Browse API Development job posts for project examples or post your job on Upwork for free!

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
Clear all filters
  1. Zhang Hui Xia

    Zhang Hui Xia

    Expert iOS & Android developer

    China - Tests: 4 - Portfolio: 49

    Talented, experienced and dedicated mobile developer with 6 years of development experience. If you are looking for a highly skilled iOS & Android development expert with depth of knowledge, professional attitude, excellent communication and the highest code quality, I am the person you are looking for. I provide end-to-end solution which covers from Business Requirements Analysis, Design, Coding, Quality Testing, Deployment and also Enhancement & Maintenance. I've been developing various kind of mobile apps. Most of them were Social Networking Apps and they include Fitness App, Dating App, Photo/Video Editing Apps etc. As a freelancer, client's satisfaction and quality is the most important and I will bend over backwards for customer satisfaction. I love hearing from you. Zhang Liao.

    $45.00 /hr
    670 hours
    5.00
  2. lee daniel

    lee daniel

    3 Amazing Developer Apple Watch | iOS | Android

    China - Portfolio: 2

    Hi, Dear My Potential Clients! My goal is to make You Win in the IT world. With all of my competencies and creativity, I work hard to deliver an Excellent Competitive Solution to you. The long involvement in web development allowed me to have rich and deep insight into every aspect of web technology. My skill set is based on a strong combination of good education along with rich development experience and would be always up-to-date with new technologies. As a freelancer, my goal is to be a valuable developer who could add real value to my clients. Your SUCCESS is my SUCCESS! Let's WIN-WIN in IT world. I look forward to a long term relationship with you based on trust. Thank you for reviewing my profile.

    $38.00 /hr
    0 hours
    5.00
  3. 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.

    $16.67 /hr
    5,902 hours
    4.96
  4. Juan Bautista Cabral

    Juan Bautista Cabral

    Senior Python Programmer

    Argentina - Tests: 2 - Portfolio: 2

    Born in Argentina, working in python sice 2007. His main interest are: data mining, business intelligence and machine learning. I'm have my Mg Software Engineering degree from the Technological University in Argentina and my postgraduate degree in Statistics analysis from the National University of Córdoba. Actually I am PhD student and my research is about "machine learning and data mining for astrophysics database. The last 5 years i working as researcher in the UTN and we develop a new paradigm in analysis databases (http://getyatel.org) I work for many startups mainly in python an java always working i data analisis from diferent sources; probably this is the most interesting project of all is a plataform for create olap-cubes with videogames (http://playnfo.com sorry only in spanish)

    $30.00 /hr
    532 hours
    4.87
  5. 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.

    $15.00 /hr
    186 hours
    4.71
  6. Denis Jefimov

    Denis Jefimov

    Android / Javascript / Java / PHP / MySQL developer

    Finland - Tests: 8

    I have over 4 years of solid IT experience. My core competency lies in back end technologies like API development and/or integration and databases design. Having a business administration experience I'm able to contribute to project from technical and from business points. I love to expand the domain of my knowledge and work experience in any field. Areas of expertise: - Gathering and analyzing project requirements - Android App Development (Phonegap, Ionic) - JSON, XML, SOAP - Wordpress - HTML5, CSS - Oracle, MySQL, PostgreSql - Facebook API, SMS Gateway, Payment Processor - Java, Spring

    $25.00 /hr
    367 hours
    5.00
  7. Subbarayudu M.

    Subbarayudu M.

    BMC Remedy ITSM & ServiceNow Developer & Administrator

    India - Tests: 1

    Professional Summary  BMC Remedy relevant work experience of 9.8 Years in Development, Integrations with other applications, configurations and Customization of ITSM suite of applications.  Experienced in ServiceNow (SNOW) system administration, support & Development Experience in solution designing by following ITIL processes in ServiceNow and able to provide feedback on potential ways to translate functional into technical requirements.  ITIL Foundation Version3 certified from APM Group in Sep 2010.  Experienced in integrating ITSM with TPA using remedy Web Services.  Have done ITSM Installation of both version 8.1 patch 02 and 7.6.03, Midtier 8.1 and required database configuration; By solving all installation issues  Integrated Remedy with Network Fault Management system IBMTivoli Netcool Omnibus and have good understanding on Impact and Webtop functionalities.  Have got best hands-on/knowledge in configuring foundation data, asset management, approval engine, SLM targets etc. (using data management tool, AR Import & AIE)

    $20.00 /hr
    29 hours
    4.88
  8. Orest K.

    Orest K.

    Senior System Architect

    United States - Tests: 5

    I am a highly skilled senior developer with extensive development experience in system design, .NET technology stack including C#, ASP.NET, MVC, Web Api, SQL, Entity Framework. In addition I'm passionate about JavaScript and related technologies, namely AngularJS, Knockout, NodeJS, Express etc. I have Computer Science degree from one of the top Engineering school in US Few of my latest project listed below. Architected and implemented service oriented framework built on a variety of technologies including .NET, MVC , HTML5, ASP.NET Web API, Entity Framework,AngularJS, KnockoutJS, RabbitMQ, RequireJS and others. Designed and implemented Enterprise Single Page Application standards and led a team to successful project implementation using SPA. I have Computer Science degree from one of the top Engineering school in US. Please see my test score for my qualifications.

    $59.00 /hr
    407 hours
    5.00