Senior Network Engineer – Remote (Juniper/Cisco, BGP)

Sii Sp. z o.o.; Katowice; Remote; PLN 180,000 - 260,000; Full time

Benefits offered by this job

Private healthcare

Car discounts

Remote work flexibility

Great workplace culture

Job summary

Sii Sp. z o.o. in Katowice is seeking a Senior Network Engineer to manage production network platforms across global POPs and data centers. You will lead upgrade initiatives, coordinate vendor escalations, and operate a test lab to validate hardware and automation tooling.

The role requires 5+ years in production networks, strong English, and hands-on experience with Cisco/Juniper/Arista. Remote work flexibility is offered, with a focus on reliable, scalable network operations.

Qualifications

• Minimum 5 years of experience in a production network environment with a focus on operational execution.
• Hands-on experience with networking platforms such as Cisco, Juniper, or Arista.
• Proficiency in core networking protocols, including BGP, OSPF/ISIS, and IPv4/IPv6.
• Solid understanding of large-scale network operations, including executing network change operations and software upgrades.
• Demonstrated ability to manage vendor escalations and coordinate support resolution.
• Advanced level of English.

Responsibilities

• Supporting lifecycle management for production network platforms, including hardware, software, firmware, and operating system versions across global POPs and data centers.
• Planning, coordinating, and executing fleet-wide network upgrade initiatives, ensuring device qualification and readiness checks are performed.
• Leading infrastructure rollout efforts across global POPs, data centers, and the backbone network.
• Operating a dedicated lab and test environment to validate hardware platforms, configurations, and automation tooling.
• Partnering with network engineers and vendors to investigate platform issues, manage support escalations, and document resolution paths.
• Collaborating cross-functionally to support network scalability, compliance, and operational consistency.
• Contributing to runbooks, process documentation, and operational procedures for network changes and lifecycle management activities.

Skills

Network Administration

Database Administration

Cisco

Juniper Networks IDP

Arista

BGP

IPv4/IPv6

Splank

Network Infrastructure

Communication skills

Ansible

Python

Tools

Ansible

Python

Job description

Sii Sp. z o.o. in Katowice is seeking a Senior Network Engineer to manage production network platforms across global POPs and data centers. You will lead upgrade initiatives, coordinate vendor escalations, and operate a test lab to validate hardware and automation tooling.

The role requires 5+ years in production networks, strong English, and hands-on experience with Cisco/Juniper/Arista. Remote work flexibility is offered, with a focus on reliable, scalable network operations.