Linux System Administrator

Hexa Consulting; Porto; Hybrid; EUR 40,000 - 60,000; Full time

Benefits offered by this job

Private health insurance

Psychological support

Training & certification opportunities

Information security development

Flexible work arrangements

Childcare vouchers

Team initiatives

Collaborative culture

Job summary

Hexa Consulting is seeking an experienced Linux Systems Administrator to join an infrastructure team supporting the financial services sector. You will ensure reliability, security and optimization of Linux environments, including virtualization, storage, and automation, in a hybrid work setting.

The role emphasizes operational resilience, compliance and collaboration with cross-functional teams to implement technical requirements and maintain high system availability.

Qualifications

• 5+ years of professional experience in Linux systems administration.
• Ability to manage infrastructure operations independently and resolve technical challenges.
• Strong analytical, troubleshooting and problem-solving capabilities.
• Effective organization, prioritization and time management skills.
• Clear communication in English, both written and spoken.
• Collaborative mindset and ability to work with multidisciplinary technical teams.
• Adaptability and willingness to learn and apply new concepts.

Responsibilities

• Administer, configure, maintain and upgrade Linux servers across standalone and clustered environments.
• Monitor and optimize system availability, performance, stability and security.
• Implement and troubleshoot infrastructure automation processes for consistent administration.
• Manage and resolve issues involving enterprise storage systems, SAN switches and VMware environments.
• Ensure changes including provisioning, modifications and decommissioning are managed through automation processes.
• Apply security policies and compliance across Linux environments.
• Collaborate with infrastructure, networking and security teams to implement requirements and connectivity.
• Investigate incidents, identify root causes and implement corrective actions.

Skills

Linux server administration

High-availability clustering

Infrastructure automation

VMware virtualization

Enterprise storage

SAN administration

Network fundamentals

Performance monitoring

System security

Change management

Tools

VMware vSphere

SAN switches

Job description

We are looking for an experienced Linux Systems Administrator to join an infrastructure team supporting the financial services sector. You will contribute to the reliability, security and optimization of critical IT environments, working with Linux systems, virtualization, enterprise storage and infrastructure automation.

Hybrid 3 times per week in the office.

This opportunity offers the chance to work in a technically demanding environment where operational resilience, infrastructure availability and compliance are essential.

WHAT YOU WILL DO

• - Administer, configure, maintain and upgrade Linux servers across standalone and clustered environments.
• - Monitor and optimize system availability, performance, stability and security.
• - Implement and troubleshoot infrastructure automation processes to ensure consistent system administration.
• - Manage and resolve technical issues involving enterprise storage systems, SAN switches and VMware environments.
• - Ensure infrastructure changes, including system provisioning, modifications and decommissioning, are managed through established automation processes.
• - Apply security policies, compliance requirements and operational standards across Linux environments.
• - Collaborate with infrastructure, networking and security teams to implement technical requirements and connectivity configurations.
• - Investigate infrastructure incidents, identify root causes and implement sustainable corrective actions.

WHAT WE ARE LOOKING FOR

• - At least 5 years of professional experience in Linux systems administration.
• - Ability to manage infrastructure operations independently and resolve technical challenges.
• - Strong analytical, troubleshooting and problem-solving capabilities.
• - Effective organization, prioritization and time management skills.
• - Clear communication skills and professional working proficiency in English, both written and spoken.
• - Collaborative mindset and ability to work effectively with multidisciplinary technical teams.
• - Adaptability and willingness to learn and apply new technical concepts.

TECHNICAL SKILLS

• - Linux server administration, configuration, maintenance and troubleshooting.
• - Linux high-availability clustering and clustered infrastructure environments.
• - Infrastructure automation and automated configuration management practices.
• - VMware virtualization platform administration and troubleshooting.
• - Enterprise storage systems and storage infrastructure management.
• - Storage Area Networks (SAN) and SAN switch administration.
• - Network infrastructure fundamentals, connectivity flows and network topologies.
• - Infrastructure performance monitoring, availability management and capacity optimization.
• - System security configuration, access management and compliance enforcement.
• - Infrastructure change management and operational standardization.

WHAT WE OFFER

• - Private health insurance from your first day, with no waiting periods and optional family extension.
• - Free and confidential psychological support through TEAM 24, including professional assistance, educational content and live sessions.
• - Continuous professional development through training and certification opportunities.
• - Opportunities to strengthen your expertise in information security, quality management and cybersecurity best practices.
• - Flexibility whenever compatible with the role and operational context.
• - Childcare vouchers and practical measures supporting work-life balance.
• - Team initiatives, shared achievements and accessible leadership.
• - A collaborative professional environment built on trust, mutual support and continuous improvement.

EQUAL OPPORTUNITY

At Hexa, we promote equal opportunities and an inclusive working environment where different backgrounds, experiences and perspectives are valued. In alignment with the principles of the Portuguese Diversity Charter, we support fair recruitment practices and professional development based on competencies, potential and individual contribution.

HEXA LIFE

At Hexa, we are all Builders. Every professional contributes to creating reliable solutions, meaningful relationships and lasting value.

Our culture is grounded in three principles: Honesty, Mutual Support and Agility. We believe in transparent communication, shared responsibility and the ability to adapt and improve together.

As a Hexa Builder, you become part of a community where knowledge is shared, individual contributions matter and professional growth is a collective commitment.