Zero Trust Microsegmentation Architect

Showtime Consulting; Sydney; On-site; AUD 140,000 - 200,000; Full time

Job summary

Showtime Consulting is seeking an experienced Microsegmentation Technical Expert to drive a major cybersecurity and network security transformation across a large enterprise. You will lead POC, design, implementation, and optimisation of microsegmentation solutions with a focus on least-privilege access and Zero Trust.

You will collaborate with cybersecurity, network, cloud, and infrastructure teams to define segmentation strategies and secure-by-design policies, while delivering architecture

Qualifications

• 5+ years' experience in network engineering, security engineering, Zero Trust, or microsegmentation environments.
• Hands-on experience implementing microsegmentation solutions such as Illumio, Cisco Secure Workload, ColorTokens, or equivalent platforms.
• Strong understanding of Zero Trust Architecture and identity-based security models.
• Deep knowledge of enterprise networking technologies including TCP/IP, DNS, HTTP, routing, switching, and network security.
• Experience with service provider and enterprise networking technologies including MPLS, BGP, OSPF, and IS-IS.
• Experience designing and implementing firewall policies, zone-based security, and traffic segmentation controls.
• Strong understanding of security frameworks including NIST 800-207, ISO 27001, and CIS Controls.
• Experience integrating security platforms with SIEM, EDR, NDR, and security monitoring solutions.
• Exposure to cloud and software-defined networking environments.
• Experience with virtualisation and container technologies including VMware, OpenShift, Kubernetes, and Docker.

Responsibilities

• Support the design, Proof of Concept (POC), and implementation of enterprise microsegmentation solutions.
• Develop segmentation strategies aligned with Zero Trust and secure-by-design principles.
• Design and implement security policies across applications, workloads, and infrastructure environments.
• Produce High-Level and Low-Level Design documentation (HLD/LLD).
• Define trust boundaries, security zones, traffic flows, and segmentation requirements.
• Implement and optimise microsegmentation technologies including Illumio, Cisco, ColorTokens, or similar platforms.
• Configure and maintain least-privilege security controls to reduce attack surface and lateral movement risks.
• Integrate segmentation platforms with firewalls, identity services, SIEM platforms, and broader security tooling.
• Troubleshoot network connectivity, routing, forwarding, and policy enforcement issues.
• Support Zero Trust Architecture initiatives and cybersecurity uplift programs.
• Conduct technical assessments, threat modelling, and security design reviews.
• Work closely with network engineering, cloud, infrastructure, and application teams to deliver secure outcomes.
• Provide technical guidance and SME expertise on microsegmentation and Zero Trust principles.
• Develop and maintain architecture diagrams, operational procedures, and technical documentation.
• Engage with technology vendors, stakeholders, and support teams to resolve complex technical challenges.

Skills

Network engineering

Security engineering

Zero Trust

Microsegmentation

TCP/IP

DNS

HTTP

Routing

Switching

Security frameworks (NIST 800-207, ISO

Tools

Illumio

Cisco Secure Workload

ColorTokens

VMware

OpenShift

Kubernetes

Docker

Job description

Showtime Consulting is seeking an experienced Microsegmentation Technical Expert to drive a major cybersecurity and network security transformation across a large enterprise. You will lead POC, design, implementation, and optimisation of microsegmentation solutions with a focus on least-privilege access and Zero Trust.

You will collaborate with cybersecurity, network, cloud, and infrastructure teams to define segmentation strategies and secure-by-design policies, while delivering architecture