ITDS Portugal

ITDS is a leader in outsourcing IT engineers and works with various web and mobile technologies for over 30 global clients. It has been recognized as one of the 1000 fastest-growing companies in Europe for three consecutive years, Great Place to Work, and the Forbes Diamond award in 2023. ITDS currently has more than 600 IT professionals working in Portugal, Poland, and the Netherlands.

About company

Senior Network Infrastructure Engineer – Cisco & Wireless Expertise

On-site

location Lisbon

date October 12, 2026

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Empower your career by leading cutting-edge network infrastructure projects that shape the future of connectivity!

Location & Work Model

Lisbon-based opportunity with hybrid work model (up to 2 remote days per week).

Role Overview

As a Senior Network Infrastructure Engineer, you will be working for our client, a prominent European institution committed to advancing digital transformation through innovative network solutions. Your expertise will play a crucial role in enhancing and transforming critical network systems, ensuring operational stability, security, and scalability. This role offers a chance to contribute to impactful projects while developing your professional skills in a dynamic environment.

Your main responsibilities:

Monitor and maintain the network estate, promptly responding to alerts and troubleshooting issues across wired, wireless, access, and core networks.
Support NAC and authentication-related issues, ensuring seamless connectivity and security.
Participate in scheduled change windows and implement ad hoc fixes to optimize network performance.
Maintain comprehensive documentation, runbooks, and improve monitoring and observability tools.
Lead infrastructure transformation initiatives, including replacing legacy Cisco switches with Cisco Nexus/NX-OS and upgrading Wi-Fi environments with Cisco wireless platforms.
Implement Network Access Control (NAC) solutions, including 802.1X, RADIUS, and ISE, ensuring secure network access.
Deploy Cisco Catalyst Center (formerly DNA Center) as the primary network management platform, enhancing automation and configuration management.
Act as the senior technical lead, ensuring changes are planned, executed safely, and operational stability maintained.

You're ideal for this role if you have:

Minimum 6 years of experience in network engineering or related fields.
Hands-on expertise with Cisco Nexus/NX-OS and IOS/IOS-XE administration.
Proven experience with switch upgrades, replacements, and Cisco Wi-Fi implementation.
Familiarity with NAC solutions like 802.1X, RADIUS, and ISE.
Strong understanding of change management disciplines and operational support.
Willingness to learn and adaptability to evolving network technologies.
Experience with monitoring, observability, and automation tools.

It is a strong plus if you have:

Cisco Catalyst Center (formerly DNA Center) certification or experience.
Previous involvement in infrastructure transformation projects.

Language Required for the role:

Fluent English – excellent written and verbal communication skills.

Eligibility to work in Europe:

Only candidates with an existing legal right to work in the European Union will be considered for this role.

#MAKEYourCareerBETTER

Interested? Apply now and include your CV (preferably in English) along with a statement confirming your consent to the processing and storage of your personal data.

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