Join a cybersecurity-first MSP that's all about people, not just tech.At A Corp Computers, we're redefining what technical support looks like.
We're looking for a Senior Technical Support Engineer to be the go-to escalation point, mentor others, and drive real business outcomes for our clients, not just close tickets.What you'll be doing:Own and resolve complex support issues across Microsoft 365, Azure, Windows Server, networking, and backup stacksBe the "firewall" for management escalations, dig deep, investigate properly, and resolveCoach and uplift junior staff with hands-on mentoringLead by example with strong documentation and process disciplineEnsure client confidence through calm, clear, jargon-free communicationPlay a key role in incident response, compliance, and applying frameworks like Essential 8 & SMB****What you will bring:3+ years MSP experience in a Level 2/3 support or senior tech roleStrong skills across Microsoft 365, networking, security, and backup platformsA mindset of ownership, accountability, and continuous improvementClear communication and a passion for great client outcomesCybersecurity-first thinking baked into your daily workWhy join A Corp?
A human-first, values-driven culture that actually lives by its principlesClients who trust us to solve real business challenges, not just IT issuesA high-performing team where your voice mattersFlexibility, autonomy, and a growth path that's actually achievable———————————-You will be accountable for:Escalation Handling1.
Act as the first point of escalation for the technical support team.2.
Fully investigate and resolve complex support issues before escalating further.3.
Set an example for others in quality of diagnosis, communication, and resolution.4.




Shield management from unnecessary escalations.Technical Excellence1.
Resolve technical issues across systems including Microsoft 365, Windows Server, networking, backups, security, and cloud platforms.2.
Provide Tier 2/3 support as required, with an emphasis on root cause analysis and long-term solutions.3.
Operate as a key technical resource during cybersecurity incident response.4.
Adhere to documentation and change management policies.Team Support and Leadership1.
Mentor junior technical staff, providing guidance and on-the-job coaching.2.
Participate in internal technical reviews and peer feedback loops.3.
Promote a culture of accountability, learning, and best practice within the support team.4.
Contribute to the growth of a high-performing team culture aligned to A Corp values.Client Experience1.
Deliver exceptional service and maintain strong client relationships.2.
Attend client sites when required to resolve issues, complete onboarding tasks, or lead projects.3.
Communicate technical issues and solutions clearly to clients, both verbally and in writing.4.
Promote confidence and trust through accountability and clarity Process Improvement and Documentation1.
Identify gaps in current processes and assist in developing improvements.2.




Maintain and update knowledge base articles and client documentation within relevant systems.3.
Contribute to internal technical SOPs and onboarding materials.4.
Provide feedback on recurring issues and recommend proactive resolutions.
Security and Compliance1.
Apply Essential 8 and SMB**** controls as part of service delivery.2.
Ensure best-practice security posture across all supported environments.3.
Participate in audits, incident reviews, and security projects.4.
Participate in incident response and resolution when required.Professional Development1.
Proactively maintain certifications and technical knowledge.2.
Stay current on new technologies relevant to A Corp's services and clients.3.
Share insights with the wider team and apply learning in practice.Key Skills and Attributes
Advanced diagnostic and troubleshooting skills across Microsoft 365, Windows Server, Azure, networking, backup tools, security stacks, and desktop support
Understanding of ITIL processes and managed services frameworks
Excellent documentation habits using modern documentation tools.
Calm under pressure, with an ability to work independently and as part of a team
Highly effective communication, both internally and with clients using a no-jargon, client first approach.
Robust internal collaboration skills and the ability to bring others along for the journey and the ability to coach junior staff, fostering a culture of continuous learning
Strong time management and ownership of deliverables
Security-first mindset with working knowledge of E8, MFA, backups, endpoint security, and patch management.
Maintain a clear commitment to cyber resilience, governance, and security-first practices

📌 Senior Technical Support Engineer (Sydney)
🏢 A Corp Computers
📍 Sydney