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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, 332 API Development projects are completed every quarter on Upwork.

332

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 4.65.

4.65
Last updated: September 1, 2015
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  1. Jatin T.

    Jatin T. Agency Contractor

    AngularJS | Asp.Net MVC Expert | Enity Framework | Web API | LINQ

    India - Tests: 4 - Portfolio: 9

    Post graduated in Master in Science in Information Technology. I have 9+ years of experience in software design and development. During my on going tenure, I have worked for Large Scale Manufacturing ERP Project Development & Enhancement and also remained key player in developing product from SME companies. My hands on skill covers AngularJS, ASP.Net MVC, C#, VB.NET, MYSQL, MSSQL, API Development & Integration, Work Flow Services, WCF, LINQ, Entity Framework. I believe in robust and scalable architecture which yields long term profit for my client. I love to add value in product whenever I get chance. Client's budget and dead line is only the goal for the task I am given. Assuring you the timely & best service. Thank You. Best Regards, Jatin T.

    Associated with: TRIVENI GLOBAL SOFTWARE SERVICES LLP, Triveni Technologies

    $13.33 /hr
    4 hours
    0.00
  2. Adrian Kalbarczyk

    Adrian Kalbarczyk

    Webapp prototype builder

    Poland - Tests: 2 - Portfolio: 3

    Test your idea before spending thousands of $ on app development! I'm the author of Python and Javascript based full-stack framework that allows for building webapp prototypes in short time. Framework is battle tested and used also in big corporate projects such as collaboration software or CRM's. I helped tens of startups with validation of the idea, translating it into code and navigating the complexity of technology. #Bootstrap3 #Python #Javascript #websocket #amazon-aws

    $60.00 /hr
    0 hours
    0.00
  3. Mitul P.

    Mitul P.

    Full Stack ASP.NET | MVC | jQuery | API | WebService | CSS3 Developer

    India - Tests: 8 - Portfolio: 2

    With having working experience of 3 years, I have worked on both Windows and Web applications in .NET. But mainly involved with the Web Development. At the present, I am looking for opportunities to develop or enhance web applications. In addition, I am available for ongoing support and any other web development. Looking forward to participate in short or long term projects for Clients all over the world.

    $20.00 /hr
    0 hours
    0.00
  4. Loris Mazloum

    Loris Mazloum

    Agile Product Manager | Marketing and eCommerce Optimization

    United States

    I am fluent in both English and French. I live in Los Angeles, CA (PST timezone). If I apply for your job, it means that I know I can handle it easily, and it won't be a challenge for me to do. Time is valuable and I'm not looking to waste your time. I'm an agile project manager and SCRUM Product Owner. I can work alone, in a team or even manage your team using agile methodology. I have worked on a lot of projects, from the smallest ones, to ones that generated more than $7 millions revenue. I can help you with web and mobile development improvements, marketing, optimization and usability. If you have a product and want to improve it or get money out of it, I'm the person you are looking for. - Ecommerce (installation, setup, plugin / modules development, themes, configuration, automation ) * Prestashop * Magento * Shopify * Bigcommerce * Woocommerce * any other platforms - Marketing (campaigns creation, management, display, retargeting, remarketing) * facebook ads for websites, or mobile app installs, retargeting * twitter ads , twitter for mobile app installs, retargeting * adwords for search and mobile app installs * bing, yahoo * adroll, perfect audience for retargeting * mobile advertising platforms - email / push marketing * drip campaign * newsletter * event based emails / push * segment based emails / push - Analytics (setup analytics tools, setting up event tracking, goals, ecommerce tracking, segmentation) * event tracking * goals tracking * analytics dashboards * conversion rate, ROI, LTV and other important KPIs * web and mobile apps - Optimization * A/B testing optimization * Multivariate testing * Multi armed bandit testing * Landing page optimization I'm very good at following rules and procedures, but also love to give ideas and improvements suggestions if they are required and welcomed. As a bonus of my work, I will often find ways to improve the task that I have done, so you don't have to start from scratch every time you need this task done. Please contact me if you have any questions. Best regards, Loris

    $20.00 /hr
    0 hours
    0.00
  5. Muhammad Asif

    Muhammad Asif

    Php developer

    Pakistan - Tests: 2 - Portfolio: 1

    My vision is to work hard to satisfy the employer. I want to add some foreign currency to the reserve of foreign exchange of my country by earning at odesk.com. I have five year experience of PHP web development,, seo,web development,web designing and API development.I am hard worker and straight forwarding. I work hard till the employer become 200% satisfy.I believe in quality not quantity.If you hire me,I assure you that you won't be loser.I take my every job as challenge because challenge is the way of success.

    $3.33 /hr
    0 hours
    0.00
  6. Ryan Gyure

    Ryan Gyure Agency Contractor

    PHP Developer, Consultant, Start-Ups

    United States - Tests: 11

    Over the last 8 years I have developed a number of websites in HTML, PHP, and MySQL. Since a young age, I've been hacking away at code and coming up with better ways to do things. At the age of 14, I launched FusionXHost and created one of the first sustainable post2host web hosts. I have a wide range of skills working on a number of start-up companies and ideas. Since 2004, my company -- FXH, Inc -- has been providing a wide range of IT services all over the world and has severed as a springboard for a number of different start-ups. I have been the primary employee of FXH, Inc and generally do most of the work myself. I primarily focus on the technical side of start-ups and currently have an in-depth knowledge of PHP, MySQL, JSON, Zend Frame, RESTful APIs, and a number of popular third-party APIs (e.g. facebook, twitter, foursquare, etc). In addition to the coding side, I also work on server infrastructures using Citrix XenServer and Amazon Web Services. I also have experience with C-Corps, LLCs, and payroll accounting; both the state and federal filing requirements. I’ve been using Quickbooks since 2004 and very familiar with the software and accounting standards. In addition to the accounting, I’m familiar with the legal aspects of starting and running a company. I’m not an expert in these fields, but am a jack of all trades type and know enough in each area to be cost efficient.

    Associated with: FXH, Inc Agency

    $83.33 /hr
    0 hours
    0.00
  7. Matt Vaughn

    Matt Vaughn

    Principal Software Engineer

    United States - Tests: 1 - Portfolio: 1

    I build amazing software...right the first time. Period. I distinguish my process by communicating proactively with my clients and understanding their needs. I deliver what is expected and there are no surprises at the end of the project. I have over 15 years of technical and business experience taking concepts to reality for a variety of industries. As a hands-on developer I deliver high-quality solutions that increase and/or create product revenue immediately using Microsoft technologies like: .NET, ASP.NET, C#, Web API, and SQL Server. I use my creativity and diverse technical skills to build application solutions and frameworks that provide the real solution. I continue to focus on quality so that the end result is an extensible, maintainbable, and performant software solution. My most recent project includes building the backend for a mobile application. The backend includes Web APIs for mobile and web applications. This allows your web UI or mobile developers to focus on usability while I provide the implementation of the entire backend of the system. This includes the API, business logic, and business rule processing - and the implementation of the backend database. I can also provide technical guidance and/or perform the configuration, deployment, and hosting of the application so that it is ready to deliver the solution.

    $52.80 /hr
    0 hours
    0.00
  8. Tom Marius

    Tom Marius

    IT Product Manager/Analyst

    United Kingdom - Tests: 2

    My name is Tom and I'm IT product manager with 4 years of commercial experience with .NET development and 2 years of experience as a product or project manager. When you show me a problem, the first thing I see is a solution, because I'm interested in and working in the field for more than 12 years, since I was a small child. I'm natural leader who's able to come up with a solution quickly, using all available resources effectively. I love communication with people and I'm not afraid of conflicts. I'm not an "yes sir"-type of a person. Thanks to my long experience in IT, I know prices and timespans very well, easily able to see if the quality standard is high enough and due to my ability to see problems in advance I'm always at least few steps ahead. I know how to create project plans, how to correctly organize time of team members and how to communicate with them, how to set priorities and ensure the plan is met. I have experience with agile design-driven development of web, mobile, server and desktop applications. I'm looking for a remote job that would be a new challenge. I'm available every day during standard business hours and can work overtime if needed. I'm based in Western Europe (UTC or UTC+1 - I travel around the continent a lot). NOTE: I don't share full employment history here. Complete list is available on request.

    $65.00 /hr
    0 hours
    0.00
  9. Mike Kh

    Mike Kh

    Cheaf Technology Officer

    Canada - Tests: 2 - Portfolio: 1

    VISIT: www.youloox.com For more details. - Programming/Languages: C# - .NET Framework v 2.0-4.5, ASP.NET v 4.5, MVC 5, HTML 5, Razor, CSS 3.0, JavaScript, Java, SQL, XML, Visual Basic, Joomla, Delphi, Cross-Platform RESTfull Web Services, Web API, WCF - Frameworks: JQuery, Google/AngularJS, KnockoutJS, TypeScript, Ajax , Telerik, KendoUI, JSON, BSON - SQL Databases: MSSQL Server 2008-2014, MS Access 97 – 2010, MySQL, SAP Sybase, Oracle, PostgreSQL - NOSQL Databases: Graph DB, Hadoop, MongoDB, Neo4j, RavenDB - Design & IDE Tools: Adobe Photoshop CS5 - CS6, Adobe Dreamweaver CS6, Unity 3D - Software: Microsoft Visual Studio 2010-2013, MS Office, SharePoint, numerous Google – Microsoft and Apple solutions - Financial Software: Oracle, SAP, QuickBooks, Simply Accounting, Microsoft Dynamics GP - Operating Systems: Linux(Ubuntu,Debian,CentOS), Windows(XP, 7-8.1), Mac OS X, Windows Server 2003-2012R2

    $33.33 /hr
    0 hours
    0.00
  10. Alessandro Usseglio Viretta, PhD

    Alessandro Usseglio Viretta, PhD Agency Contractor

    Innovation and Strategy Consultant

    Switzerland

    I'm a keen follower of technological trends and founder of Fabnami.com, presently the most advanced e-commerce website solution for 3D printing service bureaus. My core competencies lie in data processing (machine-learning, statistics and application of big-data methods), software (architecture design, algorithm development, management, agile methodologies) and 3D printing, with particular regard to the processing and visualization of 3D data. I'm a Physics graduate with a PhD in Computational Neuroscience from the ETH - Swiss Institute of Technology in Zurich, rated as the best institution in continental Europe.

    Associated with: In Numero LLC Agency

    $90.00 /hr
    0 hours
    0.00