Principal Software Development Engineer - Golang/Python + Networking

Zscaler (NASDAQ: ZS) accelerates digital transformation so customers can be more agile, efficient, resilient, and secure. The Zscaler Zero Trust Exchange platform protects thousands of customers from cyberattacks and data loss by securely connecting users, devices, and applications in any location. Distributed across 200+ public data centers globally and thousands of private sites at the edge, the SASE-based Zero Trust Exchange is the world’s largest in-line cloud security platform. We believe the future of work is Human + AI and are building an AI-native enterprise where human potential is amplified by machine intelligence to solve the world’s hardest security challenges. Driven by deep customer obsession, we are committed to the mission, outcome, and to each other. We bring these commitments to life through three core behaviors: ownership and collaboration, trust through outcomes and impact, and a challenge culture with ongoing feedback. Ready to make an impact at the company pioneering security transformation in the AI era? Join us at Zscaler. Role We are looking for a Principal Software Development Engineer - Agentic Systems to join our team. This is a hybrid role based in Bangalore, reporting to the Director, Software Development Engineering in the Exposure Management & Security Operations department. In this role, you will lead the architecture and delivery of large-scale AI/ML infrastructure and production pipelines, mentor team members, and drive strategic technical initiatives across the organization. You bring a deep understanding of building and operating distributed AI systems at scale and translating business challenges into reliable, production-grade AI platforms. What you’ll do (Role Expectations) Lead the architecture and development of scalable AI/ML infrastructure, LLM serving platforms, and agentic workflows tailored for cloud-scale cybersecurity use cases Architect reusable platform foundations—including networking, security, authentic

Zscaler (NASDAQ: ZS) accelerates digital transformation so customers can be more agile, efficient, resilient, and secure. The Zscaler Zero Trust Exchange platform protects thousands of customers from cyberattacks and data loss by securely connecting users, devices, and applications in any location. Distributed across 200+ public data centers globally and thousands of private sites at the edge, the SASE-based Zero Trust Exchange is the world’s largest in-line cloud security platform. We believe the future of work is Human + AI and are building an AI-native enterprise where human potential is amplified by machine intelligence to solve the world’s hardest security challenges. Driven by deep customer obsession, we are committed to the mission, outcome, and to each other. We bring these commitments to life through three core behaviors: ownership and collaboration, trust through outcomes and impact, and a challenge culture with ongoing feedback. Ready to make an impact at the company pioneering security transformation in the AI era? Join us at Zscaler. Role We are looking for a Principal Software Engineer to join our team. This is a hybrid role, reporting to the Sr. Director of Software Engineering in the Platform Convergence department. In this role, you will design and scale high-performance backend services to drive the evolution of our converged platform. You will collaborate across teams to build robust distributed systems while mentoring engineers to uphold technical excellence. What you’ll do (Role Expectations) Design and build a low-latency, high-throughput data forwarding plane using Rust and async/await models for efficient service-oriented infrastructure Develop distributed, scalable systems with a heavy focus on concurrency, fault tolerance, and messaging Implement and maintain gRPC-based APIs and services to integrate forwarding plane capabilities with control and orchestration layers Optimize system performance through deep profiling across kernel-sp

Role Overview We’re looking for a Principal Software Engineer to help shape the next generation of our enterprise SaaS platform. You’ll combine deep hands-on engineering with technical leadership, helping teams design scalable systems, modernize our platform and solve complex engineering challenges. You’ll work across backend, frontend, cloud and AI technologies while defining technical direction and staying close to the engineering work. A key part of this role will be driving the adoption of AI-native software engineering practices, including AI-PDLC (AI-enabled Product Development Lifecycle) and Spec-Driven Development, using tools such as Cursor, Claude Code, GitHub Copilot and other AI coding and agentic development tools. This role is ideal for someone who enjoys solving complex problems, designing systems at scale, influencing architecture, establishing modern engineering practices and mentoring experienced engineers. Here’s a breakdown of what you’ll do Define and evolve the technical architecture of our SaaS platform and create high-level and low-level designs (HLD/LLD) for complex systems. Translate business and product requirements into scalable technical designs, implementation plans and engineering deliverables. Establish and drive Spec-Driven Development, using structured requirements, architecture specifications, API contracts, data models and acceptance criteria to guide development. Drive adoption of AI-PDLC, integrating AI across requirements, architecture, implementation, testing, code review, deployment and operations. Establish AI-assisted development workflows using Cursor, Claude Code, GitHub Copilot and similar AI coding agents, while maintaining engineering quality, security and architectural consistency. Design secure, scalable and reliable distributed, microservices and event-driven systems. Build and evolve backend services and APIs primarily using Node.js/TypeScript and Python, while remaining open to other modern technology stacks. Cont

About the Role We are looking for a Principal Software Engineer to shape how our AWS-based SaaS products are built, deployed, and operated. This is a hands-on technical leadership role for an engineer with prior software development experience and deep expertise in AWS, infrastructure as code, CI/CD, automation, and observability. You will partner with application, platform, product, and security teams to improve the full software delivery lifecycle. You will modernize existing applications by reducing unnecessary coupling and enabling components to be built, tested, released, and deployed independently where the architecture supports it. You will also set technical direction across teams, lead complex modernization initiatives, and mentor engineers in the Bangalore organization. What You Will Do DevOps Strategy and Technical Leadership Define DevOps and platform engineering standards, reference architectures, delivery patterns, and operational practices. Lead cross-team initiatives that improve delivery speed, reliability, security, and maintainability. Make and communicate technical decisions that balance modernization, customer impact, and service continuity. Mentor engineers, lead knowledge-sharing sessions, and contribute to hiring and technical interviews. Application Modernization and Software Engineering Apply software development experience to understand application architecture, dependencies, build systems, runtime behavior, and operational risks. Assess existing applications and reduce tight coupling between components, services, shared libraries, and deployment units where practical. Enable components to be built, tested, versioned, and deployed independently Improve configuration, secrets handling, health checks, logging, metrics, and graceful startup and shutdown behavior. Build automation and engineering tools using a programming or scripting language such as Python, Go, Groovy, or shell. CI/CD and Developer Experience Design, implement, and ope

Secure Every Identity, from AI to Human Identity is the key to unlocking the potential of AI. Okta secures AI by building the trusted, neutral infrastructure that enables organizations to safely embrace this new era. This work requires a relentless drive to solve complex challenges with real-world stakes. We are looking for builders and owners who operate with speed and urgency and execute with excellence. This is an opportunity to do career-defining work. We're all in on this mission. If you are too, let's talk. Device Identity and Access Organization The Device Identity and Access organization is at the forefront of Okta’s Zero Trust vision. As a foundational pillar within Okta Research and Development (ORD), our mission is to transform the device itself into a secure, trusted, and effortless identity factor. We are the teams responsible for ensuring users can seamlessly interact with their work from any endpoint, anywhere in the world. Our organization is composed of engineers who thrive at the intersection of deep client-side platform engineering and massive-scale distributed systems. The work we do secures millions of enterprise endpoints globally, prevents modern identity attacks, and fundamentally changes how people work by making world-class security completely invisible to the end user. Opportunity We seek a highly impactful and influential Software Engineer to join our macOS engineering team. The ideal candidate will leverage their deep expertise in macOS (or iOS) client software development to architect, build, and scale the critical macOS software and services at the heart of our security and identity platform. This is a high-visibility, hands-on opportunity to define the architectural vision, pioneer new capabilities, and drive the technical strategy to solve complex, company-wide challenges and shape the future of Okta's device identity ecosystem. You will act as a key technical leader—a player-coach and force multiplier—by setting the technical

Secure Every Identity, from AI to Human Identity is the key to unlocking the potential of AI. Okta secures AI by building the trusted, neutral infrastructure that enables organizations to safely embrace this new era. This work requires a relentless drive to solve complex challenges with real-world stakes. We are looking for builders and owners who operate with speed and urgency and execute with excellence. This is an opportunity to do career-defining work. We're all in on this mission. If you are too, let's talk. Device Identity and Access Organization The Device Identity and Access organization is at the forefront of Okta’s Zero Trust vision. As a foundational pillar within Okta Research and Development (ORD), our mission is to transform the device itself into a secure, trusted, and effortless identity factor. We are the teams responsible for ensuring users can seamlessly interact with their work from any endpoint, anywhere in the world. Our organization is composed of engineers who thrive at the intersection of deep client-side platform engineering and massive-scale distributed systems. The work we do secures millions of enterprise endpoints globally, prevents modern identity attacks, and fundamentally changes how people work by making world-class security completely invisible to the end user. Opportunity We seek a highly impactful and influential Software Engineer to join our Windows engineering team. The ideal candidate will leverage their deep expertise in Windows client software development, to architect, build, and scale the critical Windows software and services at the heart of our security and identity platform. This is a high-visibility, hands-on opportunity to define the architectural vision, pioneer new capabilities, and drive the technical strategy to solve complex, company-wide challenges and shape the future of Okta's device identity ecosystem. You will act as a key technical leader—a player-coach and force multiplier—by setting the technical s