Senior Global Network Engineer - Lifecycle Ops (Remote)

Sii Poland; Białystok; On-site; PLN 180,000 - 240,000; Full time

Benefits offered by this job

Great Place to Work

Profit sharing

Medical care

Centre of internal trainings

Open management team

Regular integration events

MySii app

Job summary

Sii Poland is seeking an experienced Senior Network Administrator to manage lifecycle and upgrades of production network platforms across global POPs and data centers. The role involves coordinating with engineers and vendors to ensure smooth operations and to drive infrastructure resilience.

The ideal candidate will have at least 5 years in production networks, hands-on Cisco/Juniper/Arista experience, and strong expertise in BGP, OSPF/ISIS, IPv4/IPv6, plus advanced English.

Qualifications

• Minimum 5 years in a production network environment.
• Hands-on experience with Cisco, Juniper or Arista.
• Proficient in BGP, OSPF/ISIS and IPv4/IPv6.
• Experience managing vendor escalations.
• Advanced level of English.

Responsibilities

• Support lifecycle management for production network platforms globally.
• Plan and execute fleet-wide network upgrade initiatives.
• Lead infrastructure rollout across global POPs, data centers and backbone network.
• Operate a dedicated lab and test environment for validation.
• Collaborate with network engineers and vendors to resolve platform issues.
• Document resolutions and update runbooks and procedures.
• Ensure cross-functional alignment for scalability and compliance.

Skills

BGP

OSPF/ISIS

IPv4/IPv6

English

Tools

Cisco

Juniper

Arista

Ansible

Python

Job description

Sii Poland is seeking an experienced Senior Network Administrator to manage lifecycle and upgrades of production network platforms across global POPs and data centers. The role involves coordinating with engineers and vendors to ensure smooth operations and to drive infrastructure resilience.

The ideal candidate will have at least 5 years in production networks, hands-on Cisco/Juniper/Arista experience, and strong expertise in BGP, OSPF/ISIS, IPv4/IPv6, plus advanced English.