Remote Senior Juniper Network Engineer & Ops Lead

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

Benefits offered by this job

Great Place to Work

Profit sharing

Centre of internal trainings

Open management team

Medical care

Job summary

Sii Poland is seeking an experienced Senior Network Administrator to manage production network platforms, lifecycle management across global POPs, data centers, and backbone infrastructure. The role offers the flexibility of remote work and requires collaboration with network engineers and vendors to ensure operational excellence.

You will plan and execute fleet-wide upgrades, validate hardware and configurations in a dedicated lab, and contribute to runbooks and processes to improve

Qualifications

• Minimum 5 years of production network experience.
• Hands-on with Cisco, Juniper or Arista devices.
• Expert in BGP, OSPF/ISIS and IPv4/IPv6 protocols.
• Experience managing vendor escalations and resolutions.
• Advanced level of English written and spoken.

Responsibilities

• Support lifecycle management for production network platforms across global POPs and data centers.
• Plan and execute fleet-wide network upgrades with readiness checks.
• Lead infrastructure rollout across POPs, data centers, and backbone.
• Operate a lab to validate hardware, configurations, and automation tooling.
• Collaborate with engineers and vendors to resolve platform issues.
• Coordinate with teams to ensure scalability and operational consistency.
• Contribute to runbooks, processes, and lifecycle management procedures.

Skills

BGP

OSPF/ISIS

IPv4/IPv6

Vendor management

English proficiency

Tools

Cisco

Juniper

Arista

Job description

Sii Poland is seeking an experienced Senior Network Administrator to manage production network platforms, lifecycle management across global POPs, data centers, and backbone infrastructure. The role offers the flexibility of remote work and requires collaboration with network engineers and vendors to ensure operational excellence.

You will plan and execute fleet-wide upgrades, validate hardware and configurations in a dedicated lab, and contribute to runbooks and processes to improve