Security Support Engineer (Level.3 / Zscaler)

Xalient

  • United Kingdom
  • Permanent
  • Full-time
  • 24 days ago
Xalient is a global boutique specialising in the convergence of identity-driven security and secure networking. We help the world’s leading enterprises stay secure, connected, and ready for the future - bringing together deep technical expertise, business insight, and AI-powered innovation to solve the complex challenges of modern digital businesses.Independent by design and driven by a passion for exceptional service, Xalient combines global reach with the agility and customer intimacy of a boutique provider. Our advisory, professional, and managed services teams operate across the UK, US, EMEA and Asia - delivering fast, tangible outcomes and long-term impact.Xalient is trusted by forward-thinking enterprises to reduce risk, optimise performance, and navigate today’s digital complexity with confidence.We are seeking an experienced Level 3 Security Support Engineer to join our Zscaler Managed Services team. This role is responsible for advanced troubleshooting, implementation, and optimization of Zscaler security solutions. As a key escalation point, you will work closely with clients, internal teams, and vendors to ensure seamless security operations.What you’ll be doing
  • Provide Level 3 support for Zscaler Internet Access (ZIA) and Zscaler Private Access (ZPA) solutions.
  • Troubleshoot complex issues related to connectivity, policy enforcement, authentication, and performance.
  • Lead root cause analysis and resolution of critical incidents.
  • Implement and optimize Zscaler configurations in alignment with security best practices.
  • Collaborate with vendors and internal teams to resolve escalated issues.
  • Assist in designing and deploying Zscaler solutions for new implementations.
  • Develop and maintain documentation for configurations, troubleshooting procedures, and best practices.
  • Conduct technical training sessions for Level 1 and Level 2 support teams.
  • Monitor system performance and recommend enhancements.
  • Stay updated on Zscaler product updates and industry trends.
What you’ll need
  • 5+ years of experience in network security or cloud security engineering roles.
  • Expertise in Zscaler technologies, including ZIA, ZPA, and Zscaler Client Connector.
  • Strong understanding of networking protocols (TCP/IP, DNS, HTTP/HTTPS, GRE, IPsec, etc.).
  • Experience with authentication protocols (SAML, OAuth, LDAP, Active Directory, etc.).
  • Familiarity with firewall policies, proxy configurations, and secure web gateways.
  • Proficiency in troubleshooting tools such as Wireshark, packet capture, and Zscaler logs.
  • Experience in integrating Zscaler with SD-WAN, VPN, and cloud environments.
  • Excellent problem-solving skills and the ability to work under pressure.
  • Strong communication skills with experience in customer-facing roles.
Preferred Qualifications:
  • Zscaler Certified Cloud Administrator (ZCCA) or Zscaler Certified Cloud Professional (ZCCP) preferred.
  • Experience with scripting and automation (Python, PowerShell, etc.).
  • Knowledge of other security technologies (CASB, DLP, Zero Trust frameworks, etc.).
  • Experience in a managed services or enterprise IT support environment.
Why Join Us?
  • Work with cutting-edge cloud security technologies.
  • Collaborative and dynamic work environment.
  • Opportunities for professional growth and certifications.
  • Competitive salary and benefits package.
  • Flexible benefits fund
  • 25 days annual leave, plus bank holidays
  • 1 day extra holiday for your birthday
  • Pension
  • Private medical insurance
Equal Opportunities StatementWe are an equal opportunities employer and welcome applications from all suitably qualified persons regardless of their race, sex, disability, religion/belief, sexual orientation, gender reassignment, marriage and civil partnerships, pregnancy or maternity or age.

Xalient