Senior Windows Engineer

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.

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