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Yurii B., Solution Architect /.NET Software Engineer/Team Lead

Lviv, Ukraine
Last Updated: 4 Jul 2023

- A Software Engineer with over 10 years of development experience in the IT industry; - Most of experience is related to the .NET platform and C# language, on both client and server-side development; - Solid experience working with cross-application integrations, Web API, and WCF Services; - Well-versed in release management on IIS and Azure; - Strong knowledge of SQL; - Experience in working with Dynamics 365 and Salesforce CRMs; - Advanced English;

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Alexander M., .NET Engineer

Kyiv, Ukraine
Last Updated: 4 Jul 2023

- A Software Engineer with over 10 years of development experience in the IT industry. - Most of his experience is related to the .NET platform and C# language, both in client and server-side development. Solid experience working with cross-application integrations. Results-driven, logical and methodical approach to achieving tasks and objectives; determined and decisive; uses initiative to develop effective solutions to problems; reliable, dependable - high personal standards and attention to detail; responsible; quick learner, energetic, and organized. - Intermediate English - Available in two to three weeks

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Yurii K., .NET Software Engineer

Lviv, Ukraine
Last Updated: 4 Jul 2023

- .NET Software Engineer with 4 years of software development experience in different domains (FinTech, Real Estate, E-Commerce). - The biggest part of the experience is related to the .NET platform - Upper-Intermediate English - Available from 11.07.2022

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Artem V., .NET Software Engineer

Budva, Montenegro
Last Updated: 4 Jul 2023

- Over 10 years of professional expertise in the Information Technologies (IT) industry - Experience in the design and implementation of web applications - Rich experience in web development - Upper-Intermediate English - Available from 15.07.2022

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Oleksandr D, .NET Lead Engineer

Lviv, Ukraine
Last Updated: 4 Jul 2023

- 15+ years experience as .NET Lead Engineer. - He has experience in the successful development of products and the management of teams and companies. His core proficiency in programming languages: .Net, C#, JS, and T-SQL. Has a lot experience of with frameworks and libraries including SiteCore, .NET, EF Web, Mobile, Desktop System architecture, analytics, optimization, and DevOps. - Upper-Intermediate English. - Start ASAP

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ASP.NET   15 yr.


C#   15 yr.


T-SQL   15 yr.

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Table of Contents

Pros & cons of .Net WCF

8 Pros of .Net WCF

  • 1. Interoperability: .Net WCF provides support for various protocols and standards, making it easier to communicate and integrate with different systems and platforms.
  • 2. Service-oriented architecture: WCF allows developers to build applications using a service-oriented architecture (SOA) approach, which promotes modular and scalable design.
  • 3. Security: WCF offers robust security features, including authentication, authorization, and message encryption, ensuring the protection of sensitive data during communication.
  • 4. Flexibility: With WCF, developers have the flexibility to choose from various hosting options, such as self-hosting, IIS hosting, and Windows Service hosting, based on the specific requirements of their application.
  • 5. Extensibility: WCF allows for easy extension and customization through the use of behaviors, enabling developers to add additional functionality without modifying the core framework.
  • 6. Reliable messaging: WCF provides reliable messaging capabilities, ensuring the delivery of messages even in the presence of network failures or interruptions.
  • 7. Scalability: WCF supports scalability by allowing applications to handle a large number of concurrent requests, thanks to its support for threading and asynchronous programming.
  • 8. Tooling and ecosystem: .Net WCF is supported by a rich set of development tools and has a strong ecosystem with a vast community of developers, making it easier to find resources, libraries, and support.

8 Cons of .Net WCF

  • 1. Complexity: WCF can be complex to configure and understand, especially for developers who are new to the framework. It requires a steep learning curve to master all its features and concepts.
  • 2. Performance overhead: Due to its extensibility and flexibility, WCF can introduce some performance overhead compared to simpler communication frameworks. It is crucial to optimize the configuration and design to minimize this overhead.
  • 3. Versioning challenges: When making changes to WCF services, versioning can become a challenge, especially when dealing with clients using different versions of the service contracts. Proper versioning strategies need to be implemented to ensure compatibility and smooth transitions.
  • 4. Debugging complexity: Debugging WCF services can be more challenging compared to traditional applications, as it involves communication between multiple components and can require additional setup and configuration.
  • 5. Steeper learning curve: WCF requires a solid understanding of distributed systems concepts and technologies, which might require additional time and effort for developers who are not familiar with these concepts.
  • 6. Limited platform support: While WCF is primarily designed for the Windows platform, it has limited support for other platforms such as Linux and macOS. This can limit its usage in cross-platform scenarios.
  • 7. Maintenance and support: As technology evolves, there might be a decrease in official support and updates for WCF, which can pose challenges for long-term maintenance and compatibility with newer frameworks and platforms.
  • 8. Deployment complexity: Deploying WCF services can be more complex compared to standalone applications, as it involves configuring various components, such as endpoints, bindings, and security settings.

Soft skills of a .Net WCF Developer

Soft skills are essential for a .Net WCF Developer to effectively collaborate, communicate, and excel in their role. Here are the key soft skills required at different levels of experience:


  • Problem-solving: Ability to analyze and resolve issues in WCF development.
  • Attention to detail: Paying close attention to code quality and ensuring accuracy.
  • Time management: Efficiently managing tasks and meeting deadlines.
  • Teamwork: Collaborating with other developers and stakeholders.
  • Effective communication: Clearly explaining technical concepts to non-technical team members.


  • Adaptability: Being flexible and able to adjust to changing project requirements.
  • Leadership: Taking initiative and guiding junior developers when needed.
  • Client interaction: Communicating with clients to understand their requirements and provide updates.
  • Mentoring: Assisting junior developers and sharing knowledge.
  • Problem-solving: Analyzing complex issues and finding innovative solutions.
  • Critical thinking: Evaluating different approaches and making informed decisions.
  • Collaboration: Working effectively in a team environment.


  • Project management: Overseeing the development process and ensuring successful project delivery.
  • Strategic thinking: Identifying long-term goals and aligning development efforts accordingly.
  • Decision-making: Making informed decisions that impact project outcomes.
  • Conflict resolution: Resolving conflicts and promoting a positive work environment.
  • Client management: Building strong relationships with clients and understanding their business needs.
  • Innovation: Identifying opportunities for improvement and implementing new ideas.
  • Presentation skills: Effectively communicating complex technical concepts to diverse audiences.
  • Empathy: Understanding and considering the perspectives of team members and stakeholders.

Expert/Team Lead

  • Strategic planning: Developing long-term strategies for the development team.
  • Team management: Leading and motivating a team of developers.
  • Negotiation: Negotiating project requirements and timelines with clients.
  • Technical mentorship: Guiding and mentoring junior and middle-level developers.
  • Business acumen: Understanding the business context and aligning development efforts accordingly.
  • Influence: Persuading stakeholders and gaining buy-in for technical decisions.
  • Continuous learning: Staying updated with the latest advancements in .Net and WCF technologies.
  • Quality assurance: Ensuring code quality and adherence to best practices.
  • Risk management: Identifying and mitigating risks associated with development projects.
  • Collaboration: Facilitating effective collaboration between different teams.
  • Communication: Articulating the team’s progress and accomplishments to higher management.

How and where is .Net WCF used?

Case NameCase Description
Case 1: Enterprise Application IntegrationWCF can be used to integrate different applications within an enterprise. It provides a unified platform for communication between various systems, allowing them to exchange data and services seamlessly. This enables businesses to streamline their processes and improve efficiency.
Case 2: Service-Oriented Architecture (SOA)WCF is well-suited for implementing a service-oriented architecture. It allows organizations to expose their business functionality as services, which can be consumed by different clients across different platforms. This promotes reusability, interoperability, and scalability.
Case 3: Message QueuingWCF supports reliable message queuing, which is beneficial in scenarios where messages need to be persisted and processed asynchronously. It ensures reliable message delivery, even in the presence of failures, and provides a scalable solution for handling high message volumes.
Case 4: Cross-Platform CommunicationWith the support for various transport protocols and message formats, WCF enables communication between applications running on different platforms and technologies. It allows seamless interaction between Windows-based systems, web applications, and even non-Microsoft platforms.
Case 5: Real-Time Data StreamingWCF can be used to build real-time data streaming applications, such as stock market tickers or live monitoring systems. With its duplex communication model, WCF enables bi-directional communication between the server and clients, facilitating real-time updates and notifications.
Case 6: Cloud IntegrationWCF can be utilized for integrating on-premises applications with cloud-based services. It provides a secure and reliable communication channel for accessing cloud resources, enabling organizations to leverage the scalability and flexibility offered by cloud computing.

Cases when .Net WCF does not work

  1. Unsupported Platforms: .Net WCF does not work on non-Windows platforms. It is specifically designed for the Windows operating system and relies on Windows Communication Foundation technology. If you are using a different operating system like Linux or macOS, you will not be able to use .Net WCF.
  2. Compatibility Issues: .Net WCF may not work if you are using older versions of the .Net Framework. It is important to ensure that you have the appropriate version of the .Net Framework installed on your system to work with .Net WCF.
  3. Firewall Restrictions: If your network has strict firewall policies, it may block the communication channels required by .Net WCF. In such cases, you may need to configure your firewall settings to allow the necessary traffic for .Net WCF to function properly.
  4. Network Connectivity Problems: .Net WCF relies on network connectivity to establish communication between the client and the server. If there are network issues such as intermittent connectivity, high latency, or packet loss, it can cause .Net WCF to fail or perform poorly.
  5. Security Configuration: .Net WCF has various security features and settings that need to be configured correctly for it to work. If the security configuration is not set up properly, it can prevent .Net WCF from functioning as expected.
  6. Concurrency Limitations: .Net WCF has default concurrency settings that limit the number of concurrent requests it can handle. If your application requires high concurrency and you do not adjust these settings accordingly, it can result in performance issues or failure of .Net WCF.
  7. Endpoint Configuration Issues: .Net WCF relies on endpoint configurations to define the communication channels and protocols. If the endpoint configurations are not properly set up or are misconfigured, it can cause .Net WCF to fail.
  8. Network Load Balancing: If you are using network load balancing techniques such as round-robin or DNS-based load balancing, it can introduce complications for .Net WCF. Load balancing can disrupt the session management and message sequencing required by .Net WCF, leading to inconsistencies or failures.
  9. Deployment and Hosting Problems: Improper deployment or hosting of .Net WCF services can also cause issues. If the necessary files, dependencies, or configurations are missing or not set up correctly, .Net WCF may not work as expected.
  10. Third-Party Integration Limitations: When integrating .Net WCF with third-party components or services, compatibility issues or limitations of those components can impact the functionality of .Net WCF.

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

Seniority NameYears of experienceResponsibilities and activitiesAverage salary (USD/year)
Junior Developer0-2 years– Assisting senior developers in coding and testing
– Participating in code reviews and bug fixing
– Developing basic software features under supervision
$50,000 – $70,000
Middle Developer2-5 years– Collaborating with team members to design and implement software solutions
– Developing and maintaining software modules independently
– Conducting code reviews and ensuring code quality
$70,000 – $90,000
Senior Developer5-10 years– Leading the development of complex software solutions
– Mentoring and guiding junior and mid-level developers
– Collaborating with stakeholders and providing technical expertise
– Conducting code reviews and ensuring adherence to best practices
$90,000 – $120,000
Expert/Team Lead10+ years– Leading and managing a team of developers
– Defining technical strategies and architectures
– Overseeing project timelines and deliverables
– Mentoring and coaching team members
– Collaborating with other teams and stakeholders to align technical goals
$120,000 – $150,000+

What are top .Net WCF instruments and tools?

  • Visual Studio: Visual Studio is a comprehensive integrated development environment (IDE) developed by Microsoft. It provides a wide range of tools and features for building and debugging .NET applications, including WCF services. Visual Studio has been the go-to IDE for .NET developers since its initial release in 1997 and continues to evolve with new features and enhancements.
  • WCF Test Client: The WCF Test Client is a handy tool provided by Microsoft that allows developers to test and debug WCF services. It provides a user-friendly interface for invoking service methods and inspecting the responses. The WCF Test Client has been available since the release of WCF in 2006 and remains a popular choice for service testing.
  • WCFStorm: WCFStorm is a commercial tool designed specifically for testing WCF services. It offers a range of advanced features such as load testing, performance testing, and service virtualization. WCFStorm has gained popularity among developers due to its extensive feature set and ease of use.
  • SoapUI: SoapUI is an open-source tool widely used for testing web services, including WCF services. It supports both SOAP and REST protocols, making it a versatile choice for testing various types of services. SoapUI has been around since 2005 and has a thriving community of users and contributors.
  • Postman: Postman is another popular tool used for testing APIs, including WCF services. It provides a user-friendly interface for sending HTTP requests, inspecting responses, and automating tests. Postman has gained significant traction in recent years and is widely adopted by developers and QA professionals.
  • Wireshark: Wireshark is a powerful network protocol analyzer that can be used to inspect and debug network traffic, including WCF communications. It allows developers to capture and analyze packets exchanged between clients and services, helping in troubleshooting and performance optimization. Wireshark has been actively maintained since 1998 and is a widely used tool in the networking community.
  • Microsoft Message Analyzer: Microsoft Message Analyzer is a powerful tool for capturing, displaying, and analyzing network traffic. It supports various protocols, including WCF, and provides advanced filtering and analysis capabilities. Although Microsoft announced the end of support for Message Analyzer in 2019, it remains a valuable tool for network troubleshooting.
  • Fiddler: Fiddler is a web debugging proxy tool that can be used to inspect and intercept HTTP/HTTPS traffic. It allows developers to analyze requests and responses, simulate network conditions, and debug WCF services. Fiddler has been available since 2003 and is widely adopted by web developers and testers.
  • Visual Studio Code: Visual Studio Code is a lightweight and versatile code editor developed by Microsoft. It offers various extensions and plugins that can enhance the development experience for WCF services. Visual Studio Code has gained popularity among developers due to its cross-platform support and extensive customization options.

TOP 14 Facts about .Net WCF

  • .NET WCF stands for .NET Windows Communication Foundation.
  • It is a framework developed by Microsoft for building service-oriented applications.
  • WCF provides a unified programming model for building distributed systems.
  • It allows developers to build secure, reliable, and interoperable applications that can communicate across different platforms and technologies.
  • WCF supports various communication protocols such as HTTP, TCP, Named Pipes, and MSMQ.
  • It offers extensive support for message security, including authentication, encryption, and digital signatures.
  • WCF provides built-in support for transactional operations, allowing developers to build distributed systems with ACID (Atomic, Consistent, Isolated, and Durable) properties.
  • It supports multiple hosting options, including self-hosting, IIS hosting, and Windows Service hosting.
  • WCF supports both synchronous and asynchronous communication patterns.
  • It includes a comprehensive set of tools and libraries for building and consuming web services.
  • WCF has a rich extensibility model, allowing developers to customize and extend its behavior to meet specific requirements.
  • It provides built-in support for service discovery, allowing clients to dynamically discover and consume services.
  • WCF supports both SOAP (Simple Object Access Protocol) and REST (Representational State Transfer) based communication.
  • It is part of the .NET framework and is widely used for building enterprise-level applications.

TOP 10 .Net WCF Related Technologies

  • Languages: C#

    C# is the primary language for .Net WCF software development. It is a powerful and versatile object-oriented language that offers a wide range of features and extensive support for building robust and scalable applications.

  • Frameworks: .NET Framework

    The .NET Framework is a software development platform that provides a comprehensive set of libraries, tools, and runtime environments for building and running .Net applications. It includes the necessary components for WCF development and offers seamless integration with other Microsoft technologies.

  • IDE: Visual Studio

    Visual Studio is the preferred integrated development environment (IDE) for .Net WCF software development. It provides a rich set of tools and features that enable developers to write, debug, and deploy applications with ease. Its intuitive interface and extensive plugin ecosystem make it a top choice for developers.

  • Serialization: DataContractSerializer

    DataContractSerializer is the default serialization mechanism used in WCF. It allows objects to be serialized and deserialized into XML or binary format, making it easy to transfer data between different systems and platforms.

  • Security: Message Security

    WCF supports various security mechanisms, and message security is one of the most popular options. It ensures the confidentiality, integrity, and authenticity of messages exchanged between the client and the service by encrypting and signing the message contents.

  • Transport: HTTP

    WCF supports multiple transport protocols, but HTTP is widely used for its simplicity and compatibility. It allows for easy communication over the web, making it suitable for building web services and RESTful APIs using the WCF framework.

  • Testing: NUnit

    NUnit is a popular unit testing framework for .Net applications, including those built with WCF. It provides a simple and efficient way to write and execute unit tests, ensuring the reliability and quality of the software.

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