Hire the Top 3% of API Developers in 48 Hours

Hire API developers, engineers, and programmers on demand. Top companies and startups choose API developers from Toptal for RESTful services, GraphQL, third-party integrations, API security, and more.

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Featured Talent

Erez Nassimi, Accomplished API Freelancer.

Erez Nassimi

Verified Expert in Engineering
31 Years of Experience

API Developer

Erez has 30 years of experience in software development and 15 years in team building and management. His expertise covers multiple languages (C++, C#, Pascal, SQL), frameworks (.NET), paradigms (OOP, REST), platforms (Windows), protocols (Diameter, FIX), including API development, design patterns, web scraping, and clean coding. Familiar with stock options, currency exchanges, and trading/algo-trading, he has won innovation awards at Amdocs, contributing to CodeProject and StackOverflow.

APIWindows DevelopmentC++C#.NETSQLVisual Studio DevelopmentWeb ScrapingREST APIWeb DevelopmentData ScrapingCGit
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Satish Babu Dakudora, Freelance API Programmer for Hire.

Satish Babu Dakudora

Verified Expert in Engineering
13 Years of Experience

API Developer

Satish is an adaptable and technically strong professional with a customer business value-add mindset and several years of experience in quality assurance for companies like Deloitte and Consensys. While Satish specializes in Selenium, Cypress, and API testing, he's also comfortable building automation test frameworks and recently led the technical portfolio for an automation project.

APISeleniumJenkinsAgile DevelopmentJavaQuality Assurance EngineeringGitJiraWindows DevelopmentPostmanMicrosoft Teams DevelopmentQA AnalysisTest Automation
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Claudio Nazzari, API Freelancer.

Claudio Nazzari

Verified Expert in Engineering
18 Years of Experience

API Developer

Claudio has over 20 years of software development experience and a cybersecurity degree. He has handled back-end, front-end, and full-stack development, DevSecOps, application security, penetration testing, and solutions architecture. With his combined expertise, Claudio focuses on helping companies by developing and architecting secure and resilient web and mobile applications.

APIJavaJavaScriptMicroservices DevelopmentFront EndBack-end DevelopersNode.jsVue.jsAngularGitTypeScriptPostgreSQLDatabase
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Anne Adams, Accomplished API Freelancer.

Anne Adams

Verified Expert in Engineering
19 Years of Experience

API Developer

Anne is an experienced developer who has worked both for large corporations and startups. After building financial trading applications for eight years as an engineer at Merrill Lynch, Anne founded and built LoudUp, a music-based social network that she designed, developed, and launched from the ground up. She specializes in .NET technologies and JavaScript.

APIFacebook APISQLC#XamarinAJAXJSONjQueryWindows DevelopmentVisual Studio DevelopmentWeb Development
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Sreeram Kartheek Vennapusa, API Engineer.

Sreeram Kartheek Vennapusa

Verified Expert in Engineering
14 Years of Experience

API Developer

Sreeram is an automation lead with 12 years of experience designing, developing, testing, and maintaining eCommerce, CRM, and web apps. He has a solid background in working in fast-paced environments, understanding business requirements, and automating accordingly. Sreeram analyzed software architecture documents (SAD) and use case documents and developed test strategy documents. He has hands-on knowledge of continuous integration tools like Jenkins, Git, AWS, and Docker.

APIMacOSLinuxJavaDatabaseWindows DevelopmentTest AutomationQuality Assurance EngineeringJavaScriptSeleniumAgile DevelopmentCucumberQA Analysis
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Gaurav Garg, Senior API Programmer and Consultant.

Gaurav Garg

Verified Expert in Engineering
9 Years of Experience

API Developer

Gaurav is a 9x Salesforce certified professionl with over 10 years of experience within Salesforce and project delivery. He's proficient in Lightning Web Component (LWC) and Salesforce Lightning and Classic. Being proficient in code design patterns for scenarios and process-based structures, Gaurav designed schema structures to handle eCommerce, manufacturing, and insurance industry processes. He led an API structure model deisgn that brought low maintenance and scalability to a project.

APIData MigrationSalesforce DevelopmentVisualforceApexREST APIIntegrationSalesforce Administration
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Pankaj Batra, Freelance API Engineer.

Pankaj Batra

Verified Expert in Engineering
23 Years of Experience

API Developer

Pankaj is a hands-on professional and entrepreneur with 20+ years of experience in product development, planning, architecture and design, team building, and business leadership. He has led teams in the business-growth phase across enterprise software, advertising, B2B SaaS, education, personal finance, food tech, and logistics. Pankaj's specialties include database design, API development, product management, and back-end development in Ruby on Rails, Java, SQL, and AWS.

APIWeb ScrapingJavaScriptAutomationBack-end DevelopersREST APIDevOpsJavaMySQLStartup DevelopmentRubyAWSSQL
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Marco Sanabria, Toptal API Developer.

Marco Sanabria

Verified Expert in Engineering
14 Years of Experience

API Developer

Marco is a passionate SDET who always looks for solutions that automate manual processes in the development lifecycle. With over a decade of experience, he has worked on several projects, performing as a QA automation engineer, tech lead, and coach. Marco has conducted testing in several layers of modern web applications, including UI, API, and performance. He has also led teams developing QA strategies from the ground up.

APIJavaScriptQA AnalysisQuality Assurance EngineeringSeleniumGitPostmanTest AutomationFront End
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Dmitry Pavlov, API Freelancer.

Dmitry Pavlov

Verified Expert in Engineering
25 Years of Experience

API Developer

Dmitry is a top-notch developer with 20+ years of experience creating .NET web applications. These days, he mainly deals with ASP.NET Core and Blazor (C# and .NET Core) software development and architecture design. Known to clients as "the coding machine," Dmitry is a 9-time recipient of the Microsoft MVP Award for developer technologies and is a capable community leader. He has a Master of Science degree in computer science and a PhD in geology.

APISoftware ArchitectureAzureMicrosoft DevelopmentC#JavaScript.NETTwilio DevelopmentjQueryXSLTXMLVisual Studio DevelopmentAgile Development
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Hemant Talele, Toptal API Developer.

Hemant Talele

Verified Expert in Engineering
23 Years of Experience

API Developer

Hemant is a seasoned MuleSoft architect/SME and senior developer with 17+ years of software project experience and specialization in the MuleSoft Anypoint platform. He has extensive work experience working with international (US, Canada, and UK) clients on software projects. Hemant is a self-starter who is able to work independently or in a team with limited supervision and great efficiency. He has worked with many clients to formulate solutions customized to their needs.

API
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Julien Loutre, Freelance API Developer for Hire.

Julien Loutre

Verified Expert in Engineering
14 Years of Experience

API Developer

Julien is a professional software engineer with 15+ years of experience. A former team leader and user operations analyst at Facebook as well as a former project manager, he is also the co-founder and CTO of a trivia company with 280+ thousand players and $1+ million in annual revenue. Julien specializes in scalable AWS Node.js microservices but also has years of experience as a full-stack engineer with 7+ years of experience with AngularJS.

APIJavaScriptNode.jsExpress.jsMongoDBAngularJSPHPjQueryMicroservices DevelopmentFirebaseLAMPWeb DevelopmentGolang
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Discover More API Developers in the Toptal Network
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2

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Get a shortlist of expertly matched API developers within 24 hours to review and interview.
3

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Trusted Talent Only

Our talent network is composed of thoroughly vetted professionals who ramp up quickly, function as essential team members, and deliver results.

Precise Matching

Precise Matching

Our experienced talent matchers specialize in identifying talent that fits your needs. They work to understand your exact requirements and hand-select the best professionals for your project.

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Seamless Hiring

We handle all aspects of billing, payments, and NDAs, streamlining the hiring process so you can focus on innovation, not overhead.

No-risk Trial Period

No-risk Trial Period

We want to be sure your engagement is a total success, so we offer a no-risk trial period. Work with your new hire for up to two weeks and pay only if you’re satisfied.

Effortless Scaling

Effortless Scaling

We help you scale your team up or down as needed, with quick and efficient hiring in under 48 hours.

Flexible Engagements

Flexible Engagements

Our flexible engagement models allow you to choose the engagement type that suits your needs and adjust it anytime: hourly, part time, or full time.

Our Developer Screening Process

26.4%Applicants Pass

Language and Personality

Toptal developers possess excellent written and verbal communication skills. We test each candidate’s ability to convey complex technical concepts clearly across multiple collaboration tools and communication mediums. We also assess personality traits, looking for candidates who are passionate and fully engaged in their work.

7.4%Applicants Pass

In-depth Skill Review

Developers are required to demonstrate their knowledge and problem-solving ability through various assessments. We evaluate candidates based on their specialized work experience and knowledge of core technical domains, such as algorithms, data structures, system design, software engineering fundamentals, and more.

3.6%Applicants Pass

Live Screening

Toptal developers are skilled at tackling complex technical challenges creatively and independently. Each candidate participates in a live screening with one of our top developers, where they must demonstrate their ability to analyze technical challenges, propose multiple solution paths, and make decisions in real time.

3.2%Applicants Pass

Test Projects

Toptal developers are required to complete a test project that reflects real client work. During this step, candidates demonstrate their ability to ideate, scope, implement solutions, and solve complex technical problems in real-world scenarios.

3%Applicants Pass

Continued Excellence

Toptal developers are expected to maintain a strong track record while working with clients. We continuously evaluate our talent throughout engagements to ensure our high standards for excellence and performance are consistently met.

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Why Organizations Choose Toptal®

Toptal gave us access to the best designers out there, saving us a lot of time and allowing us to build the best possible product.

Thierry JakircevicGeneral Manager, Digital Solutions, Bridgestone

Toptal’s talent is really excellent. They are able to work through large business problems and code incredibly efficiently.

Emily LemonSenior Director, Cleveland Cavaliers

The kind of people we looked for were hard to find. Toptal helped us achieve our goals by bringing high quality resources to bear on very short notice.

Elmar PlatzerDigital Transformation Leader, CSR

If you’ve tried working with other vendors, Toptal is going to be a different type of company to work with; they’re going to meet you where your needs are.

Matthew SchumacherSenior Product Manager, Alpha - Precision Drilling

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