Network Engineer with Juniper - large scale intrastructure (f/m/x)

We are looking for an experienced Senior Network Administrator to join our team, focusing on managing and supporting production network platforms. In this role, you will be responsible for lifecycle management across global Points of Presence (POPs), data centers, and backbone infrastructure. You will collaborate with network engineers and vendors to ensure operational excellence while executing network upgrade initiatives and maintaining network infrastructure. This position offers the flexibility of remote work. If you are passionate about network administration and infrastructure management, this opportunity may be the right fit for you.
Your tasks
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
Requirements
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
Nice to have
Strong organizational and execution skills with attention to detail
Effective cross-functional communication and collaboration skills
Scripting ability in Python or a similar language
Familiarity with network automation tools such as Ansible
Experience improving operational processes by reducing manual steps and increasing repeatability
Job no. JOB-YD2G2
Sii ensures that all hiring decisions are made solely on the basis of qualifications and competence. We are committed to equal and fair treatment of all, regardless of legally protected characteristics. At Sii, we promote a diverse and inclusive work environment, in full compliance with applicable anti-discrimination laws.
Benefits For You
Great Place to Work
Solid financial situation
Contracts with the biggest brands
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
MySii app
Medical care

Work arrangement
Yes