409 API developers in 139 agencies found

AD
Full-stack Ruby+JS developer with solid background in web and mobile development. Ruby, Rails, Node.js, React.js, Vue.js, React Native.
In particular, I’m experienced with Ruby, Ruby on Rails, Sinatra, Hanami, JavaScript, jQuery, CoffeeScript, Vue.js, React.js, and Vert.x, HTML, CSS, Responsive Web Design and Elasticsearch. I have a w...
3 Projects completed
GMT+3 Middle East
All rates are indicative, annual rate includes 10% discount
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Updated: 16 Nov 2018
AS
Ruby on Rails developer with great experience in building complex APIs and integrations
I'm a Ruby on Rails developer with great experience in building complex APIs and integrations. Recently, I've also built several chatbots and integrated applications with 3rd party systems.
2 Projects completed
GMT+2 East Europe
All rates are indicative, annual rate includes 20% discount
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Updated: 14 Nov 2018
MM
Android Engineer - smart and responsible with the desire to build useful and efficient applications.
Marta has 2+ years of experience in developing Android native applications, have experience with different frameworks and technologies such as GIT, Facebook and Parse SDK's. Her strong side is good co...
5 Projects completed
GMT+2 East Europe
All rates are indicative, annual rate includes 20% discount
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Updated: 16 Nov 2018
Skilled iOS App Developer with a strong current background in industry technology.
All rates are indicative, annual rate includes 20% discount
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Updated: 12 Nov 2018
VG
A passionate QA engineer with strong experience in automation, manual, usability, and API testing, defect tracking, and test cases
A talented QA engineer with 2+ years of experience who tackles grand technical challenges. Victor has a strong background in manual testing, automation testing with Selenium, Puppeteer, Java, and Kata...
3 Projects completed
GMT+2 East Europe
All rates are indicative, annual rate includes 20% discount
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Updated: 12 Nov 2018
GS
Senior Mobile (iOS, Android), and backend (rails) developer.
All rates are indicative, annual rate includes 20% discount
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Updated: 16 Nov 2018
Ruby on Rails Full Stack Developer. eCommerce and online Marketplace focused
Oleksandr has great analytical skills and ability to solve complex problems. He is getting new skills fastly and applies them in the working projects successfully and promptly. Excited about technolog...
4 Projects completed
GMT+2 East Europe
All rates are indicative, annual rate includes 20% discount
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Updated: 16 Nov 2018
Passionate Full Stack developer with experience more than 4 years in software development
All rates are indicative, annual rate includes 20% discount
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Updated: 16 Nov 2018
Android developer with excellent experience and outstanding communicational skills.
All rates are indicative, annual rate includes 20% discount
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Updated: 12 Nov 2018

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How to Hire a Great API Development Specialist

An API, or Application Programming Interface, is a set of tools that define how the software components should communicate and interact with each other. Besides, an API makes it possible for a developer to communicate with servers and get specific data by using requests and calls. But the most powerful feature of API’s is that they allow the developers to create apps which request data from multiple sources, such as Facebook or Google Maps. That is why qualified API development specialists would be a valuable addition to any software development project team. But how to define the level of professionalism when interviewing an API developer? Let’s find out which skills and knowledge you should look for.

Skills of a Great API Development Specialist

Please note that nowadays most companies prefer REST API’s over SOAP API’s due to their simplicity, so we will be using the skills of a REST API developer in our example skillset.

When preparing to interview an API programmer, keep in mind the following skills:

  •    Strong development experience in producing RESTful API’s.
  •    Fluency in programming languages (depending on your project), typically Java, C#/ASP.NET.
  •    Understanding of J2EE server-side technologies, such as JMS, JAX-WS, CXF, etc.
  •    Familiarity with design principles and best practices that should be applied during the REST API implementation.
  •    Understanding of the Developer Experience (DX) principles.
  •    Understanding of JSON and XML structured data formats.
  •    Experience with API documentation/design frameworks, such as Swagger/Open API. Ability to create self-documented API’s.
  •    Fluency in API modeling languages, such as YAML.
  •    Deep knowledge of API lifecycle management platforms.
  •    Proficiency in developing API’s for both internal and external use.
  •    Experience in securing API’s with token-based authorization by using Oauth, Open ID Connect, SAML, etc.
  •    Sound knowledge of integration tools, such as API Management, B2B Gateway, Enterprise Service Bus, etc.
  •    Experience with API testing and test automation.

The hiring and shortlisting process may be quite tedious, so we hope that the example skills outlined in this article will help. With this skillset in mind, it will be easier for you to interview API development specialists and select the candidate that is a perfect fit for your project.