Senior Network & Cloud Engineer

Claranet limited; Lisboa; On-site; EUR 90,000 - 120,000; Full time

Job summary

Claranet is seeking a Senior Network & Cloud Engineer to join the Lisbon-based internal team. You will design, implement, and manage network architectures across on-premises, Azure, and hybrid environments.

Key responsibilities include configuring VPN Gateway, ExpressRoute, Azure Firewall, and Private Link, while enforcing Zero Trust and security best practices. Collaboration with Cloud, Infra, and Security teams is essential.

Qualifications

• Solid experience in Network Engineering, Cloud Networking, or Network Security.
• Advanced experience with Microsoft Azure Networking.
• Strong knowledge of TCP/IP, routing, switching, DNS, BGP, NAT, IPsec, VPN, and TLS.
• Experience with enterprise firewalls and network security policies.
• Knowledge of hardening, access control, and infrastructure security.
• Ability to troubleshoot in complex and distributed environments.
• Experience with scripting or automation, preferably PowerShell, Python, or equivalent.
• Good knowledge of technical English.
• Ability to work independently, a sense of responsibility, and a focus on problem-solving.

Responsibilities

• Design, implement, and manage network architectures in on-premises, Azure, and hybrid environments.
• Work with Azure components such as Virtual Networks, subnets, and routing.
• Configure VPN Gateway and ExpressRoute connections.
• Manage Azure Firewall and Network Security Groups.
• Implement Zero Trust principles, network segmentation, and least privilege.
• Monitor availability, performance, and security of infrastructure.
• Investigate incidents and identify root causes.
• Collaborate with Cloud, Infrastructure, Security Operations, and Operations teams.
• Contribute to automation, documentation, and continuous improvement.
• Support migration and modernization projects.

Skills

Network Engineering

Cloud Networking

Network Security

Azure Networking

TCP/IP

VPN

PowerShell

Python

English Proficiency

Troubleshooting

Tools

Azure VPN Gateway

ExpressRoute

Azure Firewall

Application Gateway

Private Link

Private DNS

BGP

Job description

We're fast learners, hard workers, natural collaborators... and weMake Modern Happen!

Our ambition is to unlock the potential of our digital world so that organisations everywhere can innovate and thrive securely.

We aim to achieve this goal by bringing together the world’s most talented people and the most powerful technologies, combining them to address our customers' challenges and to build something stronger together.

Right now, we are looking for a Senior Network & Cloud Engineer to integrate our internal team, based inLisbon.

Your responsibilities include:

• Design, implement, and manage network architectures in on-premises, Azure, and hybrid environments;
• Work with Azure components such as:
• Virtual Networks, subnets, and routing;
• VPN Gateway and ExpressRoute;
• Azure Firewall and Network Security Groups;
• Application Gateway, Load Balancer, and Private Link;
• Private DNS and connectivity between environments.
• Ensure secure connectivity between data centers, offices, cloud platforms, and enterprise systems;
• Implement Zero Trust principles, network segmentation, and least privilege;
• Manage firewalls, VPNs, security policies, and traffic protection mechanisms;
• Monitor the availability, performance, and security of the infrastructure;
• Investigate and resolve network and security incidents, identifying the root cause;
• Collaborate with Cloud, Infrastructure, Security Operations, and Operations teams;
• Contribute to the automation, documentation, and continuous improvement of environments;
• Support migration, transformation, and technology modernization projects.

You must have:

• Solid experience in Network Engineering, Cloud Networking, or Network Security;
• Advanced experience with Microsoft Azure Networking;
• Strong knowledge of TCP/IP, routing, switching, DNS, BGP, NAT, IPsec, VPN, and TLS;
• Experience with enterprise firewalls and network security policies;
• Knowledge of hardening, access control, and infrastructure security;
• Ability to troubleshoot in complex and distributed environments;
• Experience with scripting or automation, preferably PowerShell, Python, or equivalent;
• Good knowledge of technical English;
• Ability to work independently, a sense of responsibility, and a focus on problem-solving.

We value:

• Experience with Google Cloud Platform, specifically VPC, Cloud VPN, Cloud Interconnect, Cloud Load Balancing, and Cloud DNS;
• Knowledge of Terraform, Bicep, ARM Templates, or other Infrastructure as Code tools;
• Experience with Cisco, Fortinet, Palo Alto, Check Point, or equivalent solutions;
• Knowledge of Kubernetes Networking, SD-WAN, SASE/SSE, or SIEM/SOAR;
• Certifications such as Azure Network Engineer Associate, Azure Security Engineer Associate, CCNP, or Google Cloud Professional Cloud Network Engineer;
• Experience in regulated environments or those with high security and availability requirements.