IT Infrastructure Administrator

Omilia - Conversational Intelligence

IT Infrastructure Administrator managing the design and operation of Omilia's IT infrastructure. Ensuring reliability and security of network, server, and cloud systems in hybrid environments.

Posted 5/25/2026full-timeAthens • 🇬🇷 GreeceMid-LevelSeniorWebsite

Tech Stack

Tools & technologies

AnsibleAWSAzureCloudDNSDockerFirewallsGoogle Cloud PlatformGrafanaKubernetesLinuxSwitchingTerraformVMware

About the role

Key responsibilities & impact

- Owns the availability, performance, and security posture of Omilia's IT infrastructure across network, server, and cloud layers.
- Accountable for infrastructure lifecycle management: capacity planning, procurement, deployment, maintenance, and decommissioning.
- Responsible for backup integrity, disaster recovery readiness, and business continuity across all managed systems.
- Ensures infrastructure compliance with Omilia's security policies and relevant certifications (ISO 27001, SOC 2, PCI-DSS).
- Contributes to infrastructure strategy and roadmap, identifying opportunities to improve resilience, efficiency, and cost.
- Administer and maintain network infrastructure: LAN/WAN, firewalls, VPN, DNS, DHCP, and switching/routing equipment.
- Manage server infrastructure (physical and virtual) including provisioning, patching, performance tuning, and decommissioning.
- Administer cloud infrastructure across GCP, AWS, or Azure: compute, storage, networking, and IAM configurations.
- Manage virtualisation platforms (VMware, Hyper-V) and containerisation environments where applicable.
- Implement and maintain backup and disaster recovery solutions; conduct periodic DR tests and document outcomes.
- Monitor infrastructure health using observability tools (e.g. Zabbix, Datadog, Grafana); respond to and resolve infrastructure incidents.
- Enforce infrastructure security controls: patch management, vulnerability remediation, access hardening, and certificate management.
- Manage on-premises and cloud storage solutions, ensuring data integrity, retention compliance, and performance.
- Maintain infrastructure documentation: network diagrams, runbooks, configuration baselines, and change records.
- Support IT security audits and contribute infrastructure evidence to compliance programmes (ISO 27001, SOC 2, PCI-DSS).

Requirements

What you’ll need

**Knowledge, Skills & Experience**
**Required:**
- 3–5 years of IT infrastructure administration or systems engineering experience.
- Hands-on experience with network administration: firewalls (e.g. Fortinet, Palo Alto, Cisco), VPN, DNS/DHCP, VLANs.
- Solid experience with server administration on Linux and/or Windows Server environments.
- Experience with at least one major cloud platform (GCP, AWS, or Azure) at an administration level.
- Experience with virtualisation technologies (VMware vSphere, Hyper-V, or equivalent).
- Familiarity with backup and DR tools and methodologies; experience designing or testing recovery procedures.
- Knowledge of infrastructure security principles: hardening, patch management, access controls, certificate lifecycle.
- Experience with infrastructure monitoring and alerting tools.
- Methodical approach to documentation, change management, and incident response.
- Strong analytical and problem-solving skills; able to diagnose complex infrastructure issues under pressure.
- Bachelor's degree in Information Technology, Computer Science, Network Engineering, or a related field.
**Nice to have:**
- Relevant certifications: CCNA, CompTIA Network+, AWS/GCP/Azure Associate, VMware VCP, or equivalent.
- Experience with infrastructure-as-code tools (Terraform, Ansible, or similar).
- Exposure to containerisation and orchestration (Docker, Kubernetes).
- Experience in a SaaS, cloud-native, or CCaaS technology environment.

Benefits

Comp & perks

- Fixed compensation;
- Long-term employment with the working days vacation;
- Development in professional growth (courses, training, etc);
- Being part of successful cutting-edge technology products that are making a global impact in the service industry;
- Proficient and fun-to-work-with colleagues;
- Apple gear

ATS Keywords

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Applicant Tracking System Keywords

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Hard Skills & Tools

IT infrastructure administrationnetwork administrationserver administrationcloud administrationvirtualisation technologiesbackup and disaster recoveryinfrastructure monitoringdocumentationincident responseproblem-solving

Soft Skills

analytical skillsmethodical approachchange managementdiagnosing complex issuesresilienceefficiency improvementcost managementcommunicationteam collaborationleadership

Certifications

ISO 27001SOC 2PCI-DSSCCNACompTIA Network+AWS AssociateGCP AssociateAzure AssociateVMware VCPTerraform