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. SquareDev? 🐿️ 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 . About QnR Group SquareDev is a member of the QnR Group , a leading technology organization specializing in end-to-end custom software solutions, Artificial Intelligence, Cybersecurity, SAP, ServiceNow and FinTech 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. Role overview We are looking for a Junior System Field Engineer to support the deployment, operation, and maintenance of enterprise IT infrastructures across customer environments. In this role, you will work hands-on with servers, operating systems, and networking technologies, assisting in the implementation, configuration, and troubleshooting of infrastructure solutions. You will be actively involved in field deployments, onsite technical support, and collaboration with senior engineers to ensure stable, secure, and well-performing systems for our customers. The successful candidate will be hired by SysteCom . The ideal candidate will be responsible for: 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. 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. To excel in this role, you'll need: Bachelor’s degree in Computer Science, Information Technology, Networks, or a related field. 2 years of experience in system administration, IT support, or infrastructure-focused roles (field experience is a plus). Strong understanding of networking fundamentals, including TCP/IP, IP addressing, subnetting, VLANs, and basic routing. Good knowledge of Windows-based environments (Windows Server, Active Directory, DNS, DHCP). 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. Nice to have: Microsoft valid certifications (or willingness to pursue them).