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Senior Infrastructure Officer
Tototheo Global. Maintain, administer, and support IT infrastructure across office locations, data centres, and cloud environments .
Core Competencies
Role fitCore Competencies
Use this summary to align your resume positioning with the role.
Demonstrates extensive experience in IT infrastructure administration, including management of cloud environments, on-premises systems, and network security. Proficient in Microsoft 365, Windows Server, and virtualization technologies, with a strong focus on compliance and incident management.
Highest-signal resume keywords
IT Infrastructure AdministrationMicrosoft 365 AdministrationCloud Environment ManagementNetwork Security ExpertiseDisaster Recovery Planning
ATS Keywords
Tailor your resumeApplicant Tracking System Keywords
Tip: use these terms in your resume and cover letter to boost ATS matches.
Hard Skills
Windows ServerActive DirectoryMicrosoft 365AWSMicrosoft AzureLinuxPowerShellPythonVMwareTCP/IP
Soft Skills
Problem-SolvingCommunicationTeam CollaborationTechnical SupportIncident Management
Tools & Technologies
Microsoft Entra IDExchange OnlineSharePoint OnlineJira Service ManagementNinjaOneZabbixMicrosoft Intune3CXAsterisk PBXFortinet
Certifications & Qualifications
Microsoft CertificationAWS CertificationLinux CertificationCybersecurity CertificationFortinet Certification
Industry Keywords
ISO 27001ITILInfrastructure MonitoringDisaster RecoveryNetwork Security
Tech Stack
Tools & technologiesAnsibleAWSAzureCloudCyber SecurityDNSFirewallsITSMJamfLinuxPythonSwitchingTCP/IPVMware
About the role
Key responsibilities & impact- Maintain, administer, and support IT infrastructure across office locations, data centres, and cloud environments
- Monitor infrastructure availability, capacity, performance, and security
- Install, upgrade, configure, maintain, and troubleshoot on-premises, hybrid, and cloud-based systems
- Manage servers, virtual machines, storage, operating systems, software deployment, patching, endpoint protection, and IT assets
- Administer Microsoft 365, Microsoft Entra ID, Exchange Online, SharePoint Online, Microsoft Teams, identities, permissions, licensing, MFA, Conditional Access, and SSO
- Administer Windows Server, Active Directory, DNS, DHCP, Group Policy, File Services, Linux servers, applications, and virtualization platforms
- Administer LAN, WAN, VLAN, Wi-Fi, VPN, firewall, switching, and routing infrastructure
- Maintain secure connectivity between offices, cloud environments, remote users, and third-party services
- Support AWS, Microsoft Azure, DigitalOcean, cloud servers, storage, networking, security groups, permissions, backups, logging, monitoring, and migrations
- Administer endpoint and device-management platforms, RMM tools, device configurations, software deployment, security policies, patching, and compliance
- Manage backups, investigate failures, perform restoration testing, and support disaster-recovery and business-continuity planning
- Implement infrastructure security controls and support vulnerability management, incident investigation, remediation, ISO 27001 compliance, and audits
- Own escalated infrastructure incidents and service requests through investigation, resolution, root-cause analysis, and corrective actions
- Lead or provide senior technical support for infrastructure projects, solution design, implementation, testing, documentation, migrations, and office deployments
- Research technologies and develop automation and scripts to improve security, reliability, performance, and efficiency
- Maintain infrastructure records, diagrams, SOPs, knowledge bases, troubleshooting procedures, and technical documentation
- Provide senior-level technical support and guidance to internal users, third parties, clients, IT colleagues, vendors, and technology partners
Requirements
What you’ll need- Bachelor’s degree in Computer Science, Information Technology, Computer Engineering, or a related discipline, or equivalent professional experience
- Minimum of 7 years of relevant professional experience in systems, network, cloud, or infrastructure administration
- Demonstrable experience supporting business-critical IT infrastructure within a professional environment
- Experience supporting infrastructure across multiple locations and cloud environments would be considered an advantage
- Experience taking ownership of complex technical issues and infrastructure projects
- Fluent in English, both spoken and written
- Relevant Microsoft, Fortinet, AWS, Linux, networking, or cybersecurity certifications would be considered an advantage
- Strong knowledge of Windows Server, Active Directory, DNS, DHCP, Group Policy, and File Services
- Strong knowledge of Microsoft 365 and Microsoft Entra ID, including Exchange Online, SharePoint Online, Microsoft Teams, identity management, MFA, Conditional Access, and security controls
- Strong understanding of TCP/IP, DNS, DHCP, VLANs, routing, switching, VPNs, firewalls, and network security
- Experience with enterprise firewall and networking technologies
- Experience with AWS, Microsoft Azure, and DigitalOcean IaaS/PaaS environments
- Good working knowledge of Linux environments, including Ubuntu, Debian, CentOS, or equivalent
- Experience with VMware, KVM, or equivalent virtualization platforms
- Experience with PowerShell, Python, Ansible, or equivalent scripting and automation technologies
- Experience with Microsoft Intune, JAMF, or other MDM solutions
- Experience with NinjaOne or equivalent RMM platforms
- Experience with Zabbix or equivalent infrastructure monitoring and alerting platforms
- Experience with backup, restoration, and disaster-recovery technologies
- Experience with Freshservice, Jira Service Management, or equivalent ITSM/service desk platforms
- Familiarity with 3CX and Asterisk PBX/unified communications platforms
- Good understanding of cybersecurity principles and infrastructure hardening
- Awareness of ISO 27001
- Understanding of ITIL practices and frameworks
- Ability to participate in planned maintenance and infrastructure upgrades outside normal business hours
- Availability to assist with critical infrastructure incidents outside normal working hours
- Ability to travel between company offices or other business locations when required
- Commitment to confidentiality, integrity, availability, and compliance with company policies
Benefits
Comp & perks- Work in an international, dynamic, and fun environment, at a growing company
- Attractive remuneration package
- Private Medical Health Insurance
- Continuing education and training
- 13th salary (for Cyprus)
- Half day leave on your birthday
- Wellness Support – Unlimited access to a dedicated wellness platform for mental health resources, coaching and self-care tools
- Equal opportunity, inclusive, respectful, and supportive workplace
- Certified Great Place to Work environment
- Continuous learning, teamwork, and employee wellbeing focus