Senior Network Engineer

Your mission

At Telio, we build technology that reconnects people.

Our systems enable hundreds of thousands of inmates to stay connected with their families and loved ones. We believe correctional facilities should not only serve as punishment, but also as an opportunity for rehabilitation and a second chance. Through secure communication technology, digital services, and modern software platforms, we elevate the professional and human standards of correctional institutions and other regulated environments (e.g., clinics and state institutions).

This is a mission-critical internal product environment where reliability, security, and engineering excellence directly impact real lives.

As a Senior Network Engineer , you will take end‑to‑end responsibility for designing, operating, and continuously improving complex on‑premise, cloud, and Kubernetes network environments. You’ll act as a technical authority in network operations, drive stability and modernization, and collaborate closely with international platform, cloud, and security teams.

This role combines hands‑on engineering , architecture‑level thinking , and operational ownership in a modern hybrid infrastructure.

Your profile

Duties and responsibilities

• Design, install, configure, and operate enterprise‑grade network environments across on‑prem, virtualized, cloud (Azure, AWS), and hybrid platformsÂ
• Ensure high availability, performance, resilience, and security across physical infrastructure, cloud networks, and platform environmentsÂ
• Architect and operate firewall and network security solutions, integrating FortiGate, Cisco Firepower, and cloud‑native security controlsÂ
• Design and maintain secure traffic flows and network segmentation in hybrid and cloud‑connected environmentsÂ
• Design and operate hybrid connectivity solutions (Site‑to‑Site VPN, Client VPN, ExpressRoute / Direct Connect)Â
• Own routing, CIDR planning, and traffic management across on‑prem, cloud, and Kubernetes environmentsÂ
• Support and troubleshoot Kubernetes networking including CNI operation, ingress/egress, external access, and Network PoliciesÂ
• Act as senior 2nd‑level / 3rd‑level escalation for complex network and connectivity issuesÂ
• Drive incident management and root cause analysis, communicating impact and resolution clearly to stakeholdersÂ
• Monitor and optimize network performance using centralized observability tools, logs, metrics, and flow analyticsÂ
• Plan and execute network upgrades, lifecycle activities, and modernization initiativesÂ
• Operate and improve network infrastructure managed by Infrastructure as Code (Terraform, Bicep, CloudFormation)Â
• Reduce manual configuration through automation and API‑driven workflowsÂ
• Develop and maintain disaster recovery and resilience concepts, including failover testingÂ
• Ensure networks meet audit, compliance, and security standards in regulated environmentsÂ
• Maintain high‑quality architecture diagrams, documentation, and operational proceduresÂ
• Collaborate with international IT, cloud, platform, and security teams, and contribute to cross‑border projects
• Participate in on‑call rotations and provide technical guidance to less‑senior engineers

Required Qualifications, Experience & Competencies

Professional Experience & Skills

• 5+ years of experience as a Network Engineer in enterprise environments
• Strong expertise in TCP/IP, routing, NAT, VLANs, firewalls, load balancing
• Hands‑on experience with Azure and/or AWS networking
• Solid understanding of Kubernetes networking concepts and CNI implementations
• Proven ability to troubleshoot complex issues across on‑prem, cloud, and Kubernetes layers
• Experience working in international, distributed teams (3+ years)
• Strong incident and operational mindset with ownership mentality
• Experience with Infrastructure as Code and Git‑based workflows
• Ability to operate effectively across classic infrastructure and modern platform teams
• Strong technical documentation and communication skills
• Relevant certifications (CCNA, Fortinet, Extreme or comparable)
• Experience with enterprise telephony systems (nice to have)

Why us?

We are offering Â

• Professional challenges, inspiring, diverse tasks
• Learning path on new technologiesÂ
• Multiculture environment
• Flexible working hours and home office days
• Relaxed atmosphere, steady, supportive international team
• Easily accessible modern office with good infrastructure
• Complimentary coffee, fruit and snacks