June 16, 2026

IT Systems & Security Administrator

Senior • Hybrid

Warsaw, Poland

We are looking for an experienced IT Systems & Security Administrator to support and maintain a hybrid IT infrastructure environment. This is a freelance role with an expected workload of approximately 40 hours per month, primarily remote with occasional on-site visits in Warsaw required.

Your responsibilities:

  • Monitor network and system infrastructure using the ELK Stack (Elasticsearch, Logstash, Kibana).

  • Maintain and develop security environments based on Palo Alto Networks firewalls.

  • Manage VPN configurations and collaborate with identity management administrators supporting Microsoft Entra ID.

  • Administer Windows Server environments, Hyper-V, Active Directory, and Microsoft Exchange Server.

  • Oversee and support integrations between on-premises infrastructure and Microsoft Cloud services.

  • Perform regular vulnerability assessments using Nessus and prepare security reports, findings, and remediation recommendations.

  • Provide technical support to users and IT teams regarding access to services, network resources, and business applications.

  • Investigate incidents, troubleshoot connectivity and communication issues, and recommend corrective actions.

  • Collaborate with customer infrastructure teams during system changes, upgrades, and deployments.

  • Support network equipment administration, including basic switch configuration and maintenance.

  • Analyze system and network logs to identify performance, security, and operational issues.

We are looking for you, if you have:

  • Proven experience in administering and maintaining enterprise network and systems infrastructure.

  • Hands-on experience with the ELK Stack (Elasticsearch, Logstash, Kibana) for infrastructure monitoring, log analysis, and incident investigation.

  • Strong practical knowledge of Palo Alto Networks firewalls, including HA clusters, security policy management, software upgrades, VPN administration, and multi-ISP environments.

  • Experience administering Windows Server, Hyper-V, Active Directory, and Microsoft Exchange Server environments.

  • Knowledge of integrating on-premises infrastructure with Microsoft Cloud services.

  • Practical experience with SAML-based authentication and Microsoft Entra ID integrations.

  • Ability to administer and perform basic configuration of network switches.

  • Experience conducting vulnerability assessments and analyzing results using Nessus.

  • Strong troubleshooting and diagnostic skills related to network communications, authentication, and hybrid environments.

  • Ability to analyze system and network logs to identify, investigate, and resolve infrastructure and security issues.

  • Experience collaborating with technical teams and supporting users in complex IT environments.

  • Professional proficiency in English.

Nice to have: 

  • Palo Alto Networks certifications (PCNSA, PCNSE).

  • Microsoft certifications related to Windows Server, Azure, or Microsoft Entra ID.

  • Experience working in hybrid on-premises and cloud environments.

  • Knowledge of cybersecurity best practices and vulnerability management processes.

  • Experience with enterprise security monitoring and incident response activities.

 

We offer:

  • Participation in interesting and demanding projects.

  • Flexible working hours.

  • A great, non-corporate atmosphere.

  • Possibility to work remote or hybrid (2 days per week from the office).

  • Opportunities for development and promotion.

  • Attractive package of benefits.

We reserve the right to contact the selected candidates.

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Hybrid

Kraków, Poland

🏢 Summary: Full-time IT Administrator role responsible for building, maintaining and securing on-premise and cloud infrastructure in a hybrid environment. The position focuses on ensuring high availability of systems and administering heterogeneous environments based on Windows, Linux, macOS and cloud services (Azure, GWS, M365). The role includes monitoring, virtualization, network administration and implementation of modern IT security standards. 🗂️ Requirements: Minimum 5 years of experience as IT Administrator, Very good knowledge of Windows Server, Very good knowledge of Linux (Debian/Ubuntu), Very good knowledge of Hyper-V, Very good knowledge of Active Directory administration, Good knowledge of network administration (Firewall, VPN, SD-WAN, VLAN, QoS, iSCSI, WLAN), Experience in server hardware administration, Good knowledge of Microsoft Entra ID and/or Microsoft 365 or Google Workspace administration, Experience with CA, NPS, DHCP, DNS services, Experience with infrastructure monitoring tools (Prometheus, Grafana), Experience with backup solutions (Veeam, Synology) 📃 Skills: Windows, Linux, Debian, Ubuntu, macOS, Azure, GWS, M365, Hyper-V, ActiveDirectory, Firewall, VPN, SD-WAN, VLAN, QoS, iSCSI, WLAN, EntraID, GoogleWorkspace, CA, NPS, DHCP, DNS, Prometheus, Grafana, Veeam, Synology 🏢 Description: Poszukujemy osoby na stanowisko IT Administrator odpowiedzialnej za kompleksowy rozwój i utrzymanie infrastruktury lokalnej oraz chmurowej. Do głównych zadań na tym stanowisku należy zapewnienie niezawodności systemów informatycznych, a także administracja i monitoring zróżnicowanego środowiska opartego na systemach Windows, Linux i macOS, usługach GWS, Azure i M365 oraz infrastruktury sieciowej. Rola ta obejmuje również aktywne wdrażanie standardów i nowoczesnych narzędzi gwarantujących najwyższy poziom bezpieczeństwa IT w naszej organizacji. Miejsce pracy: Kraków, al. 29 Listopada 20 Tryb pracy: Stacjonarny, Hybrydowy (3 dni z biura, 2 dni zdalnie) Etat: Full time Rodzaj umowy: Umowa o Pracę, Umowa Zlecenie, B2B Zakres obowiązków Budowanie, rozwój i utrzymanie lokalnej oraz chmurowej infrastruktury IT Zapewnienie wysokiej dostępności systemów informatycznych, aplikacji, komponentów infrastruktury i usług Administracja, konfiguracja i monitoring heterogenicznego środowiska opartego o Windows, Linux Debian/Ubuntu, macOS oraz usługi chmurowe GWS/Azure/M365 Wdrażanie standardów, narzędzi i technologii zapewniających bezpieczeństwo IT Nasze oczekiwania Minimum 5 letnie doświadczenie na podobnym stanowisku Bardzo dobra znajomość systemów serwerowych z rodziny Windows i Linux Debian/Ubuntu Bardzo dobra znajomość środowisk wirtualizacyjnych Hyper-V Bardzo dobra znajomość Active Directory od strony administracyjnej Dobra znajomość administracji sieciami m.in. Firewall, VPN, SD-WAN, VLAN, QoS, iSCSI, WLAN Dobra znajomość administracji sprzętem serwerowym Dobra znajomość Microsoft Entra ID/365 i/lub Google Workspace od strony administracyjnej Doświadczenie w tworzeniu i administracji usługami m.in. CA, NPS, DHCP, DNS Doświadczenie w pracy z narzędziami do monitorowania infrastruktury IT np. Prometheus / Grafana Doświadczenie w rozwiązaniach backupowych np. Veeam, Synology Postawa proaktywna i kreatywność w rozwoju aktualnych rozwiązań i tworzeniu nowych Nastawienie na automatyzację i optymalizację rozwiązań Samodzielność i dobra organizacja pracy własnej Proaktywność i zaangażowanie w codzienne obowiązki Identyfikacja problemów i szukanie skutecznych długotrwałych rozwiązań Bardzo dobra komunikacja i nastawienie na współpracę Znajomość języka angielskiego na poziomie B2 Mile widziane Doświadczenie w budowaniu infrastruktury IT on-premise/hybrydowej Znajomość rozwiązań sieciowych z rodziny Cisco Meraki, TPLink Omada, Fortinet, Ubiquiti, Mikrotik Wiedza i doświadczenie z zakresu bezpieczeństwa sieci i systemów ESET PROTECT/XDR, Wazuh, Graylog Wiedza i doświadczenie z zakresu administracji bazami danych PostgreSQL Zarządzanie urządzeniami Apple Administracja Jirą i Confluence Oferujemy Środowisko oparte na wartościach i przyjazną, nieformalną atmosferę – bez nadęcia, z fajnymi ludźmi i dobrą kawą Duży wpływ na kształt pracy zespołu Budżet do wykorzystania na platformie Worksmile, która oferuje dostęp do takich benefitów jak m.in. Multisport, Allianz, Luxmed, PZU oraz wiele innych Elastyczny czas pracy Atrakcje w biurze tj. PS5 + VR2, biuro przyjazne zwierzętom, przekąski i owoce w biurze Dofinansowanie okularów korekcyjnych 800 zł (na umowie o pracę)

Technology

Port Gdańsk

Administrator/Administratorka Systemów Bezpieczeństwa

Mid

On-site

Gdansk, Poland

12,000 - 14,000 PLN

🏢 Summary: Offer for an IT Security Administrator responsible for maintaining and developing IT security systems and core infrastructure, ensuring operational continuity and regulatory compliance. The role includes managing Windows Server environments, virtualization, databases, and network devices, as well as handling incidents and participating in security audits and projects. On-call availability and collaboration with internal and external stakeholders are required. 🗂️ Requirements: Minimum 3 years experience as IT Administrator, Technical education in IT, Electronics or related field, Knowledge of TCP/IP, routing, switching, VLAN, DNS, DHCP, Experience with Windows Server and Hyper-V administration, Experience with databases and backup systems, Knowledge of IT security systems administration, Communicative English for technical documentation, Valid category B driving license, Clean criminal record statement, Availability for on-call duties 📃 Skills: WindowsServer, Hyper-V, MSSQL, Webcon, TCP/IP, Routing, Switching, VLAN, DNS, DHCP, SIEM, IDS/IPS, EDR/XDR, DLP, IAM, Fortinet, Ubiquiti, Antaira, Netgear, Backup, KSC, NIS2, RODO, ISO27001 🏢 Description: Twój zakres obowiązków Administracja, utrzymanie i rozwój systemów bezpieczeństwa IT ( m.in . firewall, IDS/IPS, SIEM, EDR/XDR, DLP, IAM) wraz z zapewnieniem ich ciągłości operacyjnej, monitoringu i diagnostyki. Zarządzanie infrastrukturą IT obejmującą systemy Windows Server, aplikacje biznesowe ( m.in . Webcon), bazy danych MSSQL, środowisko wirtualizacji Hyper-V oraz urządzenia sieciowe (Fortinet, Ubiquiti, Antaira, Netgear). Rozwiązywanie problemów technicznych związanych z funkcjonowaniem sieci i systemów oraz obsługa zgłoszeń w systemie ticketowym. Opracowywanie rekomendacji, koncepcji, projektów technicznych, specyfikacji sprzętowych oraz opisów przedmiotu zamówienia w zakresie systemów bezpieczeństwa. Udział w projektach inwestycyjnych i modernizacyjnych, audytach bezpieczeństwa (wewnętrznych i zewnętrznych) oraz procesach certyfikacyjnych, z zapewnieniem zgodności z regulacjami i normami (KSC, NIS2, RODO, ISO/IEC 27001). Współpraca z zespołami IT, SOC, dostawcami zewnętrznymi i jednostkami biznesowymi oraz udział w naradach, komisjach odbioru technicznego i komisjach przetargowych. Nasze wymagania: Wykształcenie średnie lub wyższe techniczne, preferowane kierunki: Elektronika i Telekomunikacja, Informatyka lub pokrewne. Przynajmniej 3 lat doświadczenia zawodowego na stanowisku związanym z zadaniami Administratora IT. Znajomość zagadnień sieciowych (TCP/IP, routing, switching, VLAN, DNS, DHCP, Baz danych, serwerów, wirtualizacji, backupu). Umiejętność zarządzania systemami Windows Server + Hyper-V Znajomość języka angielskiego w stopniu komunikatywnym umożliwiającym posługiwanie się dokumentacją techniczną. Czynne prawo jazdy kat. B. Złożenie oświadczenia o karalności, potwierdzającego, że Kandydat/Kandydatka: 1. nie był(a) karany(a) za przestępstwo lub przestępstwo skarbowe, 2. jego (jej) dane osobowe nie znajdują się w Krajowym Rejestrze Karnym. Gotowość do pracy w trybie dyżurów (on-call), zgodnie z potrzebami organizacji. Mile widziane: Znajomość zarządzania urządzeniami: Ubiquiti, Antaira, Netgear, Fortigate, Świadectwa lub certyfikaty z zakresu administrowania, konfiguracji i bezpieczeństwa sieci LAN, Microsoft Serwer, Webcon BPS, SQL Server, Systemów zabezpieczenia technicznego. Podstawy znajomości systemów SSWiN, CCTV, SKD, SSP. Profil poszukiwanego Kandydata/Kandydatki: Poszukujemy Kandydata/Kandydatki z doświadczeniem w administrowaniu i rozwijaniu systemów bezpieczeństwa IT, który potrafi analitycznie podchodzić do problemów, podejmować trafne decyzje oraz skutecznie działać w sytuacjach incydentalnych i pod presją czasu. Kandydat/Kandydatka powinien łączyć dobrą organizacją pracy własnej z umiejętnością pracy zespołowej oraz jasno komunikować się zarówno z odbiorcami technicznymi, jak i nietechnicznymi. Oczekujemy otwartości na zmiany, gotowości do ciągłego podnoszenia kwalifikacji oraz aktywnego rozwoju kompetencji poprzez szkolenia, warsztaty i samodzielną edukację.