Troubleshooting & Incident Response
Own end-to-end troubleshooting of complex LAN connectivity, firewall policy, and load balancer issues, and drive resolution with customers and internal teams.
Conduct in-depth analysis of network incidents, identify root causes, and implement preventive measures to reduce repeat occurrences.
Lead and coordinate responses to network and security incidents, ensuring timely resolution and minimizing potential impacts.
Participate in on-call rotation following the Sun Model schedule; provide technical leadership during outages and lead post-incident root cause analysis and corrective action planning.
Lead the review, analysis, and execution of network change requests within the data-center fabric domain, ensuring adherence to change management and risk-mitigation standards.
Projects & Architecture
Lead and drive LAN infrastructure projects involving Cisco Nexus switching, Palo Alto firewalls, F5 load balancers, and NDFC fabric management.
Partner with cross-functional stakeholders to design and deliver next-generation data-center fabric architectures, leveraging VXLAN, Cisco Nexus Dashboard, Kubernetes networking (Calico), and AI/ML-enabled networking.
Manage and operate data-center fabric services across hybrid and multi-cloud environments — on-premises Cisco Nexus infrastructure, GCP, and AWS.
Perform traffic engineering and capacity planning to guide long-term infrastructure investments.
Develop and maintain technical roadmaps, architecture standards, and configuration policies for LAN, firewall, and load balancer environments.
Manage and maintain existing network infrastructure (Nexus, Palo Alto, F5), ensuring reliability, performance, and equipment lifecycle planning.
Monitoring & Observability
Develop and report operational and performance metrics using observability platforms including Prometheus, Grafana, and SolarWinds.
Define, measure, and report site reliability using SLI/SLO
Maintain operational focus on the data-center fabric while coordinating cross-team efforts with network security and load balancing functions to ensure end-to-end service reliability.
Analyze historical network incidents to identify systemic issues and inform preventive engineering.
Automation
Drive automation strategy and execution using Ansible, Terraform, Python, and CI/CD pipelines for provisioning, configuration, and monitoring.
Implement automated remediation to prevent recurrence of known issues.
Demonstrate and scale a culture of automation across engineering and operations teams.
Track and manage projects, processes, and technology initiatives across the team, ensuring alignment, visibility, and timely execution.
Maintain runbooks, topology diagrams, and SOPs.
Security
Manage overall network security including routing policies, Palo Alto firewall rules, and access controls to protect infrastructure.
Own all operational aspects of network security infrastructure — OS maintenance, vulnerability management, capacity planning, lifecycle management, and certificate administration.
Requirements
Bachelor's degree in computer science or a related technical field preferred, or equivalent practical experience.
Minimum 5 years of experience in medium-to-large networks, IP routing, switching, and security principles in a production SaaS or enterprise environment, including experience as a technical subject matter expert.
Deep hands-on expertise with Palo Alto firewalls — security policy design, Panorama management, Global Protect VPN, and threat prevention.
Advanced experience with F5 BIG-IP — LTM, GTM, iRules, SSL offloading, and application delivery configurations.
Expert-level knowledge of Cisco Nexus 9k/7k/5k/2k, NX-OS, and NDFC, including VXLAN/EVPN fabric deployments.
Extensive hands-on experience with software-defined networking (SDN) — OpenStack Neutron and Calico (Kubernetes).
Hands-on skills with Cisco IOS required; Nexus OS and NDFC expertise required.
Proven experience automating infrastructure processes and deployments using Ansible, Terraform, Python, and CI/CD pipelines, with demonstrated ability to drive and scale a culture of automation.
Demonstrated expertise in LAN protocols and technologies — VXLAN, EVPN, OSPF, BGP, MPLS, and STP/RSTP — with strong hands-on experience with dynamic routing protocols, particularly BGP in data-center fabric environments.
Experience implementing solutions involving large data centers, inter-business routing plans, site-to-site IPSec VPNs, firewalls, and MPLS VPNs.
Strong experience with network monitoring and observability tools — SolarWinds, Prometheus, Grafana, NetFlow, SNMP, and packet brokers.
Demonstrated experience with incident response, root cause analysis, change management, and operational governance; experience defining, measuring, and reporting reliability using SLI/SLO metrics.
Knowledge of Linux network functions and SaaS/cloud-based environments.
Knowledge of AWS and GCP cloud platforms, including cloud networking concepts such as VPCs, security groups, transit gateways, and cloud-based load balancing.
Proven ability to mentor engineers, lead technical projects independently, and manage multiple initiatives in parallel, with demonstrated project management skills.
Excellent communication skills, both oral and written; ability to clearly represent technical domains and team outcomes to senior leadership and non-technical stakeholders.
Nice to Have
Telecommunications technologies — VoIP, RTP, SIP peering/trunking, and SBC.
Work Location: This role is fully remote for candidates who reside outside a driving distance of 20-kilometers of our office. Candidates who reside within 20-kilometers driving distance of our office would be required to work in-office 2 days a week.
Work Location: This role is hybrid and requires 2 days a week in office.
Company Benefits
Company stocks
Annual merit increase based on performance
15% night shift differential pay
Paid Leave with Cash Conversion
HMO with free dependents
Retirement Plan
Life Insurance
While on work from home setup: Internet and meal allowance are provided
Employee Assistance Program for mental and social well-being
Government-mandated Benefits (SSS, PhilHealth, PagIBIG, 13th month pay, Solo parent leave, Special leave for women)
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.
Our headquarters are located in the beautiful Bishop Ranch Business Park in San Ramon, CA.
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.
Five9 is committed to providing reasonable accommodations for qualified individuals with disabilities throughout the application and interview process. If you need assistance or an accommodation due to a disability, please contact us at accommodations@five9.com to request an accommodation. Requests will be handled confidentially and in accordance with applicable law.
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.
