Network Engineer

Five9

Portugal · Full-time · Entry

Join us in bringing joy to customer experience. Five9 is a leading provider of cloud contact center software, bringing the power of cloud innovation to customers worldwide.

Living our values everyday results in our team-first culture and enables us to innovate, grow, and thrive while enjoying the journey together. We celebrate diversity and foster an inclusive environment, empowering our employees to be their authentic selves.

Five9 is a leading provider of cloud software for the enterprise contact center market, bringing the power of the cloud to thousands of customers and facilitating more than three billion customer interactions annually. Since 2001, Five9 has led the cloud revolution in contact centers, helping organizations transition from legacy premise-based solutions to the cloud. Five9 provides businesses with cloud contact center software that is reliable, secure, compliant and scalable, which is designed to create exceptional customer experiences, increase agent productivity and deliver tangible business results.

To complement our rapid growth, we are actively sourcing for a Network Engineer to operate in a 24/7 Software-as-a-Service (SaaS) environment maintaining IP Networking components in a production setting.

In this role you will:

Participate in projects for Network Operation improvements
Review and analyze history of network related incidents and perform preventive measures
Troubleshoot network related issues and communicate with customers
Implement best security practices
Assist in managing network service providers and equipment
Provide capacity analysis and planning

Key Responsibilities:

Interact with external customers to troubleshoot any network connectivity related issues
Partner closely with Network Architects and Engineers to improve data-center network environments
Initiate multiple projects for Network Operation improvements
Partner with internal business units to best understand the organization's needs and continuously improve and apply standards for operational excellence
Review, analyze and execute network change requests
Execute, document, and develop network automation for repetitive tasks

Requirements:

Minimum 3-5 years of experience in medium to large networks, IP Routing, Switching, and Security principles
Knowledge and experience in Palo Alto firewalls
Knowledge and experience in load balancing technologies such as F5
Knowledge and experience in Cisco Nexus 9k/7k/5k/2k
Network automation experience, e.g. ansible, terraform, python strongly preferred
Hands-on skills for Cisco IOS is required and Nexus OS preferred
Demonstrated knowledge of platform operating systems (router platforms, LAN, WAN, and router protocols) MPLS, OSPF, and BGP, and how they interact with the network
Demonstrated operational success with an exceptionally strong data-driven analytical approach towards solving complex challenges
Documenting solutions with diagrams and proper description is required
Experience with incident response, information assurance, computer security best practices, system hardening, vulnerability management, antivirus, SIEM, firewalls, IPS/IDS monitoring, and techniques for analyzing TCP/IP network traffic and event logs
Telecommunications experience - VoIP, RTP, SIP peering/trunking and SBC preferred
VXLAN experience is a plus
Experience with implementations of solutions involving large data centers, interoffice routing plans, site2site VPNs, FWs, IPSec, monitoring, etc. is a plus
Experience with network analysis tools- netflow, snmp, packet brokers, etc. is a plus
Knowledge of Linux network functions; SaaS/Cloud-based software environment a plus, but not required
Excellent communications, both oral and written

Benefits:

Five9 Shares
Bonus Scheme
10% Flex Benefit
Meal Allowance
Medical Insurance
Life Insurance
25 day Annual Leave + Public Holidays

Five9 embraces diversity and is committed to building a team that represents a variety of backgrounds, perspectives, and skills.  The more inclusive we are, the better we are.  Five9 is an equal opportunity employer.

View our privacy policy, including our privacy notice to California residents here: https://www.five9.com/pt-pt/legal.

Note: Five9 will never request that an applicant send money as a prerequisite for commencing employment with Five9.

Key Skills

Ranked by relevance

cloud nexus incident response terraform firewalls palo alto ansible netflow python linux ipsec ospf saas snmp siem vpns mpls voip wan lan bgp ios

Related Jobs

3 roles aligned with this opportunity

View all jobs

Sr Cloud Engineer | Infrastructure & Networking | Europe remote

2026-06-17

Full-time

Not Applicable

Slovenia

Software Development

Engineering