Senior IT Infrastructure Specialist

Hybrid work: 3 days per week from the office in Gdańsk, Warsaw, or Łódź.

Responsibilities

• Lead and support infrastructure migration and upgrade initiatives across enterprise environments.
• Coordinate migration of SQL Server databases from SQL Server 2016 to SQL Server 2022 environments and clusters.
• Support upgrade, migration, and decommissioning of Windows Server environments.
• Execute and support operating system and application upgrade activities.
• Coordinate vendor-led application upgrades and releases.
• Collaborate with external vendors on planning, scheduling, testing, issue resolution, and deployment activities.
• Ensure alignment between vendor delivery plans and internal project timelines.
• Support validation, testing, and rollout of vendor-delivered solutions.
• Manage application lifecycle activities, including incident management, vulnerability remediation, patch management, monitoring, and operational support.
• Maintain operational stability across business-critical applications and infrastructure components.
• Support application modernization, replacement, and transformation initiatives.
• Participate in infrastructure and application migration projects, including SharePoint migrations, banking and compliance system migrations, and integration-related activities.
• Support security and compliance initiatives, including IIQ/SSO onboarding, service account remediation, threat modelling, and security baseline implementation.
• Coordinate and track migration, upgrade, release, and deployment activities.
• Prepare and maintain technical documentation, HLD and SDD documentation, test plans, rollout plans, and verification materials.
• Support UAT preparation, release management, and production deployments.
• Contribute to backlog reduction and continuous improvement of delivery processes.
• Support day-to-day operational activities and incident resolution.

Requirements

• Strong experience with Windows Server administration, upgrades, and migrations.
• Strong experience with SQL Server administration, database migrations, clustering, and performance tuning.
• Proven experience in application and infrastructure lifecycle management.
• Hands-on experience delivering large-scale infrastructure migration projects, including operating system and database upgrades.
• Experience providing production support in complex enterprise environments.
• Strong knowledge of incident, problem, and change management processes.
• Experience supporting banking or financial applications.
• Experience with security and compliance activities, including vulnerability remediation, patch management, and audit support.
• Experience working in integration-heavy environments, including payment, reporting, and regulatory systems.
• Strong documentation skills, including preparation of HLD, SDD, and operational documentation.
• Experience coordinating testing, release, and deployment activities.
• Strong analytical, troubleshooting, and problem-solving skills.
• Excellent communication and stakeholder management skills.
• Very good command of English, both spoken and written.

Nice to have

• Experience with Oracle, Java, Python, Power BI, or reporting solutions.
• Experience with Identity & Access Management solutions, including IIQ/SailPoint and SSO onboarding.
• Familiarity with banking systems, payment platforms, KYC solutions, and compliance applications.
• Experience supporting SharePoint migrations, file transfer platforms, and operational task automation.
• Knowledge of regulatory requirements, audit frameworks, disaster recovery, high-availability, and resilience concepts.
• Experience working within distributed delivery models and international teams.
• Experience operating in environments with high operational workload and multiple competing priorities.

Offer

• Private medical care.
• Co-financing for the sports card.
• Constant support of a dedicated consultant.
• Employee referral program.