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

334

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: July 1, 2015
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  1. Trevor Daniel

    Trevor Daniel

    28 years of software development experience.

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

    I am a full-time Elance software developer with 28 years experience. I specialise in developing and using APIs and building custom tools that move data between them.

    $55.00 /hr
    1,119 hours
    4.97
  2. Peter B.

    Peter B.

    Cloud Technologist: AWS & NetSuite Expert

    United States - Last active: 3 months ago - Tests: 3 - Portfolio: 1

    I have been in software development, networking and technical management for over 18 years. I can implement your AWS Auto Scaling fleet, build and host an API integrating your existing web services with NetSuite, and build you a custom solution to your biggest technology challenges. I worked for Amazon Web Services for more than 2 years as a Software Development Manager for EC2, and interacted with teams working on S3, SNS, RDS, SQS, ElastiCache, EBS, CloudFront, DirectConnect, EC2 VPC, Route 53 and more. I have worked with and still interact with the people that make AWS tick and grow. You can trust me to bring my first hand knowledge of the inner workings of AWS to help your business succeed. I've spent several years building and customizing NetSuite. I've gone deep with Javascript and the nsAPI calls in SuiteScript. I've integrated external systems and APIs into NetSuite, optimizing workflows and saving employee time and overhead. I look forward to learning about you, your business, and what projects you are working on to help build your success.

    $175.00 /hr
    0 hours
    5.00
  3. Wallace Ferreira

    Wallace Ferreira

    Software Analyst/Developer

    Brazil - Last active: 1 day ago - Tests: 10 - Portfolio: 2

    Hello, my name is Wallace. I've been working with software development for over 9 years. I acquired a lot of experience developing applications using Visual Basic, C/C++, PHP and Java. My expertise is analyzing and developing Desktop and Web Applications such as: + Crawlers/Web Crawlers - Collecting and storing data from sites, documents, videos, photos, social media sites, classified ads sites, etc. + Web Data Scrappers - Extracting, parsing, filtering and storing relevant data from web pages to readable and manageable formats like Excel, CSV, HTML, etc. + Bots and Automation scripts - Extracting and making business decisions out of data from documents like PDFs, Excel, CSV, XML, TXT, etc. - Sending email reports automatically - Auto filling forms - Price comparison apps - Event notifiers + Data conversion/transformation - Transforming/Converting data between formats for import/export in different applications. - Feed generation - Report construction + API development/integration - Adding support for third parts services - Creating interfaces for communication between systems. I have developed dozens of applications for a wide range of application domains including: - E-Commerce sites (like Amazon.com, Walmart.com, ToysRus.com, etc) - Financial market - Market research groups - Medical related groups - Shipping companies - And several other personal applications. Some formats I have expertise in are: - JSON - XML - SQL - CSV - PDF - TXT - HTML - XSL - XSLX - And others Acting as an analyst and developer, I gained experience with modeling relational databases and SQL, with a focus on MySQL DBMS. Since 2009, I have been working for a company that develops software for the financial market - EconoInfo (http://www.econoinfo.com.br). In 2012, I graduated in Computer Science at the Pontifical Catholic University of Minas Gerais - PUC Minas. Over the past four years, I specialized in Java development, especially Java EE 6.0, focusing on technologies EJB, JPA, JSF, JMS and JCR. Acting as an analyst and developer, I gained experience with modeling relational databases and SQL, with a focus on MySQL DBMS. As a developer in charge of creating the EconoInfo website's interface, I also specialized in Servlets, HTML, JavaScript and CSS.

    $27.78 /hr
    961 hours
    4.95
  4. Terence Taih

    Terence Taih

    Senior Java Developer

    Vietnam - Last active: 11 days ago - 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
    4.69
  5. Chris H.

    Chris H.

    Web Developer (ASP.NET | MVC | AngularJS)

    United Kingdom - Last active: 20 hours ago - Tests: 6 - Portfolio: 6

    Microsoft Certified Solutions Developer with over three years’ programming experience using .NET framework to deliver web and desktop applications. I’m a passionate C# developer with extensive knowledge and experience with: - ASP.NET back and frontend development, including WebAPI 2, MVC 5 - Client side scripting, JavaScript, jQuerry, AngularJS, Knockout - Clean and SEO-Friendly HTML5 and CSS - Task automation using Poweshell scripting and C# applications Committed to designing up to spec, reliable and extendable solutions. Focused on delivering quality work on time and within budget. Always open for communication. Highly flexible, independent contractor that will get the job done for you.

    $20.00 /hr
    199 hours
    5.00
  6. Justin F.

    Justin F.

    PHP Developer

    Philippines - Last active: 1 day ago - Tests: 1 - Portfolio: 7

    For 3 years, I developed websites using HTML, CSS (Twitter Bootstrap), Javascript (jQuery), PHP (CodeIgniter and Laravel Frameworks) and MySQL. My expertise lies on strong communication skills, great foundation in programming and the ability to manage, adopt and learn fast for benefit of the new website development project. So I'm looking forward for more opportunities to build websites for you or your business. Other skill set are: AJAX, OOP, Api Integration, AngularJs, Wordpress

    $13.33 /hr
    2,810 hours
    5.00
  7. Dejan Noveski

    Dejan Noveski

    Software engineer

    Macedonia - Last active: 1 month ago - Tests: 3 - Portfolio: 1

    I’m a passionate software engineer of 6 years, with knowledge and experience in prototyping, developing and deploying web applications, web services and platforms powered by the popular Python frameworks - Django, Flask, or PHP and PHP frameworks. I also have considerable experience - Building standalone desktop applications, utilities, system and automation tools. - Building mobile web services with offline support, syncing and data packaging to preserve bandwidth efficiency. - Implementing enterprise-level search and matching engines with Apache Lucene / Solr. - System administration and bash scripting. I work very quickly and go to considerable lengths to ensure that every job I undertake is delivered to my clients’ complete satisfaction. I’m constantly learning, and I’m always interested in taking on new challenges. Whatever your software needs are, I’m confident I can help you. References available. Specialties: Python, Django, Flask, Werkzeug, Pylons, SQLAlchemy, HTML, HTML5, CSS, CSS3, JavaScript, PHP, Solr, Lucene, Apache, Nginx, PostgreSQL, MySQL, Linux/FreeBSD administration, Web services, GIS, Geocoding, Vim, VimL, Git, Mercurial.

    $33.33 /hr
    1 hours
    5.00
  8. Sergey S.

    Sergey S. Agency Contractor

    .NET, Autodesk API (AutoCAD, Revit, Navisworks, Inventor, Maya)

    Russia - Last active: 1 day ago - Tests: 7 - Portfolio: 12

    Hi, My name is Sergey. Just check my portfolio, and you will find a lot of programs that I have developed. I believe that my strong sides are my Creativity and Punctuality. My first goal will always be to meet your needs and deadline. When working on a new project, I like to speak with the client, so that I can have a clear understanding of his/her needs and vision of the project. I am an individual Autodesk API / .NET developer and have over 9 years of experience as an AutoCAD Specialist. I develop custom add-ins for Revit, AutoCAD, Navisworks using the Autodesk API's. Please take a look at my work history for comments from other clients. Thank you in advance for your time and consideration. I look forward to working with you soon. Skills and Experiences: - CAD systems [Expert in CAD programming and custom CAD application development for AutoCAD, creating custom entity/objects, cutomize AutoCAD, custom commands, using ObjectARX, VBA-scripts. Navisworks API (.NET, COM) Developer. Revit API (.NET, COM) Developer. Microstation v8 development (VBA, .NET, MDL). SmartPlantP&ID Developer] - Windows desktop Development [Desktop Applications(WinForms, WPF). Expert in Excel-datasheets, Macros-VBA.] -Web development [ASP.NET. MVC. HTML5. CSS3.] -Microsoft Office [Access developer. Excel macros developer. VBA developer.]

    Associated with: Smart SQ-O

    $27.78 /hr
    951 hours
    4.83
  9. Azwaan A.

    Azwaan A. Agency Contractor

    Senior Developer/Solution Architect (C#, .NET, MVC, AZURE, SQL)

    Sri Lanka - Last active: 1 day ago - Tests: 7 - Portfolio: 9

    An Accomplished Software architect, consultant and Lead Developer, with in-depth expertise on Desktop, Web, Cloud and Enterprise applications on the .NET platform as well as strong ETL and Business intelligence expertise on the SQL Platform. Highlights 13 yrs of experience in the Industry. More than 20,000 Hrs of development work. more than a Dozen certifications (MCPD, MCITP, MCTS) on various .NET and SQL Server related technologies. I write clean code, Follow SOLID principles in development, designed to to develop manageable, extensible and reusable systems Co-Founded a US Based startup Available to work on US EST work hrs Expertise on requirements analysis , estimation to Architecting solutions and leading teams on complex development projects to review and performance tune existing applications. In-depth knowledge and familiarity of developing applications for a number of industry domains such as Financial services, Energy, Lead Processing, Automobile, Telecom billing, Consumer goods and Manufacturing. Extensive experience in enterprise software development life-cycle. Agile and Scrum/XP Methodologies in managing project teams. Key Achievements Architected, Managed and led development effort to build a complete eco-system for automobile lead processing, lead delivery, inventory management and digital advertising. Founded a Microsoft technology consulting and outsourced product development firm, leading its product delivery team and delivered multiple solutions in different industry verticals. Led improvements to existing development processes using best practices, guidelines and process re-engineering on multiple engagements. Multiple successful consulting and delivery engagements turning around troubled existing systems into revenue generating applications that can be scaled to meet customer demand. Was part of team that built the world’s first Online AGM solution. Web Technologies ASP.NET MVC (2.0 to 5.0), ASP.NET Forms, HTML5/CSS3, WCF Web Services , .NET 2.0 Web Services, SOAP/JSON/AJAX/REST, JQuery, ODATA, Knockout JS Windows Applications Windows Forms, WPF, Silverlight Frameworks .NET Framework (2.0 to 4.5), Telerik Kendo UI, Windows Azure (Cloud), Amazon SDK Software Design/Architecture Patterns GRASP, GOF, MVC, MVP, SOLID, DRY, KISS, YAGNI, Domain Driven Design(DDD), CQRS Databases/Database Technologies SQL Server (2005 – 2012), SQL Integration Services, SQL Reporting Services, Geo-Spatial Data, MongoDB, LINQ, Entity Framework, SQL Azure Middleware MSMQ, Windows Workflow Foundation, NServiceBus, SQL Service Broker Development Process Methodologies Agile, Scrum/XP, Prince 2, TDD, DDD , BDD, Continous Integration (CI) Tools Jetbrains Teamcity, 3Scale API, JetBrains DotTrace, YSlow Payment Technologies PayPal, Chase Payment Tech, Speedly, BrainTree, PayPros

    Associated with: Inexis Consulting

    $33.33 /hr
    2,812 hours
    4.92
  10. Muhammad W.

    Muhammad W. Agency Contractor

    PHP/Mysql Programmer

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

    Dedicated, dynamic web developer experience in developing websites .Detail oriented, delivers results for employers.Eeager to learn new technologies. Hi,I am Muhammad Waqas.I have a good working knowledge and experience in MySQL, PHP, Javascript, XHTML, XML,ajax.I have also worked on php framworks like Codeiginiter,YII Framework.I have also work in .Net and Java.

    Associated with: Hameed&Majeed Soft (H&M)

    $12.22 /hr
    209 hours
    5.00