Systems Administrator

About Us 

OLR is an award-winning Oracle Retail Partner with over 20 years of experience delivering and supporting Oracle Retail solutions for international omnichannel retailers and some of the world’s most recognised brands. 

OLR Portugal is the second-largest OLR operation and a key pillar of OLR’s European presence. With its office located in Porto, in the heart of a historic city in Northern Portugal and one of the country’s leading technology hubs, OLR Portugal plays a vital role in delivering Oracle Retail implementations, upgrades, and application support for clients across Europe and beyond. 

The Porto-based team collaborates closely with colleagues in the UK,  India, North America, and Latin America, contributing to Oracle Retail systems integration, solution design, and continuous improvement initiatives that support global retail operations. 

Our Portugal-based professionals are actively involved in large-scale Oracle Retail implementations, cloud initiatives, system upgrades, and omnichannel retail transformation programs, combining strong technical expertise with a strong understanding of European retail markets. 

The Role 

The Systems Administrator supports day-to-day IT operations in the Porto office, remotely across the EMEA region, and on global projects as part of a wider IT team. 

This is a skilled generalist role spanning helpdesk support and laptop setup through to network infrastructure and systems administration. The role requires someone who can work independently while staying closely aligned with the global IT team on workloads, priorities, and projects. 

Location: Fully on-site at the OLR Porto office  

In this role, you’ll: 

General 

Respond to support requests in a timely and appropriate manner using JIRA Service Desk.

Collaborate with global Systems Administrators to balance workloads and pursue further learning.

Establish and maintain local vendor and service provider relationships.

Maintain accurate records for software, hardware, warranties, backups, and repairs. 

Desktop Support 

Configure, maintain, and troubleshoot employee devices (hardware and software).

Support Windows 11 and standard desktop applications including Microsoft Office, Edge, Chrome, and Firefox.

Proactively evaluate and propose improvements to software images, laptop models, and configurations. 

Systems & Network Administration 

Troubleshoot network issues by evaluating hosts files, routes, DNS, and VPN split tunnels.

Perform routine router and switch maintenance including VLANs, ACLs, IP routes, and site-to-site IPSec tunnels.

Design, configure, and maintain Windows Server infrastructure: Active Directory, DNS, DHCP, and DFS.

Configure and maintain Linux servers (primarily AlmaLinux and Oracle Enterprise Linux) for internal infrastructure and developer environments.

Support and improve Office 365 services including Exchange Online, OneDrive, and SharePoint.

Contact vendor support as needed for hardware and software under warranty (Juniper, Lenovo, Proxmox).

Proactively monitor systems and anticipate future needs. 

Documentation 

Develop and maintain clear documentation for infrastructure design, configuration, and support — written for both end users and fellow administrators. 

Experience & Qualifications: 

Bachelor’s degree with 2 - 3 years of experience, or equivalent

Proven experience in technical support and infrastructure management

Industry certifications, especially CCNA

Experience in a global business with a distributed IT team

Fluency in English (spoken and written)

Experience with Juniper SRX gateways and JunOS, including IPSec and OpenVPN

Windows and Linux server administration: DHCP, DNS, LDAP, Active Directory, AD FS, Postfix, web servers

Familiarity with Proxmox VE across a variety of hardware and OS configurations

Experience with Office 365 administration including Exchange Online and SharePoint

Sound knowledge of Windows DFS Namespaces

Ability to work independently while maintaining regular communication with team and leadership

Strong documentation habits and teamwork skills

High ethical standards of discretion and confidentiality 

Preferred Qualifications: 

Experience with provisioning frameworks (Chef preferred; Ansible or Puppet also considered)

Experience with ISO 27001

Development experience 

Why join OLR?  

Make a global impact by contributing to retail transformation projects across regions.  

Collaborate with international teams across UK, Portugal, US, Canada, Mexico, India.  

Grow your career through structured training, professional development, and career progression opportunities.   

Join a certified Great Place to Work with a culture that values collaboration, innovation, and community. 

Benefits you’ll enjoy: 

At OLR, we believe in supporting our people both professionally and personally. Our comprehensive benefits package includes: 

Health insurance and private life insurance 

Monthly flexible benefits allowance 

Vacation 

Employer benefits program  

OLR Welcome Kit  

Regular, fun-filled social events  

Office located in the heart of Porto 

Hybrid work model 

Learning & development without limits  

Employee referral programme