Senior Threat Hunter

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. Role We are looking for a Senior Threat Hunter to join our team . This is a remote in Costa Rica role, reporting to the Director of Threat Hunting in the Zscaler Threat Hunting team department . This is a customer facing role, responsible for delivering white-glove threat hunting deliverables to customers . As a Threat Hunter, you will split your time between exploring Zscaler customer telemetry to identify potential threats and interacting directly with customers to discuss these potential threats . For this position, we’re looking for someone to work standard business working hours with occasional on-call duties . What you’ll do (Role Expectations) Leverage deep, hands-on expertise in threat hunting, incident response, and security operations to proactively hunt, detect, defend, and advise for managed threat hunting customers Serve as a trusted security advisor to customers by writing and delivering tailored threat hunt findings, executive presentations, and strategic recommendations to a range of stakeholders from SOC analysts to CISOs Analyze customer web proxy telemetry against modern adversary Tactics, Techniques, and Procedures (TTPs) by utilizing SIEM-like tools (e.g. Splunk, Microsoft Sentinel, ElasticSearch) and by writing code (e.g. Python and SQL) to implement high-fidelity detection logic and actionable hunt hypotheses Review the output of detection engineering systems and the work of other analysts to continually improve our customer facing deliverables Who You Are (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 ow