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Time needed to complete a Object oriented design project on Upwork.

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Object oriented design Upwork freelancers typically receive a client rating of 4.72.

Last updated: October 1, 2015
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Samnang Chhun

Samnang Chhun

Expert Ruby/Rails Developer - Software Craftsman

Cambodia - Tests: 1 - Portfolio: 9

I'm among top 1% freelancers on Upwork. I have been developing software professional for the last 10+ years. I have have working on Rails since Rails 2.3 came out. Over the last 6 years, I have worked a wide range of applications using Ruby on Rails for startup companies. I have helped many US startup companies to build their team and grow with them.. I am agile practitioner, and Pair Programming lover, TDD/BDD, OO Design Principles, and OSS. I am an alumni of Ruby Mendicant University. Website: Github: LinkedIn:

Groups: Microsoft Certified Professionals

100% Job Success
$98.00 /hr
6,209 hours

Saul H.

Saul H.

Java/C++/.Net Software Engineer/developer/integrator/consultant

Venezuela - Tests: 3

Knowledge Areas and skills Custom Software Development, POS, intranet system, administrative systems and integration with intelligent software solutions consolidate, organize and centralize amount of information located in different divisions and departments, so that executives make decisions about payments, suppliers , prices, materials management, promotions, etc. Algorithms and programming skills, strong knowledge of C/C++ and Java. Strong knowledge of data structures, strings, sorting, arithmetic and algebra, combinatorics, number theory, backtracking, graph traversal, Algorithms for graphs, dynamic programming and computational geometry. Accounting area, experience in handling all movement of materials between stores and shops, all the accounting related to its retail. Point of sale Area, experience with integration between POS software and label printers, fiscal printers, barcode readers, fingerprinter and keyboards for point of sale. Oriented Object Programming and Low-level: exprienced in Java and C/C++/C#. QT libraries and Visual Basic. Scientific Programming: Matlab. IDES: Intellij Idea, Eclipse, Netbeans, Kile, Quanta. Servers: Apache-Tomcat. Functional Programming and AI: Haskell and Prolog. Database: MySql Oracle, Postgres, SQL Server and FoxPro. Web Development/Frameworks: Php, Struts, Vaadin, ZK, html and css.

$30.00 /hr
1,908 hours

Maciej Zubala

Maciej Zubala Agency Contractor

Senior Ruby On Rails developer

Poland - Tests: 4 - Portfolio: 6

Software development is not only my profession but also my greatest passion and hobby. This is why I spend majority of my free time improving my programming skills, learning new concepts, technologies, languages and tools. I get the greatest satisfaction when products I develop are released to the world and people start using it - that makes me want to spend more time at work. When not in front of my monitor, I'm probably taking care of my daughter or doing some sports (tennis and swimming most of the time).

Groups: Upwork Verified Developers

Associated with: Rocket Mind Software

100% Job Success
$38.89 /hr
5,523 hours

Giuseppe Valerio

Giuseppe Valerio

Software Engineer

Sweden - Tests: 10

I currently accept consultancies as architect or technical project manager, but still get my hands dirty into coding if the project is worth it. Specialized in handling, managing and tracking outsourced projects and communicating with remote-based teams with limited communication skills.

$33.33 /hr
2,633 hours

Tucker C.

Tucker C.

Web Application Developer

United States - Tests: 2 - Portfolio: 1

Hello! I'm a web application developer experienced in HTML5, CSS3, Javascript, Backbone, jQuery, PHP 5.3/MySQL, and Java, among others. I love creating rock-solid quality code that's well commented, bug-free, and that works flawlessly on all browsers. I utilize the latest object-oriented analysis and design principals such as encapsulation, design patterns, and refactoring to make clean, reusable code. I LIVE for the feeling of just having demolished a tough programming challenge with a beautiful, elegant solution. I still make it a goal to read regularly on the latest programming technologies. I'm constantly improving, and I routinely teach myself APIs, frameworks, and even entire language depending on what the challenge calls for. I can also dig into even the most complex code bases to squash bugs or refactor. I'm friendly, cooperative, and encouraging, and I make sure I understand employer's and teammates' goals so we can do everything possible to achieve them. I can work independently and create solutions from concept to completion, or I can work with a team with specific design goals. I ask questions early and often so the product meets the design specs as closely as possible. Overall, I love the challenge and reward of programming, and would be delighted to work with you on your next project.

89% Job Success
$155.56 /hr
1,260 hours

Charleson R.

Charleson R.

Experienced Filipino Web Developer

Philippines - Tests: 7 - Portfolio: 16

For 7 years, I have been in touch with different companies and clients who want to have a website built from the ground up. I have developed a wide range of websites ranging from social media related sites, websites designed specifically for mobile phones and tablets, e-commerce websites like online apparel store sites or real estate sites, websites for small businesses or startup companies. I mainly use PHP, HTML, JQUERY and MySQL when building these websites. My choice of out-of-the-box CMS to use is DRUPAL because this is a very flexible and well-built CMS and can be developed in many different ways. When it comes to work, I make sure that my clients are satisfied with my work so I really give a lot of importance to the quality of code I make and it's efficiency and usability. I am very open to many possibilities and take into consideration what my clients or employers want in their website. I give my best opinion whenever necessary in order to improve the development that may later on benefit me and my clients. If hired, I make myself always available for the client whenever they have some questions or additional clarifications. Long term relationship with my clients is a proof that they are really satisfied with my job and work efficiency. I am a teamplayer and I can work well with other people, I respect their opinions and points especially if they give better points that may improve work development. I can also work without much supervision as I always understand first clearly what needs to be done and how it should be done.

100% Job Success
$33.33 /hr
4,381 hours

Param Gandhi

Param Gandhi Agency Contractor

Java/J2EE, Liferay, Spring, Hibernate, Web services

India - Tests: 4 - Portfolio: 1

• 7 years of core IT experience in Business Analysis, Project Management, Software designing ,development and support of enterprise applications. • Experienced in Core Java/J2EE, Liferay Portal Framework. • Effectively developed stand-alone application to merge/migrate Credit Card portfolio of a bank to another. • Experience of gathering project requirements as a business analyst. • Experience of managing teams and projects as a Senior Team Lead. • Direct communication with client/business teams. • Knowledge of Financial (Credit Card Operations) and Manufacturing (semiconductors) domain. • Proficient programming skills using Liferay, Java, JSP, Servlets, Spring Framework, Hibernate Framework, Struts Framework, Object Oriented Methodologies. • Experience in IBM Web Sphere Application Server, Jboss Application Server and Tomcat • Experience with using IDEs like IBM RAD 7 and Eclipse 3.x. Version Control Systems like VSS,CVS, Subversion, clearcase. • Experienced in all phases of software life cycle like requirements gathering, system analysis, design, development, review, testing, deployment, configuration and maintenance of applications. • Excellent hands-on experience dealing with the onsite – offshore model. • Expertise in delivering value added customer services by bridging the gap between business and technical communities. • Effective result oriented team player with excellent communication and interpersonal skills

Associated with: Aspire Software Solutions

100% Job Success
$20.00 /hr
1,332 hours

Aleksandr Trdatyan

Aleksandr Trdatyan Agency Contractor

Expert Web App Developer - PHP MVC, REST, AngularJS

Armenia - Tests: 1

I am Alex, web development expert with more than 10 years of experience in multi national corporations with primary focus on designing and maintaining architecture of mobile payment solutions and leading team of engineers. I hold PhD degree from SEUA University in computer science. Mostly I develop: * Dashboards for web and mobile apps * REST APIs, back-end APIs * Responsive and adaptive web apps Front-end skills: * HTML5, CSS3, Jquery, Bootstrap, Angularjs, Sass/Less * Phonegap, Ionic Back-end skills: * PHP (Codeigniter, Laravel, Yii), Node.js * Mysql, PostgreSql, Mongodb, Redis Other skills: * GIT, Bitbucket, Github * Agile and Scrum development, Trello, Pivotal Tracker * OOP design patterns and MV*(MVC, MVP and MVVM) software patterns Currently I am located in GMT+4 timezone and have a good availability, expect quick responses to queries.

Associated with: Advanced Web Technologies Lab

$30.00 /hr
5,298 hours

Alex Shkor

Alex Shkor Agency Contractor

Software Architect. Full-Stack Developer. CQRS, MongoDB, SPA

Belarus - Tests: 1 - Portfolio: 3

My skills: 1) Back-end: ASP.NET MVC, CQRS, Event Sourcing, SignalR, TDD, DDD, IoC & DI, NancyFX 2) Front-end: AngularJS, KnockoutJS, BackboneJS, RequireJS, SammyJS, DurandalJS, Twitter-Bootstrap, jQuery, TypeScript, etc. 3) Data: MongoDB, Lucene, MSSQL, Redis, ElasticSearch, etc.

Associated with: Paralect

100% Job Success
$45.00 /hr
2,604 hours