Senior Systems, Network & Security Engineer

About the Role
We are seeking an experienced Senior Systems, Network & Security Engineer  to lead the design, implementation, and optimisation of complex IT infrastructure and cybersecurity solutions across diverse client environments. This role is suited to a highly skilled technical professional who thrives on solving complex challenges, driving operational improvements, and delivering exceptional outcomes for customers.
You will play a key role in project delivery, technical leadership, infrastructure management, cybersecurity initiatives, and service escalation support. Working closely with internal teams and clients, you will ensure technology environments remain secure, scalable, and aligned with business objectives.
About the Client
You will be working with an award-winning Australian IT services provider delivering end-to-end technology solutions, managed services, cybersecurity, and ongoing IT support to businesses across a wide range of industries. The organisation is recognised for its customer-first approach, technical expertise, and commitment to delivering proactive technology solutions that help clients focus on growing their businesses.
With a strong culture of continuous improvement and technical excellence, the company offers the opportunity to work on diverse projects while collaborating with highly skilled professionals across infrastructure, cloud, security, and managed services.
Ideal Profile
Experience & Technical Expertise
Extensive experience working within IT services, managed services, or senior infrastructure support environments
Proven expertise in designing, implementing, and supporting complex IT systems and infrastructure solutions
Strong understanding of cybersecurity principles, vulnerability management, and risk mitigation
Experience supporting corporate, operational technology, and customer-facing environments
Demonstrated success delivering technical projects from planning through implementation
Infrastructure & Security Technologies
Strong hands-on experience with: Microsoft IntuneThreatLockerCisco DuoMobile Device Management (MDM) platformsCisco MerakiAzure Virtual MachinesRemote Desktop Services (RDS) environmentsVeeam Backup solutionsImmyBot
Advanced PowerShell scripting and automation experience
Automation & Continuous Improvement
Experience leveraging automation to improve operational efficiency
Exposure to REWST automation platforms is highly desirable
Experience with Microsoft Power Automate (Flow) is advantageous
Ability to identify and implement process improvements across infrastructure and service delivery environments
Communication & Leadership
Exceptional written and verbal communication skills
Strong stakeholder management and customer engagement capabilities
Ability to translate complex technical concepts into business-friendly language
Experience mentoring technical teams and acting as a senior escalation resource
Personal Attributes
Strong analytical, troubleshooting, and problem-solving abilities
Ability to assess risk and make informed technical decisions
Customer-focused mindset with a commitment to service excellence
Ability to work independently while collaborating effectively within a team
Strong organisational skills with the ability to manage multiple projects simultaneously
Responsibilities
Infrastructure Design & Implementation
Design, implement, and optimise complex infrastructure solutions across customer and internal environments
Support cloud, server, networking, and endpoint management initiatives
Ensure infrastructure solutions are secure, scalable, and aligned with business requirements
Participate in the planning and delivery of strategic technology projects
Cybersecurity & Risk Management
Lead and support cybersecurity initiatives across client environments
Manage vulnerability remediation and security improvement programs
Implement and maintain security technologies and controls
Conduct risk assessments and provide recommendations to strengthen security posture
Project Delivery & Technical Leadership
Deliver internal and customer-facing project work across infrastructure, security, automation, and operational initiatives
Conduct project scoping, solution design, and risk assessments
Collaborate with stakeholders to ensure successful project outcomes
Support pre-sales activities by providing technical expertise and solution recommendations
Service Escalation & Operational Support
Act as a senior escalation point for Service Desk and support teams
Troubleshoot and resolve complex technical issues across infrastructure and cloud environments
Provide guidance and mentorship to technical team members
Ensure operational stability and service excellence across managed environments
Automation & Process Improvement
Identify opportunities to automate repetitive tasks and operational workflows
Develop automation solutions using scripting and modern management platforms
Drive continuous improvement initiatives that enhance efficiency and service quality
Contribute to operational best practices and technical standards
How we take care of our team
💰 Get paid in Australian Dollars
🏥 Medical insurance from day one for you + spouse (or parents if unmarried)
🩺 Generous OPD coverage from doctor visits to all your medical needs
🏡 Home office setup allowance to build your ideal workspace
🌐 Internet allowance to keep you connected
💪 Gym & wellness allowance to stay fit and balanced
🎉 Work hard, play hard – regular team events & engagement activities
🧠 Diji Assist – Mental health & counseling support when you need it
📚 We invest in you – reimbursement for industry certifications
🗣️ Open-door culture – your ideas and feedback always matter
🌍 Flexible work – home or office, wherever you do your best work
🏆 Rewards & recognition that actually recognize you
🥳 Great christmas & financial year-end parties to unwind with your loved ones