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

#GETREADY  to meet with us!

We would like to meet you. If you are interested please apply and attach your CV in English or Polish, including a statement that you agree to our processing and storing of your personal data. You can always also apply by sending us an email at recruitment@itds.pl.

Internal number #6992