Software Engineer (.NET / Windows Forms) I Teltonika Security

About the Role

We are looking for a Software Engineer with Windows Forms experience to join our R&D team.

You will work on Windows desktop applications used to configure, program, and update automotive security devices.

Your primary responsibility will be maintaining and modernizing existing tools, gradually migrating legacy Delphi applications to C#/.NET, and improving the overall architecture for future development.

This role combines desktop application development, hardware communication, and low-level data processing.

Responsibilities

• Develop and maintain Windows desktop applications used to configure, program, and update hardware devices.
• Modernize legacy applications by gradually migrating them to C#/.NET.
• Analyze and refactor existing code to improve maintainability and scalability.
• Develop and improve communication with hardware devices over USB, HID, Serial (COM) and similar interfaces.
• Collaborate closely with firmware, hardware, and R&D engineers to ensure reliable device programming, diagnostics, and testing.

What You'll Need

• Experience developing Windows desktop applications using Windows Forms.
• Experience with C# and .NET.
• Motivation to learn new technologies and expand your expertise.
• Based in Lithuania and willing to work from our Vilnius office (required).
• Nice to have: Experience working with legacy applications and refactoring existing code.
• Experience with device communication over USB, HID, Serial (COM, or similar interfaces.
• Understanding of low-level programming concepts, including binary data, bitwise operations, flags, and registers.
• Experience with Pascal / Delphi.
• Strong analytical skills and the ability to understand complex systems.

Resume Tip

Highlight your experience with Windows Forms, C#, and .NET, as well as your ability to learn new technologies and work with legacy applications.