Senior Juniper Network Engineer - Global Infra (Remote)

Sii Poland; Katowice; On-site; PLN 180,000 - 260,000; Full time

Benefits offered by this job

Great Place to Work

Contract with big brands

Internal trainings centre

Profit sharing

Medical care

Job summary

Sii Poland is seeking an experienced Senior Network Administrator to manage production network platforms across global POPs and data centers. You will lead lifecycle management, coordinate fleet upgrades, and drive infrastructure rollouts while operating a dedicated lab for validation and automation tooling.

The role emphasizes collaboration with network engineers and vendors, escalation management, and robust documentation of resolutions, with advanced English and strong operational execution

Qualifications

• 5+ years in a production network environment with operational focus.
• Hands-on with Cisco, Juniper, or Arista networking platforms.
• Proficiency in BGP, OSPF/ISIS, and IPv4/IPv6.
• Experience in vendor escalations and coordinating resolutions.
• Advanced English proficiency.

Responsibilities

• Oversee lifecycle management for production network platforms across global POPs and data centers.
• Plan and execute fleet-wide network upgrade initiatives with readiness checks.
• Lead infrastructure rollout across global POPs, data centers, and backbone.
• Operate a dedicated lab to validate hardware, configurations, and automation tooling.
• Collaborate with engineers and vendors to investigate issues and document resolutions.
• Develop runbooks and procedures for network changes and lifecycle activities.

Skills

Network operations

Vendor management

English proficiency

Cross-functional collaboration

Tools

Cisco

Juniper

Arista

Python scripting

Ansible

Job description

Sii Poland is seeking an experienced Senior Network Administrator to manage production network platforms across global POPs and data centers. You will lead lifecycle management, coordinate fleet upgrades, and drive infrastructure rollouts while operating a dedicated lab for validation and automation tooling.

The role emphasizes collaboration with network engineers and vendors, escalation management, and robust documentation of resolutions, with advanced English and strong operational execution