Senior .NET Desktop Developer — WPF & Enterprise Apps

Sii Polska; Katowice; On-site; PLN 130,000 - 190,000; Full time

Benefits offered by this job

Private healthcare

Profit sharing

Career development & training

Job summary

Sii Polska is seeking an experienced .NET Developer to design, develop, and maintain enterprise desktop applications using C# and .NET. You will build desktop apps with WPF, integrate with industrial systems, and contribute to architecture discussions to deliver high-quality software.

The ideal candidate has 3+ years in C#/.NET, hands-on WPF/WCF experience, and familiarity with Blazor. Polish fluency is required; English is a plus.

Qualifications

• 3+ years of experience with C# and .NET development.
• Knowledge of WPF and WCF technologies.
• Experience with Blazor is strongly preferred.
• Ability to analyze business and technical requirements and translate them into code.
• Strong problem-solving and debugging skills.
• Fluent Polish language abilities.

Responsibilities

• Design, develop, and maintain enterprise applications using C# and .NET.
• Create desktop applications and services using WPF and related Microsoft technologies.
• Integrate applications with databases, industrial systems, and external services.
• Contribute to software architecture discussions and technical design.
• Transform requirements into high-quality, efficient code.
• Troubleshoot and resolve issues in production and testing environments.

Skills

C#/.NET

WPF

WCF

Blazor

Requirements analysis

Problem solving

Polish language

Job description

Sii Polska is seeking an experienced .NET Developer to design, develop, and maintain enterprise desktop applications using C# and .NET. You will build desktop apps with WPF, integrate with industrial systems, and contribute to architecture discussions to deliver high-quality software.

The ideal candidate has 3+ years in C#/.NET, hands-on WPF/WCF experience, and familiarity with Blazor. Polish fluency is required; English is a plus.