System Administrator

Relax Tech Sweden AB; Malmö kommun; On-site; SEK 502,200 - 725,400; Full time

Job summary

Relax Tech Sweden AB is seeking a System Administrator to join their infrastructure team in Malmö. This role involves maintaining Linux-based infrastructure, automating tasks using Ansible, and managing databases like MariaDB and PostgreSQL. The ideal candidate should have a minimum of 3 years of experience and be familiar with networking fundamentals and container technologies. Additionally, English fluency is crucial for success. The position offers a vibrant work environment with opportunities for professional development.

Qualifications

• Minimum 3 years of experience in system administration.
• Proficient with Linux-based systems, especially Debian.
• Ability to automate tasks using Ansible.

Responsibilities

• Administer and maintain Linux-based infrastructure.
• Automate infrastructure provisioning and configuration.
• Manage and optimize relational databases.

Skills

Linux system administration

Configuration management

Infrastructure as Code

Virtualization platforms

Cloud platforms

Relational databases

Networking fundamentals

Container technologies

Troubleshooting infrastructure issues

Fluency in English

Tools

Docker

Ansible

Terraform

Zabbix

Prometheus

Grafana

InfluxDB

Elastic Stack

Kubernetes

Job description

Job Overview

We are looking for a System Administrator to join our infrastructure team and help build, maintain, and improve a reliable, scalable, and secure platform.

This is a practical, engineering-focused role with direct involvement in day-to-day infrastructure operations. You will work closely with production systems, improve automation, and ensure stability and security across the environment.

We place strong emphasis on building consistent, standardized, and maintainable infrastructure, avoiding ad-hoc solutions and ensuring systems are reliable and scalable.

This role is available in these locations: Tallinn, Malmö, Malta or Helsinki.

Key Responsibilities

• Administer and maintain Linux-based infrastructure (Debian)
• Automate infrastructure provisioning and configuration using Ansible
• Manage and optimize databases (MariaDB, MongoDB, PostgreSQL)
• Perform regular security patching and vulnerability remediation
• Participate in server sizing, capacity planning, performance tuning, and security monitoring
• Troubleshoot system, network, and application issues
• Work with containerized workloads using Docker
• Collaborate with other teams to improve infrastructure reliability, security and deployment processes

Skills Required

• Strong experience with Linux system administration (preferably Debian-based systems)
• Practical experience with configuration management (Ansible)
• Experience or familiarity with Infrastructure as Code (e.g. Terraform)
• Experience with virtualization platforms, preferably Proxmox
• Familiarity with cloud platforms (e.g. OpenStack, Amazon Web Services)
• Experience managing relational databases (MariaDB, PostgreSQL, MongoDB)
• Good understanding of networking fundamentals (TCP/IP, routing, firewalls, DNS)
• Hands‑on experience with container technologies (Docker)
• Ability to troubleshoot complex infrastructure issues independently
• Fluency in spoken and written English is critical for success in this role

Years of Experience

Minimum 3 years of experience

Nice to Have

• Experience with monitoring and observability tools such as
  • Zabbix, Prometheus, Grafana, InfluxDB, Elastic Stack
• Experience with container orchestration using Kubernetes
• Familiarity with CI/CD practices and tools (e.g. Jenkins, Bitbucket Pipelines)
• Scripting or programming skills (Bash, Python, or Go)
• Experience with ZFS (e.g. storage management, snapshots, replication)

We Will Be Extra Excited If You Have Any Of the Following

• Certified Kubernetes Security Specialist (CKS)
• AWS Certified Solutions Architect – associate