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Senior Network Reliability Engineer (Cisco-Based Networking)

Kaizen Gaming Greece
Relocation
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AI Summary

The Senior Network Reliability Engineer at Kaizen Gaming ensures high availability, stability, and reliability of global network infrastructure across 10+ countries. This role involves designing, automating, and maintaining Cisco-based networks, monitoring systems, and security policies while collaborating with engineering and product teams. Requires 3+ years of hands-on experience in network reliability, automation, and troubleshooting with strong Ansible and monitoring tool expertise.

Key Highlights
Manages and maintains global Cisco-based network infrastructure across 10+ countries
Automates network operations using Ansible and implements observability tooling (e.g., Zabbix, Grafana)
Responsible for incident response, root cause analysis, and network security while collaborating with cross-functional teams
Key Responsibilities
Maintain network availability by proactively identifying and resolving connectivity issues
Operate and enhance network monitoring stack, including dashboards, alerts, and observability tooling
Develop and maintain Ansible playbooks for automation of repetitive tasks, configuration management, and network provisioning
Collaborate with engineers to design and implement on-premises and cloud-based network solutions
Respond to network incidents, perform root cause analysis, and document postmortems with preventive actions
Manage ACL policies in firewalls, install/configure network equipment (switches, routers, firewalls), and monitor performance trends
Administer the company’s wireless network and provide 2nd-level VPN support
Basic administration of Cisco UCM telephony system and escalation support for network issues
Technical Skills Required
Cisco Networking (IOS, Nexus, Catalyst, ASA, Meraki, Threat Defense, ISE) Ansible (playbooks, roles, automation for network provisioning) Network Monitoring (Zabbix, Grafana, alerting, dashboards)
Benefits & Perks
Hybrid work model (office + remote)
Competitive salary package and bonus scheme
Health and life insurance for employee and family
Nice to Have
CCNP or CCNA certification
Experience with NetBox or similar IPAM/DCIM tools
Hands-on experience with cloud networking (GCP, Azure)
Exposure to CI/CD pipelines for network-as-code workflows

Job Description


Let’s start with the role


A Network Reliability Engineer, as part of the Networks team, manages and maintains our company's network infrastructure. The Network Reliability Engineer will be in direct contact with internal stakeholders and external suppliers/providers, architecture, product engineering & product management. Along with the team, our new member will be responsible for translating business needs into technical solutions and implementing them.

#ouroneteam's goal is to eliminate operational inefficiencies and improve stability & reliability across Kaizen Gaming.

We are seeking a passionate and self-motivated Network Reliability Engineer who will have the opportunity to implement new technologies & enhance the existing ones. Sharing ideas & evolving on a dynamic & diverse Cisco-based network environment spanning across ten countries and continuously expanding will be everyday life!


As a Network Reliability Engineer, you will:


  • Maintain network availability by proactively identifying and resolving issues that impair connectivity
  • Operate and evolve our network monitoring stack — build and maintain dashboards, alerts, and observability tooling to ensure full visibility across the infrastructure
  • Develop and maintain Ansible playbooks and roles to automate repetitive operational tasks, configuration management, and network provisioning
  • Collaborate with Network Engineers to design and implement functional company networks, both on-prem and in Cloud environments
  • Respond to network incidents, perform root cause analysis, and drive resolution — contributing to postmortem documentation and preventive action items
  • Manage ACL policies in the company's firewalls according to business needs
  • Install and configure network equipment (switches, routers, firewalls)
  • Monitor network performance trends, identify capacity constraints, and flag risks before they become incidents
  • Manage the company's Wireless Network
  • Create and implement network security measures
  • Provide 2nd level support for VPN remote access
  • Basic administration of the company's Telephony System (Cisco UCM)
  • Deal with escalated network support issues


What you'll bring


  • At least 3 years of hands-on experience in Cisco-based network environments
  • Solid experience with network monitoring tools (e.g, Zabbix, Grafana, or similar) — including alert configuration and dashboard creation
  • Strong Ansible skills for network automation — writing and maintaining playbooks, roles, and inventories for Cisco environments
  • Good knowledge of TCP/IP, VLANs, Firewalls, and VPN technologies
  • Familiarity with Python and Ansible scripting for network tasks (data parsing, API calls, automation support)
  • Well-acquainted with Cisco network devices and appliances (Threat Defense, Nexus, Catalyst, IOS, ISE, ASA, Meraki etc.)
  • Experience working with ITSM tools and following structured change/incident management processes
  • Ability to perform duties in a fast-paced environment and quickly familiarise yourself with new technologies
  • Ability to work collaboratively in a team environment with agility


Nice to Have


  • CCNP or CCNA certification
  • Experience with NetBox or similar IPAM/DCIM tools for network documentation and source of truth management
  • Hands-on experience with cloud networking (GCP, Azure)
  • Exposure to CI/CD pipelines for network-as-code workflows


Kaizen Gaming Perks


  • 🕑 We offer both work from the office (hybrid model).
  • 🏃 A buddy will support you with your onboarding.
  • 💸Competitive salary package and bonus scheme.
  • 👩 ⚕️ Health and life insurance for you and your family.
  • 📚 Unlimited access to Udemy & continuous training for all your learning and development needs.
  • 💰 Monthly allowance for lunch & commuting expenses.
  • 💻Nice rigs - 2.5K monitor, latest i7, tons of RAM, fast SSD.
  • ⭐Clear career paths & a developmental 360° feedback framework.
  • ✈️ Relocation package and "Brain Gain" relocation bonus for Greek expats.


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We are an equal opportunity employer committed to fostering a diverse and inclusive workplace. We welcome applications from individuals of all backgrounds, regardless of race, gender, religion, sexual orientation,or age.



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