Systems and Security Engineer

Volton Hellenic Energy SA – powering Greece with Electricity, Natural Gas, and Telecommunications through Orizon.

We provide reliable solutions and build trusted relationships with our customers.
Through innovative services, we meet today’s energy demands while preparing for the challenges of tomorrow.

As Greece’s first multi-service provider, we seamlessly combine energy and telecoms, creating a unique ecosystem of value and convenience to our customers.

Recognized for a 3rd consecutive year as a Great Place to Work, we are proud of our people and our culture of excellence.

We are not just keeping up with the future – we are leading the way, setting the standard, and shaping what comes next.

Join Us!

Orizon strengthens its team in Athens and seeks for a Systems and Security Engineer.

This is an engineering role in an up-and-coming network operator and Telecommunications Service Provider, covering technologies such as: Virtualization, Infrastructure planning and deployment, Systems Observability and Security, Programmability and Automation, etc.

The Network and Infrastructure team works in close cooperation with the Mobile Services team and is responsible for all the IP & Transport Network, Infrastructure (physical and virtual) and supporting services of the MSP/ISP. This role is an opportunity for a passionate Systems Engineer that wants to be part of an exciting project, an MSP/ISP in the making.

Responsibilities

• Design and deploy an infrastructure (physical and virtual) that supports telecommunication services and applications
• Specify and document best practices and procedures for engineering and operations
• Define and monitor KPIs for systems performance and planning
• Enhance Site Reliability via proven engineering methods and toolsets
• Design and implement security policies for systems and applications of mobile services
• Manage suppliers and subcontractors providing related products and services

Necessary Skills

• Excellent knowledge and experience in systems (physical, virtual, public cloud) management and in virtualization platforms / operating systems: Windows Server, Hyper-V, VMWare, Linux
• Knowledge and understanding of systems networking requirements and basic networking principles (VLANs, Link Aggregation, routing protocols such as BGP, etc.)
• Knowledge and experience in the specification and implementation of security measures and operating procedures for the systems and their hosted applications

• University Degree or equivalent, in Engineering, Computer Science or similar
• 3-5 years of experience in managing computer systems, servers and virtualization platforms
• Competence with system observability tools (e.g. TICK stack)
• Experience in security technologies such as firewalls/IPS, VPNs, authentication systems etc.
• Experience in scripting/programming (e.g. BASH, Python), automation frameworks (e.g. Ansible), DCIM/IPAM (e.g. Netbox), DevOps and CI/CD frameworks
• Bonus points for deployment/Operational
• Experience with ISP-related services (RADIUS, LDAP, DNS, DHCP, NTP, TR069/TR369 etc.)Experience in managing virtual servers and other computing resources in public cloud environments (Azure & AWS) will also be considered a bonus
• Fluency in English both oral and written
• Related technology certifications will be considered an asset

• Competitive salary package aligned with your experience and expectations
• Hybrid working model offering flexibility and work life balance
• Private health insurance and a range of corporate benefits & perks (half-day work on birthday, early Fridays in Summer and a variety of team-building activities)
• Continuous learning culture with ongoing training and development opportunities
• A dynamic, human-centric and high-performance work environment
• Modern office spaces designed to enhance productivity and comfort

In accordance with the EU Pay Transparency Directive (EU) 2023/970, compensation details for this position will be communicated to candidates by our consulting team at an appropriate stage of the interview process.

Don’t miss the chance to join a Great Place to Work–Certified company that fosters a positive work environment and is proudly recognized as a Best Workplace for Women 2025. Embracing an employee First culture, we put people at the heart of everything we do; an approach honored with a Silver Award for Employee-Centric Culture and a Silver Award for Best Onboarding Initiatives.

All applications will be treated with confidentiality. If your CV meets the requirements of the job, we will contact you by phone to schedule an appointment. Information about the company on our site orizon.gr