API Development Professionals & Consultants

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API Development Job Cost Overview

Typical total cost of Upwork API Development projects based on completed and fixed-price jobs.

Upwork API Development Jobs Completed Quarterly

On average, 377 API Development projects are completed every quarter on Upwork.

377

Time to Complete Upwork API Development Jobs

Time needed to complete a API Development project on Upwork.

Average API Development Freelancer Feedback Score

API Development Upwork freelancers typically receive a client rating of 4.66.

4.66
Last updated: May 1, 2015
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  1. Austen C.

    Austen C.

    Full-Stack Developer Of Scalable, Beautiful Web Apps, MVPs & More

    United States - Last active: 18 hours ago - Tests: 2 - Portfolio: 4

    Hi, Many come to oDesk/Upwork looking to hire a cheap programmer to quickly throw together a piece of software. I'm the person you come to after you've worked with cheap programmers, spent tons of money anyway since your project took way longer than expected, and you've just realized that the software you ended up with is a house of cards because it is full of bugs and built on a poor architecture, leaving you with something that you can't scale or maintain, let alone build upon to add the valuable features that your users are requesting. Or, I'm the person that you come to in the beginning to get started the right way, with a lean, scalable, fast, custom web application that you can grow 100x and easily adapt to meet your users' demands. Either way, I'm here for you. I'm Austen. I’m 29. I’ve been a software engineer and entrepreneur all of my life. Every day, I build custom web applications for myself or other people. -------------------------------------------------------------------- Things I Do Best: -------------------------------------------------------------------- • Full-stack javascript development • Exceptional graphic design. • Finance and fundraising for start-ups. • Be a stand-up individual that works tremendously hard to create value for you, and bring you success. -------------------------------------------------------------------- Services I Offer: -------------------------------------------------------------------- ** I Build Web Applications (MVP / Prototype / SaaS) ** First and foremost, I build immensely scalable, maintainable, beautiful web applications that operate at the lowest possible cost. I do this every day, for my own start-up or for other peoples' start-ups. If you are looking for an AWESOME Minimum Viable Product/Prototype, which can easily scale to meet a growing user base, I can build it for you. Since, I’ve done this so much, I even have my own starter templates that help me build scalable and cheap prototypes as fast as possible (https://github.com/servant-app/JAWS). ** Hourly Consultations ** Often, I get requests for advice from people looking to build a piece of software for their existing company or for a new start-up. They usually want to know how to proceed and which tools to use. So, I tell them. This involves a long phone discussion and then I spend a couple hours clarifying my suggestions in a Google document, which the client keeps for reference. When I started building web start-ups, I did not have access to people who could give me clear advice. So, I enjoy doing this for others, and give the best and most actionable advice I can. If you don’t want to hire me because of my price, that’s fine. I can at least inform you what to look for in a developer, and even write up an oDesk proposal for you. Also, if you are considering hodgepodging existing tools together because it looks deceptively simple (e.g., Wordpress + plug-ins), please talk to me first! If you have already hodgepodges something together and have now realized it’s breaking, it’s incredibly difficult to fix, you can’t pivot to meet your customer’s demands and you need to transition, please contact me, I can help you. ** Building/Consuming REST APIs ** This is the era of web APIs. My own start-up is a powerful API-As-A-Service start-up. I can build out a scalable REST API for your company. ** Other Stuff ** I like doing other stuff, if it’s interesting. But the services above are what I'm best at. -------------------------------------------------------------------- Technologies I Use: -------------------------------------------------------------------- • Javascript • Node.js • Express.js • Restify • DynamoDB • MongoDB • PostgreSQL • Redis • Github / Git • AWS Lambda • AWS EC2 • AWS Elastic Beanstalk  • AWS S3 • AWS Cloudfront • AWS SES • Heroku • jQuery • Angular • React • Gulp • Nitrous.io • Photoshop • Illustrator • After Effects • Stripe API • Google APIs / Google maps / All of Google’s API • Twitter API • Facebook API • Twilio API • Tons of APIs! • Mailchimp • Mandrill • Web scrapers • Various CMS systems • & More! -------------------------------------------------------------------- More About Me: -------------------------------------------------------------------- I live in Oakland, California where I work part-time on my own start-up (https://www.servant.co). Building a business takes a while, so I work 4+ hours/day on oDesk to help pay the rent. So far, I've had only a few clients because they have not let me go. One of my oDesk clients even became an investor in my company :) Contact me, I'm always available :) Let's build something awesome! Kindest regards, Austen Collins

    $78.00 /hr
    699 hours
    4.96
  2. Kunal C. Agency Contractor

    Expert in SMS, Twilio, Nexmo, PHP, Asp.net, Web development & design

    India - Last active: 18 hours ago - Tests: 1 - Portfolio: 17

    Over 8 years of experience. Developing and providing solutions for Bulk sms website software, Text messaging software, PHP, Asp.Net, Wordpress, Android, C#, HTML, CSS, Photoshop, JQuery. Twilio, Nexmo, Trumpia wlw design, 2 way sms web apps, Internet mobile marketing, SMS to E-mail, E-mail to SMS, SMS scheduling/recurring, Keyword campaigning, Group messaging, Manage contacts, Web Designing, Volusion Ecommerce, Paypal integration, white label site design, sms gateway integration, responsive mobile websites. and Twitter, Facebook integration.

    Groups: Twilio

    Associated with: Xpertech Technologies

    $11.11 /hr
    450 hours
    4.97
  3. Yorye N.

    Yorye N.

    C# Software developer, Scraping and automation expert

    Israel - Last active: 24 days ago - Tests: 11

    C#, .Net, ASP .Net, HTML, Javascript, web site development. Specializes in scraping data and automation tools (bots) for both web and desktop. I am a programming course graduate, served in the military as a programmer. Expert of the C# language. Please, DO NOT send me job offers that deal with uBot, AutoMate, Automation Anywhere, AutoIt or any of the alternatives. Those tools give me a headache - I prefer handling automation through actual code using C#. I've been also studying graphic designs and graphic designing concepts for three years, and have been working with Photoshop, Illustrator and Flash professionally. I will meet your expectations.

    $16.00 /hr
    151 hours
    4.64
  4. Sahil Madan

    Sahil Madan Agency Contractor

    Expert Mobile App Developer- iOS/Android/Window/HTML5

    India - Last active: 1 month ago - Tests: 2 - Portfolio: 2

    Self-directed and motivated Mobile Developer with 4+ years experiences in Objective C/XCode, Java, C/C++,PHP, JQuery, .Net technologies. Excellent at developing and maintaining client/server applications. I represent Finoit Technologies and In past 4 years I have developed a wide range of apps in Android,iOS and Windows platform. I have developed apps for different categories like Education Entertainment/Music/Social Networking Finance/Survey/Inspection Games/2D/3D/VectorWork/Simulation Health/Medical Lifestyle News/Magazine Productivity Transportation/Travel/Navigation

    Associated with: Finoit Technologies (I) Pvt. Ltd

    $15.00 /hr
    779 hours
    4.50
  5. rajni thukral

    rajni thukral Agency Contractor

    website designer and developer

    India - Last active: 18 hours ago - Tests: 7 - Portfolio: 19

    I have experience with website design and development using Wordpress, Html5, asp.net. I am working with latest technology.Evey time ready to accept new challenge and complete all with confidence. Every time provide my best to achieve my target. I am very passionate about my work and enjoy my freelancing career. I truly believe in "Customer is King" theory and always try to exceed my client expectations with quality work. I have strong experience in these : Asp.net ,C#,MVC4,Razor ,Sql Server,Entity-framework,Linq To Sql,AJAX,Web, Service,Jqeury,Vb.net,Google API,Payment API Best Regards, Rajni

    Associated with: Sp Web Solution

    $11.00 /hr
    253 hours
    4.99
  6. Kabindra Bakey

    Kabindra Bakey

    Freelance Ajax Based Wed Application Developer

    Nepal - Last active: 8 days ago - Tests: 6 - Portfolio: 3

    Over the last 5 years, I have developed a wide range of websites using HMTL, DHTML, PHP, and MySQL including sites for startup companies and small businesses. My core competency lies in complete end-end management of a new website development project, and I am seeking opportunities to build websites from the ground up for you or your business. I also have some experience in the following areas: SQL, Ajax, OOP, and software design and testing. Thank you for visiting my profile and I look forward to work with you in near Future. Best regards, Kabindra Bakey Gtalk: koolkabin@gmail.com Skype: koolkabin

    $16.67 /hr
    18 hours
    4.90
  7. Khushwant Dhayal

    Khushwant Dhayal Agency Contractor

    Expert Mobile App Developer | iOS | Android |

    India - Last active: 7 days ago - Tests: 3 - Portfolio: 6

    Self-directed and motivated Mobile Developer with 4+ years experiences in Objective C/XCode, Java, C/C++,PHP, JQuery, .Net technologies. Excellent at developing and maintaining client/server applications. I represent Finoit Technologies and In past 4 years I have developed a wide range of apps in Android,iOS and Windows platform. I have developed apps for different categories like Education Entertainment/Music/Social Networking Finance/Survey/Inspection Games/2D/3D/VectorWork/Simulation Health/Medical Lifestyle News/Magazine Productivity Transportation/Travel/Navigation

    Associated with: Finoit Technologies (I) Pvt. Ltd

    $15.00 /hr
    647 hours
    5.00