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 platforms
Ensure high availability, performance, resilience, and security across physical infrastructure, cloud networks, and platform environments
Architect and operate firewall and network security solutions, integrating FortiGate, Cisco Firepower, and cloud‑native security controls
Design and maintain secure traffic flows and network segmentation in hybrid and cloud‑connected environments
Design and operate hybrid connectivity solutions (Site‑to‑Site VPN, Client VPN, ExpressRoute / Direct Connect)
Own routing, CIDR planning, and traffic management across on‑prem, cloud, and Kubernetes environments
Support and troubleshoot Kubernetes networking including CNI operation, ingress/egress, external access, and Network Policies
Act as senior 2nd‑level / 3rd‑level escalation for complex network and connectivity issues
Drive incident management and root cause analysis, communicating impact and resolution clearly to stakeholders
Monitor and optimize network performance using centralized observability tools, logs, metrics, and flow analytics
Plan and execute network upgrades, lifecycle activities, and modernization initiatives
Operate and improve network infrastructure managed by Infrastructure as Code (Terraform, Bicep, CloudFormation)
Reduce manual configuration through automation and API‑driven workflows
Develop and maintain disaster recovery and resilience concepts, including failover testing
Ensure networks meet audit, compliance, and security standards in regulated environments
Maintain high‑quality architecture diagrams, documentation, and operational procedures
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
Professional challenges, inspiring, diverse tasks
Learning path on new technologies
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