Site Reliability Engineer/ Infrastructure Engineer

Critical Manufacturing

Portugal · Full-time · Entry

Critical Manufacturing is dedicated to empowering high-performance operations to make Industry 4.0 a reality with the most innovative, comprehensive, and modular MES software. We have a global presence, but our headquarters, and the main technical center, are in Porto (Maia), Portugal, where we develop a state-of-the-art solution for Semiconductor, Electronics, Medical Devices, and Industrial Equipment.

Recognized as a Leader by Gartner, we are part of ASMPT, the world's largest supplier of best-in-class equipment, and technological process partner for the electronics and semiconductor industries.

The Site Reliability Engineer (SRE) / Infrastructure Engineer will be responsible for the support, maintenance, and continuous improvement of the company's hybrid IT infrastructure. The role covers system and platform administration, service delivery, and operational reliability across both on-premises and cloud-based environments.

What will you do:

Administer and maintain physical and virtual infrastructure, including Windows/Linux servers, storage systems, and virtualization platforms (Proxmox, Hyper-V, oVirt)
Operate, monitor, and support hybrid cloud environments, including containerization clusters (on-premises) and infrastructure in Azure and AWS
Design and deliver capacity services, manage service requests and escalated incidents through the Service Desk
Perform user access management, rights enforcement, and directory services operations using Active Directory and Azure Active Directory
Apply system and security updates, conduct routine patching, and implement configuration changes in alignment with security and compliance requirements (e.g., ISO 27001, GDPR)
Support system performance monitoring, capacity management, backup operations, and disaster recovery readiness
Contribute to automation initiatives using scripting languages (e.g., PowerShell, Bash) and infrastructure-as-code tools when applicable
Maintain accurate and up-to-date documentation of systems, processes, configurations, and operational procedures
Collaborate with internal teams to support deployments, infrastructure projects, and continuous improvement initiatives

Requirements

What you must have:

Bachelor's degree in computer science, Information Technology, or a related field; equivalent practical experience will also be considered
Minimum of 3-5 years of experience in system administration, infrastructure operations, or a comparable role
Proven experience with Windows Server and Linux system administration
Proficiency in directory services and cloud platforms: Active Directory, Azure, and Microsoft 365
Familiarity with virtualization environments, basic networking (DNS, DHCP, VPNs, firewalls) and storage networking
Strong analytical and troubleshooting skills, with the ability to work independently and collaboratively
Excellent English skills - spoken and written

What we consider a plus (not mandatory):

Hands-on experience with OpenShift, container platforms (Docker/Kubernetes), and hybrid cloud management
Knowledge of Infrastructure as Code tools (e.g., Terraform, Ansible)
Exposure to monitoring and observability platforms (e.g., Zabbix, Prometheus, Grafana)
Experience in environments aligned with ITIL, DevOps, or Agile methodologies
ITIL Foundation certification

Diversity, Equity and Inclusion are a source of commitment and innovation

At Critical Manufacturing, we welcome and encourage applications from individuals of all backgrounds, regardless of disabilities, diverse abilities, identities, or experiences. Our commitment is to create an inclusive environment where everyone has equal opportunities to succeed and thrive.

If you need accommodation during the recruitment process, please let us know - we're happy to support you.

Key Skills

Ranked by relevance

cloud active directory virtualization storage infrastructure as code system administration containerization windows server prometheus powershell terraform firewalls devops server linux bash itil dhcp vpns dns

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