Hire Web API developers

Rapidly create efficient, scalable APIs. Expert Web API developers ensure seamless integrations—hire now and onboard within days.

Matheus
Full-stack Web Developer
Brazil/(GMT -3:00)
The developer has over nine years of experience in building and mentoring engineering teams, with a strong emphasis on software architecture, design, and full-stack development, encompassing both back-end and front-end. His technical expertise includes Node.js, React, TypeScript, AWS, and Next.js. Having worked in dynamic, agile environments, he has contributed to companies achieving their goals by providing robust technical leadership and developing sustainable engineering solutions.
Experience
11 years
Availability
Full-time
Web APIReactNode.jsNext.jsReact NativeJavaScriptTypescriptAWSKubernetesDockerRedisMongoDBSupabaseSQLPostgreSQLStripe APIOpenAI APIAmazon EC2Amazon ECSGCPLLMREST APISocket.ioClaude LLM
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Paulo
Full-stack Web Developer
Mexico/(GMT -6:00)
Paulo is a mid-to-senior full-stack engineer with extensive experience in .NET, Azure cloud services, and enterprise backend development. He demonstrates solid practical skills in Azure Functions, Service Bus, CI/CD, and distributed systems, and is comfortable contributing to React-based frontends. Feedback highlights strong communication, technical ownership, and a pragmatic, execution-focused approach, though his manual .NET implementation skills are somewhat less robust than his overall experience suggests.
Experience
23 years
Availability
Full-time
Web API.NETReactTypescriptJavaScript.NET CoreC#Azure Service BusAzure FunctionsElasticSearchMicrosoft AzureREST APIDockerASP.NETOAuthCosmosAzure DevOpsSplunkMicrosoft SQL ServerCakePHPjQueryMySQL
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Vitor
Full-stack Web Developer
Brazil/(GMT -3:00)
Vitor is a skilled senior engineer with over 10 years of experience in software development. His expertise lies in problem-solving, whether it's technical, procedural, or business-related. Vitor thrives in bridging the gap between business and technical teams, ensuring seamless communication and alignment. With strong skills in .NET, TypeScript, SQL Server, and Angular, he has successfully led various software projects, driving them to completion with a focus on delivering practical and effective solutions.
Experience
13 years
Availability
To be verified
Web API.NETAngular.NET CoreC#APIReactAWSMicrosoft AzureEntityMicroservicesPostgreSQLKubernetesMicrosoft SQL ServerFirebaseNativeScriptNoSQL
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Danilo
Full-stack Web Developer
Ireland/(GMT)
Danilo is a mid-level to lower senior full-stack engineer with strong hands-on experience in .NET, C#, React, and SQL Server, focusing on business application development. He demonstrates solid practical skills in end-to-end feature delivery, client communication, and pragmatic problem-solving. His expertise is primarily at the application level, with limited depth in advanced backend, distributed systems, and DevOps.
Experience
18 years
Availability
To be verified
Web APIReactVue.js.NETC#Microsoft AzureMicrosoft SQL ServerJavaScriptDockerNUnitAngularMicroservicesFlutterCI/CDMicrosoft Power BITypescriptDartPostgreSQLASP.NETOracleAzure SQL.NET Core
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Scott
Back-end Web Developer
Netherlands/(GMT +1:00)
Scott is a senior .NET engineer with 18 years of commercial experience focused on C#, .NET, Web API, and SQL Server. He has led teams and contributed to enterprise applications in healthcare, logistics, and legacy modernization. His strengths include system architecture, distributed systems, CI/CD, and proactive problem-solving. Scott communicates clearly and demonstrates strong ownership and collaboration skills.
Experience
18 years
Availability
Full-time
Web API.NETASP.NETMicrosoft SQL ServerSQLReact.NET CoreC#RustCI/CDJavaScriptTypescriptAngularAWS LambdaAIAPIASP.NET COREASP.NET Web APIAngular.jsEntity
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Sonia
Front-end Web Developer
Poland/(GMT -3:00)
Sonia is a senior front-end web developer oriented toward best practices in commercial software engineering. She has rich experience in the React ecosystem and can build project architecture from scratch. Sonia advocates for clean code and always tries to do her very best in programming. She also managed a team of juniors during one of her projects, and she is also interested in working as a solo developer. She is no stranger to content platform creation and management in her professional path, including VR, music, and publishing.
Experience
11 years
Availability
To be verified
Web APIReactNext.jsTypescriptJavaScriptNode.jsMongoDBUI/UXExpress.jsWebpackFirebaseGitREST APICSSReact NativeFigmaAngularAPIBlockchainStorybookSPAThree.js
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Dmitry
Mobile Developer
Portugal/(GMT)
Dmitry is a talented Flutter developer who has already successfully completed several projects through Lemon.io and worked as our technical interviewer. He will not only be able to build out your product but also help out with the business side of things if needed: Dmitry created MVPs and co-founded several projects himself. His key achievements include scaling an engineering team to over 70 people, building a new Flutter department from scratch, and improving team productivity by 40% through strategic process optimization.
Experience
15 years
Availability
Part-time
Web APIFlutterJavaDartFirebaseFirestorePHPAndroidMySQLREST APISQLiteCI/CDiOSFlutter WEBClaude LLMTelegramBotAPIStripe APIClaude CodeGCP
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Denis
Full-stack Web Developer
Ukraine/(GMT +2:00)
As a strong senior full-stack developer, Denis brings nearly ten years of experience to the industry. Specializing in React and Next.js, he is fluent in TypeScript and JavaScript. Denis has extensive expertise in building MVPs and implementing business logic, consistently contributing to the successful launch of web products. His proficiency in creating project architecture makes him an excellent addition to any web development team.
Experience
11 years
Availability
Part-time & Full-time
Web APIReactNode.jsTypescriptJavaScriptVue.jsNext.jsGraphQLMongoDBAJAXWebpackMySQLReduxWebSocketJestREST APIApollo GraphQLLambdaTwilio APIWeb SocketsWeb ComponentsPostgreSQLAPITailwind CSSGatsby.jsZustandNest.jsExpress.jsWebhooks
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Vlad
Full-stack Web Developer
Ukraine/(GMT +2:00)
Vlad is a Full-Stack developer who is highly interested in .Net. He has 5+ years of experience writing various web applications, such as gambling applications, a web application or restaurants with a booking system, and a web application for stress tests. Vlad is a calm and pleasant person who could fit any team.
Experience
9 years
Availability
To be verified
Web APIC#ASP.NET.NET CoreReactASP.NET MVC.NETOOPEntityHTMLLINQTypescriptGitWPFMicrosoft SQL ServerMongoDBMicrosoft AzureJavaScriptNode.jsAngularNUnitSeleniumJasmineCSSBootstrapjQueryADO.NETSQLAWSPostgreSQLDocker
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Reached out on Monday evening, connected Tuesday morning, had four qualified candidates by Wednesday.

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Why hire Web API developers through our platform?

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What you should know about modern Web API devs

by Lana Bochek

Recruiter at Lemon.io

Verified Expert

Hiring Guide: Web API Developers

Hiring expert Web API developers is essential for any modern business looking to build scalable, secure, and efficient applications that communicate seamlessly across platforms. APIs (Application Programming Interfaces) serve as the backbone of digital ecosystems—connecting software, enabling data exchange, and powering everything from mobile apps to enterprise systems. Skilled Web API developers help you design, implement, and maintain robust APIs that drive interoperability and business growth.

Why Hire Web API Developers?

In an era dominated by interconnected applications, APIs are the invisible glue that holds software systems together. Web API developers specialize in creating interfaces that allow different applications to communicate efficiently, whether over REST, SOAP, or GraphQL protocols. Their expertise ensures your products are fast, secure, and easy to integrate with external services and third-party platforms.

Integration Power: Connect your product to payment gateways, CRMs, analytics tools, and external data sources.

Scalability: Build APIs that handle millions of requests reliably across distributed systems.

Security: Implement authentication, authorization, and encryption to protect data in transit.

Speed and Efficiency: Design APIs optimized for performance, caching, and minimal latency.

Future-Proof Architecture: Support ongoing innovation by creating flexible, versioned, and modular APIs.

Core Responsibilities of a Web API Developer

Design, build, and maintain RESTful, SOAP, or GraphQL APIs.

Integrate third-party services and internal systems through secure endpoints.

Develop reusable microservices for scalable back-end infrastructure.

Ensure APIs comply with best practices for authentication, rate limiting, and versioning.

Write detailed API documentation using tools like Swagger or Postman.

Collaborate with front-end developers, DevOps engineers, and QA teams for full-cycle integration.

Monitor and troubleshoot API performance and error logs using tools such as Datadog or New Relic.

Essential Skills and Technologies

Languages: Expertise in Python, JavaScript (Node.js), Java, C#, PHP, or Go for API development.

Frameworks: Experience with Express.js, Django REST Framework, ASP.NET Core, Spring Boot, or Laravel.

API Design Tools: Familiarity with Swagger (OpenAPI), Postman, and GraphQL Playground.

Databases: Proficiency with SQL and NoSQL databases such as PostgreSQL, MySQL, MongoDB, and Redis.

Authentication and Security: Implementing JWT, OAuth2.0, and API key-based authentication securely.

Cloud and DevOps: Experience deploying APIs to AWS, Azure, or Google Cloud using Docker and Kubernetes.

Performance Optimization: Implement caching layers, asynchronous queues, and load balancing strategies.

How to Hire Web API Developers

Define Project Requirements: Identify what type of API (REST, SOAP, or GraphQL) your project requires and the data it will exchange.

Evaluate Technical Competence: Assess the developer’s experience with relevant frameworks and tools like Swagger and Postman.

Review Past Work: Ask for examples of APIs they’ve designed or integrated, focusing on scalability and documentation quality.

Test Communication and Collaboration: Web API development involves coordination with front-end, QA, and operations teams, so ensure effective communication skills.

Start With a Pilot Project: Engage candidates for a short-term project to evaluate their code quality and understanding of your business logic.

Rates and Hiring Models

The cost of hiring Web API developers varies depending on experience, location, and project scope. Typical rates are:

Junior Developer: $35–$50/hour — assists with existing API integration and testing tasks.

Mid-Level Developer: $50–$75/hour — builds APIs from scratch, handles documentation, and manages integrations.

Senior Developer: $75–$120/hour — architects high-traffic API ecosystems and ensures compliance with security and scalability standards.

Common engagement models include:

Dedicated Developer: Full-time resource focused exclusively on your project.

Project-Based: Ideal for fixed-scope API design and deployment projects.

Consulting Engagement: Hire senior experts to audit or optimize existing APIs and integration pipelines.

Advantages of Hiring Web API Developers

System Interoperability: Connect multiple applications for seamless data flow.

Improved Performance: Deliver faster response times and optimized load handling.

Data Security: Protect sensitive data through encryption, secure tokens, and robust authentication.

Scalable Architecture: Design modular APIs that grow with your business.

Reduced Downtime: APIs built with monitoring and fallback mechanisms ensure consistent uptime.

Back-End Developers — build server-side logic and maintain core business APIs.

Full-Stack Developers — develop both API backends and front-end integrations.

DevOps Engineers — manage deployment pipelines and CI/CD integration for APIs.

Mobile Developers — consume and test Web APIs within mobile applications.

Cloud Engineers — deploy and maintain APIs in secure, scalable cloud environments.

Best Practices for Managing API Development Projects

Follow REST or OpenAPI design principles for consistency and scalability.

Maintain detailed documentation for internal and external teams.

Use automated tests to verify endpoint reliability after each deployment.

Implement API versioning to avoid breaking existing integrations.

Monitor performance and uptime through cloud-based dashboards.

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FAQ

What does a Web API developer do?

A Web API developer designs and builds application programming interfaces that allow software applications to communicate. They develop secure, high-performance endpoints that facilitate data exchange between services, applications, and users.

What technologies are commonly used in Web API development?

Common technologies include Node.js, Python, Java, .NET Core, and PHP. Developers also use REST, GraphQL, or SOAP protocols, along with Swagger for documentation and JWT or OAuth2.0 for security.

How much does it cost to hire Web API developers?

Hiring Web API developers typically costs between $35 and $120 per hour depending on experience, project size, and technical requirements. Senior-level developers who handle architecture and security integration may charge more.

What’s the difference between REST, SOAP, and GraphQL APIs?

REST APIs are lightweight and widely used for web and mobile apps. SOAP APIs are more rigid but highly secure and structured. GraphQL allows clients to query specific data, reducing over-fetching and improving efficiency.

Why hire Web API developers from Lemon.io?

Lemon.io provides access to vetted Web API developers with expertise in REST, SOAP, and GraphQL. You get professionals experienced in building secure, scalable APIs tailored to your business needs—with a risk-free trial to ensure a perfect match.

Book a call with an expert so you can be sure in your hiring strategy

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Why hire Web API

Over 6500 companies use Web API as their main framework, including giants like Google, Amazon and Lyft.

High-quality web apps

Web API's modular approach lets devs reuse components, so they can seamlessly manage app complexity.

Faster development process

Web API's architecture and a vast library of pre-built components speed up development, so you can get to market sooner.

Enjoyable user experience

From smooth, responsive interfaces to reduced loading times, devs can use Web API to boost usability.

Scaling made easy

Web API's modular, component-based architecture makes it easy to scale applications as traffic grows.

Case studies

Aerospace

The experience with Lemon.io has been fantastic. The interview process has been good, the caliber of people – excellent and integration has been very smooth.

Marc HorowitzCOO of SkyFi

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Telecommunications

We needed extra developers to clean off all these bugs so the company could skyrocket.

Conor MackenDirector of Engineering

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We needed extra AI engineers to keep our ambitious project running.

Mike LukimanFounding Senior Software Engineer at Everstar.ai

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Frequently asked questions

Hiring a developer proficient in “Web APIs” depends on exactly which skills your organization is seeking; this can encompass anything from REST, GraphQL, and similar architectures. Refine searches on common job boards (Glassdoor, Indeed, LinkedIn, and more) by including programming language(s), backend framework(s) or libraries, the type of application you’re building, or related architecture in tandem with the “Web API” keyword itself. Lastly, using a dedicated recruitment platform, such as Lemon.io, will expedite finding specialists.

When selecting the perfect developer to create solid and performant Web APIs, Lemon.io makes the process simple and removes most risk through our 20-hour paid trial period, enabling everyone involved to collaborate on genuine needs during which clients can evaluate their new engineer in a context that is both realistic and aligned with their technical specifications.

Don’t fret — Lemon.io provides a substitution if necessary. This minimizes any disruptions to workflow should things not turn out exactly how you envisioned.

There’s a massive and constantly increasing demand for great Web API developers. This is driven by two trends: the growing importance of secure data exchange and communication between apps and the increasing need to connect systems, apps, and platforms together.

The industries where developers with extensive Web API knowledge are in very high demand are eCommerce, online services, social media, and the finance sector. To summarize, anyone seeking to build robust integrations using well-designed secure APIs.

We usually can provide profiles of developers with experience in developing Web API (and not just a few “good” resumes that mention RESTful principles) within 24-48 hours. It is left up to you from here. If additional interviews or coding tests are necessary to the timeline, this could extend 5-7 more days. Yet, our clients often tend to make their hires and get a Web API developer to work on integrating systems for them in just 2–8 days.

Our 3-stage vetting process requires every candidate to demonstrate their mastery of API and other logical abilities to provide you with the best developer who can quickly fit into your projects.

At Lemon.io, you will directly cooperate with the developer of your choice, which will reduce communication efforts and paperwork. We take care of that for you, so you can get more work done and focus on your project.

Dedicated developers from 50+ countries in different time zones mean you can always find a developer who fits your project work without any hassle.

We go through an extensive verification process to find the best Web API developers.

1. The candidates are taken through a detailed profile, focusing on their experience in creating APIs and specifically targeting those who know the principles of REST.
2. We check CVs to confirm the applicants’ abilities and work history claims by looking at their LinkedIn profiles or project portfolios.
3. The complete submission includes a technical assessment on Coderbyte, evaluating the candidate’s knowledge of core Web API technologies and best practices.
4. Best-of-breed move onto a final interview with a web service expert, which may include code reviews if the developer’s skills are aligned for this project, looking at past API integration work the candidate has done in practice, and asking them to solve real-world problem scenarios.

Web API developers build APIs, particularly RESTful services, that enable disconnected systems to communicate and are the linchpin in any company or project that is meant to leverage different online connected data. Those developers let your applications talk to the other software. They empower high-performing companies across all sectors with the tools to connect more readily.

Web API experts streamline processes of information exchange across different types of businesses such as FinTech, online marketplaces, e-commerce platforms, SaaS, etc.

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