Staff Machine Learning Engineer

About Zscaler

Zscaler accelerates digital transformation so our customers can be more agile, efficient, resilient, and secure. Our cloud native Zero Trust Exchange platform protects thousands of customers from cyberattacks and data loss by securely connecting users, devices, and applications in any location.

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 value high-impact, high-accountability with a sense of urgency where you're enabled to do your best work and embrace your 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 and help shape the future of cybersecurity.

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 Staff Machine Learning Engineer to join our Digital Experience team. This role is critical to shape the next generation of Digital Experience with world class tools to identify the insights, root causes, and also enable the agentic AI functionalities. This will influence the way the digital experience monitoring, agentic AI will be built. Reporting to the Director, you'll be responsible for:

• Building ML models and services that transform large-scale telemetry into actionable insights and precise root-cause attribution
• Designing and implementing agentic-AI capabilities (LLM/agent workflows, tools, and policies) that diagnose and remediate user experience issues
• Owning the end-to-end lifecycle: data pipelines, feature stores, model training/evaluation, real-time inference, and production reliability
• Partnering with product, data, and platform teams to define strategy, metrics, and experiments for next-gen digital experience monitoring

• BS in Computer Science (or related) with 5+ years, or MS/PhD in Computer Science (or related) with 4+ years solving real-world problems using AI/ML and distributed systems (Python preferred; Java/Go/Rust a plus)
• Exceptional problem-solving skills driven by first-principles thinking, applying expertise in programming, data, and machine learning
• Proven experience across the full ML model lifecycle: building, deployment, monitoring, and iterative optimization
• Proficiency with Generative AI technologies, frameworks, and tools (e.g., LangChain/LangGraph, CrewAI)
• Track record of building and deploying micro-services based distributed systems

• Experience with root-cause analysis models and anomaly detection on large-scale datasets
• Familiarity with networking (TCP/IP, DNS, HTTP—L4–L7) and/or observability data (metrics, logs, traces, events)
• Knowledge of in-stream/streaming anomaly detection frameworks (e.g., Apache Flink, Spark Streaming)

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At Zscaler, we are committed to building a team that reflects the communities we serve and the customers we work with. We foster an inclusive environment that values all backgrounds and perspectives, emphasizing collaboration and belonging. Join us in our mission to make doing business seamless and secure.

Our Benefits program is one of the most important ways we support our employees. Zscaler proudly offers comprehensive and inclusive benefits to meet the diverse needs of our employees and their families throughout their life stages, including:

• Various health plans
• Time off plans for vacation and sick time
• Parental leave options
• Retirement options
• Education reimbursement
• In-office perks, and more

Learn more about Zscaler's Future of Work strategy, hybrid working model, and benefits here.

By applying for this role, you adhere to applicable laws, regulations, and Zscaler policies, including those related to security and privacy standards and guidelines.

Zscaler is committed to providing equal employment opportunities to all individuals. We strive to create a workplace where employees are treated with respect and have the chance to succeed. All qualified applicants will be considered for employment without regard to race, color, religion, sex (including pregnancy or related medical conditions), age, national origin, sexual orientation, gender identity or expression, genetic information, disability status, protected veteran status, or any other characteristic protected by federal, state, or local laws. See more information by clicking on the Know Your Rights: Workplace Discrimination is Illegal link.

Pay Transparency

Zscaler complies with all applicable federal, state, and local pay transparency rules.

Zscaler is committed to providing reasonable support (called accommodations or adjustments) in our recruiting processes for candidates who are differently abled, have long term conditions, mental health conditions or sincerely held religious beliefs, or who are neurodivergent or require pregnancy-related support.