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

341

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: July 1, 2015
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  1. Mitulkumar G.

    Mitulkumar G.

    Laravel5 & Backend Expert + APIs, AngularJS, NodeJS

    India - Last active: 4 days ago - Tests: 2 - Portfolio: 5

    I have been working with startups since more than 4 years. I have worked with a product startup companies and built some really great products. Also I was an active participant in the product decisions like choosing technologies, product architecture, UI/UX etc. so I strongly believe in building really good products and in long-term & honest relationships. I am well versed in various technologies and since the world of IT is always evolving, I make my best efforts to keep pace with it. I have been leading a startups product teams for more than 4 years, thus I understand business requirements very well and can form the best solution which is requires. So when you need more than just a coder, who understands your needs very well and can put his own inputs on table to make product better as well as who delivers bugs free solutions, I am the one you can depend upon. Over the past 6 years, I got an experience of building great products from scratch with whole product ecosystem with strong backend and scalable architecture. I gained expertise in the following fields: - PHP - Laravel4 & Laravel5 - MySQL, MongoDB, Redis and much more databases. - Javascript, Ajax & jQuery - AngularJS - HTML & CSS, Bootstrap - NodeJS - MeteorJS - Flex, Adobe AIR & ActionScript3 - APIs Development & Integration - Product Customization - Project & Database Architecture Looking forward for your chance to work together.

    $33.33 /hr
    180 hours
    5.00
  2. Andriy B.

    Andriy B. Agency Contractor

    PHP | JQuery | Wordpress | HTML | CSS | C# | ASP.NET | SQL

    Czech Republic - Last active: 8 days ago - Tests: 5 - Portfolio: 5

    Over the last 15 years, I have designed and developed many turn-key solutions for small businesses using: - C#/ASP.NET and Microsoft SQL as a data warehouse - PHP/HTML/CSS/JS/jQuery and MySQL as a data storage I have huge experience with Wordpress CMS based development, third-party<->Wordpress integration, theme and plugin development skills. I have a lot of experience with different API and Services development and integration: - Web-Services (SOAP, XML, REST, JSON) - Payment Processors and billing solutions integration using PayPal API, Balanced Payments API - Map Interactions (Google Map API, Open Street Map API) - Web Data Extraction (Web Scraping) and Manipulation In addition, I have strong experience with database design and database programming for Microsoft SQL Server and MySQL databases. My core competency also lies in complete project management of a new development project, and I am seeking opportunities to create the software from the ground up for you or your business.

    Associated with: Softlogic Agency

    $25.00 /hr
    1,981 hours
    4.97
  3. Sarthak P.

    Sarthak P. Agency Contractor

    Expert WordPress (oDesk top 10), iOS, Android, PHP, Magento | 8+ years

    India - Last active: 1 month ago - Tests: 6 - Portfolio: 8

    Here's a quick snapshot of my skill set and experience- • 5+ years of WordPress [Top 10% on oDesk] • 5+ years of PHP, MySQL, jQuery, AJAX experience • 3+ years of iPhone OS and Android programming experience • 3+ years mobile application development • 4+ years of object oriented programming based development • Strong Grip on Xcode, Instruments, Interface Builder, eclipse • Possess intense knowledge of Objective-C, Web Services, XML, and JSON, Java • Passionate advocate of concise and simple code, designs and applications • Have experience in a light-weight, rapid turnaround engineering environment – agile specifically • Great SQL Skills working in MySQL, SQLite • Experience with consumer facing UI development My Experience I'm a Computer Engineer from India with passion and talent for my work. Over the last 5 years, I have developed a wide range of websites using PHP, MySQL, HTML, jQuery, Ajax, Javascript. The sites have been for start-up companies, medium and large business as well as for individuals. I'm very strong at OOP concepts and possess good knowledge of website designing and testing. My Qualities I ask questions whenever I'm not clear, I think out of the box and most importantly I WORK QUICKLY AND DON'T COMPROMISE WITH QUALITY. Once I have a project in my hands - I give my best. I believe honesty and good communication are most important for a successful collaboration and a long term relationship. I'm looking forward to your challenging project. :-)

    Groups: Bluehost Developers and Designers, LoadedCommerce

    Associated with: Pricus

    $20.00 /hr
    598 hours
    5.00
  4. Rajvinoth A.

    Rajvinoth A.

    PHP,Wordpress,Opencart,Cakephp,HTML,CSS, Mysql,JS,dotNet,C#

    India - Last active: 10/02/2014 - Tests: 6 - Portfolio: 9

    I am an expert web developer with over 9+ years of experience in Web Development includes Web Designing and Web Programming and finding suitable projects or challanging projects for my development team. I am specialized in PHP5 and My SQL.I’m proficient in many tools that i use html5,css3, Java Script XML and Ajax , CMS and languages (WordPress, Joomla and PHP). My mission is to provide high quality website designing, eCommerce solutions and web development, domain and hosting services that enable small and medium businesses to establish online visibility, increase sales, and improve productivity by developing modern eye-catching layout based websites. The area of my expertise is development of complex web applications, social networks, Online transactions, e-commerce solutions. My areas of expertise are: Web Developing System Analysis/performance tuning, Php, Mysql, C#, SQL, .NET, HTML 5, CSS, XHTML, UML, ASP.NET, VBScripting, UML, OpenCart, Wordpress, Paypal, Authorize.net, Payment Gateways, API Integration etc... Don't hesitate to reach us to explain your problems. You will get a perfect solution for your business processes.

    $19.99 /hr
    85 hours
    4.89
  5. Eric K.

    Eric K.

    US-Based Software Project Management & Web App Development

    United States - Last active: 03/04/2013 - Tests: 6 - Portfolio: 13

    **** Please DO NOT contact me if you are unable to allocate a reasonable budget for your project. Note that I am U.S based, and I have been working in the web industry for over a decade. I am posting this due to the countless inquiries I receive daily with insulting budgets and "bids" (ie. - $400 for a custom logic web app that would require over 100 hours of development). Should you require an estimate, please feel free to inquire and I can provide you with a reasonable quote, including both cost and hours broken down. Thank you for your understanding in the matter. ***** Hi, my name is Eric and I'm a Sr. project manager with roots in PHP development, as well as an entrepreneur with over a decade of expertise in the web & mobile development sector. I have extensive experience in working with mid to enterprise level companies on custom app development & corporate site projects, as well as management of large-scale web projects that require a team of expert creatives & developers. I've had the privilege of working with various established tech companies & startups over the years such as Accenture, Junk My Car, & Google. Through these positions, I've learned what it takes to create, deploy, and maintain intuitive, aesthetically pleasing web applications utilizing the latest web technologies. My passions within the industry are user interface (UI) design, custom PHP development, and enterprise level eCommerce builds. I also have an eye for the latest internet trends, while still being able to maintain a sense of originality in all projects that I lead. A few of the many web/IT skills that I specialize in are custom PHP MVC framework development (Codeigniter, Yii), MySQL database design/management, custom CMS driven web development (Wordpress, Expression Engine), Salesforce management/customization (including APEX development & advanced reporting), Unix & MS server deployment/administration, strategic UX & A/B testing, IP telephony (including Twilio API development; CTI/PBX), and enterprise eCommerce development (custom Magento development, including eBay integration). HTML5, CSS3, and jQuery are commonplace in all responsive front end projects that I've been a part of. Search engine optimization (SEO) is also a major skillset that I implement on a daily basis (both organic & PPC), and I'm an expert in utilizing/integrating SEOMoz & Hubspot. I've been creating & managing client Google AdWord campaigns for over 7 years now, and I am also an authorized Google Partner, as well as a Google Engage agency partner. My abilities in communication and project management are quite extensive, and I'm an advocate of implementing agile/SCRUM methodology & software. I'm familiar with efficiently utilizing kanban & burndown charts to increase productivity within development projects, especially when used in Pivotal Tracker or Jira. Much of my management skills have been acquired from running a successful development firm for over 5 years. Above are just a portion of the skills that I've acquired & mastered throughout my endeavors in the web industry. As this industry is ever-changing & evolving, I constantly strive to learn new web technologies whenever possible. I appreciate taking time out of your day to read through my profile, and I encourage you to view my portfolio on here as well. Should you have any inquiries or potential projects that you'd like to discuss, feel free to contact me with further details and I will get back to you as soon as possible. Thanks again, and I look forward to hearing from you! Eric K. Atlanta, GA

    $40.00 /hr
    1,178 hours
    5.00
  6. Sarge R.

    Sarge R.

    C++, CSharp .NET, Java Developer or Project Manager

    Belarus - Last active: 2 months ago - Tests: 4 - Portfolio: 2

    - Algorithms & Data Structures, Discrete Mathematics, Graph Theory, Performance Optimization ( http://ioi.eduardische.com/people/2056 , http://community.topcoder.com/tc?module=MemberProfile&cr=23291407 ) - Machine Learning, Natural Language Processing, Neural Networks, Data Science, Semantic Web - Project Management, Productivity Increase, Work Breakdown Structure, Automation, Definition of Standards - Web development C/C++, Java, C#, .NET, ASP.NET, WEB Services, XML, HTML, JavaScript, MATLAB, SQL, RDBMS, OLAP, Multithreading, Windows API, Project Management, Technical Design, Functional Design, Debugging, Profiling, Coding, Assembler, Caching, Amazon EC2, VMWare Virtual Machines, Data Mining, Dynamic Programming, Reinforcement Learning, Clustering, Logic, Programming Pearls and Best Practices, Mentoring, DOS, Batch scripts, SVN, Tortoise SVN, Rational ClearCase, ClearQuest, Visual Studio, Eclipse, Sun JVM, JRockit, Hudson, MySQL, MSSQL, RDF, Oracle Primavera Portfolio Management

    Groups: Application Developers Alliance

    $33.33 /hr
    2,583 hours
    4.99
  7. Waqas Ali

    Waqas Ali Agency Contractor

    Senior Java / JEE / SOA / Android / PHP Developer

    Pakistan - Last active: 5 months ago - Tests: 14 - Portfolio: 12

    Since 2008, I have developed a wide range of web applications using JAVA, JEE, SOA, Web Services, Spring, Hibernate, EJB3, JPA, Struts, JSF, AJAX, jQuery and WEB2.0 standards, Servlets, JSP, CSS3, HMTL5, Liferay, OpenESB, IBM BPM, Several open source libraries and APIs, Facebook and Twitter Integrations, DHTML, LAMP, and MySQL, MSSQL, CouchDB, Oracle. I have experience integrating with third party APIs and Web Services, Social Networks, LDAP, SVN libraries. I have experience in Online Payment Solution, Banking, Mortgage, Text Search, Product Data and Catalogs, POS and other portfolios.

    Groups: Application Developers Alliance

    Associated with: Softified Business Solutions

    $30.00 /hr
    961 hours
    5.00
  8. Althaf M.

    Althaf M. Agency Contractor

    Certified Web/Software Architect with 10 years experience

    India - Last active: 2 months ago - Tests: 15 - Portfolio: 7

    Experience : Experience in architecting and developing softwares for broad range of industries, including Building Management, Energy Management, etc. Have took part in many full SDLC projects and architected few Hybrid products. Well versed with the new paradigm shifts in programming and sound knowledge and experience in system level programming , as well as application programming - especially cross platform complaint solutions. Good linux admin skills as well as automation of many process using scripts. Through knowledge and practical knowhow on scalable web applications as well as web databases. Designed many e-commerce related portals from scratch and made scalable and user friendly approach in the solutions. Have a good overlook on the various aspects of product development and product management and also took part in and contributed to many product marketing strategy building activities. Decade long experience with various technologies and platforms make me learn more and make myself better utilized in various solution architecting and managing activities. Certifications : Certified Software Architect - Carnegie Melon University Certified Green Belt - Six Sigma Engineer (Process) Certified Scrum Master - Scrum Alliance (Agile) Programming/Scripting Languages : C++, PHP, JAVA,JSP,PERL, JAVASCRIPT, HTML5 , CSS2&3, Frameworks/Tools Used : QT using C++, JPA2 - Hibernate, Spring web-mvc, Spring data, Spring security , Spring web flow, Code Igniter, CakePHP, jQuery ,Backbonejs , Underscorejs, Knockoutjs, WebRTC - peerjs, SASS, LESS , REST, SOAP , RTSP, ffmpeg videojs etc. Servers Used , Apache(for php and mysql), Apache Tomcat for java, Glassfish Planning tools used : JIRA , CONFLUENCE, TRELLO, ASANA, Basecamp, Balsamiq Databases - Relational => MySql - Oracle Databases - NoSql => {'Mongo'}, /CouchDb, Solr My Strengths : 1. Quick Learner 2.Perfection (Altruistic) 3. Business Perspective Presently doing partial user experience designing activities - user interviews, Mockups, Card Sorting, Information Architecture, Persona Creation. TRAININGS HTML5, CSS3 and Java Script Training from Microsoft Microsoft training in Win8 Mobile Application Development. Startup Engineering, Standford Unversity Hadoop & Big Data Analytics, Edureka Data Scientist, University of Washington Spring Training from VMWare Mostly online through skype and hangout.

    Associated with: SecureBulls

    $30.00 /hr
    672 hours
    5.00