Network Engineer Senior

Claranet limited; Lisboa; Presencial; EUR 65 000 - 90 000; Tempo integral

Resumo da oferta

Claranet limited in Lisbon invites a Senior Network Engineer to join our internal team. You will resolve critical incidents, provide Level 3 support, and optimize LAN/WAN/WLAN and data center networks while managing SD-WAN, cloud networking, and virtualization environments.

You will define architectures, perform RCA, lead capacity planning, and mentor junior engineers while maintaining security controls and vendor partnerships.

Qualificações

• Proven experience in Network Operations, Administration and Support.
• Strong expertise in LAN, WAN, WLAN and Data Center networking.
• Advanced troubleshooting and problem-solving skills.
• Experience providing Level 3 (L3) network support.
• Knowledge of routing and switching (BGP, OSPF, STP, QoS, VRF).
• Experience with security technologies: Firewalls and VPNs.
• Experience leading complex incident resolution and RCA.
• Experience planning complex network changes.
• Experience working with vendors.

Responsabilidades

• Manage and resolve critical and complex network incidents.
• Provide Level 3 technical support.
• Administer and optimize LAN, WAN, WLAN and Data Center networks.
• Manage SD-WAN, Cloud Networking and Network Virtualization.
• Plan and implement complex network changes.
• Define and validate network architectures and technical solutions.
• Perform RCA for major incidents and recurring issues.
• Lead network performance optimization and capacity management.
• Administer advanced network security technologies and controls.
• Provide technical leadership for implementation and migration projects.
• Develop and maintain infrastructure automation solutions.
• Define technical standards, procedures and best practices.
• Mentor junior engineers; manage vendor relationships.
• Produce and maintain high-level technical documentation.

Conhecimentos

LAN/WAN/WLAN

BGP OSPF

L3 Network Support

Network Operations

Routing & Switching

VPN & Firewalls

Vendor Liaison

Network Documentation

ITIL Awareness

Formação académica

Ferramentas

SD-WAN

Data Center Networking

Descrição da oferta de emprego

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

Our ambition is tounlock the potential of our digital world so that organisations everywhere caninnovate and thrive securely.

We aim to achievethis goal by bringing together the world’s most talented people and the mostpowerful technologies, combining them to address our customers' challenges and tobuild something stronger together.

Right now, we arelooking for aNetwork Engineer Senior to integrate our internalteam, based inLisbon.

Your responsibilitiesinclude:

• Manage and resolve critical and complex network incidents;
  
• Provide specialized Level 3 (L3) technical support;
  
• Administer and optimize LAN, WAN, WLAN, and Data Center networks;
  
• Manage SD-WAN, Cloud Networking, and Network Virtualization environments;
  
• Plan and implement complex network changes;
  
• Define and validate network architectures and technical solutions;
  
• Perform Root Cause Analysis (RCA) for major incidents and recurring issues;
  
• Lead network performance optimization and capacity management initiatives;
  
• Administer advanced network security technologies and controls;
  
• Provide technical leadership for implementation and migration projects;
  
• Develop and maintain infrastructure and operational automation solutions;
  
• Define technical standards, procedures, and best practices;
  
• Mentor and provide technical guidance to junior engineers;
  
• Manage technical relationships with vendors and technology manufacturers;
  
• Produce and maintain high-level technical documentation;
  
• Participate in governance meetings and technical customer engagements;
  
• Identify and implement continuous improvement initiatives;
  
• Ensure the technical quality, stability, and reliability of networkservices;
  
• Support Service Delivery teams in service management and technologyevolution.
  

You must have:

• Proven experience in Network Operations, Administration and Support;
  
• Strong expertise in LAN, WAN, WLAN and Data Center networking;
  
• Advanced troubleshooting and problem-solving skills;
  
• Experience providing Level 3 (L3) network support;
  
• Strong knowledge of Routing and Switching technologies (BGP, OSPF,STP, QoS, VRF);
  
• Experience with network security technologies, including Firewallsand VPNs;
  
• Experience leading complex incident resolution and Root CauseAnalysis (RCA);
  
• Experience planning and implementing complex network changes;
  
• Experience working with vendors and technology manufacturers;
  
• Experience producing technical documentation and network designs;
  
• Knowledge of ITIL Incident, Problem and Change Management processes;
  
• Customer-facing experience in Managed Services environments;
  

We value:

• Fortinet NSE5/NSE7 certification;
  
• Check Point Certified Security Administrator/Expert (CCSA/CCSE);
  
• Aruba Certified (ACMP/ACSA) certification;
  
• ITIL certification;
  
• Experience with SD-WAN and network security solutions;
  
• Dynamism and initiative;
  
• High sense of responsibility;
  
• Problem-solving skills;
  
• Good communication;
  
• Team spirit and interpersonal skills;
  
• Results-oriented;
  
• Stress management and emotional control.