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Senior System Design Engineer

11/06/2025
Fixed termBelgiumHybrid
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Job description

Position Overview:

As a Senior Zscaler Systems Design Engineer, you will leverage your technical expertise to architect, deploy, and support secure system solutions, primarily focused on Zscaler ZIA, ZPA, and Zero Trust Network Access (ZTNA) platforms. Your day-to-day will include translating business requirements into effective system designs, implementing robust security policies, and supporting a hybrid environment's secure connectivity.

  • Evaluate and translate requirements into technical designs that address evolving business needs.
  • Assess design alternatives, weighing their benefits and trade-offs to ensure optimal solutions.
  • Validate and support design compliance throughout deployment, ensuring all requirements are met and documented.
  • Configure and maintain Zscaler ZIA & ZPA environments for both internal and cloud-based applications.
  • Onboard applications and define Zero Trust access policies to uphold security standards.
  • Utilize Infrastructure as Code (IaC) tools (such as Ansible, Terraform) to automate configuration and deployment tasks.
  • Troubleshoot and resolve complex incidents and root causes related to connectivity, security, and performance.
  • Continuously research, innovate, and propose enhancements to existing systems, processes, and services.
  • Document technical solutions, procedures, and configurations, contributing to a robust knowledge base through technical writing.
  • Participate in an Agile delivery environment, collaborating closely with engineers, architects, and product owners on cross-functional projects.
  • Engage in on-call duty to support system reliability and business continuity.

This role requires a strong background in networking, information security, and system design. Scripting, CI/CD, and experience with regulated environments or Zscaler certifications are considered beneficial.

Profile description

We are looking for candidates who are passionate about system architecture and thrive in complex technical environments. Ideal applicants bring not only deep hands-on experience with system software and IT infrastructure, but also a highly analytical mindset. They excel at evaluating varied requirements, seeing both the technical details and the broader impact, and enjoy innovating to improve processes and solutions.

  • Adaptive and flexible: You flourish in dynamic, evolving technology landscapes and approach new challenges with a positive, proactive attitude.
  • Analytical thinking: You can quickly assess complex technical or business challenges, weighing benefits and trade-offs to propose effective solutions that meet rigorous requirements.
  • Collaborative spirit: You engage confidently with cross-functional teams, bridging gaps between architecture, engineering, and product ownership, and are eager to share knowledge through technical writing and documentation.
  • Result driven: You have a strong drive to ensure systems not only function as intended but are optimized for performance, security, and resilience.
  • Hands-on technical proficiency: Proven experience working with Zscaler ZIA, ZPA, and Zero Trust secures you as a subject matter expert, especially when onboarding applications and defining zero trust access policies.
  • Strong foundation in networking and security: Your solid background in enterprise networking, information security, and web security enables you to resolve complex incidents and perform in-depth root cause analysis.
  • Automation and modern engineering focus: Familiarity with Infrastructure as Code tools, such as Ansible or Terraform, and an Agile mindset prepare you to support efficient deployments and operations.
  • Effective communicator: You can clearly articulate technical concepts to various stakeholders and are committed to maintaining detailed, useful documentation.
  • Continuous learner: You keep current with technology advancements and are eager to earn new certifications or skills, particularly in regulated or high-security environments.

Candidates with additional scripting experience, relevant Zscaler certifications, or expertise in environments with strict compliance requirements will find a particularly good fit in this role. Fluency in English and a commitment to technical excellence are essentia

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