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: June 1, 2015
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  1. Tanmoy S.

    Tanmoy S.

    Web Developer | Android Developer

    Bangladesh - Last active: 20 hours ago - Tests: 13 - Portfolio: 2

    Greetings. This is Tanmoy, computer science graduate, basically a programmer working with Web & Android application development. Web Development: I've strong knowledge on PHP/MySQL/JavaScript and frameworks on those like WordPress and Joomla. For MVC, I worked with PhalconPHP, Laravel & YII. My expertise is mainly on WordPress and PhalconPHP. I developed at least 800 WordPress based website which included usage of different themes, plugins, custom theme & plugin development, custom field/meta/taxonomy/cron etc. I'm very skilled in REST API based projects. I can develop API platform for you with JSON/XML response or SOAP API. Android Development: I normally develop application (not games) for Android. I'm highly skill in SQLite Database, HTTP/HTTPS/Socket connection, File, Media, In-App Purchase, Google Play Licensing, Camera, Location, Sensors etc. based projects. I use Java instead of third-party tools to provide excellence. Social Login Integration: I provide social login integration service both for web and mobile application. For modern app, you must need it to engage more users. For my expertise, dedication and hard work, I always got great feedback from client. What you're still waiting for? Just hire me to get your project done.

    Groups: Application Developers Alliance, AWeber...

    $33.33 /hr
    1,622 hours
    5.00
  2. Leo J.

    Leo J.

    Engineer in Computer Science - Developer - Research

    France - Last active: 20 hours ago - Tests: 15 - Portfolio: 1

    Hello, I am a 27 years old engineer in Computer Science from France. After graduating from the Institut National des Sciences Appliquées of Rennes, I moved over to Sweden to follow a master program on Mobile Systems. Meanwhile, I was also working as a freelance web-developer/project co-leader for a Canadian company. While learning, I participated as a trainee to many professional project and learn to be flexible both in my ways of working in a team and on the technologies to use. Indeed, even so my major programming languages are Java and PHP, I could easily learn C# during my master thesis in Sweden and build up a nice piece of software to work with Sifteo cubes. Software architecture and system design are two of my strong background points, thus I thrive in realizing project from the beginning until the end. My professional experiences involved many non programmer and non computer scientist customers and allowed me to train establishing their needs and to translate them into sprints, backlog and deadlines. I also believe that knowledge in computer science without knowledge of the real world are wasted hence my interests for books, sail, roller-skating, ice hockey as well as environmental questions for instance. Looking forward to working with you.

    Groups: Application Developers Alliance

    $33.00 /hr
    433 hours
    4.96
  3. Jonathan C.

    Jonathan C.

    Consultant

    United Kingdom - Last active: 2 days ago - Tests: 1

    I have a UK university PhD, in Artificial Intelligence, and the business management skills to match, together With 15 years of Delphi, C++, Java, SQL, and Object-oriented analysis and design experience. I specialise in development including protocol specification, thread management, distributed communication and database transaction management. I have retro-fitted software in tasks ranging from installing improved modules to sophisticated Artificial Intelligence sub-systems. I can provide the often essential empathy with the contract holders, and the pragmatics to satisfy the demands of management. I have 20 years of competency in the software industry, and have a proven track record that will guarantee the successful realisation of your system requirements. I have designed and implemented systems used by multi-billion turnover corporations around the world, saving millions of pounds savings per year. My scope in system design and development ranges from individual utilities and embedded operating systems, through to large-scale corporation-wide distributed architectures. I am also able to provide a code debugging and fixing service, either onsite or online. I can give workshops and can facilitate training of new software developers, both in-house and online. I have managed my own team and maintained their skills matrices, ensuring training has been current. I have defined and managed new product releases and have written instruction manuals for new and "super" users at the customer end of the project.

    $105.56 /hr
    2,545 hours
    4.96
  4. Oleg Batishchev

    Oleg Batishchev

    Magento Jedi / Senior Web Developer / Consultant

    Russia - Last active: 2 days ago - Tests: 6 - Portfolio: 9

    Hello dear customer, Yes, I'm not wrong, cause after read that you will wanna to hire me ;) Well, now seriously ... I am a highly experienced web developer who has primary direction of activities in e-Commerce web-developing, in that case it's a Magento area. I'am an adept of Magento and if you don't know what is it and you wanna e-commerce site you have to contact with and I will explain how is Magento awesome. I have 3 years experience in Magento and 9 years total in PHP developing with an MVC, different CMS (Wordpress), frameworks (Yii, Zend) and other. I always stick to the coding standards and follow the best practices to provide seamless, readable and reliable code. Besides developing I have some administration skills to manage servers, automate routines and can improve performance of Magento backend and frontend as well. Also I can setup the server from a scratch. I prefer a stack for Magento consists of: Nginx, Php-Fpm, Redis, Apc, Mysql 5.5 (5.6) (Percona better), SOLR/Lucene/Sphinx. I prefer do not install any control panels but if required I would prefer ISP Manager 5 Lite. Magento related Experience and Services - Optimization, load improvements, speed up - Extension development and customization - Troubleshooting - Tweaks & tricks - Bulk importing. Do you have 100k products? It's not a problem - Store migration - AWS, Rackspace building an architecture of you infrastructure - Core upgrade - Magento recurring support - Bug/error fixing - Theme design and customization - Consultation - Code review I also have some basic skills in the desktop programming (C#) and some Photoshop skills. I'll be glad to new acquaintances and long-term cooperation. I have a team of developers and every day we are expanding. Just hard to write all things what I can do. I am easy learnable for new stuff (frameworks, custom systems, foreign code). My strong side is a backend developing and have a good knowledge of a frontend side: - HTML5/CSS3 - Bootstrap - jQuery - Ajax - WebSockets, Long polling - Prototype - ExtJS - Google API, Yandex API - many other things that I can't remember at this moment. Also in a less degree Angular, Backbone and other frameworks/libs. Communication Channel : Skype/Whatsapp/Email/Phone I have listed only a little part of my portfolio cause I have many jobs completed and I can't add every job to profile.

    $45.00 /hr
    1,164 hours
    4.98
  5. Daria G.

    Daria G.

    Back-end and front-end dev and photographer

    Ukraine - Last active: 1 day ago - Tests: 2 - Portfolio: 1

    I specialize on Ruby on Rails and front-end development. In spite of the fact I have got a degree in International Journalism and Translation, I worked as QA and IT Sales for total of 3 years (from 2008) and then moved to web development from Jan, 2012. I have performed both back-end tasks (from basic CRUD to making simple APIs or server scripts) and front-end (building static websites from scratch or developing views with twitter-bootstrap). I believe the experience is formed with the quality of the projects, you have delivered, and not with the years of sitting in front of the laptop. Specialties: ruby 1.9.2+, Ruby on Rails 3.0+, linux and MacOS X environment, unix-shell, Git, SQL (SQLite, MySQL, PostrgeSQL), HTML, Haml, CSS, Sass, Less, twitter-bootstrap, javascript, jQuery Here is link to my github profile: https://github.com/amseledka I do photographs and various design tasks in my spare time, as well as help my friends with Russian-Ukrainian-English translations. My flickr profile: http://www.flickr.com/photos/37859578@N06/

    $33.33 /hr
    1,803 hours
    4.61
  6. Tornike Tvalavadze

    Tornike Tvalavadze

    Planing, Design and Development of iOS Apps

    Japan - Last active: 20 hours ago - Tests: 1 - Portfolio: 8

    My name is Tonriké, or Toto for short. I'm independent freelance iOS developer and designer based in beautiful city of Kanazawa in Japan. I help companies and entrepreneurs to plan, design and develop iOS applications, usually — from scratch. This covers everything from information in-take, analysis and architecture to application prototypes, user-interface design and software development. I also offer those services separately; however, I will not do UI design without comprehensive UX consulting. Technically, my skill-set covers anything from iOS Foundation frameworks to advanced topics like image processing and digital signal analysis. I already develop and help community to research Swift Language and latest Apple technologies. My experience as iOS developer starts right after iPhone SDK was debuted in 2008. Fascinated by product design and information architecture, I also started to design user interfaces and planing software products in 2009. In 2013 I was offered to teach "User Interfaces for Programmers" in Caucasus University in my hometown, Tbilisi, Georgia. That's what I did and as result, ended up creating whole syllabus which is still in use by university. I'm also fluent with many other technologies around those languages: Ruby, JavaScript, Go-lang. I charge what I charge because I'm one of the best in business, and results I provide are not disposable. "Fire and forget" is not my style of working and many returning clients are prove to that. I do not accept "I need Instagram clone for $1000" jobs, those are for scammers and "developers" desperate to ruin their reputation for little money. In short: If you want high quality, fully-working, maintainable and well-planned product with pre-development consulting and proper design, than contact me.

    $80.00 /hr
    878 hours
    4.99
  7. Marcin K.

    Marcin K.

    Senior Software Engineer / Python / iOS

    United Kingdom - Last active: 1 day ago - Tests: 2

    I run a tech consultancy and I'm working from Bali, Indonesia (UTC +8). I use Python and Django for backend and APIs, Objective-C for native iPhone apps, Vagrant for setting up dev environments. I also have some experience with front-end (JS, HTML, CSS, Bootstrap) and data analysis/machine learning. I’m a quick study problem solver, I do what’s necessary to accomplish tasks. 8+ years commercial experience in tech as a developer, ux and graphic designer. Summary: - Python, Django, Flask, Tornado, Django-Rest-Framework, SQLAlchemy, py-test, factoryboy - iOS 7, Objective-C, ReactiveCocoa, AFNetworking, RestKit, CocoaPods - HTML, CSS, Bootstrap, JS (jQuery, Backbone) - LAMP, Heroku, AWS, MySQL, PosgreSQL, Redis - architecture, design patterns, best practices - git, mercurial, svn - continuous integration - lean, agile

    $38.89 /hr
    910 hours
    5.00
  8. jun lee

    jun lee

    iPhone App developer

    China - Last active: 1 day ago - Tests: 4 - Portfolio: 4

    I have expertise in iOS & Android app development using Native iOS SDK, Android SDK, Watch Kit. My Services: -iPhone applications development -Android applications development -Apple Watch applications development -Database development -Web service development My current focus is on Mobile app for iPhone, iPad, Android and Apple watch. I firmly embrace the fact that agility and flexibility are the keys to creating innovative technology. Your business will be my business , Your success will be my success ! Thanks

    $35.00 /hr
    0 hours
    5.00
  9. Hamdan A.

    Hamdan A. Agency Contractor

    Experienced Web Developer

    Palestinian Territories - Last active: 4 days ago - Tests: 4 - Portfolio: 5

    My objective is to find a long term contract with a company who needs a rock-solid PHP/LAMP programmer. I have been a key contributor for several high-volume e-commerce websites over the past 10 years. My work has included open-source PHP5+ frameworks, such as CodeIgniter and Laravel. I am guru-level in HTML, CSS, Javascript, AJAX and Jquery, various payment gateways such as Authorize.net, Paypal, Plimus as well as other CMS and e-commerce systems including WooCommerce, eCommerce and BigCommerce. I also have experience administering Apache, Nginx, SVN, MySQL, Linux, SSL, etc... My strengths are innovative thinking, resourcefulness, flexibility to accommodate your time zones, efficient code and ability to solve the most difficult tasks using the simplest solutions. Here is a list of all skills that I am very good at: ✔ Native PHP Development , Organised , OOP , and Commented clean code. ✔ WordPress: WooCommerce, BuddyPress, bbPress, Genesis, OptimizePress, ClassiPress, Thesis, PageLines, Gravity Forms ✔ e-Commerce: Woocommerce, Magento, Prestashop, OpenCart, Shopify, BigCommerce, Spree ✔ Front-end: HTML5, CSS3, SASS/LESS, Bootstrap, Javascript, jQuery, Angular. ✔ Node: Express, Meteor, Sails ✔ Python ✔ blade , Jade , Smarty ★ love Your Work means You Are Special ! ★ Available to work on big projects, on-going projects , and quick modifications. Please feel free for a friendly talk

    Groups: Bluehost Developers and Designers, Corona Labs...

    Associated with: PalPHP

    $40.00 /hr
    450 hours
    5.00
  10. Dhaval S.

    Dhaval S. Agency Contractor

    Android,iOS native/hybrid apps, javascript/cordova/parse

    India - Last active: 23 days ago - Tests: 9 - Portfolio: 15

    Developed native and hybrid apps on Android and iOS. Please visit http://dhavalsharma.com to know more. Also have developed in java, objective-C, GWT, python, django, jquery development on Linux, Google App Engine,android and iOS platform. I have developed applications in extjs/sencha touch. I have also done workflow automation using Google Apps Scripts in Google Spreadsheets for multi-location distribution and aggregation of reports.I also have extensive IT experience in delivering and executing IT based solutions and projects for over 16 years on multiple technologies and platform for global clients.

    Groups: Android

    Associated with: greenwalk

    $33.99 /hr
    2,383 hours
    4.59