Senior Infrastructure Specialist

Salary: 800 - 950 PLN/day on B2B

Work model: hybrid from Gdynia / Gdańsk / Warszawa / Łódź (2/3 days per week from the office)

 

Why choose this offer?


  • You can expect a flexible work organization
  • The international work environment will give you the opportunity to interact with the English language on a daily basis
  • Scandinavian organizational culture will provide you with work-life balance, you will gain time for additional training (financed by Jit)
  • The Jit community will bring you a nice time during regular integration meetings

 

Project


You will be involved in a financial project focused on supporting IT team in managing high-demand workloads driven by large-scale infrastructure upgrades, application lifecycle activities, regulatory requirements, and migration initiatives. The role is critical in reducing operational risk, addressing backlog, ensuring successful delivery of 2026 migration deadlines, and coordinating closely with internal teams and external vendors.

 

Responsibilities you'll have

  • Migrate SQL Server 2016 databases to SQL Server 2022 environments and clusters
  • Upgrade, migrate, or decommission Windows Server 2016 environments
  • Support OS, application, and vendor-provided application upgrades
  • Coordinate migration, upgrade, testing, and release activities with internal teams and external vendors
  • Support application lifecycle management, incident handling, patching, vulnerability remediation, and monitoring
  • Prepare documentation, test plans, rollout checklists, UAT materials, and support release execution

 

Expected competences and knowledge

  • Strong experience with Windows Server administration and SQL Server migrations, clustering, and performance tuning
  • Proven experience in large-scale infrastructure migrations and production support in complex enterprise environments
  • Experience with incident, problem, and change management processes
  • Knowledge of security and compliance activities, including patching, vulnerability remediation, and audits
  • Strong documentation skills, including HLD, SDD, and operational procedures
  • Experience coordinating releases, testing, deployment activities, and application lifecycle management
  • Nice to have: 
    • Familiarity with banking domain systems, including payments, KYC, and compliance platforms
    • Experience with automation and scripting of operational tasks, SharePoint migrations, and file transfer solutions
    • Knowledge of regulatory frameworks, audit requirements, resilience, disaster recovery, and high-availability environments
    • Experience working in distributed delivery models and high-volume enterprise environments with competing priorities

 

Technologies you'll work with


  • Windows Server
  • Microsoft SQL Server
  • SharePoint
  • IIQ / SailPoint,
  • SSO frameworks,
  • Oracle, Java, Python, and Power BI

 

Client – why choose this particular client from the Jit portfolio?


Jit Team has had an over-decade-long relationship with the leading financial group in the Nordic countries, and we are privileged to be our client's premier partner in Poland. At present, over 200 Jit personnel are engaged in the completion of more than 60 projects for this Norwegian major provider of financial services with a global presence and a strong focus on modern technology. Our customer's work atmosphere is epitomized by the Scandinavian culture, which is conducive to people who place emphasis on work-life balance and feedback culture. Furthermore, all projects are executed in international teams, giving constant exposure to the English language. 

 

About Jit Team


The Human Factor of IT - it’s not just a slogan, it’s a philosophy. The foundation of Jit Team is people, which is why we prioritise you. We employ over 770 experienced experts, to whom we offer developmental projects, a wide range of benefits, and a proprietary professional development programme. Together with clients from around the world, we create innovative IT solutions delivered by highly specialised and efficient teams.

 

Behind our maxim are also charitable and educational activities. We support schools, universities, and educational institutions by conducting workshops, running educational projects, sponsoring events, and donating learning equipment. We offer internships that help launch careers in IT. We support water rescuers and hospitals by providing the necessary equipment. We also support numerous charitable organisations helping people in need, children, and the elderly. We are a Polish company and we share what we have achieved over more than 15 years of activity. By supporting local initiatives, we contribute to the circulation of good energy.

ID: 4714 job_post.published_on: 23/06/2026
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