Linux Systems Administrator

### Senior Linux Systems Administrator m/f - PortoSysmatch is a Portuguese company that has been on the IT market for almost 20 years.

Our core business is IT Outsourcing and Software Development for the finance sector.

We invest a lot of effort on our client relationships and always deliver the best candidate or product available for their need and that is the main reason behind our success!

At the moment we are looking for the following candidate:Senior Linux Systems Administrator m/f - Hybrid (Porto)- Manage and support RHEL-based server infrastructure across globally distributed trading environments- Provide first-line troubleshooting and incident resolution for server-side issues in a live 24-hour trading platform- Perform OS-level administration including user management, access controls, performance monitoring, and system tuning- Execute OS updates, patching, and upgrades in coordination with the broader Porto infrastructure team- Automate repetitive operational tasks to improve consistency and reduce manual intervention- Monitor system health proactively, identifying and resolving issues before they impact trading operations- Collaborate with development, network, and ops teams to support the full technology stack- Contribute to the build-out of local Ansible automation capabilities within the infrastructure team- Support disaster recovery, backup operations, and business continuity processes- Participate in informal on-call rotation to cover critical incidents outside standard business hours when requiredExperienced Required- Proven track record as a hands-on Linux systems administrator in production environments, ideally mission-critical or financial sector- Deep hands-on experience with Red Hat Enterprise Linux (RHEL 7 and 8 specifically)- Strong OS-level troubleshooting skills: disk space, process management, connectivity, performance diagnostics- Experience with shell scripting (Bash) for operational automation- Familiarity with Ansible for infrastructure provisioning and configuration management- Background in server hardware management, OS migrations, and distributed infrastructure- Comfortable operating with a high degree of autonomy in a small, lean team- Experience with monitoring tools (Zabbix, Prometheus, Grafana, or equivalent)- Exposure to virtualization technologies (VMware or equivalent)Mandatory- Linux system administration (RHEL/SLES)- Ansible (infrastructure automation)- OS performance tuning for low-latency environments- Production-grade mission-critical infrastructure supportStrong Pluses- Puppet (configuration management)- Python scripting- Unix/Shell scripting- Virtualization and container technologies- Server hardware/data center operations experienceWhat we offer:- Salary classification according to the experience shown;

• Good working environment with young and dynamic teams;
• Integration intoexciting and technologically innovative projects;
• Training plan and opportunitiesAnnual Gross Salary: ******€ - ******€ + Other BenefitsTo respond to this opportunity, please send us your CV, indicating the reference RS/SLA/L to the following email address ******#J-*****-Ljbffr