Senior System Administrator at creatio

Creatio is a global vendor of an agentic CRM & workflow platform with no-code and AI at its core. We help organizations automate customer and operational workflows, achieving the fastest time-to-value and the highest ROI on the market. Millions of workflows run on Creatio daily, supporting thousands of clients in over 100 countries. Genuine care for our clients and partners is at the heart of our DNA. We’re proud to be recognized by top industry analysts as a Leader and Strong Performer in multiple Gartner and Forrester reports.  In 2025, Creatio was named to Inc.’s Best Workplaces list, recognizing our commitment to employee well-being and a strong workplace culture. Who We're Looking For:Senior System Administrator who will be responsible for maintaining, improving, and securing the company’s IT infrastructure while also leading complex network and systems initiatives across distributed offices and remote environments. The role combines advanced system administration expertise with strong hands-on networking and infrastructure engineering skills.Location: Warsaw, Poland.Key Responsibilities:System Administration & InfrastructureAdminister and support Windows Server environments. Manage Active Directory, Group Policies, Microsoft 365, Exchange 2019, and endpoint protection solutions (ESET). Maintain enterprise IT infrastructure, including servers, virtualization, storage, and backup systems. Network Engineering & ArchitectureDesign and maintain structured multi-VLAN enterprise networks across multiple offices. Configure and support Cisco switching infrastructure, including VLANs, trunking, stacking, inter-VLAN routing, and link aggregation. Administer enterprise Wi-Fi environments (Ruckus, Aruba, Meraki, or equivalent), including 802.1X and guest/corporate segmentation. Configure and maintain Fortinet firewalls and SD-WAN environments with multi-ISP failover. Plan and execute network modernization and migration projects with minimal downtime. Maintain structured IP addressing schemes, DHCP, DNS, and TCP/IP infrastructure. Ensure secure remote access and resilient out-of-band administration. Operations & SupportProvide advanced troubleshooting and escalation support for complex infrastructure and networking issues. Prepare rollback plans and perform risk-aware infrastructure changes. Maintain accurate technical documentation, diagrams, IP plans, and operational procedures. Required Skills and Qualifications:Must-Have Technical Skills5+ years of experience in System Administration / IT Infrastructure roles. Strong expertise with Windows Server, Active Directory, Microsoft 365, Exchange, and endpoint security solutions. Experience supporting Windows and macOS environments. Advanced knowledge of enterprise networking: TCP/IP, DNS, DHCP, VLANs, routing & switching, VPNs, and SD-WAN. Hands-on experience with Cisco switches, Fortinet firewalls, and enterprise Wi-Fi solutions (Ruckus, Aruba, Meraki, or equivalent). Experience designing and supporting segmented multi-site enterprise networks. Strong troubleshooting skills across infrastructure, networking, hardware, and software layers. Understanding of network security, access control, and infrastructure best practices. Proficiency in the Ukrainian and English languages.Nice to HaveExperience with virtualization, backup systems, scripting, or automation. Relevant certifications (CCNA/CCNP, Fortinet NSE, Microsoft, ITIL). Experience with cloud or hybrid infrastructure environments.What to expect from us:          Growth & Development: Clear career paths, mentorship opportunities, and access to continuous learning to help you reach your full potential.Flexibility & Well-Being: We provide flexible work arrangements and initiatives that empower you to manage your schedule effectively, stay productive, and thrive both personally and professionally.Recognition & Impact: A culture that celebrates achievements, values your ideas, and empowers you to make real contributions from day one.Innovative Culture: Be part of a company that embraces new ideas, modern technologies, and bold thinking to stay ahead of the curve.Benefits & Rewards Package: We provide competitive compensation and benefits designed to support you and your family. Our rewards approach goes beyond salary, recognizing your contributions and commitment. The exact package may vary depending on your country of residence and employment type.