Senior .NET /WPF

KCS IT; Lisboa; Ibrido; EUR 60.000 - 90.000; Tempo pieno

Descrizione del lavoro

KCS IT is seeking an accomplished .NET Developer with 5+ years of experience to join our hybrid team in Lisbon. You will design and implement desktop applications using WPF, MVVM, and modern .NET technologies, delivering high-performant UIs and robust backend integration.

You’ll collaborate on complex projects across front-end and back-end layers, contribute to architectural decisions, and help migrate legacy apps to current .NET platforms. Portuguese and English proficiency are essential.

Competenze

• 5+ years of professional experience developing applications using Microsoft .NET technologies.
• Strong and recent hands‑on experience with WPF and the MVVM pattern.
• Solid expertise in C# and modern .NET Core/.NET 8+ development.
• Strong knowledge of concurrency, multithreading, and asynchronous programming (async/await) in desktop applications.
• Ability to develop high‑performance, responsive user interfaces.

Mansioni

• Design, develop, and optimize complex desktop applications using C#, WPF, XAML, and .NET 8/9, across front‑end and back‑end layers.
• Apply the MVVM architectural pattern to deliver scalable, maintainable, and testable solutions.
• Optimize application performance by improving UI rendering, preventing memory leaks, and implementing advanced asynchronous programming techniques.
• Develop reusable Custom Controls and User Controls, while managing styles, themes, and shared XAML resources.
• Collaborate with UI/UX, QA, and development teams to deliver high‑quality user experiences and robust software solutions.
• Support the modernization and migration of legacy desktop applications (WinForms, VB.NET, legacy WPF) to modern .NET and C# technologies.
• Contribute to architectural improvements, code quality initiatives, and continuous enhancement of desktop application performance and maintainability.

Conoscenze

WPF

MVVM

C#

.NET Core/.NET 8+

Concurrency

Multithreading

Async/Await

UI performance

Data Binding

Triggers

DataTemplates

ObservableCollection

SQL Server

SQL queries

REST APIs

System integrations

Git

ClickOnce

Portuguese

English

Strumenti

Git

ClickOnce

Descrizione del lavoro

We’re looking for the special, unique and amazing YOU!

@ KCS IT, we look for the ones that stands out, for those that always wants to be better and fight for it, and for those who has the same values that we do: dedication, energy, integrity, transparency, flexibility, trust, honesty, hard work, proactivity, team work.

At KCS we stand for equality and value diversity. We create a safe, diverse environment where opportunities are equal for everyone! We do not discriminate based on age, ethnicity, sexual orientation, gender, disability or any factor other than merit. All applications with skills for the position are welcome!

We are looking for an Amazing: .Net Developer @ WPF

Seniority: 4+

Type of position: Hybrid 1x at the office

The amazing you, will have:

• 5+ years of professional experience developing applications using Microsoft .NET technologies;
• Strong and recent hands‑on experience with WPF and the MVVM pattern;
• Solid expertise in C# and modern .NET Core/.NET 8+ development;
• Strong knowledge of concurrency, multithreading, and asynchronous programming (async/await) in desktop applications;
• Ability to develop high‑performance, responsive user interfaces;

------->Extensive experience with:

• Data Binding;
• Triggers;
• DataTemplates;
• ObservableCollection and reactive collections;
• Experience working with SQL Server;
• Strong understanding of database design and query optimization.
• Ability to create and optimize complex SQL queries;
• Experience developing and consuming REST APIs;
• Knowledge of system integrations and service‑oriented architectures;
• Proficiency with Git version control;
• Experience creating and managing ClickOnce deployments and installers.
• Fluent in Portuguese and English.

Responsibilities:

• Design, develop, and optimize complex desktop applications using C#, WPF, XAML, and .NET 8/9, working across both front‑end and back‑end layers;
• Apply the MVVM architectural pattern to deliver scalable, maintainable, and testable solutions.
• Optimize application performance by improving UI rendering, preventing memory leaks, and implementing advanced asynchronous programming techniques;
• Develop reusable Custom Controls and User Controls, while managing styles, themes, and shared XAML resources;
• Collaborate with UI/UX, QA, and development teams to deliver high‑quality user experiences and robust software solutions;
• Support the modernization and migration of legacy desktop applications (WinForms, VB.NET, legacy WPF) to modern .NET and C# technologies;
• Contribute to architectural improvements, code quality initiatives, and continuous enhancement of desktop application performance and maintainability.

Nice to have:

• Experience writing unit tests for ViewModels and contributing to Code Reviews;
• Exposure to Microsoft Azure and Azure DevOps;
• Experience with CI/CD pipelines and software release automation;
• Knowledge of Web Development, particularly;
• Razor Pages.

Why should you become part of our family?

• You can develop a career that fits you: your career development is personalized, taking in consideration your needs and goals from a short to long term
• Interesting Challenges Ahead: you can work for several clients from different sectors of activity
• Free training programs: Our training and certification programs in languages, tech, behavior and business will help you to reach your full potential faster
• International projects in Benelux: you can gain international experience in Benelux and balance a new way of living with work
• Type of projects (depending on the project you might find one of this types of projects):
• In hybrid Systems: Is important to balance work with socialization, that´s why a hybrid system works for us and for you
• Full Remote projects: If you want work while you enjoy the comfort of your home
• Full Onsite projects: if you preferer the company of your colleagues!
• Take care of your well-being: Enjoy our free nutrition, psychologist, general medicine appointments and our yoga and personal training days… all remote!

Who are we?

Founded in 2008 and based in Lisbon, KCS IT is a consulting company in the field of Information Technology and Services, focused on creating value for our clients through three main areas: Consulting, Outsourcing, Innovation and Training. Our commitment to talent development is unmistakable in the recent opening of the Porto and Azores hubs, which aims to develop technology for the national and international market. Since 2018 we have been elected one of the 10 major companies in the “Index of Excellence”, an initiative that aims to reward organizations that invest most in the development and satisfaction of their employees.