Principal Software Engineer - API Tooling & Frameworks

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're looking for an experienced Principal Software Engineer to join our API Team. Reporting to the Director, Software Development Engineering, you'll be responsible for:

• Lead the design and implementation of advanced API tooling and frameworks for seamless UI creation and integration with Zscaler's API services.
• Develop client SDKs with easy-to-use interfaces for data binding and UI component integration, utilizing modern UI frameworks and design patterns.
• Improve UI and API integration by leveraging new approaches, such as generative AI, to automate and enhance UI component development.
• Engage in hands-on coding to build tools that enhance developer productivity and streamline the API development process.
• Apply domain-driven design principles and mentor engineering teams on best practices, fostering collaboration with UI/UX engineers to create scalable, maintainable, and high-performance backend systems.

What We're Looking for (Minimum Qualifications)

• Proficiency plus 10+ years of experience in at least one programming language (Go, Java, C++, Rust, JavaScript, etc.).
• Experience (7+ years) in building frameworks and tooling for API and UI development, with a focus on enhancing developer experience and productivity.
• Experience with API design standards, best practices (e.g., Swagger/OpenAPI 3.0, REST, JSON, gRPC, Protobuf), and API-first design principles.
• Proficiency in modern UI design patterns (MVC, MVVP, etc.) and experience with popular front-end frameworks (React, Angular, etc.).
• Work with UI/UX engineers and product managers to align development efforts with user needs and team goals.

What Will Make You Stand Out (Preferred Qualifications)

• Experience developing client SDKs and tooling for data binding, UI integration, Authn/Authz, using JavaScript, TypeScript, or similar languages.
• Expertise in API tooling and frameworks supporting rapid UI development, with a focus on integration, automation, and testing.
• Proficiency with domain-driven design (DDD), container technologies (Kubernetes, Docker), and cloud platforms (AWS, GCP).