Senior Technical BA: Network & Security (12m Hybrid)

Ethos Beathchapman; Sydney; Hybrid; AUD 176,000 - 230,000; Full time

Job summary

Ethos Beathchapman seeks a Senior Technical Business Analyst to join a major network segmentation and cyber security transformation program in Parramatta. This hands-on BA role requires deep network and security infrastructure experience to work with Architects and SMEs to translate dependencies into precise segmentation requirements.

Key responsibilities include discovery of connectivity, defining segmentation rules, supporting DC/DMZ modernization, and advancing ZTNA and SASE initiatives.

Qualifications

• Deep network and security infrastructure experience
• Hands-on BA capable of working with Network & Security Architects

Responsibilities

• Perform detailed discovery and analysis of existing network connectivity and application dependencies
• Analyse raw network traffic information and translate findings into detailed connectivity matrices covering source/destination IPs, ports, protocols and required actions
• Define detailed requirements and rules supporting network segmentation and micro-segmentation
• Work closely with Network and Security Architects to challenge, validate and refine proposed technical solutions
• Engage SMEs across diverse business, application, research, facilities and OT environments to uncover detailed application and connectivity dependencies
• Support Data Centre and DMZ modernisation, including firewall routing, OoB management networks, load balancers, proxy uplift and IP address rationalisation
• Support workload micro-segmentation and the development of granular host-based isolation policies
• Analyse requirements for campus network segmentation, including zoned network architectures, SD-WAN, VRFs, NAC and ACL hardening
• Support SASE/SSE and Zero Trust initiatives across ZTNA, SWG, CASB and DLP
• Contribute to network observability uplift, including NTA, DPI and SNI capabilities
• Produce detailed technical requirements, process/traffic flows, traceability and supporting analysis throughout delivery

Job description

Ethos Beathchapman seeks a Senior Technical Business Analyst to join a major network segmentation and cyber security transformation program in Parramatta. This hands-on BA role requires deep network and security infrastructure experience to work with Architects and SMEs to translate dependencies into precise segmentation requirements.

Key responsibilities include discovery of connectivity, defining segmentation rules, supporting DC/DMZ modernization, and advancing ZTNA and SASE initiatives.