Principal Backend Engineer

About Zscaler Zscaler accelerates digital transformation to ensure our customers can be more agile, efficient, resilient, and secure. As an AI-forward enterprise, we are constantly pushing the envelope, leveraging the world’s largest security data lake to power our cloud-native Zero Trust Exchange platform. This innovation protects our 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 say, impact over activity. We seek innovators who actively use AI to amplify their impact and who thrive in an environment where we leverage intelligent systems to stay ahead of evolving threats. 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 be part of the team that’s helping to secure the AI age, we invite you to bring your talents to Zscaler and help shape the future of cybersecurity. We are looking for a Principal Backend Engineer to join our Analytics team based in Israel. This role reports to the Manager, Software Engineering. Avalor curates and contextualizes data from hundreds of security and business tools to help companies understand and address their riskiest problems. You will leverage our robust data platform and security modules to provide immediate benefits to customers while making the world a more secure place. Role Expectations Design, develop, and maintain scalable backend services within a cutting-edge microservices architecture using Scala and Java/Spring Boot Optimize performance, cost, and reliability of services in production while ensuring efficient data management across stores like Snowflake, Trino, and Apache Iceberg Drive innovation in semantic layers, query optimizations, and analytics capabilities to refine and expand our technology stack Operate seamlessly across product, UX, and frontend teams to deliver high-scale features from inception to production Mentor junior engineers and elevate the team’s technical capabilities through high-accountability partnership Success Profile You thrive in ambiguity. You're comfortable building the path as you walk it. You thrive in a dynamic environment, seeing ambiguity not as a hindrance, but as the raw material to build something meaningful. You act like an owner. Your passion for the mission fuels your bias for action. You operate with integrity because you genuinely care about the outcome. True ownership involves leveraging dynamic range: the ability to navigate seamlessly between high-level strategy and hands‑on execution. You are a problem‑solver. You love running towards the challenges because you are laser‑focused on finding the solution, knowing that solving the hard problems delivers the biggest impact. You are a high‑trust collaborator. You are ambitious for the team, not just yourself. You embrace our challenge culture by giving and receiving ongoing feedback—knowing that candor delivered with clarity and respect is the truest form of teamwork and the fastest way to earn trust. You are a learner. You have a true growth mindset and are obsessed with your own development, actively seeking feedback to become a better partner and a stronger teammate. You love what you do and you do it with purpose. Minimum Qualifications 5+ years of proven experience in backend development with a focus on building robust, tech‑driven solutions Experience designing and developing microservices architecture using tools such as AWS, Kubernetes, RabbitMQ, SQS, and Tilt Technical proficiency in Java and Spring Boot Strong communication skills and a demonstrated ability to solve complex problems in a dynamic environment A self‑driven approach to exploring new technologies and driving innovation Preferred Qualifications B.Sc. in Computer Science or a related field Experience in leading a team, a squad or a cross‑team effort/tech area. Expertise in query optimization, data analytics, and building semantic layers Benefits 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. 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. Pay Transparency: Zscaler complies with all applicable federal, state, and local pay transparency rules. Zscaler is committed to providing reasonable support 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. 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