Javascript Programmers and Developers

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Igor K.

Igor K.

Web Developer (PHP, MySQL, HTML, JavaScript)

Macedonia - Tests: 10

I am a professional web developer working on web applications of all kinds of PHP, MySQL, Javascript, Apache, HTML and CSS in agile manner. Quick-learner, talented, enthusiastic about exploring innovations, new technologies, scientific methods, best-practices and high performance scalable systems. I am always seeking opportunities to expand my knowledge and challenge myself. I am comfortable working with other developers and designers and have a proven history of successful bug fixing and trouble shooting tasks. I have a profound ability to work in a fast-paced environment and enjoy the adrenalin. Skills I bring to the table: - PHP/MySQL, - HTML/CSS, - JavaScript, Apache, SVN, jQuery, JSON, XML, - CMS, Wordpress, Joomla.

$15.00 /hr
104 hours

Yury Pliashkou

Yury Pliashkou Agency Contractor

CTO, Lead Web Engineer (PHP, Node, Ruby, JavaScript)

Belarus - Tests: 7 - Portfolio: 3

Hello, My name is Yury, I'm available online 16 hrs a day. Location: Belarus (Eastern Europe) GMT +3 Technologies: PHP stack : Symfony 2, Silex, Sylius, Bolt CMS, Symfony CMF, Zend Framework 1-2, Joomla 2-3 Javascript stack: jQuery, Angular, Bacon, jQuery mobile, Backbone, Underscore; DB: Doctrine ORM, MySQL, MongoDB, Memcached, PostgreSQL, SQLite Services: REST, SOAP, JSON APIs: Facebook, VK, Google, Tumblr, Twitter, SMS gates Search: Sphinx, ElasticSearch Caching: HTTP, file, Varnish Etc.: Highload optimization Spoken English, Polish, Russian, Belarusian

$50.00 /hr
2,932 hours

Daniel Z.

Daniel Z.

Highly skilled API integrator, PHP (ZF) Coder and Project Manager

Poland - Tests: 7 - Portfolio: 6

Goal: Project and develop high quality apps for your success. Profile: OOPHP & Zend coding, IT consulting and business analyst, project coordinator and manager, Other skills: Apache, Bind, SSH, bashscripting, Memcached, Github, Solaris, Oracle, MySQL, Radius, AD, expert knowlegde of many *ux and windows systems Advantage: Project and implementation of many web apps. Most of it projected and developed by myself using Zend Framework, Google API (youtube, gdata), social API (twitter, facebook). Some of it integrated with operating systems or AAA software (radius, ldap). Usually Design Patterns were used (like Template Method, Version of Control, DAO, Dependency Injection, Decorator and so on). Some application built upon a structure of web services (XML, REST, JSON), some using jQuery and AJAX. Tools and technologies: Apache, radius, bind, ldap, Zend Framework, XML, SOAP, Linux, Linux daemons, Memcached, Sockets, REST, JSON, Oracle, MSSQL, MySQL, Design patterns, MVC, SVN, BASH, PHPUnit, Xdebug, Unit testing, Google Youtube API, Google Gdata API, Google Maps API, Facebook API, PayU API

$35.00 /hr
2,056 hours

Andrey Sarapulov

Andrey Sarapulov Agency Contractor

Zendesk Consultant and Project Manager

Czech Republic - Tests: 8 - Portfolio: 5

Experienced bilingual European based Zendesk Consultant and Project Manager with 8000+ upwork(ex-odesk) hours with background in Robotics & Business. Self taught Front End Developer (HTML, CSS, JavaScript, jQuery, underscorejs, handlebarjs) with experience in Zendesk Help Center customisation, Zendesk app development, Zendesk API and Google Scripts. Familiar with all aspects of Zendesk including configuration, optimisation and integration with external systems. Over the last 5 years I was involved into all sort of Zendesk projects starting from single Agent instances going up to complex large implementations which cover: - Help Center customisations - Zendesk app development - migrations - integrations with other systems - process design and optimisation - account health check etc. For the last 3 years I am heavily involved into Project Management areas helping small and mid size business from variety of industries to accomplish their goals. Projects I been involved into covered - Customer Service organisation - Launching new business and startups - Developing processes for Support, Service - Custom development projects (front-end, back-end, widgets & apps, web services) - Processes optimisation and improvements etc. Being self taught Front End Developer I build a number of Zendesk Help Center designs, Zendesk Apps, Google Script driven web services. Also, managed and consulted other front end developers on Zendesk related areas. I am familiar with technologies likes: - HTML - CSS - JavaScript and jQuery (including AJAX) - underscorejs & handlebarjs - Google Scripts Tags: zendesk, project management, front end developer, HTML, CSS, JavaScript

Groups: oTranslators, Pro Customer Service

$30.00 /hr
8,671 hours

Vitaly Yakovlev

Vitaly Yakovlev

IT Pro (C#, C++, Java, project management, trading, derivatives)

Russia - Tests: 4

I have over 9 years of expirence in Software Development in different projects on different positions. Started as C++ developer I moved to Team Leader ans Senior .Net developer in russian bank. I choose one of programming languages such as C#, C++ or Java due to the task and have no fear to learn new things. I'd like to get a task, understand employer needs, organize development process/team (if required), and work (including both managment and development tasks then required) until task will be done for employer satisfaction.

$40.00 /hr
211 hours

Vladimir N.

Vladimir N.

Ruby-on-Rails Senior Developer, Project Manager

Russia - Tests: 5

8 years in IT as a Software Engineer 3+ years experience with Ruby-on-Rails Technologies I worked with: Cloud Services: AWS(EC2, S3, Route 53), Heroku Client Side: HTML, CSS, JS, jQuery, Angular, Bootstrap Server Side: Ruby on Rails, REST Databases: PostgreSQL, Oracle APIs: Facebook, Google, eBay, payment gateways and many others Testing: Rspec, Cucumber Version Control: git, SVN Other: Redis

$55.56 /hr
0 hours

Konstantinos Paraskevopoulos

Konstantinos Paraskevopoulos Agency Contractor

vTiger CRM ERP Expert

Greece - Tests: 1

I am an Internet Technologies and Software engineer, specializing in Vtiger CRM / ERP planning, development and implementation. My 8 years experience in Internet Technologies and 5 years focusing on vtiger allows me to implement any vtiger customization. I have implemented various integration projects of vtiger with 3rd party applications using WebServices, such as Joomla, Jomres, Wordpress, Virtuemart, OsCommerce and more. The strong background on business process re-engineering and business process integration allows me to easily understand the business needs on their CRM / ERP application to ensure the customization success. In the past 5 years i have worked with various companies in different industries around the world to help the design and the implementation of their CRM / ERP systems. Integrating their individual business processes to the vtiger platfrom, i have developed many modules for vtiger in order to "digitilize" companies specific processes and workflows to Vtiger platform. My philosophy for CRM / ERP systems is summarized in the following principle: "You cannot manage something that is not measurable". Towards this principle i assist my clients develop a system where they can track down all the information flow produced by their business processes and also the tools to streamline them, providing all the necessary information (BI) to the right department / user. I enjoy helping companies create their own tailor-made software that reflects their real needs, allowing the business to effectively utilize their resources and automate trivial processes thus saving time and money, that they can invest in growth (that is after all what software can provide time / money).

$100.00 /hr
284 hours

Jarek Zmudzinski

Jarek Zmudzinski Agency Contractor

Full stack web developer, Team leader

Poland - Tests: 8 - Portfolio: 13

Currently Software Development Manager in Allegro Group focusing on the subject of Big Data. I am a full stack web developer capable of delivering whole web applications from engine to layout, with over 12 years of experience in writing web applications and websites. During this time I've worked remotely full time for companies in New York (2 years) and in France (6 months).I tend to see myself as Software Engineer choosing technology appropriate to task at hand. I code primarily in Ruby and Ruby on Rails, and more recently I've jumped on a band wagon of Meteor.js popularity. These technologies allow me to deliver whole applications in no time. Since I've heard about genetic algorithms almost 20 years ago, I tried to focus on some machine learning problems, lately testing my skills on Kaggle platform and completing part of Data Science track on Coursera. I am perpetually trying to use these skills in my current job, proposing data science solutions that could transform some of our products and procedures, from Financial Accounting, through Managerial Accounting, down to the core of our IT products. Some of my proudest accomplishments are: - Single handedly writing fully functional Groupon clone -, from layout, through Ruby on Rails engine, up to scalable deployment in the cloud. The whole app had been completed within 3 weeks. - I have developed a Ruby on Rails CMS, as my pet project, which serves all webpages I have created for various customers throughout years - Over 20 minimalistic webpages, served by above mentioned CMS, beautifully designed by MINIMA agency. - Coauthored huge Ruby on Rails CRM application, working remotely for New York based company Direct Interactive - Ruby on Rails engine of Trzymajtempo social sport site ( - Played major role in a few more RoR applications. Fluent English speaker, proven by Certificate of Proficiency in English. Specialties: Ruby, Ruby on Rails, Meteor, Cloud, SOA, HTML, CSS, JavaScript, usability, team management, agile methodologies, scrum, Mac OS, Linux

$50.00 /hr
50 hours

Andrii Liashkevych

Andrii Liashkevych Agency Contractor

Excel VBA developer and business consultant

Poland - Tests: 3 - Portfolio: 35

I'm an experienced Excel VBA developer and business consultant. I create advanced Excel VBA based tools (reports, dashboards) to improve your business. I have a master's degree in project management and a bachelor's degree in finance. I worked as an IT project manager and CIO in various manufacturing, retail, real estate development and marketing companies, with anything from 15 to 20,000 employees, before I started my own business. I’ve been working on Elance as Excel VBA developer since October 2011, and I have many satisfied clients (SMEs and large corporations) from all over the world, including the USA, Canada, the UK, Ireland, Germany, the Netherlands, Sweden, Norway, Israel, Australia, South Korea, Singapore and more. My profile was at the top of the list of 300,000-plus Excel VBA professionals on Elance. Since Upwork Global Inc. merged Elance and Odesk into Upwork I moved from Elance to Upwork to be on the top of Excel VBA developers list on Upwork. I work by myself as Excel VBA developer and business consultant and I own/manage Excel Business Intelligence LLC (registered in Wyoming, USA) with a team for data management (data entry, data verification) jobs. Excel VBA is a great tool to help your business. And the main advantage of hiring me is that I don't just write Excel VBA macros, but I help you to improve your business first of all. I created a lot of simple Excel macros and many advanced Excel Add-Ins. My clients increased their profit and reached their goals using my help. Be excellent with Excel Business Intelligence! === Service Description === First of all, I can answer any question you have if you want to know how you can use Excel VBA to improve your business. I understand what businesses need, whether it's a small private business or a large corporation. My list of satisfied clients includes small stores and large retailers, local manufacturers and global manufacturing corporations, airlines with two aircraft and those with 100 aircraft, insurance companies, marketing and financial reporting companies, and many, many more. To help you improve your business, I can create complex Excel-based applications, with advanced formulas, named tables, pivot tables, charts, dashboards, customized ribbons, user forms and so on. In my VBA code, I never use unnecessary and slow operations (which are usually created by Excel Macro Recorder). I never use For...Next and other loops where it's possible to use just one operation instead, such as one SQL query. I use SQL queries to work with Excel data as well as to work with Microsoft SQL, MySQL, Access databases, CSV, text files and so on. That’s how my applications work so quickly, even with large amounts of data. I work with web services (REST, XML-RPC and so on). I can get any data from the web into Excel, send any data from Excel to the web, manage Internet Explorer from Excel (DOM), send SMSes and faxes from Excel-based applications, and much more. I use Office 2013 64-bit on Windows 7 64-bit to develop but I still have Office 2010 and Office 2007 32-bit to test my code. I also have Windows 8 and Windows 10 for testing purposes. I know PHP and JavaScript well enough to integrate my Excel-based tools on to web servers – I can use MySQL as centralized data storage for Excel files with multiple users (XML or JSON is used for data transfer). I have my own LAMP servers in Amazon Cloud and can provide you with a complete solution, including Excel-based tools and PHP scripts already installed on my web server. My team of highly educated data management professionals (almost everybody has a master's degree in mathematics or similar), together with my own management and VBA skills, can provide fast delivery and 100 percent accuracy for either automated or manual PDF to Excel or CSV conversion jobs. We use advanced mathematical algorithms in VBA procedures and in custom Excel formulas to provide fuzzy data processing – data matching, data cleaning, duplicate removing and so on. === Payment Terms === I can accept a fixed price if the job is simple (days of work, rather than weeks or months) and with a detailed and clear description. In other cases (include updating VBA code created by other developers), I would prefer an hourly rated job. If the fixed price work is completed to your original requirements but you want to change something that wasn't described in the original specification (for example, reformat sheets, add new functionality and so on), we will create another Upwork job with my hourly rate for the extra tasks. I have been working with Excel VBA for about 15 years – the last 4 years almost full-time – so I have in-depth knowledge and experience of the language. I also have a large VBA code library, so I can work really quickly. That’s why you will pay less overall with my hourly rate compared to other developers who have lower hourly rates – and you also get the best solution for your business.

$45.00 /hr
2,454 hours