Principal Software Engineer (ZDX)

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, which is found in our SASE and SSE offerings, 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. 

Our Engineering team built the world’s largest cloud security platform from the ground up, and we keep building. With more than 100 patents and big plans for enhancing services and increasing our global footprint, the team has made us and our multitenant architecture today's cloud security leader, with more than 15 million users in 185 countries. Bring your vision and passion to our team of cloud architects, software engineers, security experts, and more who are enabling organizations worldwide to harness speed and agility with a cloud-first strategy.

We are seeking an experienced and highly motivated Principal Software Engineer to join our ZDX engineering team. The ideal candidate will play a critical role in the development and delivery of a suite of client-facing and internal applications across the organization. This role is based in our San Jose, CA office and will be a hybrid (3 days a week in office) environment. You will be responsible for:

• Hands-on design and development of Zscaler ZDX Client, specifically on Mac and iOS platforms
• Providing technical leadership to the team: responsible for planning, architecture, design and development, operationalization and maintenance of high-volume software applications
• Collaborating with cross-functional teams and also reviewing and guiding the team on scalable and highly secure architecture that meets current and future business needs - coupled with a culture of innovation and continuous learning
• Developing and implementing policies and procedures to standardize development across a large team
• Continuously monitoring and assessing the development roadmap along with product management to recommend initiatives to improve performance, functionality, security, operationalization needs and alignment with the company’s future direction.

What We're Looking for (Minimum Qualifications)

• 8+ years of software development experience with programming expertise on Objective-C, Swift, C++
• Experience on client side development (especially networking aspects) on some of these platforms: Mac, iOS. Experience in development of end point side networking like VPN clients will be a plus
• Solid understanding of networking and network topologies: TCP/IP, http/s, UDP, TLS, PKI and other related protocols and products (DNS, DHCP, VPN, HA, routing and switching)
• Strong in CS fundamentals: High-performance Computing, Event-based programming, Multi-threading, Memory optimization, Fault Tolerance etc.
• Have experience with CI/CD and test automation: to deploy the software in an Agile mode and faster deployment through MDM or other related infrastructure

What Will Make You Stand Out (Preferred Qualifications)

• Prior experience leading teams in the APM, NPM or Digital Experience Monitoring space
• Strong understanding of network security technologies and knowledge of IPV6
• Prior experience working in a startup environment will be a plus

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