Senior Systems Administrator (Virtualisation)

HEAnet Systems · Dublin 1, Leinster
Department HEAnet Systems
Employment Type Full-Time
Minimum Experience Experienced

HEAnet Systems Team – Senior System Administrator (Virtualisation)


HEAnet is Ireland’s National Research and Education Network, providing internet connectivity and ICT shared services across all levels of the Irish education system, reaching 1,000,000 end users. We connect learners and researchers across all of Ireland to education resources and to fellow national educational and research networks in Europe, and the rest of the world. We are looking for a Senior System Administrator (Virtualisation) who is proficient in virtualisation with an understanding of networks to join our Linux Administrators on the Systems Team.


What the Systems Team does:

The Systems Team drives the deployment and maintenance of HEAnet’s systems and services. The Teams responsibilities fall into 3 streams:


Core infrastructure: This is a combination of virtual infrastructure, physical servers, and appliances, spread across our datacentres, and now an increasing foothold in containerisation and the Cloud. Essential for smooth operation is the automation and management of these resources.


Internal Services: All the pieces that go on behind the scenes to be able to deliver services, such as monitoring, logging, load balancers, database clusters, storage, authentication, as well as providing tools and services to other internal technical teams.


External Services: All the above help us to provide a diverse range of shared services to IT departments, educators, learners and researchers. Some of our more widely used services include Identity and Access Management (Edugate), Wi-Fi roaming (eduroam), large file transfers, and video related services including video conferencing and live & on-demand streaming.


How we do it

Our company values underpin how we do things in HEAnet. We believe in and live by our values and understand they are integral to making HEAnet a great place to work.


image                       image                    image                  image                image                 image

Positive                 Future                Empowered         Enjoy It            Equality &          We Share

Impact                  Focused               Decision                                       Fairness 

                                                           Making                                   


For further information about who we are and our core values, see www.heanet.ie/who-we-are



What you get from us


We value knowledge sharing and communication. We start each week with a team meeting to cover outstanding issues and planned work for the week, combined with team stand-ups each morning to make sure no one is hitting any roadblocks. You will also have a 1:1 meeting every one to two weeks with your manager.


We have regular presentations from anyone in the company on a wide range of topics from technical demos to project management to mental health. On different days of the week any team member may be working from home, so we use tools like Microsoft Teams to keep in touch.


We encourage critical thinking and the exploration of innovative ideas. We often form cross-team special interest groups for specific topic discussions, both ongoing and for fixed projects. By design we encourage that the engineering standards that we set are influenced from the ground up, as the people working within the standards are the ones most informed.


We provide a diverse workload. Everyone on the team has a core responsibility to a service or piece of infrastructure, but we limit individual performance objectives to a max of 30%, so you will get to work in multiple areas with different team members.


We promote a healthy work/life balance. Work outside of standard hours is rare and agreed on in advance. We take the care of our team members' mental health seriously.



Our Technology stack, current and in development:

  • OS: Ubuntu / CentOS / Redhat
  • Virtualisation: VMWare NSX-T
  • Infrastructure: Physical Datacentres/ AWS / Azure
  • Containerisation: Docker Swarm / Investigating Tanzu
  • Network: Optical (DWDM) / MPLS / IP / ISIS / BGP / VXLAN
  • Databases: Percona
  • Orchestration & Automation: Ansible / Foreman / Terraform / GIT
  • Logging & Monitoring: Elastic (OpenSearch) / Icinga2 / Munin / Cacti


Company Benefits

  • Annual performance management system
  • Professional education support
  • Comprehensive group and individual training & development initiatives
  • On-going well-being initiatives
  • Health insurance for employees
  • Defined contribution pension scheme
  • Flexible start/finish times
  • Working from home
  • Employee Assistance Programme (EAP)
  • Taxsaver Ticket scheme
  • Cycle to Work scheme


 What we need from you

  • Experience with building and maintaining VMWare infrastructure (stretched clusters), NSX experience a bonus.
  • Experience with network and Internet protocols and infrastructure (BGP/VxLAN)
  • Experience with building maintaining container infrastructure
  • Significant Linux system administration experience. Covering areas such as high availability, LAMP stacks, application support and scripting.
  • Strong understanding of firewalls and load balancers.
  • Familiarity with automation and configuration management.
  • Participation in the On-Call Rota, with additional compensation (avg. 1 week every 2 months)
  • Ability to work in a team, with a friendly and collaborative approach.
  • Desire to increase and share knowledge


Bonus points

The above skills cover the core of many System Administrators, but some of our services touch on technologies that are more specialised, or require greater experience. We don’t need you to have experience in the following areas, but if you did it could be beneficial.


  • SAML (or other similar authentication standards)
  • RADIUS
  • VMWare NSX
  • VMWare Tanzu
  • Database administration
  • Cloud deployment and administration

More important information

At HEAnet we celebrate diversity and understand how important it is to our ongoing success.  We would like to hear from candidates who are great at what they do and whose values align with ours.


If you need any adjustments made to the application or selection process so you can do your best, please let us know.


HEAnet are delighted to be awarded with the ‘Best in Health and Wellbeing 2021’ through the InBusiness awards from Chambers Ireland and shortlisted as medium company of the year 2021 through the ibec Keep Well Mark. We take pride in developing, maintaining and enhancing our culture of wellbeing and continue to focus on this into 2022 and beyond.

ure of wellbeing and continue to focus on this into 2022 and beyond.

Thank You

Your application was submitted successfully.

  • Location
    Dublin 1, Leinster
  • Department
    HEAnet Systems
  • Employment Type
    Full-Time
  • Minimum Experience
    Experienced