System Field Engineer (Mid-Level

Why are you looking for a job?

If your answer ticks all the boxes, this could be the start of a great collaboration.

• You have a curious mind
  - You won't understand what we're talking about if you don't
• You want to learn more around technology
  - You won't survive if you don't
• You want to make the world a bit better

We happen to be just like that as well. We like hacking things here and there (you included) and create scalable solutions that bring value to the world.

We use state-of-the-art technology to build solutions for our customers and our partners' customers. We make sure we stay best-in-class by participating in
research projects across Europe
, collaborating with
top universities and enterprises
on
AI, Data, and Cloud
.

Square Dev is a member of the
QnR Group
, a leading technology organization specializing in end-to-end custom software solutions, Artificial Intelligence, Cybersecurity, SAP, Service Now and Fin Tech solutions.

As part of QnR Group's ongoing expansion — both in Greece and internationally — we are continuously hiring across a wide range of tech roles. Successful candidates may be hired by QnR Group, or another company within the Group, depending on the role and project.

We are looking for a
Mid-Level System Field Engineer
to support the deployment, operation, and maintenance of enterprise IT infrastructures across customer environments. As part of your professional development, you will receive hands-on training on leading enterprise cybersecurity technologies while working with servers, virtualization, operating systems, and networking solutions. You’ll contribute to real-world infrastructure and cybersecurity projects, helping deliver secure, reliable, and high-performing IT environments for our customers. The successful candidate will be hired by Syste Com
.

• Receive training and hands-on experience on enterprise security platforms and solutions.
• Assist in the deployment, configuration, and ongoing support of security platforms under the guidance of senior engineers.
• Provide first-level support and troubleshooting for security-related infrastructure components as part of integrated IT and cybersecurity projects.
• Support and maintain Windows Server environments, including Active Directory administration, Group Policy (GPO) management, and DNS/DHCP services.
• Assist in the deployment, configuration, and troubleshooting of server infrastructure (physical and virtual).
• Apply system hardening best practices and support patch management and system updates.
• Participate in incident troubleshooting, identifying and resolving system and connectivity issues.
• Provide on-site and remote technical support as part of field engineering operations.
• Perform infrastructure health checks and basic performance monitoring.
• Collaborate with senior engineers to implement infrastructure improvements and operational best practices.
• Support customer deployments, upgrades, and infrastructure migrations.
• Assist in the setup, configuration, and troubleshooting of networking components, ensuring reliable connectivity and correct TCP/IP operation across systems.

• Bachelor’s degree in Computer Science, Information Technology, Networks, or a related field.
• 3 years of experience in system administration, IT support, or infrastructure-focused roles (field experience is a plus).
• Strong understanding of Windows-based environments (Windows Server, Active Directory, DNS, DHCP).
• Good knowledge of networking fundamentals, including TCP/IP, IP addressing, subnetting, VLANs, and basic routing.
• Ability to troubleshoot system and network connectivity issues in production environments.
• Hands-on mindset with strong problem-solving skills.
• Good documentation and communication skills.
• Ability to work collaboratively with technical teams and customer stakeholders, both onsite and remotely.

• Microsoft valid certifications (or willingness to pursue them).