Job Description
We are looking for an

IT Infrastructure System Administrator

to support the operation, maintenance, and continuous improvement of hybrid corporate environments, combining on‑premise infrastructure and public cloud services.

The role will focus on the day‑to‑day administration of systems, virtualization, storage, backup, critical infrastructure services, and advanced technical support for production environments.

The candidate will participate in infrastructure automation using

Infrastructure as Code , mainly with

Terraform

for provisioning and state management, and

Ansible

for configuration management, working with modular, reusable code versioned in

Git .

The scope of the role is focused on infrastructure deployment and operations, not application deployment, which falls under the DevOps area.

Experience in

on‑premise Kubernetes

administration at infrastructure level will be valued, including nodes, cluster networking, persistent storage, certificates, etcd, and version upgrades.

In networking, practical knowledge of corporate networks,





VLAN/VXLAN

segmentation, routing and switching, DNS/DHCP, site‑to‑site VPNs, firewall policies, and interconnection between on‑premise networks and cloud environments is required.

Knowledge of

NAC ,

BGP , and network fabrics based on

Extreme Networks Fabric

will be valued.

The candidate will also participate in advanced, code‑based management of infrastructure and networking in public cloud environments, mainly

AWS , including VPCs, peering, transit/VPN gateways, hybrid connectivity, and IAM.

Additional experience with

Google Cloud

or

Azure

will be valued due to the transferability of knowledge across cloud platforms.

Knowledge of database administration at infrastructure and operational level will also be valued, including relational and non‑relational databases such as

SQL / PostgreSQL

and

MongoDB . This is not an essential requirement.

The profile should contribute to maintaining

📌 IT Infrastructure System Administrator (Madrid)
🏢 Applus IDIADA
📍 Madrid