**NTT DATA** – a part of NTT Group - is a Top 10 global IT services provider, headquartered in Tokyo, with over 150,000 employees. **We deliver consulting solutions** by combining specialized sectorial knowledge, our transformation management skills, and our large technology expertise (data, RPA, AI, low code, cloud, IoT, virtual reality), to keep our clients, as well as society, a step ahead in this digitally dynamic world. Everything we do is underpinned by our **core values** of 'Teamwork', 'Foresight' and 'Clients First'. Our shared **leadership principles** of Collaboration, Engagement and Curiosity help us build a community where our people are equipped with the best resources to face new challenges. You will be responsible for leading the team that manages, maintains and supports the server infrastructure. The role combines deep technical expertise in server systems with strong leadership and project management capabilities. The individual ensures high availability, security and performance of server environments while aligning with the broader IT strategy. **Your Role:** + Lead, mentor and coordinate the daily activities of the server administration team. + Oversee the design, implementation and management of a scalable and secure server infrastructure. + Oversee Windows/Unix/Linux/VMWare server environments, including patching, updates and lifecycle management. + Assure the monitoring of the server infrastructure performance. + Establish and enforce policies, standards and procedures for server management. + Plan and implement server upgrades and migrations with minimal downtimes. + Ensure security compliance, including vulnerability remediation, access control. + Oversee the relevant documentation regarding configurations, system changes, procedures and server infrastructure design. + Participate and manage specific technical project work with relevance for the server infrastructure. + Oversee the identification, diagnosis of the issues to resolution. + Proactively managing and coordinating service improvement initiatives. + Participate in DR / BCP testing. + Ensure proactive evolution & optimization of service delivery organization, methods and tools. **Why NTT DATA?** We value a **collaborative** and **supportive** environment, celebrating **curiosity** and **engagement** We are committed to supporting the physical, financial and emotional well-being our of employees **Career development.** Training path and access to learning opportunities, yearly performance reviews and a mentorship program **Talent Friends.** Refer a friend and receive a **bonus** when they join **We care about you** **Health & well-being.** Focus on your mental health with access to a platform with certified psychologists & mental health workshops. Take a break with one of our online fitness and well-being sessions **Diversity & inclusion.** We are committed to equal employment opportunities regardless of gender, gender expression and identity, sexual orientation, religion, culture, origin, disability, age, or other personal and social characteristics. **\#WeAreAllUnique** **\#YouMakeUsUnique** Please let us know if you require us to accommodate any accessibility needs during the recruitment process. **Benefits at NTT DATA Greece** Health insurance for the employee and one dependent family member (100% paid by NTT DATA) Meal vouchers of 120€ per month (x12) Corporate mobile phone: subscription & device Teleworking equipment allowance Udemy Account Access to Open Up mental health service 28 days of paid annual leave consisting of your legal holidays and compensation days **Your profile: ** + Bachelor’s or Master’s degree in Computer Science, Informational Technology, or a related field. + 8+ years of experience in system administration or mid to big size infrastructure roles. + Minimum 2-3 years of experience in a team leadership or supervisory position. + Proven experience managing large-scale server environments . + Ability to manage priorities and handle complex technical challenges. + Relevant certifications such as Microsoft Server Administrator, RedHat Certified Engineer, VMWare VCP. + Operating systems: strong expertise in Windows Server (DNS, AD, DHCP, Group Policy) and Linux server administration (RHEL, RedHat Satellite). + Virtualization: working experience with VMWare vSphere, Hyper-V. + Automation and scripting: ability to write automation solutions in some language (e.g. Python, Ansible, Bash, Perl). + Monitoring and tools: Nagios/Icinga2 knowledge or any other similar monitoring tool. + Automated configuration management tool: CFEngine, Ansible. + Extensive knowledge of protocols: HTTP, DNS, NTP, SMTP. + EU citizenship is required. *This role may require flexibility, including shift-based work and on-call responsibilities, depending on operational needs. *The service window for this project is between 9am-10pm, the exact daily shifts will be confirmed later in the process.