Senior Systems Administrator

Hexa Consulting is looking for a Systems Administrator to join our Client's team in a hybrid work model from Lisbon. Job Details Lisbon – Alcântara, Portugal | Hybrid, with office presence 2 days per week | Technology Mandatory Requirements 5+ years of professional experience in Systems Administration, infrastructure operations, or similar technical roles. Strong experience administering Linux and Windows Server environments. Solid knowledge of virtualization platforms and infrastructure troubleshooting. Experience with monitoring, system operations, and service continuity. Ability to troubleshoot systems, network, and application issues autonomously. Good technical documentation and communication skills. Professional working proficiency in English. Collaborative, responsible, and solution-oriented working style. Nice to Have Experience with Azure and/or AWS. Knowledge of Ansible, Bash, PowerShell, or Python. Relevant certifications such as RHCE, VCP, MCSE, or equivalent. Technology Stack Linux | Windows Server | VMware | Hyper-V | Proxmox VE | Azure | AWS | Ansible | Bash | PowerShell | Python Key Responsibilities Administer, monitor, and maintain Linux and Windows Server environments across cloud and on-premises infrastructure. Manage virtualized environments using VMware, Hyper-V, and/or Proxmox VE. Monitor infrastructure availability, performance, and service continuity. Analyze and troubleshoot systems, network, and application issues, ensuring timely resolution and clear technical communication. Perform technical testing and produce accurate documentation and operational reporting. Support cloud and on-premises infrastructure operations. Collaborate with technical teams to implement, optimize, and standardize infrastructure solutions. Compensation Transparency Base salary range: EUR 17 000 - EUR 28 000 gross/year Total compensation: up to EUR 33 000/year The salary range is based on objective and gender-neutral criteria, including required competencies, professional experience, level of responsibility and role requirements. Final compensation will be determined according to the candidate's profile and position requirements. What We Offer Work Model: hybrid, with office presence 2 days per week. A culture where each person is encouraged to act as a Builder, contributing with ownership, responsibility and impact. A collaborative environment built on Honesty, Mutual Support and Agility. Continuous learning and certification support throughout your journey. Private health insurance from day one, with optional family extension. Confidential mental health support through TEAM 24, including psychological support, content and live sessions. Childcare vouchers and practical family support measures. Opportunities to grow through exposure to quality management, information security, AI governance and cybersecurity best practices. Equal Opportunity Hexa is committed to equal opportunity, inclusion and fair access to professional growth. We value diverse backgrounds, perspectives and experiences, and we support the principles of the Portuguese Diversity Charter in the way we build teams and opportunities. Hexa Life Life at Hexa means being part of a community of Builders. We work with transparency, support each other across projects and geographies, and stay focused on learning, adapting and delivering work that creates real impact. If you meet the above criteria and are ready for an exciting opportunity in a dynamic environment, please send your CV!