Web Services Developers Hiring Guide

A short code snippet that uses XML to connect applications over the internet.

Web services are self-contained, modular pieces of code that use XML for message passing. They assist in data exchange between client and server applications through the world wide web. Web services use standard protocols such as HTTP for sending data over a network and are highly beneficial for providing connectivity to online businesses.

Web services usually communicate through open standards such as SOAP and REST. You can model them for particular tasks and also reuse them as needed. Web service code is usually exposed over a network, which means you can adapt it for different applications and your own specific requirements. You can also choose which web service you want your application to connect to. 

Web services are loosely coupled, which means you can adapt your code without worrying about user requests or component connections. As a result, web services are easily deployable and manageable. They can also be deployed over firewalls.

Web Services Developers Hiring Guide
  • Web Services Developers Hiring Guide 1

    Hiring Guide

  • Web Services Developers Hiring Guide 2

    Interview Questions

  • Web Services Developers Hiring Guide 3

    Job Description

Apps developed in different programming languages can communicate and exchange data through web services, which use XML to ensure platform independence. Web services can be used to invoke different procedures, functions, and methods over a network. 

Web services are secure and agile. You can use them to pass documents, texts, and objects over the internet. They can also safely handle complicated tasks such as integrating frameworks. A web services provider is used to create web services and make them accessible to requestors.

Relevance of web services in today's industry

Web services play an integral role in information exchange over the internet. Web services can connect different types of applications, whether they are local, distributed, or cloud-based. All major companies such as Amazon, Microsoft, Google, and Dell use web services for exchanging data and messages over different networks. 

The interoperability of web services makes them very valuable. It allows companies to save time and cost of finding a communication medium for connecting different applications. In addition, the SOAP protocol, normally used in web services, is also a low-cost option for transferring XML data over a network. This further reduces the cost associated with developing and using web services.

Issues companies have while hiring web services engineers

One of the major problems companies face when hiring an effective web services engineer is that most engineers only know the basics of web service development. They are unequipped to handle the technical challenges that come with it. Most web services can’t handle long-term sessions or large service requests. An experienced engineer should know how to optimize services along with managing their downsides.

Another issue with web service development is that HTTP and HTTPS servers are stateless, i.e., they don’t keep track of any user or their data. This means that web services have to be engineered in such a way that every request has metadata required to complete the request. That requires business expertise and knowledge that many engineers lack. As a web service engineer, you should be able to establish communication for stateless sessions securely.

How to select the perfect web services engineer?

A web services engineer has excellent knowledge of network communication and web services. Using that, they create platform-independent services for the internet. To check if a candidate is good, test their knowledge of web development. They should know how to integrate data into backend services and databases. 

Go with an engineer who knows API modeling. The engineers should also be proficient in HTML, AJAX, Java, and Javascript. In addition, candidates with knowledge of SQL and Linux should be preferred.

What’s the difference between web services and APIs?

API refers to the application programming interface, an interface used for building functionality over a network. It can run on both online and offline platforms and doesn’t need a network to work. It can also run on different protocols. 

On the other hand, web services are specific code snippets you can use to complete a specific task. They require a network for execution and only use specific protocols for their operations (SOAP, REST, UDDI).

What is UDDI?

UDDI stands for Universal Description, Discovery, and Integration. It’s an XML framework for web service assistance. It uses Web Service Description Language (WSDL) to define service availability.

What are loosely coupled and tightly coupled systems?

In a loosely coupled web system, the users aren’t bound to any particular component. That means that the components are independent and can be modified easily. Web services are generally loosely coupled.  

In a tightly coupled system, there is a direct connection between the user and the components. Therefore, if the client interface is changed, the server logic also needs to be changed to keep working properly.

What are the tools that you can use to assess a web service?

You can use the SoapUI tool for checking SOAP and REST web services. It simulates data transfer to check the functionality and state of a web service. The Poster is a Firefox add-on for web services analysis, while you can use Postman for Chrome.

You can also use WebInject to perform regression testing on services. It’s a command-line tool that evaluates systems response time.

Define synchronicity of web services.

Web services can be both synchronous and asynchronous. In synchronous web services, all client interactions are stopped till a call is returned. Once the call is returned, further client interactions or tasks are performed.

In asynchronous web services, the customer doesn’t wait for the service to complete its process. Instead, they can continue sending data while the first call is being returned.

We are looking for a highly qualified engineer to join our web development team. They will work on API/web-service design and development. We are looking for smart individuals who have good communication skills and can work on large projects.

The engineer should be able to perform code review and analyses. This is an excellent opportunity for engineers who want to work on exciting problems and improve their skills.


  • Work on reusable and advanced architectures for web services 
  • Develop, test, and implement web services. Should also be able to work on different technologies and APIs.  
  • Use optimization techniques to improve application performance and security. 
  • Perform code review to identify bugs and errors. 
  • Use API modeling language and annotations for passing queries.
  • Use SQL statements for ORM databases. 
  • Follow best industry practices and standards.
  • {{Add other relevant responsibilities}}

Skills and Qualifications

  • Knowledge of web design and development. 
  • Prior experience with web services. 
  • Experience in designing reusable code and modules. 
  • Proven experience with REST and third-party APIs
  • Experience with languages such as PHP, Python, Javascript, Java.
  • Experience with code versioning tools (such as Git)
  • Knowledge of object-oriented principles and server-side scripting. 
  • Problem-solving skills and team spirit 
  • {{Add other frameworks or libraries related to your development stack}} 
  • {{List education level or certification required}}

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