Tier 3 Infrastructure Engineer

Hire Resolve's client is looking for a Tier 3 Infrastructure Engineer to join their team in Midrand, GP. The Tier 3 Infrastructure Engineer provides advanced technical support and expertise in maintaining, troubleshooting, and optimizing complex IT infrastructure systems. This role involves managing high-level escalations, performing root cause analysis, and implementing solutions for network, server, and storage issues. The engineer will design, deploy, and support infrastructure solutions, ensuring system availability, security, and performance. They will collaborate with cross-functional teams to implement upgrades, support cloud and on-premise systems, and contribute to infrastructure projects. Strong knowledge in networking, virtualization, and enterprise-level systems is essential. Responsibilities Infrastructure Administration & Support: Provide L2-L3 administration, troubleshooting, and maintenance for: Fortinet Firewalls, IDS/IPS, VPN, Security Appliances & Cloud Security Routing, Switching, and Wireless Networking VMware vCenter and Hyper-V Hypervisors Server Hardware and Components Storage Infrastructure (SAN and vSAN) Linux / Windows Systems Administration Active Directory / Identity Management Administration Azure, AWS, and Google Cloud Computing Network & Systems Monitoring Security Management: Analyze and triage security events and alarms detected by the SIEM system Respond to security incidents/threats logged on the service desk and remediate/mitigate as necessary Manage/maintain security infrastructure and toolsets (Firewalls, Networking equipment, Vulnerability Management systems, SIEM, etc.) Assist with designing, implementing, and managing endpoint management and security solutions (Anti-malware, Antivirus, Mobile Device Management) Develop/maintain security safeguards around the organizations cloud footprint Projects & Improvement: Assist with IT & Security related projects, rollouts, and infrastructure maintenance, including Backups (VEEAM), Business Continuity, and Disaster Recovery Maintain/improve the security of IT systems through proactive monitoring and event management Automate repetitive tasks Provide technical input into company IT security standards and best practices aligned with industry standards (e.g., ISO27001, SOC 2) Stay updated with industry trends around cybersecurity and provide input for business improvements and innovations Team Collaboration: Train and upskill junior staff Action requests relating to Network, Security & Hyper-V Infrastructure logged on the service desk Assist with other System Administration as needed Requirements Education and Certifications: Microsoft MCSE / Cisco CCNA / VMware Certification Linux / Azure / AWS / Google Cloud Certification EC Council CEH / Security / CISSP Fortinet FCP / FCSS Technical Competencies: 10 years of experience within a Network & Security support environment, working across network and server infrastructure both on-premise and in the Cloud Minimum of 5 years of experience in the following: Network administration and support for firewalls, switches, Wireless (Fortigate & Cisco), and VPN client connections Windows 2012 and newer Server Administration and Active Directory / DNS/DHCP administration Linux administration Backup and recovery System Administrator experience Proven ability to administer and configure Virtual environments Behavioural Competencies: Strong interpersonal skills and ability to quickly form professional relationships with colleagues and clients at all levels of seniority Excellent problem-solving skills Used to working in a business culture that promotes adherence to procedures and controls Display a strong sense of ownership and independent work ethic Process-oriented and structured Customer service orientated with a willingness to engage people and help Flexible to work shifts depending on company requirements Ability to prioritize and coordinate tasks efficiently, ensuring all deadlines are met Contact Hire Resolve for your next career-changing move. Our client is offering a highly competitive salary for this role based on experience. Apply for this role today, contact Gaby Turner at gaby.turner@hireresolve.us or on LinkedIn You can also visit the Hire Resolve website: hireresolve.us or email us your CV: itcareers@hireresolve.za.com

Location: Midrand, Gauteng, ZA

Posted Date: 10/15/2025