Senior Juniper Network Engineer - Remote, Upgrades

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

Benefits offered by this job

Great Place to Work

Medical care

Profit sharing

Internal trainings center

Open management

Job summary

Sii Poland is seeking an experienced Senior Network Administrator to manage production network platforms across global POPs, data centers, and backbone infrastructure. The role emphasizes lifecycle management, upgrade initiatives, and collaboration with vendors to ensure operational excellence.

The position offers remote work flexibility and requires strong English skills, along with hands-on experience with Cisco, Juniper, or Arista and core networking protocols.

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
• 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

Vendor coordination

English proficiency

Network troubleshooting

Tools

Cisco

Juniper

Arista

BGP

Job description

Sii Poland is seeking an experienced Senior Network Administrator to manage production network platforms across global POPs, data centers, and backbone infrastructure. The role emphasizes lifecycle management, upgrade initiatives, and collaboration with vendors to ensure operational excellence.

The position offers remote work flexibility and requires strong English skills, along with hands-on experience with Cisco, Juniper, or Arista and core networking protocols.