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Hire C# Developers from Central Europe

Hire senior remote C# developers with strong technical and communication skills for your project

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  • Windows desktop applications:

    C# can be used to create Windows Forms and WPF (Windows Presentation Foundation) applications, which are used for creating traditional desktop applications.

  • Web development:

    C# can be used to create web applications using the ASP.NET framework, which allows developers to create dynamic web pages and web services.

  • Mobile app development:

    C# can be used to create mobile apps for the Windows and Windows Phone platforms.

  • Game development:

    C# can be used to create games using the Unity game engine, which is a popular tool for creating 2D and 3D games.

  • Enterprise software development:

    C# can be used to create enterprise-level applications, such as CRM, ERP systems using the .NET framework and various other options.

  • Data Science and Machine Learning:

    C# used with other toolkits such as TensorFlow.NET, ML.NET can be used for machine learning and data science application.

  • Internet of Things (IoT):

    C# is also used to develop IoT applications by using the .NET Core framework and various other libraries.

Top Skills to Look For in a C# Developer

  • Strong knowledge of the C# language and the .NET framework:

    A good C# developer should have a solid understanding of the C# language, including its syntax, data types, and object-oriented programming concepts. They should also have experience working with the .NET framework, which provides a wide range of libraries and tools for developing Windows-based applications.

  • Experience with Visual Studio:

    Visual Studio is a popular development environment for C# and .NET developers, so experience using this tool is important.

  • Knowledge of web development technologies:

    If the project involves web development, the developer should have experience with web development technologies such as HTML, CSS, and JavaScript, as well as web development frameworks such as ASP.NET.

  • Experience with database development:

    C# developer should have experience working with databases, including designing and querying database schemas and optimizing performance.

  • Strong debugging and problem-solving skills:

    A good C# developer should be able to troubleshoot and debug code effectively, as well as identify and resolve performance issues.

  • Knowledge of design patterns and best practices:

    A C# developer should be familiar with common design patterns and software development best practices, such as SOLID principles, which can help ensure that the code is maintainable, extensible, and testable.

  • Familiarity with Agile development and version control:

    Knowledge of Agile development methodologies and experience working with version control systems such as Git, can be beneficial for C# developer.

  • Knowledge of other languages:

    Experience with other programming languages such as Java or Python can be an asset for a C# developer as it helps with the understanding of how different languages function and might help to develop more robust and efficient systems.

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C# Interview Questions

Explain the difference between "struct" and "class" in C#

In C#, both “struct” and “class” are used to define types that can have fields, properties, and methods. The main differences are:

   – “struct” is a value type, while “class” is a reference type.

   – “struct” does not support inheritance, but “class” does.

   – “struct” is stored on the stack, while “class” instances are stored on the heap.

   – A “struct” doesn’t have a default parameterless constructor, while a “class” does.

Describe the concept of Garbage Collection in .NET.

Garbage Collection (GC) is a mechanism provided by the .NET framework to automatically reclaim memory occupied by objects that are no longer in use. The GC operates on the heap and cleans up memory, ensuring that applications don’t leak memory over time.

What is the difference between "IEnumerable" and "IQueryable"?

“IEnumerable” and “IQueryable” are both interfaces for collections. The main differences are:

   – “IEnumerable” is suitable for working with in-memory collections like arrays and lists.

   – “IQueryable” is designed for querying data from out-of-memory sources, like databases. It allows LINQ queries to be translated into SQL for execution by the database.

Explain the purpose of the "using" statement in C#

The “using” statement in C# is used for two main purposes:

   – To define a scope at the end of which an object will be disposed, particularly for objects that implement the “IDisposable” interface.

   – To alias namespaces, which can be useful to resolve namespace conflicts.

Describe how events differ from delegates

Delegates are type-safe function pointers, while events are a way of encapsulating delegates. Events use delegates behind the scenes and provide a mechanism to offer a subscription model where multiple methods can subscribe to a single event.

What is Reflection in C#?

Reflection is a feature in .NET that allows the inspection of metadata of assemblies, modules, and types at runtime. It can be used to dynamically create instances, access fields, methods, properties, and invoke them.

How do you handle exceptions in C#?

Exceptions in C# are handled using the “try”, “catch”, “finally”, and “throw” keywords. Code that might throw exceptions is placed inside a “try” block, and exceptions are caught in subsequent “catch” blocks. The “finally” block contains code that is always executed, whether an exception occurred or not.

What is the difference between "async/await" and "Task.Run"?

Both “async/await” and “Task.Run” are used for asynchronous programming in C#. The main differences are:

   – “async/await” provides a more declarative way to express asynchronous operations without explicitly managing the underlying thread.

   – “Task.Run” is used to offload work to a ThreadPool thread, suitable for CPU-bound operations.

What is Dependency Injection?

Dependency Injection (DI) is a design pattern that allows an object to receive its dependencies from outside, making systems more modular, testable, and maintainable. In .NET Core and .NET 5+, DI is integrated into the framework, allowing services to be registered and injected into classes.

Explain the "virtual", "override", and "new" keywords in the context of method overriding

   – “virtual” is used to declare a method, property, indexer, or event that can be overridden in derived classes.

   – “override” is used in a derived class to provide a new implementation for a method declared as “virtual” in a base class.

   – “new” keyword hides the method from the base class, making it unrelated to the base class’s method of the same name.

What's the difference between early binding and late binding?

Early binding refers to compile-time binding, where the method or property of an object is resolved at compile time. Late binding, on the other hand, occurs at runtime, typically using Reflection, and is useful when the type of the object isn’t known at compile time.

Describe the "volatile" keyword in C#

The “volatile” keyword indicates that a field can be modified by multiple threads simultaneously. It ensures that the most up-to-date value is present in the field at all times, preventing the compiler or the processor from caching the value for optimization purposes.

How does the "lock" keyword ensure thread safety in C#?

The “lock” keyword ensures that only one thread can enter a specific block of code at a time, preventing race conditions and ensuring thread safety. It’s used to synchronize access to a section of code that accesses shared data.

What is LINQ in C#?

LINQ (Language Integrated Query) is a feature in C# that allows querying data directly within the language, irrespective of the data source. It provides a consistent model for working with data across various kinds of data sources and formats.

What are Attributes in C#?

Attributes in C# provide a way to add metadata or declarative information to assemblies, modules, types, or members without using keywords. Attributes are classes that derive from the “System.Attribute” class. They can be retrieved at runtime using Reflection.