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


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 4.64.

Last updated: October 1, 2015
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William Hong

William Hong

On-demand Web Data Extractor,Web Bot,Data Extraction

China - Tests: 1 - Portfolio: 2

We provide Web data extraction service and products. It takes unstructured data from web html pages and converting it into structured records. The database format could be Excel, CSV, Access, MSSQL, and MySQL. Our leading Web screen scrapping service obtain any contents from any website pages,APIs,RSS under your instruction and send result directly to you in format you require. Or develop web crawlers for you based on our leading web data mining technology and our robust application code base in several days. Web2DB on-demand Data Extractors : Price Grabbers, Craigslist Crawlers,Yellowpage Data extractor,Google Data Extractor,Youtube Data Extractor,Ebay Data Extractor, Business Directory Data Extractor,Daily Deal Aggregator, Whois extractor,Web forum post/populate bot etc.

100% Job Success
$16.67 /hr
5,973 hours

Terence Taih

Terence Taih

Senior Java Developer

Vietnam - Tests: 2 - Portfolio: 1

I'm a Senior developer with more than 5 experience years on enterprise-grade development. My strongest skill is Java. I have worked with many Java framework from web to database. - Web: Play framework, Tapestry framework, Struts, Spring MVC. - Database: Hibernate (MySQL), Hector (Cassandra), Morphia (Mongo), Redis - Cache: Hazelcast, MemCache. - Search: Elastic search, Apache Lucene - API: Resteasy, Jersey - Beside them, I usually work with: Linux, Jetty, Tomcat, JBoss, Nginx, Amazon EC2, Amazon S3, Amazon CDN, OAuth, Restful API, Web service, Json processing (org.json, jackson) - And have worked with (administration and query ) both database SQL (MSSQL, MySQL, ...) and NoSQL (Cassandra, Mongo, Redis …). About another language, I can code with Nodejs well. I already build project with Nodejs, express and MongoDB. I'm looking for long-time contract, in challenge/interesting project, get exciting experiences to archive my dream: To become an excellent software architect. I will try my best to perform projects, meet all requirements and believe on making customers satisfied.

96% Job Success
$15.00 /hr
218 hours

Alexander Kozlov

Alexander Kozlov

Top level professional Architect and SW engineer

Russia - Tests: 21 - Portfolio: 5

Make things done! I'm a professional C/C++ developer with more than 12 years of experience. I have been working both for a companies from Fortune 500 list, and a small local companies. My core competency lies in the world of mobile applications, SaaS and PaaS, desktop software and games development. I love to do my work right and really enjoy being respected for the things i do.

96% Job Success
$55.56 /hr
1,772 hours

Naveed S.

Naveed S.

Software/Web/Mobile Development, 3D Animation, WebGL, Cesium

Pakistan - Tests: 1 - Portfolio: 84

I am Enthusiastic & Keen. . . . . Analytical mind, Good communication skills, creative, constructive, original thinker. . . . Confident & Quick dedication, Action responsible. . . . . Like to assign challenging job involving important results regarding imaginative solutions.. . . . . Ability to work under deadlines. I have 15 years of experience in software/mobile/web design and development. I have expertise in design and development of mobile applications (iPhone/iPad, android, blackberry and windows phone), web applications, websites, desktop applications and 3D design and simulation/animation. I have skills in cesiumjs, webgl, html5, css3, bootstrap, javascript, jquery mobile, yui library, rss feeds, RESTful api, sencha touch, extjs, sencha animator, phonegap, graphics, andriod development, andriod sdk, iphone sdk, objective-c, xcode, photoshop, c++, java, jsp, php, mysql, flex, ruby on rails, arcglobe, arcgis. Also I am a guitar player and a musician.

Groups: BoonEx, concrete5...

83% Job Success
$20.00 /hr
1,838 hours

Joe Caffe

Joe Caffe Agency Contractor

4300+ Hours - Expert Mobile App Programmer

India - Tests: 7 - Portfolio: 12

★★★ Client satisfaction and quality of work is more important. ★★★ Always provide best suggestion. ★★★ Difficulties not matter for me always matter how to provide best solution of signed task. With 7 years of experience of mobile application development on Android mobile/Tablet and IPhone/iPad. I am problem solver with intelligence. I think out of box and creative, persuasive, I am looking for projects to apply those matches my experience. I worked on many complicated projects. My skills : -------------------------------------------------------------------- • Objective-C, Java, Xcode6, Eclipse, Cocos2d,Cocos2dx • Android 4.4,IOS 8 • Location Base Services,GPS,Google map • Google Local API. • Web services: JSON/XML, • Core Data, Sqlite • Push Notification. • Implementation of custom Calendar, SMS/Email • Camera Customization • Integration with Third party APIs • Good Experience with Social Media Apps. • Expert level experience in in App purchase, paypal, Other payment APIs • Awesome Experience helping clients with Wireframe and Axure tool. • Experience in Hadoop and no SQL Databases. My Strength over Following for both platform IOS as well as Android: --------------------------------------------------------------------------------------------- • Bar code & QR code recognizing apps • E commerce apps • Travel Apps • Health & Fitness Apps • Dating Apps • Social Networking Apps • Music Apps • Photo & Video App • Photo Editing Apps • Video Streaming Apps • Medical Apps • Financial Apps • Educational Apps • Geo Location Tracking Apps • Food Ordering Apps • Restaurant Apps • Taxi Apps • Sports Apps • Reservation Apps • Messaging/Chatting Apps • Weather Apps • Business Apps • Real Estate apps • Life Style Apps • Entertainment Apps Personal Strengths: --------------------------- • Curiosity • Love of Learning • Integrity/Genuineness/Honesty • Spirituality • Perseverance/Diligence • Attention on Details Looking for long term relationship!! Best Regards, Joe Caffe

Associated with: NetSet Software

86% Job Success
$15.00 /hr
4,353 hours

Seeraj A.

Seeraj A. Agency Contractor

Business Development Manager

India - Tests: 1 - Portfolio: 46

I believe in team-work. As a team we want to be one of the best Software Services providers globally and customer satisfaction is our primary goal. We not only develop projects but we also provide free consultancy to convert your ideas in profitable business models. Our team consists of 22 highly talented software engineers and graphics designers. Resources work on 1 project at a time so that we could give 100% to each of the projects we undertake.

Associated with: Alcanzar Software Solutions Pvt. Ltd.

$22.22 /hr
0 hours

Darpan Dalal

Darpan Dalal Agency Contractor

Fullstack Developer with 15yrs of Experience.

United States - Tests: 2 - Portfolio: 10

I am Expert Web Developer with proven gamut experience of more than 14yrs Web Technologies VB/.net Development - C#,, VB.Net, VB,Java (Core Java JMF)/ J2EE program - JSP, Servlets, Struts, EJB, JSF, Hibernate,Web 2.0 - AJAX, RSS, XHTML, CSS Mobile Technologies Iphone , J2ME, Brew, WML ,android Open Source Application PHP, Perl-CGI, C, C++ Database Applications MYSQL, MSSQL, Oracle, MS-Access, PostgreSQL specializing in Ecommerce, WooCommerce sites,wordpress,HTML5, and CSS3

Associated with: Creative Mantra

$27.78 /hr
0 hours

Shoaib S.

Shoaib S. Agency Contractor

Turn your ideas into reality

India - Portfolio: 61

Started my career as a freelancer and now I have set up my own Web development office. 58% repeated clients, 100% - Recommended with 5* rating. Our Speciality - Magento development, Wordpress development. Responsive designs.

Associated with: Thinktrek Websoft private limited

88% Job Success
$15.00 /hr
93 hours

Nik Vashenko

Nik Vashenko Agency Contractor

iOS / iPhone / iPad / Objective C / Java / Android / Mobile Developer

Russia - Tests: 10 - Portfolio: 5

Over the past 8 years, I've achieved mastery of C, C++, Objective C, Cocoa, Cocos2D, SQLite. Currently I am studying Android, Java, Titanium and Sencha Touch. I have used swift, Core Data, AFNetworking, RestKit, GCD, Core Animation, Core Graphics, Core Text, Core Location, and MapKit in my projects. I worked a lot with, Google Analytics, Fabric, JIRA, Trello. My core competency is complete end-to-end management of mobile application development projects. My clients have primarily been startup companies and very large agencies; I have worked for a lot of big companies as well as the F500 incl I know how to get your project done across the finish line, and how to refactor and scale your projects without throwing out the whole codebase. I have all necessary devices to develop and test your application: All iPhones and iPads, a lot of Andoird phones and tablets, iMac. I understand how important trust, communication and deadlines all are. I'll be glad to help you. Best regards, Nik.

Associated with: Lodoss team

100% Job Success
$35.00 /hr
5,117 hours

Andriy K.

Andriy K.

Expert Android Developer

Ukraine - Tests: 9 - Portfolio: 32

✔ Upwork All-Star Freelancer Club member! ✔ Upwork Verified Mobile Developers Club member! ✔ Upwork Top Rated! ✔ Oracle Certified Professional - Java Over the last 4 years, I have successfully developed over 25 complex Android Applications from scratch on my own. My Java skills are confirmed by SCJP (Sun Certified Java Programmer), passed with 98% score. Excellent knowledge of Java and extensive experience in Android allow me to make quality and high-performance applications. Almost all applications and games that I made hit the Top 100 in the Nook Store, even a few hit the Top 10. Very good knowledge of OOP, OOD, Design Patterns, excellent problem solving and decision making skills. I have rich experience in the major components of Android, such as: - UI : Custom components, Fragments, Layouts, ActionBar, 2D Animations, Material Design, Dialogs, Menu, User Interaction(touches, gestures) - Core : Intents, Services, Receivers, Content Providers, Custom Adapters, Resources, Multithreading - Communication & Networking : HTTP, REST, Parse, Socket, JSON, XML, SMS, Bluetooth, Bluetooth LTE, iBeacon, NFC - Hardware and Media: GPS, Google Maps v2, Speech Recognition, Playing Audio/Video, Sound, Playing Sound Effects, Accelerometer - Persisting Data: SharedPreferences, Files, SQLite, Backup and sharing data - Interacting with System: Notifications, Alarm Manager, Timed and Periodic Tasks, Persistent Background Operations, Contacts, Calendar, Task Stack - Graphics: Canvas, OpenGL, OpenGL ES (libGDX) - Social: Facebook, Twitter, Google+, Instagram, LinkedIn , Foursquare - Analytics: Woopra, Google, Localytics. I also have experience in developing Web Applications on J2EE platform. Core technologies and frameworks involved were Spring, Spring MVC, Hibernate, JPA frameworks; JSP, JDBC, HTML, XML, JSON, REST, JavaScript(jQuery, AngularJS), AJAX. My skills are confirmed by SCWCD (Sun Certified Web Component Developer) certificate.

Groups: Sun Certified Professionals

100% Job Success
$44.44 /hr
10,350 hours