- Mallesons values, respects and invests in their technology and Technology team. With a forward-thinking, commercially astute leadership team, Mallesons continues to be innovative and future focused. Grow your career with us.
- If you are an experienced network and security leader who enjoys combining technical depth, service ownership, people leadership and operational governance, we would like to hear from you.
- Join 2026 winner of 'Most Innovative Law Firm in the Asia-Pacific' at the Financial Times Innovative Lawyers Asia-Pacific Awards

Who are we? We are Mallesons. The top-tier independent firm from Australia, a full-service firm trusted on the most complex and consequential matters across our region and around the world. We've been part of Australia's story for almost 200 years and acknowledge Aboriginal and Torres Strait Islander peoples as the traditional owners and custodians of these lands and waters. Our independence gives us the flexibility to combine our extensive top tier full-service capability with the best advisers in every market. With deep expertise, collective judgment and genuine collaboration, we cut through complexity so our clients can move forward with confidence and make more happen.

Role Detail

As part of our pivotal wider Technology team, with over 100 nationally, you will be valued and respected.

Reporting to the Head of Technology Operation, you will lead the firm's network security operations capability. You will be responsible for the strategy, architecture, roadmap, delivery, operational management, resilience and continuous improvement of enterprise network infrastructure, cloud connectivity, network security services and related operational controls.

Working in close partnership with Information Security, you will ensure network and security platforms support the firm's cyber resilience and business continuity requirements.

Based in the Sydney CBD office, this role combines people leadership, technical direction, service ownership, project delivery and operational governance. You will ensure Mallesons' network and security platforms remain stable, secure, resilient and aligned to the firm's business needs.

Summary of key elements to the role:

- Lead enterprise network and security services across offices, data centres and cloud environments.
- Own service reliability, resilience, risk management and continuous improvement initiatives.
- Provide leadership during major incidents, cyber events and high-impact service outages.




- Partner with Information Security to strengthen cyber resilience and operational controls.
- Manage technology vendors, service providers and key infrastructure projects.
- Lead, coach and develop the Network and Security team

About You Mallesons has a high performance, high expectation culture. To set yourself up for success, you will be a practical and commercially minded technology leader who can balance operational excellence, cyber resilience, stakeholder expectations and team leadership. You will bring a growth mindset and understand how robust network and security operations support client confidentiality, firm resilience and reliable service delivery.

You are confident leading through complexity, communicating clearly with stakeholders and supporting your team through change with context, direction and timely communication.

You also bring

- Experience as a technology leader with 10+ years in enterprise network, infrastructure and security operations, including leading and developing technical teams.
- Deep expertise across network engineering, security operations and cloud connectivity, with strong knowledge of LAN/WAN, SD-WAN, firewalls, VPNs, remote access and network security controls.
- Enterprise-scale expertise across Cisco networking (Switching, Routing, Meraki and ISE), Palo Alto Networks, Azure Networking and hybrid connectivity, SD-WAN and VMware NSX, with a focus on modernising network architecture, security and connectivity.
- Experience with Zero Trust architectures, SASE/SSE, ZTNA, CASB, DLP and enterprise network access control solutions.
- Proven ability to drive operational excellence through incident management, service improvement, risk management, vulnerability remediation and ITIL-based practices, with experience working with ITSM platforms such as Jira Service Management
- Strong understanding of cyber security principles, security monitoring, threat detection and working closely with Information Security teams to support cyber resilience.
- Experienced in managing vendors, telecommunications providers, technology lifecycles and complex infrastructure projects.
- Strong stakeholder engagement, communication and leadership skills,



with the ability to balance strategic initiatives and day-to-day operational priorities.
- Industry certifications such as CCNP, CISSP, CISM or equivalent.
- Knowledge of security frameworks such as ISO 27001, NIST and Essential Eight.
- Experience leading technology transformation, resilience, automation or security uplift programs.
- Background within a professional services or legal environment.
- SIEM/SOC and vulnerability management tools; DNS, DHCP, IPAM and network access control technologies
- Automation, scripting and infrastructure-as-code tooling

Flexibility for after hours support and weekend work may be required from time to time to support critical incidents and response, major service restoration, maintenance windows, disaster recovery activities and project delivery.

Next Steps

Please click 'Apply Now' to apply online with your cover letter summarising why you're applying and your resume to support your experience.

Applications close COB Friday 28th August 2026.

Why work with us?

We build careers that go everywhere. Mallesons is a special place to work where anything is possible, ambitions are limitless and diversity and inclusion play an important role. It's a place where you will collaborate with exceptional colleagues and clients, where you will sharpen your edge and support others to do the same, where you will make a difference you can be proud of.

You will have access to a suite of wellbeing initiatives, benefits, policies and process that will support you to achieve your career goals.

Together we learn. Together we master. Together we lead.

Diversity and Inclusion

Mallesons is an equal opportunity employer and is committed to diversity and inclusion. We encourage applications from Aboriginal and Torres Strait Islander peoples, and people from diverse backgrounds. We welcome, value, support and harness the positive benefits that people's different life experiences bring, especially as they relate to gender, sexual identity, culture, faith, disability and life stages.

If you are unsure if you meet all criteria for this role, but have a passion for delivering high quality work, developing your skills and realising your full potential, then we encourage you to apply and have a further conversation about how you could fit at Mallesons.

We have a range of inclusive hiring practices - if you would like to seek workplace adjustments to complete your application please contact the Recruitment contact for this role or email [email protected]

📌 Network and Security Manager - Top tier law firm (Sydney, CBD)
🏢 Mallesons
📍 Sydney