System Administrator (Windows/Linux)

DRAXIS is an SME that focuses on developing real life environmental scientific solutions. Looking always ahead, we keep up with and interpret what is happening in day-to-day business, so as to offer custom-made tools, reflecting our commitment to be of service to the environment we live in. We focus on building state-of-the-art IT solutions aiming at environmental management and also on providing specialized environmental consulting services in the fields of air quality, waste management, circular economy and climate change.

We are looking for a System Administrator to join our team in Thessaloniki and support the reliability, security, and continuous improvement of our IT infrastructure.

About the Role

As a System Administrator, you will manage and maintain our IT infrastructure, ensure secure and reliable IT operations, and provide technical support across the organization.

Working closely with technical and development teams, you will contribute to infrastructure improvements, automation, cybersecurity, and the adoption of new technologies.

This is a hands-on role for someone who enjoys problem-solving, taking ownership, and continuously improving systems and processes.

What You Will Be Doing

IT Infrastructure & Systems Administration

• Manage and maintain Windows/Linux servers, virtual machines, and cloud-based services.
• Administer essential services, including networking, DNS, SSH, web servers (NGINX/Apache), databases (MySQL/PostgreSQL), GitLab, Microsoft 365, Google Workspace.
• Monitor system performance, troubleshoot issues, and support infrastructure availability and reliability.
• Assist with virtualization, networking, and infrastructure improvements.

IT Security & Business Continuity

• Apply security best practices, including patching, access controls, endpoint protection, and system hardening.
• Manage user permissions and authentication, backups, recovery procedures, and periodic restore testing.
• Identify vulnerabilities, support incident response, and maintain security policies, documentation, and data protection practices.

Automation, Development & Innovation

• Automate repetitive IT tasks through scripting and standardized processes.
• Support containerized environments, CI/CD infrastructure, and monitoring tools.
• Collaborate with development teams to improve infrastructure and operational efficiency.
• Participate in AI/LLM - related implementations, including internal assistants, document search, RAG solutions, using self-hosted LLMs.

Internal IT Support & Operations

• Provide day-to-day IT support, troubleshooting hardware, software, connectivity, and access issues.
• Manage IT-related onboarding/offboarding, equipment, user accounts, assets, licenses, and documentation.
• Support collaboration tools, hybrid/remote working environments, and coordination with external IT providers.

• 2+ years of experience in System Administration, IT support, IT infrastructure, or a similar role.
• Degree in Computer Science, IT, Engineering, or a related field, or equivalent practical experience.
• Hands-on experience with Windows or Linux Server administration, with a willingness to work on both.
• Basic knowledge of networking, IT security, access management, backups, monitoring, and troubleshooting.
• Familiarity with scripting or automation (e.g. Bash, PowerShell, or Python).
• Good communication skills, a service-oriented mindset and a proactive approach to problem solving.
• Willingness to learn new technologies.
• Fulfilled military obligations.

Nice to have

• Experience with Docker or other containerization technologies.
• Familiarity with CI/CD environments, and monitoring tools such as Zabbix, Prometheus, or Grafana.
• Relevant certifications in Microsoft, Linux, cloud, networking, or cybersecurity.

By joining DRAXIS, you will be able to engage with fellow professionals in your field across diverse markets, fostering valuable connections. This network will provide opportunities to exchange best practices, collaborate on overcoming challenges, and gain invaluable experience and mentoring to propel your career forward. At DRAXIS, we are committed to helping you shape the career you desire, empowering you to chart your own path towards success. 

At DRAXIS, we celebrate your contributions, provide you with opportunities and choices, and support your total well-being. Our offerings include health benefits, as well as professional development and tuition assistance. At the core of our culture is a strong emphasis on prioritizing people. We value the advantages of both flexibility and collaboration, whether they occur in a physical workplace or in a remote setting.