Internal Apps Support Engineer (C#/SQL) - Hybrid

Inetum Polska; Warszawa; Hybrid; PLN 108,000 - 144,000; Full time

Job summary

Inetum Polska is seeking an IT professional to maintain and develop internal applications. You will retrieve source code, reproduce reported bugs, and analyze issues in C# and SQL within a structured ticketing system.

Proficiency in Polish, English, and German at least B2+ is required. You may work under either an employment contract or a B2B arrangement. Knowledge of Visual Studio and SQL Server Management Studio is a plus and can be learned on the job.

Qualifications

• Basic C# knowledge — able to read and understand C# code (or another OOP language like Java)
• Experience or willingness to do application support for a proprietary business application (learn business domain and handle tickets)
• Good communication and adequate English to understand problems and follow instructions
• Ability to use/read related tools (e.g., Visual Studio, SQL Server Management Studio) — can be learned on the job
• Applications: C#, Rest API, Angular
• DB: MS SQL Server, Informix
• Source code: SVN, Git

Responsibilities

• Maintenance and development of custom internal applications.
• Retrieving source code and reproducing reported bugs in applications.
• Analyzing issues in C# code and SQL databases.
• Documenting problem resolutions in the ticketing system.
• Escalating more complex tickets to third-line support.
• Using application documentation containing descriptions of the most common issues.
• Applying knowledge of C# and SQL to diagnose and resolve tickets.

Skills

C# basics

SQL databases

English comms

Rest API

Angular

Git

SVN

Visual Studio

SQL Server Management Studio

Tools

Visual Studio

SQL Server Management Studio

MS SQL Server

Informix

Git

SVN

Job description

Inetum Polska is seeking an IT professional to maintain and develop internal applications. You will retrieve source code, reproduce reported bugs, and analyze issues in C# and SQL within a structured ticketing system.

Proficiency in Polish, English, and German at least B2+ is required. You may work under either an employment contract or a B2B arrangement. Knowledge of Visual Studio and SQL Server Management Studio is a plus and can be learned on the job.