senior network engineer

NTT Data Greece team is looking for a Senior Network Engineer in Athens to work with our clients in the European public sector.

As a Network Engineer, you will be responsible for designing, implementing, and maintaining secure and high-performance network infrastructure to support enterprise operations. You will work with a wide range of technologies and platforms to ensure seamless connectivity, security, and scalability across environments.

Your role:

•   Configuring and managing network protocols such as TCP/IP, OSPF, BGP, VLANs, and VPNs.

•   Administering and troubleshooting firewalls including Cisco ASA and Juniper SRX.

•   Managing and optimizing network and security platforms such as Juniper NSM and Junos Space.

•   Supporting switching and routing infrastructure using Cisco Nexus, Cisco ISR, and managing Production, vMotion, and Management VLANs.

•   Implementing and maintaining load balancing solutions using F5 BIG-IP.

•   Collaborating with virtualization teams to support VMware, Citrix, and containerized environments.

•   Monitoring network performance, identifying bottlenecks, and implementing improvements.

•   Ensuring network security, availability, and compliance with organizational policies.

•   Documenting network configurations, procedures, and incident resolutions.

•   Providing support for network-related incidents and participating in on-call rotations as needed.

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:   

•   Strong understanding of network protocols and routing technologies (TCP/IP, OSPF, BGP, VLANs, VPN).

•   Hands-on experience with Cisco ASA and Juniper SRX firewalls.

•   Proficiency in managing Juniper NSM and Junos Space platforms.

•   Experience with Cisco Nexus and ISR devices in enterprise environments.

•   Familiarity with F5 BIG-IP load balancers and their configuration.

• You must be eligible for EU Security Clearance (at least 5 years of EU nationality in required).