Job description

Windows Server System Administrator

Join us, and power the backbone of global infrastructure!

Kraków - based opportunity with hybrid work model (6 days/month in the office)

As a Windows Server System Administrator, you will be working for our client, a global financial institution leading the modernization of its infrastructure to support critical middleware applications. You will be joining a high-performing team within the CTO Infrastructure division, contributing to large-scale migration projects. The role involves building and optimizing Windows Server environments and ensuring seamless transitions between operating system versions. This position offers the opportunity to work on enterprise-level systems that directly support essential banking services, combining technical expertise with hands-on execution in a dynamic and regulated environment.

Your main responsibilities:

• Building new Windows Server 2019 infrastructure for critical applications
• Testing and migrating systems from legacy environments to modern platforms
• Preparing and executing implementation and backout plans for migrations
• Optimizing system performance prior to production go-live
• Collaborating with application SMEs to verify middleware and MSSQL stability
• Automating routine tasks using PowerShell and third-party tools
• Maintaining up-to-date documentation on migration and rollback strategies
• Ensuring compliance with internal security and regulatory standards
• Performing end-to-end infrastructure validation and troubleshooting issues
• Supporting integration with underlying database and middleware systems

You're ideal for this role if you have:

• Strong expertise in Windows Server 2016 and 2019
• Experience with operating system migration projects in enterprise environments
• Proven ability to plan and execute system deployment and rollback activities
• Proficiency in PowerShell scripting for automation and configuration
• Experience managing MSSQL in high-availability, on-prem setups
• Strong troubleshooting skills across server and middleware layers
• Solid understanding of security controls and compliance requirements
• Ability to create technical documentation and support project delivery
• Experience collaborating with application and infrastructure teams
• A proactive mindset with attention to performance optimization
• It is a strong plus if you have: Familiarity with IBM Liberty or WebSphere Application Server
• Hands-on experience with MSSQL database administration
• Exposure to large-scale financial or regulated environments
• Experience working with closed-source or legacy third-party systems

We offer you:

ITDS Business Consultants is involved in many various, innovative and professional IT projects for international companies in the financial industry in Europe. We offer an environment for professional, ambitious, and driven people. The offer includes:

• Stable and long-term cooperation with very good conditions
• Enhance your skills and develop your expertise in the financial industry
• Work on the most strategic projects available in the market
• Define your career roadmap and develop yourself in the best and fastest possible way by delivering strategic projects for different clients of ITDS over several years
• Participate in Social Events, training, and work in an international environment
• Access to attractive Medical Package
• Access to Multisport Program
• Access to Pluralsight
• Flexible hours & remote work

Internal job number #6992

You can report violations in accordance with ITDS’s Whistleblower Procedure available here.