Senior Network Engineer (Juniper, Remote)

Sii Poland; Poznań; On-site; PLN 150,000 - 230,000; Full time

Benefits offered by this job

Great Place to Work

Solid financial situation

Centre of internal trainings

Many experts you can learn from

Open and accessible management team

Profit sharing

Passion Sponsorship program

Regular integration events and trips

Comfortable and well-equipped offices

Medical care

Job summary

Sii Poland is seeking an experienced Senior Network Administrator to join our team, focusing on managing production network platforms across global POPs and data centers. You will collaborate with network engineers and vendors to ensure operational excellence while executing network upgrade initiatives and maintaining network infrastructure.

You will participate in a dedicated lab for hardware validation and work with automation tooling, drive scalability, and ensure compliance through

Qualifications

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

Responsibilities

• Support lifecycle management for production network platforms across global POPs and data centers.
• Plan and execute fleet-wide network upgrade initiatives and readiness checks.
• Lead infrastructure rollout across global POPs and backbone network.
• Operate a dedicated lab to validate hardware, configurations, and automation tooling.
• Partner with network engineers and vendors to investigate issues and resolve escalations.
• Collaborate cross-functionally to support scalability, compliance, and consistency.
• Contribute to runbooks, processes, and procedures for changes and lifecycle activities.

Skills

5+ years in production network

Cisco/Juniper/Arista

Networking protocols (BGP, OSPF/ISIS,

English proficiency

Tools

Python scripting

Ansible

Job description

Sii Poland is seeking an experienced Senior Network Administrator to join our team, focusing on managing production network platforms across global POPs and data centers. You will collaborate with network engineers and vendors to ensure operational excellence while executing network upgrade initiatives and maintaining network infrastructure.

You will participate in a dedicated lab for hardware validation and work with automation tooling, drive scalability, and ensure compliance through