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Hire API Developer

We are a leading tech company that offers top-notch API development and integration solutions. Top companies partner with Belitsoft's API developers to enhance their API, app, cloud, and web development projects. Our API development team integrates modern features and functionality to enhance your software according to current market demands. Hire an API programmer from Belitsoft to create custom feature-rich, high-performance, scalable, and secure APIs across various industries that meet your requirements.


Why Outsource API Development

Focus on your Core Competencies

If you have limited experience with API integration for your business application, you may encounter several potential risks, such as insufficient security measures for end-users, and incorrect management of authorization and authentication. By outsourcing to seasoned API professionals, you mitigate these risks.

Get a Cost-Effective Solution 

Discover talented API developers beyond your local area. When outsourcing API development, you get access to skills and expertise at an economical cost. You don't have to maintain and recruit an entire unit of employees and save money on infrastructure such as sitting space, devices, software, etc.  

Why API Developers from Belitsoft

Experienced Pros Only

Trusted by tech companies worldwide, we have successfully matched hundreds of developers. We ensure expert, custom-matched talent meets your business needs.

Every API developer goes through a screening process to assess their communication skills, remote work readiness, and technical abilities (both API-specific and domain-wide). 

Given our services' full-cycle scope, aside from API, we can assemble cross-functional teams of senior project managers, web developers, app developers, user interface designers, and other technical professionals who follow a well-defined development process to create a fully functional solution. 

Effortless Hiring

We handle all timesheets, billing, payments, NDAs, background and reference checks, and legal issues so that you can focus on product development.  

Choose the engagement type that suits you, whether part-time or full-time and change it anytime. 

Whether you have a temporary staffing need or aim to scale your engineering team, our global pool of remote dedicated developers is sure to fit your requirements.

Adjust your team size as needed.

How to Hire an API Developer from Belitsoft

Tell Us Your Needs

Provide us with as much detail as you can about the API developer you need. Our director of engineering will work with you to clarify your goals, technical requirements, and team dynamics. Share the role description, technical specifications, and hiring budget.

Get Qualified Candidates

Receive candidate profiles that match your engineering needs. Our API solutions expert will pre-screen API developers to ensure you receive only the best talent. Choose who to interview based on your preferences.

Hire with Confidence

When you're ready to make a decision, select an API developer to hire. Our team will conduct a manual profile review, video self-introduction, and technical interview or peer programming session to assess the candidate's technical background, work experience, and soft skills. Once you're satisfied, sign an NDA and let us handle the rest of the paperwork.

Collaborate and Track Progress

Communicate with your new API developer through chat or video calls, share files, and monitor project progress.

Effortless Payments

Receive invoices and make payments easily. Try working with your new API developer during a trial period to ensure a good fit before committing to a long-term engagement.

How Much Does it Cost to Hire an API Developer?

Custom API development has a custom price.

Things that impact the cost:

  • Years of experience and technical skills.
  • Timeline for API development project completion, need for development team scaling, the complexity level of API requirements, and data format (WebSockets, JSON, REST, etc.).
  • The availability of product specifications (rough idea; clear idea but no specifications; precise written specifications/wireframes...) and management experience (your experience managing development teams means you don’t need to outsource a dedicated project manager and the price will be lower).

Engage with us to get an upfront cost expectation for an API developer.

How Do We Vet the Best API Developers

Experience and product complexity evaluation

We review the developer's experience and the complexity of the products they have built. Candidates who demonstrate the depth and have worked on end-to-end projects move to the next stage.

Communication skills assessment

During an introductory call, we evaluate the developer's ability to communicate effectively. We also gain a deeper understanding of their technical experience and motivation for API development.

Technical evaluation

We conduct one or more interviews to assess the developer's involvement and performance in building complex software products.

Problem-solving abilities test

We test the developer's mental agility and problem-solving abilities through a combination of live evaluation and timed coding tests, including algorithmic and skill-specific problems.

Verification of past experience

We reach out to past clients and/or employers to verify the developer's real-world experience. We also gather inputs on reliability, punctuality, communication, and responsiveness.

Continual performance assessment

Throughout each engagement, we assess the developer's performance and ensure they maintain Belitsoft's quality standards.

Skills to look for in backend API developer

Backend API developers understand and implement third-party integrations smoothly in applications, enabling business logic to be accessed from web, mobile, and IoT devices. They have a good grasp of security concepts like OWASP to ensure data security. Their focus is on delivering work with low latency and scalability, from design to coding and final release.

These developers manage the exchange of data between the server and users, primarily focusing on server-side logic for high performance and quick responses. They may also integrate front-end elements developed by others. A basic understanding of front-end technologies is needed.

An ideal API developer candidate has experience with complex tech implementations and a drive to continually improve and simplify systems.


  • API interface and service development (internal/external)
  • Improving efficiency through identification of areas for improvement
  • Developing, testing, deploying, and supporting services
  • Monitoring and reporting features for service effectiveness
  • Independent solution design and architecture
  • API engineering, building, and scaling
  • Web service design, development, documentation, and maintenance using AWS API Gateway, Lambda, and other serverless tech.

API developer vs Backend Developer

Backend developers and API developers both work on the backend of an application, but with different focuses. Backend developers create server-side logic, while API developers - the communication channel between systems and parts of the same system, or application programming interface allowing data and functionality to be shared. It is usually implemented through a web service API using REST and JSON.

It's not about front-end interface.

The front-end interface is the user interface of an application and is what the user interacts with. It is implemented using technologies such as HTML, CSS, and JavaScript. The front-end interface communicates with the backend, typically through an API, to access data and functionality and is responsible for visual presentation.

Skills to look for in Java API developer

A Java API Developer is responsible for designing, developing, and maintaining API specifications using OpenAPI Specifications/YAML to ensure scalability and security. The role involves working with various application teams to understand their business needs, ensuring API documentation is up to date, and troubleshooting API-related issues.

Key skills and qualifications of a dedicated Java developer to build an API include:

  • Experience in Agile methodologies, specifically Kanban or SCRUM.
  • Knowledge of Java technologies (Java, J2EE, Webservices, Spring, Spring Boot).
  • Hands-on experience in developing Spring Boot, Spring Cloud, Spring Integration or Node.JS based Microservices.
  • Experience with API Gateway & Management, Docker & Kubernetes, AWS cloud products, and API security protocols (e.g. OAuth, SAML).

Responsibilities of a Java API Developer include API management platform readiness, API portal setup, API gateway development, API implementation, security policies implementation, and full lifecycle API project management. The individual is expected to act as a subject matter expert in API development and support multiple projects.

Skills to look for in .NET API developer

To be a skilled ASP.NET Web API developer, one should have knowledge in the following areas:

  • Understanding of HTTP protocols and RESTful API design principles.
  • Proficiency in using .NET framework, specifically .NET Core.
  • Strong C# programming skills.
  • Experience with ASP.NET Core, including the use of middleware, controllers, and models.
  • Knowledge of Entity Framework for integrating APIs with SQL databases.
  • Understanding of security measures such as OAuth2 authentication and SSL encryption.
  • Ability to write automated tests using xUnit or similar testing frameworks.
  • Familiarity with front-end technologies such as Angular or React.
  • Ability to monitor API performance, troubleshoot issues, and implement solutions in a timely manner.
  • Understanding of API documentation, including Swagger documentation.

It's recommended to be familiar with Authorize.NET API as it is a popular payment gateway solution used for online transactions.

Here are some other types of .NET APIs to know:

  • ASP.NET Core Web API: A high-performance and scalable API framework for building RESTful APIs with .NET.
  • ASP.NET Core SignalR API: A real-time communication API for building real-time applications such as chat, notifications, and live updates.
  • Microsoft Graph API: An API for accessing data and insights from Microsoft 365 cloud services such as Exchange, OneDrive, and Azure Active Directory.

For businesses considering Azure cloud migration and API modernization, the expertise of .NET API developers in Azure API Management is crucial to quickly build and publish APIs.

Skills to look for in Python API developer

The ideal candidate should have a solid understanding of the Python language, including its syntax and data structures. They should be able to write performant, elegant, and legible code that is easy for team members to contribute to. They also should be capable of solving challenging tasks that go beyond everyday Python API development.

Python API developer should have solid experience in Python web frameworks such as Flask and FastAPI. They should be comfortable developing and maintaining REST APIs within a microservice architecture.

The candidate should have experience interfacing with databases, including knowledge of ORM on Python and MongoDB. They should be able to write unit tests for their code and be familiar with Linux.

A good grasp of scalability and experience developing performant applications is essential. The candidate should be able to write highly legible code using design patterns and best practices.

The candidate should have a general understanding of web application backend development and be familiar with Linux. They should be able to write good Python unit tests.

If planned that candidate may join the engineering department in a team of Python backend developers, their mission will include the conception, development, and optimization of the API and associated services and functionalities. They will participate in the technical design of the API in collaboration with a software architect and ensure the consistency and quality of the code in production. They will also participate in code reviews with their peers on Gitlab.

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Partner / Department Head
"I've been leading projects and managing teams with core expertise in ERP development, CRM development, SaaS development in HealthTech, FinTech and other domains for 15 years."
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