Senior .NET Full-Stack Engineer (WinForms/WPF)

Spyrosoft; Poland; On-site; PLN 140,000 - 200,000; Full time

Job summary

Spyrosoft is looking for an experienced Full-Stack Software Engineer in Poland to join a team responsible for HR-focused business applications. You will primarily develop desktop applications on the .NET platform (WinForms/WPF) using C# and SQL Server, with some contributions to web interfaces using JavaScript and React as needed.

You will collaborate with Product Owners and engineers in an Agile environment, write clean code, and help modernize legacy systems and migrate toward web-based

Qualifications

• Bachelor's degree in Computer Science, Software Engineering, or a related technical field is a plus.
• 4-5 years of commercial experience as a Software Engineer.
• Strong knowledge of C# and the .NET platform (.NET 4, .NET Framework, .NET Core).
• Experience in developing and maintaining desktop applications (WinForms and/or WPF).
• Good knowledge of JavaScript and web technologies (HTML, CSS).
• Experience working with React or another modern front-end framework.
• Good knowledge of SQL and relational databases (SQL Server, Azure SQL).
• Experience with Microsoft Azure or other cloud solutions.
• Experience working in Scrum/Agile environments.
• Knowledge of version control systems (Git).
• Ability to write clean, maintainable, and well-structured code.
• Strong analytical and problem-solving skills.
• Ability to communicate effectively and collaborate with both technical and business stakeholders.
• English proficiency at a minimum B1/B2 level
• Polish proficiency at a minimum B2 level

Responsibilities

• Develop and maintain desktop applications on the .NET platform (WinForms/WPF).
• Contribute to web interfaces using JavaScript and React as needed.
• Design, optimize, and maintain data models and queries in SQL Server.
• Collaborate with Product Owners and engineers in an Agile environment.
• Help modernize legacy systems and migrate solutions toward web-based approaches.
• Write clean, well-documented code and participate in code reviews.
• Contribute to technical decision-making and share knowledge within the team.

Skills

C#

.NET

WinForms/WPF

JavaScript

React

SQL

Azure

Azure DevOps

Git

Scrum/Agile

MVVM

REST API

Entity Framework

SignalR

AI awareness

English (communication)

Polish language

Education

Bachelor's degree in Computer Science / Software Engineering / related field

Tools

Azure DevOps

SQL Server

REST API

CI/CD

TypeScript

Job description

Spyrosoft is looking for an experienced Full-Stack Software Engineer in Poland to join a team responsible for HR-focused business applications. You will primarily develop desktop applications on the .NET platform (WinForms/WPF) using C# and SQL Server, with some contributions to web interfaces using JavaScript and React as needed.

You will collaborate with Product Owners and engineers in an Agile environment, write clean code, and help modernize legacy systems and migrate toward web-based