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. 

For over 15 years, Zscaler has been disrupting and transforming the security industry. Our 100% purpose-built cloud platform delivers the entire gateway security stack as a service through 150 global datacenters to securely connect users to their applications, regardless of device, location, or network in over 185 countries protecting over 3,900 companies and have detected 100 million threats/day. 

We develop innovative solutions that are transforming the internet security business, and millions of users rely daily on our service for data protection and comprehensive security. We also provide real-time analytics to our customers for unmatched visibility and maintain a state-of-the-art NOC. The development team works on the complete L1-L7 n/w stack, Zscaler OS, Device Drivers, web filtering, policy enforcement, next-gen firewall, sandboxing, DLP, Digital Experience and mobile user solutions. Being responsive to our customers and delivering industry-leading, mission-critical solutions require precise engineering and a philosophy of continuous improvement- both areas in which Zscaler engineers excel. 


  • You will be responsible for developing a cloud application to measure and monitor end user experience, application performance and network health .
  • Your programming expertise will help deliver software that will be deployed across private and public clouds for our Fastest growing product line - ZDX .
  • You will be expected to participate in all phases of the product development cycle, from definition, design, through implementation and testing.
  • Develop functional specifications, assess task requirements and scheduling, and participate in the development, debugging and support.

Minimum Qualifications:

  • 6+ years of software development experience in large-scale commercial networking-oriented applications
  • Expert-level programming skills in C and Unix.
  • Hands on Experience in troubleshooting networking issues using tools like Wireshark, tcpdump, curl, wget etc.
  • Strong in fundamentals - TCP/IP, Socket Programming and Fault Tolerance.
  • Experience on HTTP , TLS/SSL
  • Experience with Linux/FreeBSD based networking solutions.
  • Experience in Load balancers, Web Servers and Routers in multi-threading / multi-core / fault tolerant real-time embedded platforms.
  • Good understanding of distributed systems and web proxies is a plus.
  • Comfortable with python and writing unit test cases for features developed.
  • Familiar with the complete software development cycle.
  • Self-starter, quick-learner, able to multitask, and collaborate with others in a team environment.
  • BS/MS degree (Engineering/Computer Science) .
  • Ability to work with remote teams, handle multiple tasks, prioritize and meet deadlines
  • Excellent verbal, written and interpersonal skills.

Desired Skills:

  • Experiencing in Security, High performance Computing, Event based programming,
  • Working in Agile teams to push new code into production every sprint.
  • Knowledge of VPN, ICAP, IPS/IDS and Firewall is a plus.
  • Experience with Go and Python.
  • Good exposure in developing services on at least one of the cloud platforms - AWS/AZURE/GCP.



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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