Principal Software Engineer - Branch Connector

Company Description

Zscaler (NASDAQ: ZS) accelerates digital transformation so that customers can be more agile, efficient, resilient, and secure. The Zscaler Zero Trust Exchange is the company’s cloud-native platform that protects thousands of customers from cyberattacks and data loss by securely connecting users, devices, and applications in any location. 

With more than 10 years of experience developing, operating, and scaling the cloud, Zscaler serves thousands of enterprise customers around the world, including 450 of the Forbes Global 2000 organizations. In addition to protecting customers from damaging threats, such as ransomware and data exfiltration, it helps them slash costs, reduce complexity, and improve the user experience by eliminating stacks of latency-creating gateway appliances. 

Zscaler 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. Zscaler’s purpose-built security platform puts a company’s defenses and controls where the connections occur—the internet—so that every connection is fast and secure, no matter how or where users connect or where their applications and workloads reside.

Job Description

As a Principal Software Engineer, you will be working on the requirements, design and code components of a very large scale distributed system with a keen sense for high performance and scalability, troubleshoot issues with  hawkish acumen, work with Operations and Support (as needed) to help manage a healthy cloud and happy customers and at the end of the day – display accountability and a sense of ownership in areas assigned to you.

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. 

What you'll be doing...

As a Principal Software Engineer - Branch Connector, you will play a crucial role in designing, developing, optimizing and enhancing functionality for the  ZScaler Zero Trust Branch Connector data path applications.
  You will work closely with a cross-functional team of software engineers, architects, and product managers to deliver high-performance and scalable solutions that meet the demands of our customers. You will lead the design, development, and maintenance of the  datapath software, focusing on high-performance, low latency data forwarding and packet processing. You will conduct thorough code reviews to maintain code quality and maintain   documentation for the code, including design specifications and user guide..

The Zero Trust Branch Connector provides Zero Trust Security for users and application traffic originating from a remote branch to internet, cloud or another remote branch or data center. The Branch Connector eliminates the network attack surface by establishing direct branch-to-internet and branch-to-private app connections using a full proxy architecture. It also simplifies branch communications by eliminating complex routing, virtual private networks (VPNs), and firewalls while allowing for flexible forwarding and simple policy management by using the proven Zscaler Internet Access (ZIA) and Zscaler Private Access (ZPA) policy framework.

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.

Qualifications

• BS or MS degree in CS/CE or equivalent is required
• Minimum 15 years software development experience in building large-scale commercial networking and security applications
• Strong hands-on programming in C and in depth knowledge in Data-Structures and Algorithms. python/go-lang is a plus
• Hands on Experience in troubleshooting networking issues using tools like Wireshark, tcpdump, curl, wget etc.
• Strong knowledge of networking protocols and services - DNS, HTTP, TCP/IP, SSL/TLS
• Experience in security technologies like firewall, IPS, Authentication and networking technologies like VPN/IPSec and data plane traffic forwarding 
• Good Unix/Linux Kernel & file system knowledge
• Good working experience in virtual appliance platforms like ESXi Hypervisor,