Senior Network Engineer – Global Infra (Juniper/Cisco)

Sii Sp. z o.o.; Wrocław; Remote; PLN 180,000 - 240,000; Full time

Benefits offered by this job

Great Place to Work since 2015

Private healthcare

Benefits cafeteria platform

Comfortable workplace – class A/offers

Job summary

Sii Sp. z o.o. is seeking a Senior Network Engineer to manage and support production network platforms across global POPs and data centers.

You will drive lifecycle activities, coordinate upgrades, and lead infrastructure rollouts with a focus on reliability and performance. Remote work flexibility is offered alongside on-site collaboration. The role requires strong experience with Cisco/Juniper/Arista gear, deep knowledge of BGP/OSPF/ISIS, and proven vendor escalation capabilities, with

Qualifications

• Minimum 5 years of experience in a production network environment.
• Hands-on experience with Cisco, Juniper, or Arista platforms.
• Strong knowledge of BGP, OSPF/ISIS, and IPv4/IPv6.
• Experience with large-scale network operations and change management.
• Ability to coordinate vendor escalations and support resolutions.
• Advanced English language skills.

Responsibilities

• Support 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 POPs, data centers, and backbone networks.
• Operate a dedicated lab to validate hardware, configurations, and tooling.
• Collaborate with engineers and vendors to resolve platform issues.
• Contribute to runbooks, processes, and operational procedures for changes.

Skills

Network engineering

English proficiency

Vendor escalation handling

Tools

Cisco

Juniper

Arista

Ansible

Python

Job description

Sii Sp. z o.o. is seeking a Senior Network Engineer to manage and support production network platforms across global POPs and data centers.

You will drive lifecycle activities, coordinate upgrades, and lead infrastructure rollouts with a focus on reliability and performance. Remote work flexibility is offered alongside on-site collaboration. The role requires strong experience with Cisco/Juniper/Arista gear, deep knowledge of BGP/OSPF/ISIS, and proven vendor escalation capabilities, with