# System Administrator

**Company**: Howden
**Location**: Athens
**Experience**: entry
**Job type**: full-time
**Category**: IT
**Industry**: Insurance

**Apply**: https://hyperiongrp.wd3.myworkdayjobs.com/en-US/hyperion_external/job/Athens---Kifissias-Ave/IT-System-Administrator_R0019255-1?utm_source=yubhub.co&utm_medium=jobs_feed&utm_campaign=apply
**Canonical**: https://yubhub.co/jobs/job_04a900d8-4dd

## Description

We are looking for an experienced System Administrator to join our team in Athens. The successful candidate will be responsible for maintaining and supporting our LAN/WAN environment, VoIP/telephony systems, and core network hardware.

**Key Responsibilities:**

**Networking**

- Install, configure, and maintain switches, routers, firewalls, and wireless access points.

- Monitor network performance and availability; troubleshoot connectivity issues across LAN, WAN, and VPN links.

- Support VLAN configuration, routing, and basic firewall rule management.

- Maintain network documentation, including diagrams, IP address allocation, and change records.

- Assist with network security tasks such as access control lists, patching of system, network devices, and monitoring for anomalies.

**Telephony**

- Administer and support VoIP telephony systems.

- Manage handset provisioning, extensions, call routing, voicemail, and hunt groups.

- Troubleshoot call quality issues, dropped calls, and integration issues between telephony and network infrastructure.

- Coordinate with telecom carriers and vendors for line provisioning, porting, and outage resolution.

**General System Administration**

- Assist with day-to-day administration of Windows/Linux servers, Active Directory, and core infrastructure services.

- Support backup, patching, and monitoring routines across servers and network devices.

- Provide technical support for network- and telephony-related helpdesk tickets.

- Participate in infrastructure projects such as office moves, network upgrades, and telephony system migrations.

- Maintain accurate asset inventory for network and telephony equipment.

**Helpdesk & End-User Support**

- Provide technical support for hardware, software, network, and account issues.

- Own and resolve tickets end-to-end via the IT service management platform, meeting SLA targets.

**What We're Looking For:**

- 1–3 years of experience in a system administration, network support, or telecom support role.

- Solid understanding of networking fundamentals: TCP/IP, VLANs, routing, switching, DNS, DHCP, VPN.

- Exposure to VoIP/telephony systems and concepts.

- Basic experience with firewalls and network security concepts.

- Familiarity with Windows Server and/or Linux server administration.

- Comfortable using network monitoring and diagnostic tools.

- Strong troubleshooting skills and attention to detail.

- Good communication skills for coordinating with vendors, carriers, and end users.

**What We Offer**

- Competitive salary and performance-based incentives

- Ongoing training & career development

- Private medical insurance

- Flexible working model with international exposure

- Access to leading tools, market platforms, and global expertise

- Opportunity to work on high-value, multinational accounts

- Supportive, entrepreneurial culture focused on growth, development, and collaboration

## Skills

### Required
- TCP/IP
- VLANs
- routing
- switching
- DNS
- DHCP
- VPN
- VoIP/telephony systems
- Windows Server
- Linux server administration
- network monitoring and diagnostic tools

### Nice to have
- hands-on experience with a specific VoIP platform
- exposure to cloud/hybrid networking concepts
- experience with structured cabling and basic hardware installation

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Source: [Apply at hyperiongrp.wd3.myworkdayjobs.com](https://hyperiongrp.wd3.myworkdayjobs.com/en-US/hyperion_external/job/Athens---Kifissias-Ave/IT-System-Administrator_R0019255-1?utm_source=yubhub.co&utm_medium=jobs_feed&utm_campaign=apply)