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Senior Infrastructure Engineer
  • Rzeszow
Senior Infrastructure Engineer
Rzeszów, Rzeszow, Podkarpackie Voivodeship, Polska
Sii Sp. z o.o.
29. 11. 2025
Informacje o stanowisku

technologies-expected :


  • Cisco
  • LAN
  • WLAN
  • Microsoft 365
  • Microsoft Exchange Server
  • Linux

technologies-optional :


  • ZScaler
  • CentOS
  • Cisco Meraki
  • Red Hat

about-project :


  • We are looking for an experienced Senior Infrastructure Engineer who will join a project carried out in cooperation with a client from the Retail sector. The project includes a full modernization of the infrastructure environment, work with network and system technologies, and a real impact on the development of IT infrastructure in the organization.
  • The role requires hybrid work (2-3 days in the client’s office per week) and several delegations related to overseeing implementations of the new infrastructure in locations in Poland.

responsibilities :


  • Participation in the modernization and development of network infrastructure based on Cisco Meraki and Zscaler
  • Work in a hybrid Microsoft 365 environment, including support and management of AD On-Prem, ADConnect, Exchange On-Prem and Exchange Online
  • Administration and standardization of Linux servers, ultimately based on CentOS/RedHat
  • Supervision over the implementation of new infrastructure in the client’s locations in Poland
  • Cooperation with the team within the IT Operations Competence Center and participation in project work related to the replacement of the entire technology stack

requirements-expected :


  • 5 years of experience in roles related to network or infrastructure management
  • Very good knowledge of network infrastructure, in particular Cisco
  • Hands-on experience in a Microsoft 365 hybrid environment
  • Ability to administer Linux systems, preferably CentOS/RedHat
  • Knowledge of the Windows environment at the administrative level (endpoint management)
  • Readiness for occasional business trips
  • Ability to work in a team
  • Very good English language skills

offered :


  • Great Place to Work since 2015 - it’s thanks to feedback from our workers that we get this special title and constantly implement new ideas
  • Employment stability - revenue of PLN 2.1BN, no debts, since 2006 on the market
  • We share the profit with Workers - over PLN 76M has already been allocated for this aim since 2022
  • Attractive benefits package - private healthcare, benefits cafeteria platform, car discounts and more
  • Comfortable workplace – class A offices or remote work
  • Dozens of fascinating projects for prestigious brands from all over the world – you can change them thanks to Job Changer application
  • PLN 1 000 000 per year for your ideas - with this amount, we support the passions and voluntary actions of our workers
  • Investment in your growth – meetups, webinars, training platform and technology blog – you choose
  • Fantastic atmosphere created by all Sii Power People

  • Praca Rzeszów
  • Rzeszów - Oferty pracy w okolicznych lokalizacjach


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