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Sergey Rogachov

Sergey Rogachov

Technically challenging systems development.

Ukraine - Tests: 10 - Portfolio: 2

Why you should hire me , instead of cheaper alternatives? Because you get what you pay for . Who am i ? I am a software developer, team lead and project manager with more then 19 years in industry. My strong sides are: problem solving, optimization, reverse-engineering skills, focus on client needs, attention to quality and economics of the decisions, deep understanding of computer systems and software architecture. I worked on various projects for different industries like marine transportation, web application for computer-aided learning, mobile applications; security: iClass, rfid, reverse-engineering.

$44.44 /hr
851 hours

Alex S.

Alex S.

Software Engineer

Ukraine - Tests: 3 - Portfolio: 2

I've got my first computer when I was 7 years old. One week later first program was ready. Programming languages and processors have changed but I can't stop till today. I help people transform ideas into websites and applications. I try to understand how things work, only after I build a solution that picks up business to the next level. I can guide client over the bridge between business process and IT, providing consulting on all steps from choosing technology to deployment and maintenance. My biggest passions in my work are algorithms and distributed systems. I believe that fundamental theory in computer science is a basis for significant achievements. It's important that every new day brings new knowledge. Based on my experience in software development, work approach boils down to the following rules: - do something only if you have all required information - if you don't have required information - ask questions - if you don't know how to do - you should know how long can it take to learn

Groups: Coding Champs

$33.33 /hr
972 hours

Danil Kostrov

Danil Kostrov

Fullstack JavaScript Developer

Russia - Tests: 10 - Portfolio: 6

My strongest skills are: - JavaScript, jQuery, Backbone/Marionette, Underscore/Lodash, RequireJS - HTML5, CSS3, LESS, Twitter Bootstrap - Ajax, Socket.IO, PeerJS - WebRTC, MediaStream API, Web Audio API - MongoDB/Mongoose - Node.js, Express - PhantomJS - REST services - XML/XSLT/XSD - JSON Schema - Google Chrome Extensions - PhoneGap/Cordova/Crosswalk - Node-Webkit - Unit testing

$35.00 /hr
4,085 hours

Alexander Kozlov

Alexander Kozlov

Top level professional Architect and SW engineer

Russia - Tests: 19 - Portfolio: 8

Make things done! I'm a professional software architect/developer with more than 12 years of experience. During my career I have been working both for a companies from Fortune 500 list, and a small local companies. My core competency lies in the world of scalable websites and web applications, mobile applications, cloud SaaS and PaaS, desktop software and games development. I love to do my work right and really enjoy being respected for the things i do.

$48.00 /hr
1,772 hours

Maksym Skliarov

Maksym Skliarov

Senior iOS and Ruby on Rails developer, 5+ years of experience

Ukraine - Tests: 7 - Portfolio: 1

Over the last 5 years I was building iOS apps with Ruby on Rails backend on daily basis, 11 years total in programming on different languages: Swift, Objective C, C, Ruby, Python, bash, Pascal, Delphi, Assembly (Assembler, ASM), Processing. Also I build Mac OS utility apps time to time. I really like my job and iOS with Ruby on Rails makes development process very fast and enjoyable. Here is the list of major technologies I use (I like to learn new technologies too): - social SDKs: Facebook, Twitter, Google Plus, LinkedIn, Vk, Upwork, Elance; - cloud storages: iCloud, Amazon Web Services, Parse; - push notifications: Urban Airship, Parse, Infobip, custom web services; - analytics: Flurry, Adjust, Google Analytics, Fabric (Crashlyticts), Urban Airship, Parse; - payments: Paypal, Balanced payments, Braintree, Stripe, LiqPay; - SMS and voice: Twilio, Nexmo; - maps: Google, Apple, Yandex, Open Street Map; - databases and RDBMS: - on iOS: SQLite + CoreData, Realm; - on Ruby on Rails: PostgreSQL, MySQL, SQLite; - custom UI controls: custom transitions, animations, customization of default UI controls; - web: HTTP requests, development and usage of RESTful JSON and XML APIs; - RESTful JSON API: Jbuilder, RABL, MultiJson, YAJL, Oj; - HTML template engines: ERB, Slim, HAML; - stylesheets: CSS, SASS, SCSS, Twitter Bootstrap, FontAwesome and many others; - JavaScript libraries: jQuery, Angular, React, Twitter Bootstrap, HTML5Shiv, Respond.js, Highlight.js, CKEditor, TinyMCE, Owl Carousel and many others; - deployment of Ruby on Rails projects: VPS, Heroku; - programming design patterns: MVC, Active Record (Core Data), Singleton, Decorator (Category, Delegation), Adapter (Protocols), Observer (Notifications and Key-Value Observing), Memento (saving and restoring state of object), Facade; - programming principles: REST, DRY, KISS; - version control: git, SVN (I prefer git). Please, check my portfolio here: http://www.iosonrails.com/portfolio to see my latest published projects. Thanks for reading this! Best regards, Maksym.

Groups: Application Developers Alliance

$50.00 /hr
1,035 hours

Robert A.

Robert A. Agency Contractor

5 years PHP Twitter Bootstrap CakePHP Yii Codeigniter

Armenia - Tests: 2 - Portfolio: 2

4000+ hours here in Upwork! More than a decade of extensive experience as a software developer. Excellent knowledge of designing and developing on PHP-MVC based frameworks such Yii, CakePHP Laravel, CI and etc. Developed number of challenging applications and services including Online Marketplace, web services (SaaS), Content Management Systems (CMS), Customer Relationship Management (CRM), Intranet solutions and web projects of various complexities. Experience with automated code generation, creation of UI/UX and writing of requirements specifications. Great focus on systems’ reliability, performance, Security and success of the project.

$20.00 /hr
5,063 hours

Grzegorz D.

Grzegorz D. Agency Contractor

PHP Yii Symfony 2 MySQL Postgres AJAX Wordpress Twitter Bootstrap CSS3

Poland - Tests: 8 - Portfolio: 19

I'm predominantly interested in a stable, longterm involvement in a project that would allow me to both prove and solidify my expertise in the technologies I know as well as learn new ones in the ever-evolving industry. I specialize in websites built in custom PHP, Yii, Symfony 2, Wordpress, MySQL and Postgres. I'm also actively exploring Magento. I'm no stranger to frontend work either - packed with CSS3 and Twitter Bootstrap experience I can make sure your website will be on par with modern standards. My value as a provider is not only about the technical skills, but also about reliability. I work on a consistent schedule and I don't suddenly fall silent and disappear just like that.

$29.00 /hr
2,792 hours

Maxim A.

Maxim A. Agency Contractor

Magento, PHP, MySQL, Ajax, CakePHP Developer

Ukraine - Tests: 7 - Portfolio: 10

Over the last 10 years, I have developed a wide range of websites using HMTL, DHTML, PHP, Smarty, MVC (Model, View, Controller), Subversion, Ajax (Prototype, Jquery) and MySQL including sites for startup companies and small businesses. I have experience in Magento, Zend Framework, For fast development i'm used CakePHP framework. My experience include e-commerce development based on Magento and Interspire solutions. Create custom modules and make modifications to storefront. Magento migrations between servers and versions upgrading

$34.00 /hr
10,298 hours

Alexander K.

Alexander K. Agency Contractor

GAE(Java)/ GWT/ Google APIs (AdWords, Analytics, Apps SDK, OAuth etc.)

Russia - Tests: 4 - Portfolio: 8

I have big experience in web-development. I actively use these Google Cloud Platform related tools and technologies in my customers and my own Internet-projects: — Google App Engine & related frameworks (GAE - Java, Objectify) — Google Web Toolkit & related frameworks (GWT, GWTP, GwtBootstrap3, mgwt) — Google APIs & Google Apps integration (incl. Google Apps Script) — Google Chrome Apps (extensions, hosted and packaged apps). I also have great experience in integrating custom applications with a variety of popular systems and services, the only most known of them are: Facebook (Apps & APIs), PayPal, WordPress, Magento. Furthermore, I am experienced in Internet marketing, business analysis and project management. I am specialist in use such Google tools as — Google Analytics, — AdWords & DoubleClick Ad Planner (incl. AdWords scripts), — AdSense & DoubleClick for Publishers (DFP) Small Business, — Google Tag Manager, — Webmasters Tools. I was individually qualified in Google AdWords Certification Program with specialization in — Search Advertising, — Display Advertising, — Reporting And Analysis. My Agency AKolchin.COM is a Google Partner (AdWords) https://www.google.com/partners/#a_profile;idtf=013336283932214277773 My personal Google Partner profile: https://www.google.com/partners/#i_profile;idtf=117869221837582447726 Thank you, Alexander Kolchin

Groups: Application Developers Alliance

$45.00 /hr
3,001 hours

Vladimir Kuriev

Vladimir Kuriev Agency Contractor

Node.js / MongoDB / CoffeeScript / jquery / RoR / PHP Senior Developer

Russia - Tests: 11 - Portfolio: 6

Greeting potential buyer! I'm a Node.js / MongoDB developer. Do you need professional web-developer? nodejs/coffeescript application? Very complicated javascript? Custom plugin for Magento? Great! Let's know each other.I'm experienced developer of the Lodoss team based in Russia (GMT +3). I've been developing web-applications over 7 years. I have extensive experience in technologies such as: Node.js, RoR, MongoDB, CoffeeScript, SASS, Compass, PHP (OOP, MVC, ORM), PHP Frameworks (Zend Framework, Laravel, Codeigniter, Kohana, Symfony), AJAX, Javascript (Jquery, ExtJS, Prototype, Mootools, nodejs), XML, xHTML/CSS (valid, semantic, tableless layout).I worked with a high-loaded systems (SOAP/XML-RPC) I have worked with various Version Control System (SVN, GIT) and project management (Redmine, Basecamp, Pivotal, Assembla) I'll be glad to help you. Best regards.

$40.00 /hr
9,627 hours