Systems Infrastructure Engineer

entanet; Telford; On-site; GBP 52,000 - 57,000; Full time

Benefits offered by this job

Generous holiday allowance

Flexible working arrangements

Supportive, inclusive culture

Job summary

Entanet is seeking a Systems Infrastructure Engineer to manage on-premise and hybrid cloud infrastructure in Telford. You will own Linux administration, virtualization (OpenStack/Proxmox), and automation, with migration work to AWS and other clouds.

You will collaborate across networks for RADIUS, DNS, NMS and logging, maintain patching cadence, and participate in an on-call rota. A hands-on, secure-by-design approach is essential.

Qualifications

• Strong Linux/OS administration in production environments.
• Experience with virtualization platforms including OpenStack/Proxmox.
• Understanding of on-prem to cloud migration processes.
• Familiarity with FreeRADIUS/TACACS+, DNS and centralized logging.
• Secure-by-design mindset aligned with Telecoms/NCSC/NIST guidance.
• Scripting in Bash/Python and automation with Ansible/Terraform.
• Methodical patching, change management and compliance discipline.
• Collaborative work across infrastructure and network teams.
• Comfort using AI-assisted tooling to accelerate deployment and patching.

Responsibilities

• Manage on-premise server and storage infra across data centres, including OpenStack/Proxmox and backup systems.
• Administer cloud environments (AWS) with infrastructure-as-code provisioning.
• Support migration and replacement of core services (DNS, NMS, logging) from CityFibre systems.
• Own Linux/OS administration, patching, virtualization and automated provisioning.
• Collaborate with Networks on network-related systems and integrations.
• Assist Cloud/AWS Engineer on data extraction from on-prem systems during migrations.
• Rebuild services that fall out of scope where required.
• Maintain configuration compliance and a reliable patching cadence with automation tooling (Ansible/Puppet).
• Utilise AI-assisted tooling to automate patching workflows and migration data validation.
• Handle on-call rota including out-of-hours remote troubleshooting and maintenance.

Skills

Linux administration

Scripting (Bash/Python)

Automation tooling

Collaborative teamwork

On-call support

Security/compliance

Education

Degree in a relevant field

Certifications (Linux/AWS/virtualisation) desirable

Tools

OpenStack

Proxmox

Terraform

CloudFormation

Ansible

Puppet

Backup tooling (Veeam/Bacula/Restic)

NetBox

rsyslog/Graylog

BIND/PowerDNS

Job description

We are looking for a Systems Infrastructure Engineer

Location: Telford

Salary: £52,000-57,000

Hours: 37.5 hours per week, 9am-5.30pm Monday to Friday

Work pattern: Office Based, Telford

About The Role

The Systems Infrastructure Engineer manages Entanet’s on-premise and hybrid cloud infrastructure through and beyond separation from CityFibre. The role owns hardware, OS-level administration of the Linux estate and virtualisation platforms, supports lifecycle management of the estate, including migration to AWS or other cloud environment. This is a hands‑on role, and they will work closely with the team of Networks Architects and Engineers on shared systems such as RADIUS, DNS, NMS, and logging.

Key Responsibilities

• Manage on-premise server and storage infrastructure hosted across two data centres in London and Wolverhampton, including OpenStack and Proxmox virtualisation environments, together with associated storage and backup/recovery systems (e.g. Veeam, Bacula or Restic).
• Manage cloud (AWS) environments, including provisioning via infrastructure-as-code (e.g. Terraform or CloudFormation).
• Support configuration and migration from CityFibre systems, including replacement systems such as a Network Monitoring System (e.g. Zabbix, LibreNMS or Observium), NetBox (IPAM/DCIM), centralised logging (e.g. rsyslog, Graylog or the ELK stack), DNS (e.g. BIND or PowerDNS) and an ITSM platform (e.g. ServiceNow or Jira Service Management).
• Own Linux/OS administration (e.g. RHEL/Rocky Linux, Ubuntu/Debian), patching, virtualisation and automated server provisioning.
• Collaborate with Networks on network-related systems and integration (NMS, DNS, FreeRADIUS, TACACS+/AAA, logging).
• Support the Cloud/AWS Engineer on migrations requiring data extraction from on-prem systems.
• Support the rebuild of services that fall out of scope (e.g. DNS) where required.
• Maintain configuration compliance and a reliable patching cadence across the estate using configuration‑management and automation tooling (e.g. Ansible or Puppet).
• Use approved AI‑assisted tooling (Copilot, Claude, etc) to automate patching workflows, configuration compliance checks and migration data validation, reducing manual effort and the risk of human error.
• This role will require suitable on‑call rota, including out of hours for remote troubleshooting and maintenance activities.

About You

• Strong Linux/OS administration experience (e.g. RHEL/Rocky Linux, Ubuntu/Debian) in a production environment.
• Experience with virtualisation platforms (OpenStack, Proxmox or equivalent).
• Understanding of on‑premise to cloud migration, including data extraction.
• Familiarity with network‑adjacent systems such as FreeRADIUS/TACACS+ (AAA), DNS (BIND/PowerDNS) and centralised logging (rsyslog/Graylog).
• Build and configure systems “secure by design”, with particular focus on compliances with the Telecoms Security Act, NCSC guidelines and NIST frameworks.
• Strong scripting (e.g. Bash, Python) and automation ability (e.g. Ansible, Terraform).
• Methodical approach to patching, compliance and change.
• Collaborative – able to work across infrastructure and network boundaries.
• Comfortable using AI‑assisted tooling to accelerate deployment, reduce manual and error‑prone tasks.

It would be great if you have any of the following, but it's not essential:

• Hands‑on AWS experience to support migration workstreams.
• Experience standing up or rebuilding DNS and core services.
• Exposure to ISP core systems, such as TACACS+, DHCP, DNS, NTP, RADIUS, NMS, SYSLOG, Netbox.
• Previous involvement in a TSA or carve‑out network/system/server migration.
• Experience working within ITIL framework.

Qualifications

• Degree in a relevant field or equivalent experience.
• Relevant certification (e.g. Linux, AWS, or virtualisation) desirable.
• Right to work in the UK.

What We Offer

• Competitive base salary.
• Generous holiday allowance and flexible working arrangements.
• Supportive, inclusive culture with and cross‑functional collaboration.

We are committed to equality of opportunity and welcome applications from candidates of all backgrounds.

If you require any reasonable adjustments during the recruitment process, please let us know.