Sr. Staff macOS/iOS Developer - Networking

Zscaler•San Jose, CA

11h•Hybrid

About The Position

Zscaler is a pioneer and global leader in zero trust security. The world’s largest businesses, critical infrastructure organizations, and government agencies rely on Zscaler to secure users, branches, applications, data & devices, and to accelerate digital transformation initiatives. Distributed across more than 160 data centers globally, the Zscaler Zero Trust Exchange platform combined with advanced AI combats billions of cyber threats and policy violations every day and unlocks productivity gains for modern enterprises by reducing costs and complexity. Here, impact in your role matters more than title and trust is built on results. We believe in transparency and value constructive, honest debate—we’re focused on getting to the best ideas, faster. We build high-performing teams that can make an impact quickly and with high quality. To do this, we are building a culture of execution centered on customer obsession, collaboration, ownership and accountability. We champion an “AI Forward, People First” philosophy to help us accelerate and innovate, empowering our people to embrace their potential. If you’re driven by purpose, thrive on solving complex challenges and want to make a positive difference on a global scale, we invite you to bring your talents to Zscaler to help shape the future of cybersecurity. We are looking for a Mac/iOS Developer to join our team in San Jose, CA on a hybrid basis or remotely based in the US, reporting to the Sr. Manager of Software Engineering within the Endpoint Engineering department. You will be a key driver on the Mobile team, developing cross-platform client applications for MacOS and iOS that securely steer traffic to the world’s largest cloud security platform. Your vision and technical expertise will enable organizations worldwide to harness speed and agility through a cloud-first strategy, directly impacting a global footprint of over 65 million users.

Requirements

7+ years of professional software development experience specializing in Objective C, SWIFT, or C++
Deep technical understanding of the Mac networking stack, networking protocols, and modern architectural design patterns
Proven experience working with RESTful APIs, offline storage, multi-threading, and performance tuning
Extensive knowledge of the Mac/iOS ecosystem and the standard libraries used for common engineering tasks
Demonstrated ability to translate product requirements into high-quality, scalable technical solutions

Nice To Haves

Specialized experience in network stack development specifically for VPN or ZTNA client applications
Professional familiarity with PKI, network security technologies, cloud message APIs, or Apple Push Notifications
A proven track record of navigating the unique intricacies and challenges of building multi-platform client applications

Responsibilities

Develop high-performance MAC and iOS applications and frameworks that serve as the gateway to our global cloud security platform
Partner with product managers to translate complex requirements and design mockups into clean, high-quality code
Take accountability for the performance, quality, and responsiveness of applications to ensure a seamless user experience
Uphold and evolve engineering excellence by maintaining rigorous code quality, standards, and automation practices
Act as a technical point of escalation to troubleshoot and resolve complex customer issues with speed and precision