**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. At **NTT DATA** everything we do is guided by our **core values** . We respect every **voice** , think **bold** , deliver the **outcome** and win **together** . Our leadership approach enables our people to feel **inspired** to contribute, **empowered** to take initiative, and genuinely **cared** for in their growth and wellbeing. **NTT Data Greece** **team is looking for a** **Senior Windows Engineer** **in Athens to work with our clients in the** **European public sector.** As a **Senior Windows Engineer,** you will be responsible for the design, implementation, and maintenance of Windows-based systems and infrastructure. This role ensures high availability, performance, and security of enterprise systems, while also mentoring junior engineers and contributing to strategic IT initiatives. **Your role:** + Proactively monitor and ensure the operational health of client IT infrastructure and systems by identifying, investigating, and resolving technical incidents and problems. + Lead and support incident resolution processes to ensure swift restoration of services. + Implement and maintain Microsoft Windows Server technologies (Windows 2016 and above), System Center products such as SCOM, SCCM, and Orchestrator. + Design and deploy solutions incorporating WAN/LAN technologies, storage systems, and database systems, particularly Microsoft SQL. + Develop and utilize scripts (e.g., Powershell) for automation and efficiency. + Manage Active Directory services, including DHCP, DNS, and GPO, while maintaining firewall rules and concepts. + Collaborate in a dynamic, multinational environment, driving client-focused service and solutions. + Take ownership of responsibilities, lead technical teams, and work under pressure to meet deadlines. + Contribute to structured problem-solving and adhere to ITIL processes for operational efficiency. **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 We believe in work-life balance and flexibility. Wear casual clothing, decide your working hours and enjoy our hybrid working model Wear casual clothing, decide your working hours and enjoy our hybrid working model **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 degree in Computer Science, Information Technology, or equivalent level through experience and professional training. + Minimum 10 years of experience in a similar role. + Experience with Windows infrastructure in mid-to-large size environments. + Knowledge of Microsoft technologies, including Windows Server and System Center products. + Familiarity with WAN/LAN technologies, storage systems, Active Directory, and firewall principles. + Advanced scripting proficiency, particularly Powershell, to automate and enhance processes. + Proven ability to design complex architectures and solve problems methodically. + Service-oriented mindset and ability to communicate effectively in multicultural settings. + Initiative, accuracy, and attention to detail in all tasks. + Experience with McAfee ePO and related tools (VirusScan, Policy Auditor). + Familiarity with certificate-enabled technologies (SSL/TLS, S/MIME, Authentication, etc.). + Knowledge of VMware products, PKI implementation, and certificate lifecycle management. + Understanding of modern IT practices, including DevOps and cloud operations. + Excellent command of both spoken and written English , any other European languages are considered a plus. + You must be eligible for EU Security Clearance (at least 5 years of EU nationality in required). *This role may require flexibility, including shift-based work and on-call responsibilities, depending on operational needs