Network Engineer with Zscaler Experience

Sanderson Government & Defence; England; On-site; GBP 70,000 - 110,000; Full time

Job summary

A leading defense and government services firm is seeking a Network Engineer with Zscaler experience to provide technical expertise and enhance the organization's secure access. The role involves optimizing Zscaler solutions and improving operational performance. Candidates must possess hands-on experience with Zscaler technologies and a strong understanding of security principles. This mid-senior level position offers a contract role focused on information technology.

Qualifications

• Proven hands-on experience with Zscaler technologies including advanced configuration.
• Strong understanding of security principles and cloud architecture.
• Experience in large-scale enterprise environments.
• Ability to analyze logs, troubleshoot connectivity issues, and optimize performance in distributed environments.

Responsibilities

• Lead the design, configuration, and optimization of Zscaler solutions.
• Conduct assessments of existing Zscaler deployments.
• Deliver coaching and technical uplift to teams.
• Troubleshoot complex Zscaler-related issues.
• Collaborate with network, security, identity, and infrastructure teams for seamless integration.
• Troubleshoot complex issues, perform root-cause analysis, and provide advanced support.
• Contribute to documentation, governance, and lifecycle management for Zscaler configurations.
• Support platform improvements, automation efforts, and best-practice adoption.

Skills

Zscaler Internet Access (ZIA)

Zscaler Private Access (ZPA)

Zscaler Digital Experience (ZDX)

Zero Trust architecture

Networking protocols (TCP/IP, DNS, HTTP/HTTPS)

VPN technologies

Identity integration (SAML, OAuth, LDAP)

Scripting or automation (PowerShell, Python)

Strong communication skills

Education

Relevant certifications such as Zscaler ZCCA-IA/ZCCA-PA, CCNP, CISSP

Job description

Network Engineer with Zscaler Experience

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Network Engineer with Zscaler Experience

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Purpose of the Role

The Zscaler Technical Specialist provides deep technical expertise in Zscaler technologies to enhance and optimize the organization’s secure access and cloud security posture. Working closely with Engineering, Network, and Security teams, this role uplifts internal capability, improves configuration and deployment practices, and ensures the Zscaler platform is fully leveraged to deliver secure, scalable, and high-performance connectivity across global Diplomatic and Development Services.

This position plays a key role in driving best practices, reducing technical debt, and aligning Zscaler capabilities with strategic business objectives.

Key Responsibilities

• Lead the design, configuration, and optimization of Zscaler Internet Access (ZIA), Zscaler Private Access (ZPA), and Zscaler Digital Experience (ZDX).
• Conduct in-depth assessments of existing Zscaler deployments to identify gaps and opportunities for enhancement.
• Develop and implement policies, rules, and workflows to improve security effectiveness, user experience, and operational performance.
• Deliver knowledge-transfer sessions, coaching, and technical uplift to strengthen the Engineering Team’s capability in deploying and managing Zscaler solutions.
• Collaborate with network, security, identity, and infrastructure teams to ensure seamless integration with enterprise systems and architectures.
• Troubleshoot complex issues, perform root-cause analysis, and provide advanced support for escalated incidents related to Zscaler services.
• Contribute to documentation, governance, compliance, and operational standards for Zscaler configuration and lifecycle management.
• Support ongoing platform improvements, automation efforts, and best-practice adoption to enhance reliability and scalability.

Required Skills & Experience

• Proven hands-on experience with Zscaler Internet Access (ZIA), Zscaler Private Access (ZPA), and Zscaler Digital Experience (ZDX), including advanced configuration and policy design.
• Strong understanding of Zero Trust architecture, secure web gateways, and cloud security principles.
• Expertise in networking protocols (TCP/IP, DNS, HTTP/HTTPS), VPN technologies, and identity integration (SAML, OAuth, LDAP).
• Familiarity with firewall policies, proxy architecture, SSL inspection, and traffic forwarding methods.
• Experience integrating Zscaler with identity providers (e.g., Azure AD, Okta) and endpoint management solutions.
• Ability to analyze logs, troubleshoot complex connectivity issues, and optimize performance across distributed environments.
• Knowledge of scripting or automation (PowerShell, Python, APIs) for configuration, reporting, or workflow automation (highly desirable).
• Strong communication skills with the ability to explain technical concepts to varied audiences and uplift team capability.
• Relevant certifications such as Zscaler ZCCA-IA/ZCCA-PA, CCNP, CISSP, or cloud certifications (Azure, AWS).
• Experience in large-scale or global enterprise environments.
• Strong documentation, governance, and continuous improvement mindset.

Seniority level

Mid-Senior level

Employment type

Contract

Job function

Information Technology

Industries

Defense and Space Manufacturing and Government Relations Services

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