We are seeking a Pre-Sales Consultant with strong capabilities in network security and cyber architecture design. In this role, you will act as a subject matter expert (SME) across both cybersecurity and enterprise networking, supporting client engagements across government and enterprise sectors.
You will lead technical discovery, contribute to solution strategy, and take ownership of the technical design and delivery of Zscaler, Fortinet, CrowdStrike, Azure and Aruba-based solutions. As a trusted advisor, you’ll work closely with customers to shape their network and security architecture, solve complex infrastructure challenges, and define scalable, secure transformation paths aligned with Zero Trust, hybrid cloud, and modern enterprise infrastructure.
Job Description
About a23
At a23, we leverage our ‘now and next’ philosophy to deliver leading IT solutions that deliver results now, while building a foundation for whatever is next. A highly experienced IT partner, delivering quality outcomes through our expert people, great relationships, and fit-for-purpose technologies.
a23 is Canberra's headquartered with an office in Sydney. Its clients span the Education, Commercial, and Government sectors. a23 partners with leading IT and Cyber industry technology vendors to deliver agile, holistic, and fully customised solutions that ensure flexibility while remaining cost-effective.
Why work for a23?
a23 is a well-established Australian technology company experiencing strong growth, fueled by rising demand for our expertise in Cyber Security, Networking, Cloud, Data and AI, and Hybrid Cloud. We bring the agility and innovation of a start-up backed by the maturity, credibility, and delivery assurance of an established market leader.
Our teams deliver secure, scalable solution to government and enterprise client, blending deep technical capability with a client-first culture. Whether enabling AI-driven insights, transforming hybrid infrastructure, or securing mission-critical environments, a23 is trusted to deliver at a national scale.
Desired Skills and Experience
Role responsibilities
Acting as the primary SME for Zscaler architecture and implementation, leading end-to-end technical engagements and pre-sales conversations.
Designing and delivering SASE, SSE, and Zero Trust solutions, incorporating SWG, ZTNA, CASB, and DLP across hybrid enterprise environments.
Providing advanced technical support, insight, and direction during pre-sales activities—including solution scoping, design, and proposal development.
Working as a technical lead and trusted advisor across client engagements, contributing to security strategies, roadmaps, and enterprise IT transformation planning.
Assisting the Sales Team by delivering tailored presentations, demos, and proof-of-value engagements to articulate solution benefits and technical outcomes.
Collaborating with vendor partners (e.g. Zscaler, Fortinet, Aruba) to stay aligned on best practices, certification tracks, and customer success strategies.
Contribution to the progression of the a23 strategy through participation in individual, Practice and a23 objectives.
Positive contribution to the a23 culture, underpinned by behaviour aligned with the a23 Values.
Professional conduct and leadership of oneself to contribute to enhancing the reputation of a23.
Qualifications and Requirements
Experience
3+ years demonstrated experience as a Senior Pre-Sales Architect or Consultant, ideally within a Systems Integrator (SI) environment.
Hold or have the ability to obtain a AGSVA Security Clearance (i.e. Australian Citizen).
Deep technical knowledge and hands-on experience with Zscaler technologies (ZIA, ZPA, ZDX)—design, configuration, and solution delivery.
Experience leading complex engagements across network and security domains, with strong architecture and implementation skills in Zscaler.
Experience with M365 and Azure is desirable.
Technical Skills & Certifications
Expertise in network protocols and cybersecurity solutions, including firewalls, email security, endpoint protection, SIEM, SASE, and EDR/MDR/TDR.
Familiarity with security frameworks and compliance standards such as NIST, ISO 27001, Essential 8 and Zero trust.
Microsoft 365 Security / Azure Security Services
Certifications such as ZCCA / ZCCP, Fortinet NSE, or Microsoft Security are highly regarded.
Communication & Presentation Skills
Excellent verbal and written communication skills, with the ability to simplify complex technical concepts.
Excellent communication and presentation skills, with proven experience engaging senior technical and business leaders—translating complex customer needs into clear, actionable solutions tailored to both technical and executive audiences.
Experience with business requirements gathering, architecture planning, and documentation development.
A23 Policy Handbook
On commencing with a23, all employees are provided with the a23 Policy Handbook and asked to sign their commitment to adhering to its policies. All a23 workers are to take all reasonable care of your own health and safety and ensure that your actions do not adversely affect the health and safety of others.
You are to report any work health and safety concerns promptly and comply with all reasonable instruction from Aa3 management. You are to ensure that you are aware and understand your responsibilities in the workplace according to the WHS Act and the accompanying A23 Policy Handbook.
a23 is an equal opportunity employer committed to a diverse, inclusive, healthy and safe work environment. We are dedicated to attracting, retaining and developing our people regardless of gender identity, ethnicity, sexual orientation, disability, age and neurodiversity. We invite people of all backgrounds and identities to submit their application. Applications are strongly encouraged from the Aboriginal and/or Torres Strait Islander, LBGTQIA+ and neurodivergent communities.