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Senior Staff iOS Engineer

Zscaler

$154,000 - $220,000
Jul 9, 2025
San Jose, CA, USA
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Zscaler is seeking an experienced Mac/iOS Developer to join their Endpoint Engineering team to develop and maintain a cross-platform client application for MacOS and IOS, ensuring secure endpoint traffic steering to the Zscaler cloud.

Requirements

  • 7+ years of experience in Objective C/SWIFT/C++
  • Experience in Mac networking stack and networking protocols and knowledge of design principles, patterns and best practices
  • Experience with RESTful APIs, offline storage, threading, and performance tuning
  • Knowledge of the Mac/iOS ecosystem and the libraries available for common tasks
  • Network stack development experience, specifically for VPN client type applications
  • Worked on a VPN or ZTNA client application and understand the intricacies of multi-platform client apps
  • Experience with PKI and network security technologies or familiarity with cloud message APIs and Apple Push Notifications

Responsibilities

  • Developing both MAC & iOS applications and frameworks
  • Translating product requirements to technical requirements, and in turn translate designs and mockups into high-quality code
  • Ensuring the best possible performance, quality, and responsiveness of the application
  • Helping maintain code quality, coding standards and automation
  • Troubleshooting and resolving customer escalations

Other

  • Reporting to the Sr. Manager of Software Engineering
  • LI-JM1
  • LI-Hybrid
  • Zscaler’s salary ranges are benchmarked and are determined by role and level.
  • The range displayed on each job posting reflects the minimum and maximum target for new hire salaries for the position across all US locations and could be higher or lower based on a multitude of factors, including job-related skills, experience, and relevant education or training.
  • The base salary range listed for this full-time position excludes commission/ bonus/ equity (if applicable) + benefits.
  • At Zscaler, we are committed to building a team that reflects the communities we serve and the customers we work with. We foster an inclusive environment that values all backgrounds and perspectives, emphasizing collaboration and belonging.
  • Join us in our mission to make doing business seamless and secure.
  • 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 committed to providing equal employment opportunities to all individuals. We strive to create a workplace where employees are treated with respect and have the chance to succeed. All qualified applicants will be considered 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 characteristic protected by federal, state, or local laws.