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Alexey O., Full-stack Developer

Last Updated: 4 Jul 2023

• 5+ years of practical experience • Upper-Intermediate English level. • 5 years of professional experience in the Information Technologies (IT) industry. • Experience in development on the Microsoft .NET platform (C#, ASP.NET MVC, ASP.NET Web API). • Skilled in Full-stack development. • Experience with Blockchain Smart contracts development. • Experience in developing database architecture. • Experience with writing unit tests.

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ASP.NET Core Framework

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Oleksandr K., Full-Stack .NET Software Engineer

Lviv, Ukraine
Last Updated: 4 Jul 2023
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- Full-stack web developer with more than 8 years of commercial experience. - Has worked on a wide range of projects, including financial remittance systems, medical appointment websites, and payment systems for electronic document exchange services. - Has experience working with a range of technologies including ASP.NET Core, .NET Core, EF Core, TypeScript, Node.js, Microservices, Kafka, Azure, AWS, Angular, Vue.js, and WPF. - Strong bug-fixing skills and experience with DevOps responsibilities. - Upper-Intermediate English

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ASP.NET Core Framework

ASP.NET Core Framework





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Elvin J., Team Lead/.NET Engineer

Last Updated: 4 Aug 2023

- 10+ years of commercial work experience in IT - Experience in developing applications using C# - Experience in development on the Microsoft .NET platform (C#, ASP.NET(Core) MVC, ASP.NET(Core) Web API) - Experience in developing web applications using frontend frameworks. - Refactoring of the existing applications. - Good knowledge in OOP, best practices, coding standards. - Experience in load testing, automated unit testing, configuration of CI/CD, code review. - Experience with: Database design. Solutions on the back-end from scratch. Remote working. - Team leadership or mentoring of small team - Good attention to details. - Highly motivated team player. - Upper-Intermediate English - Availability starting from ASAP

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Nikita S., Junior .NET Full Stack Engineer

Last Updated: 4 Jul 2023

- Strong knowledge and experience in object-oriented programming OOP. - Experience in developing of applications using WPF, WinForms, ASP.NET Core, and Angular. - xUnit testing is used for test cases. - Extensively worked with Version Control systems like GIT. - Experience of work with the NuGet Package Manager. Uploaded my own package. - Knowledge of SQL Server and SQL - Postman to test the API. - Development of websites using JS, TS, and CSS - A little experience in deploying containers in azure. - Pre-Intermediate English. - Available: ASAP

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ASP.NET Core Framework

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Nataliia M., MS Dynamics 365 Engineer

Lviv, Ukraine
Last Updated: 4 Jul 2023

- Strong design and integration problem-solving skills. - Expert in C#, .NET, and SQL with database analysis and design. - Skilled in developing design, installation, testing, and maintenance of software systems. - Skilled in ASP.NET Core, and client-side web development. - Upper-Intermediate English. - Available in 2 weeks after approval for a project

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ASP.NET Core Framework

ASP.NET Core Framework

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FAQs about ASP.NET Core Framework Development

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Our journey starts with a 30-minute discovery call to explore your project challenges, technical needs, and team diversity. Meet Carefully Matched ASP.NET Core Framework Talents. Within 1-3 days, we’ll share profiles and connect you with the right talents for your project. Schedule a call to meet engineers in person. Validate Your Choice. Bring a new ASP.NET Core Framework developer on board with a trial period to confirm that you’ve hired the right one. There are no termination fees or hidden costs.

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Upstaff Managers conduct an introductory round with potential candidates to assess their soft skills. Additionally, the talent’s hard skills are evaluated through testing or verification by a qualified developer during a technical interview. The Upstaff Staffing Platform stores data on past and present ASP.NET Core Framework candidates. Upstaff managers also assess talent and facilitate rapid work and scalability, offering clients valuable insights into their talent pipeline. Additionally, we have a matching system within the platform that operates in real-time, facilitating efficient pairing of candidates with suitable positions.

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Table of Contents

What are top ASP.NET Core Framework instruments and tools?

  • Visual Studio: Visual Studio is an integrated development environment (IDE) created by Microsoft. It provides a comprehensive set of tools for building, testing, and deploying applications. Visual Studio has been a popular choice among ASP.NET developers since its inception in 1997, and it continues to evolve with new features and improvements.
  • Entity Framework Core: Entity Framework Core is an object-relational mapping (ORM) framework that allows developers to work with databases using .NET objects. It provides a high-level API for performing CRUD operations, querying data, and managing database schemas. Entity Framework Core was first released in 2016 and has gained significant adoption in the ASP.NET Core community.
  • Swagger: Swagger is an open-source tool that helps developers design, build, document, and consume RESTful web services. It provides a user-friendly interface for exploring and testing APIs, as well as generating interactive API documentation. Swagger was initially developed by Tony Tam in 2011 and has become a popular choice for API development in the ASP.NET Core ecosystem.
  • Docker: Docker is a platform that allows developers to package applications and their dependencies into lightweight, portable containers. It provides an efficient way to distribute and run applications across different environments, ensuring consistent behavior regardless of the underlying infrastructure. Docker was first released in 2013 and has gained widespread adoption in the software development industry.
  • SignalR: SignalR is a real-time web framework for building interactive applications. It enables bi-directional communication between the server and client, allowing developers to push updates to connected clients in real-time. SignalR was first introduced in 2011 and has since become a popular choice for building chat applications, real-time dashboards, and collaborative tools in the ASP.NET Core ecosystem.
  • Serilog: Serilog is a flexible and extensible logging framework for .NET applications. It provides a simple API for logging structured events, making it easier to analyze and troubleshoot application behavior. Serilog supports various sinks for storing log data, including file systems, databases, and third-party services. It was first released in 2013 and has gained popularity for its simplicity and configurability.
  • AutoMapper: AutoMapper is a library that simplifies the mapping between objects of different types. It eliminates the need for manual mapping code and reduces boilerplate code in ASP.NET applications. AutoMapper was first released in 2008 and has since become a widely used tool in the ASP.NET Core community.
  • Hangfire: Hangfire is a library that allows developers to perform background processing tasks in ASP.NET Core applications. It provides a simple API for scheduling and executing recurring or delayed jobs, making it easier to offload time-consuming tasks from the main application thread. Hangfire was first introduced in 2013 and has gained popularity for its simplicity and reliability.
  • FluentValidation: FluentValidation is a popular library for implementing validation rules in ASP.NET Core applications. It provides a fluent API for defining validation rules and validating objects based on those rules. FluentValidation was first released in 2009 and has gained widespread adoption in the ASP.NET Core community.

Soft skills of a ASP.NET Core Framework Developer

Soft skills are essential for ASP.NET Core Framework Developers as they work collaboratively with teams, communicate with clients, and contribute to the overall success of the projects. Here are the key soft skills required at different levels of expertise:


  • Problem-solving: Ability to analyze and solve programming challenges using logical thinking and troubleshooting skills.
  • Adaptability: Willingness to learn new technologies, frameworks, and programming languages to stay updated in the rapidly evolving field of ASP.NET Core development.
  • Teamwork: Capability to work effectively in a team environment, collaborate with colleagues, and contribute to collective goals.
  • Communication: Strong verbal and written communication skills to effectively convey ideas, discuss technical concepts, and provide updates to team members and clients.
  • Attention to Detail: Ability to pay close attention to details, follow coding standards, and ensure the quality and accuracy of code.


  • Leadership: Demonstrated leadership skills to guide and mentor junior developers, provide technical guidance, and make informed decisions.
  • Time Management: Effective time management skills to meet project deadlines, prioritize tasks, and manage multiple assignments simultaneously.
  • Critical Thinking: Strong critical thinking abilities to analyze complex issues, identify potential risks, and propose innovative solutions.
  • Collaboration: Proven ability to collaborate with cross-functional teams, including designers, testers, and project managers, to ensure smooth project execution.
  • Client Management: Experience in effectively managing client expectations, understanding their requirements, and providing regular project updates.
  • Conflict Resolution: Proficiency in resolving conflicts within the team, addressing differences of opinions, and promoting a positive work environment.
  • Proactive Approach: Willingness to take initiative, identify areas for improvement, and suggest enhancements to existing processes and workflows.


  • Strategic Thinking: Ability to think strategically and align technical decisions with the overall business objectives and long-term project goals.
  • Project Management: Proficiency in project management methodologies, including Agile and Scrum, to effectively plan, execute, and deliver projects.
  • Mentorship: Strong mentoring skills to guide and support junior and middle-level developers, share knowledge, and contribute to their professional growth.
  • Client Relationship Management: Experience in building and maintaining strong relationships with clients, understanding their business needs, and providing customized solutions.
  • Decision Making: Demonstrated ability to make informed decisions, considering technical feasibility, project constraints, and business impact.
  • Innovation: Proven track record of introducing innovative ideas, exploring new technologies, and driving continuous improvement within the development process.
  • Quality Assurance: Strong focus on quality assurance, including code reviews, testing strategies, and adherence to industry best practices.
  • Effective Communication: Excellent communication skills to effectively convey complex technical concepts to both technical and non-technical stakeholders.

Expert/Team Lead

  • Strategic Leadership: Ability to provide strategic direction, set goals, and lead a team of developers towards successful project outcomes.
  • Technical Expertise: Deep understanding and expertise in ASP.NET Core Framework, along with knowledge of related technologies and frameworks.
  • Team Management: Proven experience in managing a team of developers, assigning tasks, monitoring progress, and ensuring high-quality deliverables.
  • Client Engagement: Strong ability to engage with clients, understand their business requirements, and provide technical guidance and solutions.
  • Conflict Resolution: Expertise in resolving complex conflicts and managing challenging situations within the team or with clients.
  • Continuous Learning: Commitment to continuous learning and staying updated with the latest trends and advancements in ASP.NET Core development.
  • Strategic Decision Making: Ability to make strategic decisions that align with business goals, technical feasibility, and market trends.
  • Process Optimization: Experience in optimizing development processes, enhancing efficiency, and implementing best practices.
  • Risk Management: Proficient in identifying and managing project risks, implementing risk mitigation strategies, and ensuring project success.
  • Effective Communication: Excellent communication skills to effectively communicate with stakeholders at all levels, including clients, management, and team members.
  • Collaboration with Stakeholders: Proven ability to collaborate with stakeholders, including product owners, business analysts, and UX designers, to ensure successful project outcomes.

TOP 13 Facts about ASP.NET Core Framework

  • ASP.NET Core is an open-source web framework developed by Microsoft that allows developers to build modern, cross-platform web applications.
  • It was first released in 2016 and is a complete rewrite of the original ASP.NET framework.
  • ASP.NET Core is built on the .NET Core runtime, which provides improved performance, scalability, and flexibility compared to the traditional .NET Framework.
  • It supports multiple development models, including MVC (Model-View-Controller) for building web applications and Web API for creating RESTful services.
  • ASP.NET Core allows developers to build applications that can run on Windows, macOS, and Linux operating systems.
  • It provides built-in support for dependency injection, which helps improve code maintainability and testability.
  • ASP.NET Core includes a lightweight, high-performance web server called Kestrel, which can be used as a standalone server or behind a reverse proxy like Nginx or IIS.
  • It offers a modular and extensible architecture, allowing developers to choose and include only the necessary components for their applications.
  • ASP.NET Core supports a wide range of data access options, including Entity Framework Core for object-relational mapping and connecting to databases.
  • It includes built-in support for modern web development features like WebSockets, SignalR for real-time communication, and middleware for handling authentication and authorization.
  • ASP.NET Core is designed with performance in mind and provides features like response caching, content compression, and async/await support to optimize application performance.
  • It has a rich ecosystem of third-party libraries and extensions, making it easy to integrate with popular front-end frameworks like React, Angular, and Vue.js.
  • ASP.NET Core is backed by Microsoft and has a strong community support, with regular updates, bug fixes, and security patches being released.

Let’s consider Difference between Junior, Middle, Senior, Expert/Team Lead developer roles.

Seniority NameYears of experienceResponsibilities and activitiesAverage salary (USD/year)
Junior0-2 years– Assisting senior developers in completing tasks
– Bug fixing and code maintenance
– Learning and implementing new technologies
– Collaborating with the team on development projects
$50,000 – $70,000
Middle2-5 years– Developing new features and functionalities
– Participating in code reviews and providing feedback
– Mentoring junior developers
– Collaborating with cross-functional teams
– Conducting system analysis and troubleshooting
$70,000 – $90,000
Senior5-8 years– Leading and managing development projects
– Designing and architecting software solutions
– Mentoring and guiding junior and middle developers
– Collaborating with stakeholders to define project requirements
– Conducting performance optimization and code refactoring
$90,000 – $120,000
Expert/Team Lead8+ years– Leading a team of developers
– Setting technical direction and making strategic decisions
– Collaborating with other teams and departments
– Conducting code reviews and ensuring code quality
– Providing guidance and mentoring to team members
– Identifying and implementing best practices and process improvements
$120,000 – $150,000+

How and where is ASP.NET Core Framework used?

Case NameCase Description
1. E-commerce WebsitesASP.NET Core is widely used in the development of e-commerce websites. Its high performance and scalability make it ideal for handling large volumes of online transactions. With features like caching, load balancing, and support for multiple databases, ASP.NET Core ensures a smooth shopping experience for customers.
2. Content Management Systems (CMS)ASP.NET Core provides a robust framework for building content management systems. It offers flexible data modeling, rich editing capabilities, and seamless integration with various front-end technologies. CMS built with ASP.NET Core can handle complex content structures, user permissions, and workflow management efficiently.
3. Real-time Communication ApplicationsASP.NET Core’s SignalR library enables the development of real-time communication applications. Whether it’s a chat application, collaborative editing tool, or live streaming platform, SignalR provides a reliable and scalable solution for bi-directional communication between clients and servers.
4. Internet of Things (IoT) PlatformsASP.NET Core is well-suited for building IoT platforms due to its support for cross-platform development and cloud integration. Developers can leverage ASP.NET Core’s lightweight runtime and modular architecture to create scalable and secure IoT solutions that connect and manage a wide range of devices and sensors.
5. Enterprise Web ApplicationsASP.NET Core is widely adopted by enterprises for developing complex web applications. Its modular architecture allows for easy integration with existing enterprise systems, such as CRM, ERP, and authentication services. ASP.NET Core’s performance optimizations and caching mechanisms ensure high scalability and responsiveness.
6. API DevelopmentASP.NET Core excels at building robust and scalable APIs. It provides a comprehensive set of tools and libraries for creating RESTful services, including support for authentication, versioning, documentation, and performance monitoring. ASP.NET Core’s built-in JSON serialization and deserialization capabilities make it an excellent choice for building API-centric applications.
7. Single Page Applications (SPA)ASP.NET Core, combined with front-end frameworks like Angular or React, enables the development of powerful single page applications. The framework’s client-side rendering capabilities, coupled with server-side APIs, provide a seamless user experience and efficient data handling. ASP.NET Core’s support for progressive web applications (PWA) enhances offline capabilities and performance.
8. Microservices ArchitectureASP.NET Core’s lightweight and modular architecture makes it a perfect fit for microservices-based applications. Developers can leverage its containerization support, service discovery mechanisms, and distributed caching to build scalable and independent microservices. ASP.NET Core’s built-in health checks and monitoring capabilities ensure the overall system’s reliability.
9. Cross-Platform Desktop ApplicationsASP.NET Core, together with frameworks like Electron or Avalonia, allows developers to create cross-platform desktop applications. With a single codebase, developers can target Windows, macOS, and Linux platforms, reducing development time and effort. ASP.NET Core’s performance optimizations and native integration capabilities enable the creation of feature-rich desktop applications.

Cases when ASP.NET Core Framework does not work

  1. Unsupported Operating Systems: ASP.NET Core framework does not work on older operating systems such as Windows XP or Windows Server 2003. It requires a minimum of Windows 7 or Windows Server 2008 R2 to function properly. Therefore, if you are using an unsupported operating system, you might encounter compatibility issues with ASP.NET Core.
  2. Outdated .NET Core Runtime: ASP.NET Core framework relies on the .NET Core runtime, and if you have an outdated version installed on your system, it may cause compatibility problems. It is essential to ensure that you have the latest version of the .NET Core runtime installed to avoid any issues while working with ASP.NET Core.
  3. Conflicting Dependencies: ASP.NET Core utilizes various third-party libraries and dependencies. In some cases, conflicts may arise when multiple dependencies have incompatible versions. This can result in runtime errors, making the framework unable to function correctly. It is crucial to manage dependencies carefully and resolve any conflicts that may arise.
  4. Unsupported Database Providers: ASP.NET Core includes support for various database providers, such as SQL Server, MySQL, and PostgreSQL. However, there may be instances where a specific database provider is not supported by the framework. In such cases, you may encounter issues when trying to connect to or interact with the database using ASP.NET Core.
  5. Hardware Limitations: Although ASP.NET Core is designed to be lightweight and efficient, there may be scenarios where hardware limitations hinder its performance. For example, if you are running ASP.NET Core on a system with insufficient memory or processing power, you may experience performance degradation or unexpected errors.
  6. Networking and Firewall Restrictions: ASP.NET Core applications often rely on network connectivity to communicate with external services or APIs. If your network environment has restrictive firewall settings or imposes limitations on outbound connections, it may impede the functionality of ASP.NET Core applications that rely on external resources.
  7. Configuration Errors: ASP.NET Core heavily relies on configuration files to define various settings for the application. If there are errors or inconsistencies in the configuration files, it can lead to unexpected behavior or application failure. Ensuring the correctness of configuration settings is crucial for the proper functioning of ASP.NET Core.
  8. Insufficient Documentation or Community Support: Although ASP.NET Core has gained significant popularity and has a large community of developers, there may be edge cases or specific scenarios where the available documentation or community support is insufficient. This can make troubleshooting and resolving issues more challenging, particularly for less common use cases.

Pros & cons of ASP.NET Core Framework

8 Pros of ASP.NET Core Framework

  • 1. Cross-platform compatibility: ASP.NET Core is a cross-platform framework, which means that it can run on different operating systems such as Windows, macOS, and Linux. This allows developers to build applications that can be deployed on various platforms without the need for major code changes.
  • 2. High performance: ASP.NET Core is designed to deliver high-performance web applications. It introduces features like a new lightweight request pipeline, improved caching mechanisms, and support for asynchronous programming, which help improve the overall performance and responsiveness of applications.
  • 3. Scalability: ASP.NET Core provides excellent scalability options for applications. It supports distributed caching, load balancing, and asynchronous programming, making it easier to handle increased user traffic and scale applications as needed.
  • 4. Modular and flexible architecture: ASP.NET Core follows a modular and flexible architecture, allowing developers to choose and include only the components they need for their application. This helps in reducing the application’s footprint and improving performance.
  • 5. Open-source and community-driven: ASP.NET Core is an open-source framework that is actively maintained and supported by Microsoft and a large community of developers. This means that developers have access to a vast collection of libraries, tools, and resources, making it easier to build robust and feature-rich applications.
  • 6. Built-in support for dependency injection: ASP.NET Core has built-in support for dependency injection, which helps in managing and resolving dependencies between different components of an application. This promotes code reusability, testability, and maintainability.
  • 7. Security: ASP.NET Core provides a comprehensive set of security features to protect applications from common web vulnerabilities. It includes features like request validation, data encryption, authentication, and authorization mechanisms, making it easier to build secure applications.
  • 8. Easy integration with modern client-side frameworks: ASP.NET Core seamlessly integrates with popular client-side frameworks like Angular, React, and Vue.js. This allows developers to build modern and interactive web applications by leveraging the capabilities of these frameworks.

8 Cons of ASP.NET Core Framework

  • 1. Learning curve: ASP.NET Core has a learning curve, especially for developers who are new to the framework. It introduces new concepts and patterns that may require some time to grasp.
  • 2. Limited third-party library support: While ASP.NET Core has a growing ecosystem of libraries and packages, it may still have limited support compared to its predecessor, ASP.NET Framework. Some libraries or packages that were available for ASP.NET may not have been ported to ASP.NET Core.
  • 3. Migration challenges: Migrating existing ASP.NET applications to ASP.NET Core can be a complex process, especially for large and complex applications. It may require significant code changes and modifications to adapt to the new framework.
  • 4. Lack of mature tooling: While ASP.NET Core has a rich set of development tools, some developers may find that certain tools or extensions they were accustomed to in ASP.NET Framework are not yet available or as mature in ASP.NET Core.
  • 5. Limited support for older versions of .NET Framework: ASP.NET Core is designed to work with the latest versions of .NET Core and .NET 5. It may have limited support or compatibility with older versions of the .NET Framework, which may pose challenges for applications that rely on legacy frameworks.
  • 6. Documentation and resources: As ASP.NET Core is a relatively newer framework compared to ASP.NET Framework, there may be fewer documentation and resources available. Although the community is actively contributing, developers may face challenges in finding specific solutions or examples.
  • 7. Performance trade-offs for certain features: While ASP.NET Core offers high performance, certain advanced features or functionalities may require additional configuration or customization, which may impact performance. Developers need to carefully consider the trade-offs when implementing complex features.
  • 8. Limited support for Windows-specific features: While ASP.NET Core is cross-platform, it may have limited support for certain Windows-specific features or APIs that were available in ASP.NET Framework. This may affect applications that heavily rely on these features.

TOP 10 ASP.NET Core Framework Related Technologies

  • Languages: C#

    C# is the primary language used for ASP.NET Core development. It is a modern, object-oriented programming language that offers a wide range of features and is highly efficient for building web applications. With its strong typing system and extensive libraries, C# empowers developers to write clean and maintainable code.

  • Frameworks: ASP.NET Core

    ASP.NET Core is a cross-platform, open-source framework for building web applications. It provides a solid foundation for developing high-performance and scalable software. With features like dependency injection, built-in security, and support for cloud-based deployments, ASP.NET Core streamlines the development process and enhances the overall performance of web applications.

  • Front-end Frameworks: Angular

    Angular is a popular front-end framework that works seamlessly with ASP.NET Core. It offers a powerful set of tools and features for building dynamic and interactive user interfaces. Angular’s component-based architecture, two-way data binding, and extensive library of UI components make it an excellent choice for developing modern web applications.

  • Database: Entity Framework Core

    Entity Framework Core is a lightweight and efficient object-relational mapping (ORM) framework. It simplifies database interactions by providing a high-level abstraction over the underlying data storage. With Entity Framework Core, developers can easily perform CRUD operations, manage database schemas, and handle complex data relationships in their ASP.NET Core applications.

  • Containerization: Docker

    Docker is a containerization platform that enables developers to package their applications along with all their dependencies into lightweight and portable containers. By using Docker with ASP.NET Core, developers can ensure consistent deployment across different environments and easily scale their applications without worrying about compatibility issues or system dependencies.

  • Testing: xUnit.net

    xUnit.net is a popular unit testing framework for .NET applications, including ASP.NET Core. It provides a simple and extensible way to write automated tests, allowing developers to verify the correctness of their code and catch potential bugs early in the development process. xUnit.net’s integration with ASP.NET Core makes it a powerful tool for creating robust and maintainable software.

  • Continuous Integration/Deployment: Azure DevOps

    Azure DevOps is a comprehensive set of development tools and services offered by Microsoft. It provides seamless integration with ASP.NET Core projects, enabling teams to automate build, test, and deployment processes. With features like version control, continuous integration, and release management, Azure DevOps streamlines the software development lifecycle and promotes collaboration among team members.

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