record of operating enterprise or telecom data center networks, and is a creative thinker, able to communicate smoothly with customers, self-starter, problem solver, learner, and is motivated by engineering excellence.



  • Bachelor's Degree in Engineering or equivalent experience.
  • Native Japanese speaker and fluent English.
  • Organizational skills and experience working with ticketing and inventory systems.
  • Experience in remote Data Centre operations.
  • 5-8 years of experience with high-speed fiber Ethernet networks and customer facing role.
  • Expert level hands-on experience in BGP routing operation and troubleshooting in both IPv4 and IPv6 for large scale Enterprise or Telecom networks.
  • Deep knowledge of DNS, HTTPS, SSL, GRE, and IPsec / VPN protocols with long-term hands-on troubleshooting experience
  • Real life experience troubleshooting L2 and L3 Fiber Ethernet networks.
  • Hands-on experience in IP-packet analysis using WireShark.
  • Deep knowledge on Unix/Linux/FreeBSD and Network equipment and the functions they perform.
  • Familiar with Unix Shell scripts. Python and Perl may be a plus but not mandatory.
  • JNCIP or CCIE or related certifications may be a plus but not mandatory.
  • Participate in technical discussions in both English and Japanese.
  • You thrive in a fast-paced environment with tight timelines and changing priorities.


By applying for this role, you adhere to applicable laws, regulations, and Zscaler policies, including those related to security and privacy standards and guidelines.

Zscaler is proud to be an equal opportunity and affirmative action employer. We celebrate diversity and are committed to creating an inclusive environment for all of our employees. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex (including pregnancy or related medical conditions), age, national origin, sexual orientation, gender identity or expression, genetic information, disability status, protected veteran status or any other characteristics protected by federal, state, or local laws.

See more information by clicking on the Know Your Rights: Workplace Discrimination is Illegal link.

Pay Transparency

Zscaler complies with all applicable federal, state, and local pay transparency rules. For additional information about the federal requirements, click here.

Zscaler is committed to providing reasonable support (called accommodations or adjustments) in our recruiting processes for candidates who are differently abled, have long term conditions, mental health conditions or sincerely held religious beliefs, or who are neurodivergent or require pregnancy-related support.

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