L3 Support Engineer

UST; Kraków; On-site; PLN 120,000 - 180,000; Full time

Job summary

UST in Kraków is seeking a 3rd Line Support Engineer to maintain business-critical financial data platforms and ensure data integrity. The role centers on advanced incident resolution, change delivery, and ongoing system stability.

You will work closely with development, QA, infrastructure and business teams, handling complex incidents, performing root-cause analyses, and delivering permanent fixes. Out-of-hours support may be required.

Qualifications

• Experience supporting financial services applications or financial data systems.
• Advanced Excel with Pivot Tables, formulas, data analysis, macros.
• Strong VBA development for automation.
• Advanced SQL Server skills: complex queries, stored procedures, functions, performance tuning.
• Experience with large and complex datasets.
• .NET application support and troubleshooting experience.
• Strong analytical, problem-solving and troubleshooting skills.
• Ability to communicate effectively with technical and non-technical stakeholders.

Responsibilities

• Act as the escalation point for complex application, database, and data-related issues.
• Investigate incidents, perform root cause analysis, and implement permanent fixes.
• Deliver approved application and database changes following release processes.
• Support deployments, production releases, and configuration updates.
• Maintain and validate business-critical financial data, ensuring accuracy and consistency.
• Perform data analysis, reconciliation, and troubleshooting.
• Develop automation tools and process improvements to increase operational efficiency.
• Collaborate with development, QA, infrastructure, and business stakeholders.
• Provide out-of-hours support when required.

Skills

Financial data systems

Advanced Excel

VBA development

SQL Server

.NET application support

Analytical thinking

Stakeholder communication

Job description

Role Description

UST is seeking a 3rd Line Support Engineer.

The role is responsible for advanced technical support, incident resolution, change delivery, and maintenance of business-critical financial data platforms. You will work closely with development, QA, infrastructure, and business teams to ensure system stability, data integrity, and continuous service improvement.

Responsibilities

• Act as the escalation point for complex application, database, and data-related issues.
• Investigate incidents, perform root cause analysis, and implement permanent fixes.
• Deliver approved application and database changes following release processes.
• Support deployments, production releases, and configuration updates.
• Maintain and validate business-critical financial data, ensuring accuracy and consistency.
• Perform data analysis, reconciliation, and troubleshooting.
• Develop automation tools and process improvements to increase operational efficiency.
• Collaborate with development, QA, infrastructure, and business stakeholders.
• Provide out-of-hours support when required.

Required Skills

• Experience supporting financial services applications or financial data systems.
• Advanced Microsoft Excel skills (Pivot Tables, formulas, data analysis, macros).
• Strong VBA development experience for automation and tooling.
• Advanced Microsoft SQL Server skills, including: Complex SQL queries; Stored Procedures & Functions; Performance tuning; Data investigation and troubleshooting.
• Experience working with large and complex datasets.
• .NET application support and troubleshooting experience.
• Strong analytical, problem-solving, and troubleshooting skills.
• Ability to communicate effectively with both technical and non-technical stakeholders.

Preferred Qualifications

• Knowledge of ITIL Incident, Problem, and Change Management processes.
• Experience supporting business-critical or data-intensive platforms.
• Exposure to release management and production support processes.
• Experience in a client-facing support role.
• Relevant certifications such as ITIL, Microsoft SQL Server, or Azure are an advantage.

Key Technologies: .NET, Microsoft SQL Server, T-SQL, VBA, Advanced Excel, Windows Server, ITIL, Financial Data Platforms.

Skills

• NET, SQL, SQL Server