IT specialist for enterprise applications

We are looking for an enthusiastic IT Senior Specialist who will support an enterprise environment with Windows workstations and a wide range of business applications used across different departments. He/She will investigate complex technical incidents, trace problems across endpoints, networks, identity services, applications, and backend dependencies, and resolve issues within his/her responsibility.

• Analyze and resolve complex Windows, desktop application, web application, and network connectivity issues affecting employee productivity
• Investigate application slowness, crashes, failed transactions, intermittent errors, authentication failures, and service accessibility problems
• Establish incident scope and business impact; reproduce symptoms and isolate the affected technical layer through structured testing
• Examine Windows event logs, application logs, resource utilization, network connections, and browser diagnostics to develop and test troubleshooting hypotheses
• Understand business application dependencies and communication flows, including DNS, proxies, identity providers, APIs, application servers, and databases
• Distinguish device-specific problems from shared service failures by comparing affected and unaffected users, workstations, locations, and application behavior
• Prepare actionable escalations with timestamps, reproduction steps, error codes, relevant logs, diagnostic results, and a clear explanation of findings and actions already taken
• Coordinate with infrastructure, network, security, database, application, and development teams; retain ownership of communication and follow-up through resolution
• Install, configure, and deploy Windows operating systems and business applications using standardized images, packages, and endpoint management tools
• Automate OS and application installation, configuration, updates, and routine daily support tasks using PowerShell and approved deployment tools
• Review endpoint health and recurring incidents; contribute to root cause analysis and improve knowledge articles, support procedures, and preventive measures

• At least 3 years of hands-on experience supporting users and business applications in an enterprise IT environment
• A systematic, evidence-based approach to troubleshooting, with the ability to investigate issues spanning multiple systems and technical teams
• Strong Windows knowledge covering services, processes, event logs, user profiles, permissions, Group Policy, drivers, software dependencies, and performance analysis
• Fundamental networking knowledge covering TCP/IP, DNS, DHCP, ports, VLANs, Wi-Fi, VPNs, proxies, and firewalls; ability to interpret connectivity test results
• Practical desktop application troubleshooting skills covering installation, configuration, runtime dependencies, compatibility, crashes, and client-server performance
• Understanding of web application request flows, HTTP and HTTPS, status codes, TLS certificates, authentication and authorization
• Understanding of Active Directory, domain authentication, SSO, MFA, and access permissions, including the distinction between authentication and authorization failures
• Experience with enterprise ticketing, remote support, endpoint management, and diagnostic tools; basic PowerShell skills for information collection and routine automation
• Ability to communicate findings precisely in technical language to specialist teams and explain business impact and progress clearly to employees
• Strong incident ownership, documentation skills, prioritization, and sound judgment when handling production systems, access, and sensitive diagnostic data
• Будет плюсом: Experience with Windows Performance Monitor, Sysinternals, browser developer tools, Wireshark, and centralized logging platforms; Familiarity with Microsoft Intune, Configuration Manager, or equivalent endpoint management platforms; Experience supporting business-critical applications across multiple departments and contributing to incident, problem, and change management; Relevant Microsoft, networking, or ITIL certifications

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