Designated Support Engineer III

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 Designated Support Engineer III to join our team. This is a Hybrid role based in Escazu, reporting to the Manager, Focal Support in the Support department. You will function as the highest level of technical support within the TAC, responsible for resolving the most complex and critical issues escalated from Level I and Level II support engineers.

What you’ll do (Role Expectations)

• Provide second line phone/email consultation to independently debug complex security/network problems
• Interface with Engineering and assist the customer with testing or troubleshooting
• Reproduce customer issues to verify problems and provide feedback to Engineering and Operations teams
• Create entries in our technical support online database to accurately document any incident resolution that is not found in our knowledge base
• Understand the product direction and customer use-cases and provide input on product and code changes through all points of the product cycle

Who You Are (Success Profile)

• 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. You adapt to what’s needed, navigating seamlessly between high-level strategy and hands-on execution.
• You are a problem-solver. You seek out challenges because you are energized by finding solutions, 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 customer-obsessed. You build deep empathy for the customer—both internal and external—and anchor your decisions in solving their real-world problems. You champion their needs from start to finish, knowing their success is our success.
• You operate with urgency. You understand that in a high-growth environment, speed and quality are not mutually exclusive. You have a relentless focus on execution and a bias for action, delivering high-impact results quickly to win for the customer and the team.

What We’re Looking for (Minimum Qualifications)

• Demonstrated curiosity and active exploration of AI tools, with a proven history of integrating new technologies to enhance daily workflows and augment problem-solving
• 5+ years of support and networking experience, including general firewalls and packet filtering troubleshooting
• Proficient in using Wireshark, Fiddler, MTR, and traceroute to analyze network and application protocols, isolate faults, diagnose packet loss, and resolve unexpected session resets
• Hands-on experience configuring and troubleshooting GRE and IPSec VPN tunnels, combined with leveraging PAC files to optimize network pathing and traffic flow
• Deep expertise in enterprise authentication (SAML, Kerberos), application-layer mechanics ( methods), IPv4/IPv6 routing, and DNS administration

What Will Make You Stand Out (Preferred Qualifications)

• Demonstrate a proven ability to leverage AI technologies and workflows to drive measurable operational efficiency
• Prior knowledge of Forward Proxy and cloud environments like AWS and Azure
• Direct experience working in Firewall and VPN/Zero Trust environments

#LI-IA1 #LI-Hybrid

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 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.