IT Officer – Lisbon, Portugal EU – €20-21k pa gross

  • Full Time
  • Permanent
  • Lisbon

Company name on request

Investment Company

IT Officer (IT Support & VoIP)

Language Requirement: English (mandatory)

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Role Overview

We are looking for an IT Officer to provide L1/L2 technical support with a focus on VoIP systems and day-to-day IT operations. The role also offers exposure to systems and network administration, making it ideal for someone looking to grow their infrastructure skills in a hands-on environment.

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Key Responsibilities

IT Support & End-User Services (Primary Focus)

• Act as the first point of contact for IT and VoIP-related issues (L1/L2 support)

• Set up, configure, and support laptops, desktops, mobile devices, IP phones, and softphones

• Provide support for Windows environments and Microsoft 365

• Deliver remote and onsite technical assistance to end-users

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VoIP Support & Administration (Core Area)

• Support and maintain VoIP systems (e.g., 3CX, FreePBX, Cisco)

• Assist with user provisioning, call routing, IVRs, SIP trunking, and voicemail

• Monitor call quality and troubleshoot issues such as latency, jitter, and packet loss

• Coordinate with vendors and telecom providers when needed

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Exposure to Infrastructure (Systems & Network)

The following responsibilities are part of the role as learning and support opportunities, not full ownership areas:

Systems Administration (Junior Exposure)

• Assist with installing, configuring, and maintaining servers (physical or virtual), operating systems (Windows/Linux), and applications

• Perform routine system updates, patches, and upgrades

• Monitor system performance, logs, and resource usage; support troubleshooting of infrastructure issues

• Help manage user accounts, permissions, and directory services (e.g., Active Directory)

• Support backup setup and maintenance

• Assist with hardware procurement, inventory tracking, and server room setup

• Document configurations, procedures, and infrastructure changes

• Support basic network-related tasks (e.g., DHCP, simple switch configurations)

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Network Administration (Junior Exposure)

• Assist in installing and maintaining network hardware (routers, switches, firewalls, access points)

• Monitor network performance and support troubleshooting of connectivity issues

• Perform routine network maintenance and updates

• Support cabling, patch panel work, and physical network setup

• Assist with VPN configuration and wireless network optimization

• Maintain network documentation and diagrams

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IT Operations

• Support asset management and inventory tracking

• Assist with backups and basic security practices (access control, updates)

• Follow IT policies and procedures

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Requirements

• Diploma or degree in IT, Computer Science, Networking, or related field

• Experience in IT support (L1/L2)

• Exposure to VoIP systems or strong interest in learning VoIP

• Basic understanding of networking and systems concepts

• Familiarity with Microsoft 365 and Windows environments

• Strong problem-solving and communication skills

• Fluent in English (mandatory)

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Nice to Have

• Experience with VoIP platforms (e.g., 3CX, FreePBX, Cisco)

• Exposure to Windows Server or Linux

• Basic networking knowledge (VLANs, VPNs, firewalls)

• Interest in growing into systems or network administration

To apply for this job email your details to cv@dmsitjobs.co.uk.