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Roman Rott's web projects' screenshots preview
Roman Rott's web projects' screenshots preview
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Notification Engine

Groupon logo
* Internal project. Screenshots can't be shown.

Groupon is an US e-commerce marketplace. I am working on their notification engine that handles reservation related notifications for Online Booking. It consists of a web server and a set of background workers to send messages and receive callbacks from the SMS/Calls service.

Role:
Back-end developer
Responsibilities:
Languages:
Ruby 2
Frameworks/Libs:
Ruby on Rails, Resque, Redis, Groupon-specific services/APIs
Status:
Internal project. Is online and work as a part of Groupon's products.

Callback system

Enova logo
* Internal project. Screenshots can't be shown.

Large enterprise project in financial sphere intended to optimize business processes of the loan company.

Role:
Team Lead.
Responsibilities:
Code reviews, estimating and allocating resources.
Decision-making and negotiating.
Writing new and refactoring legacy code.
Languages:
Ruby, JavaScript
Status:
Internal project. Is online and works as a part of Enova's products.

Dabble

Dabble is an online community marketplace for people to discover, teach and host unique and affordable one-time classes. Was working mostly on UI parts of the app using JS and CoffeeScript.

I was working on migrating from old SSO to a new one, refactored and removed legacy code, optimizing and performance enhancement. Was implementing new features and products.

Role:
Front-end, Back-end developer
Responsibilities:
Languages:
Ruby, CoffeeScript
Frameworks/Libs:
Ruby on Rails, Trailblazer, Cells, Roar, ActiveAdmin, jQuery
Testing Frameworks:
Rspec
Status:
Online.

Chairlift(Better Feedback)

Chairlift is a modern, cloud based HR solution that elevates employee performance and provides HR professionals with the insight to nourish workplace culture. It is an internal Sphere project I worked as a part of remote team.

Role:
Front-end, Back-end developer
Responsibilities:
Implemented several UI parts/features of the application using React, Redux and ES6. Worked on back-end entities.
Languages:
Ruby 2, ES6
Frameworks/Libs:
Ruby on Rails 4.2, React+Redux
Testing Frameworks:
Rspec, Factory Girl
Other technologies:
JSON, postgreSQL
Status:
Online.

Chairlift Expenses

Chairlift Expenses
* Work is in progres... Screenshots can't be shown.

Chairlift Expenses is an internal Sphere’s project for handling company's expenses. I was working on it starting from the initial proposing, planning and designing architecture and finishing implementing both front and back-ends of the project. Switched to another roject befor this one ended.

Role:
Team Lead
Responsibilities:
Code reviews, estimating and allocating resources, writing stories. Decision-making and negotiating, communicating with the project owner.
Writing code, making architectural decisions.
Languages:
Ruby 2, ES2016
Frameworks/Libs:
Ruby on Rails 5, React, Redux
Testing Frameworks:
Rspec
Status:
Work in progres...

IraRott.com - online store of knit and crochet patterns

Ira Rott is a Knit & Crochet Designer living in Southern Ontario, Canada. This website is her online shopping cart for selling digital material (pdf files with patterns).

There are hundreds paid and dozens free pdf patterns on the site, that can be downloaded and used by masters around the world. Additionally, it has Ira's portfolio and integration with Etsy system.

Website is a kind of CMS that has almost everything customizable using admin page, beginning with adding new patterns, portfolios, creating standalone pages, categories etc and ending with changing all SEO-related parameters of this website.

Role:
Full-Stack developer. Remote developer
Responsibilities:
Creating back-end and front-end, admin page
design, SEO-optimisation
configuring and optimization of the web, SQL servers, site migration, support current features and monitoring website's state.
Languages:
Ruby 2.1, JavaScript, CoffeeScript
Frameworks/Libs:
Padrino, Jquery
Other technologies:
SASS, Haml, ActiveRecord, Carrierwave, Poltergeist, Selenium, JSON, Newrelic, Sprockets, Nginx, PostgreSQL, Capistrano
Status:
Online

Cloud Hosting control panel

Cloud by IX is a Cloud Hosting service created for system and database administrators, web developers, resellers, hosting professionals and business infrastructure. An entire business can literally be operated within a single Cloud by IX product. Service is integrated into IXWebhosting.com and CloudByIX.com hosting brands.

Current project is a Single Page JavaScript Application that integrates CloudStacks into current manage panel of Ecommerce.com's brands. Application has Ruby on Rails and Sinatra on back-end and backbone.js on front-end

Role:
Full-Stack developer. Member of a team of front end developers, BAs, PMs, admins, etc. This product was developed and released using Agile methodology.
Responsibilities:
As a part of the team: Creating UI that integrates current control panel with CloudStack. Design of some UI components. Adapting SOAP API interface to JSON and vise verse. Supporting released features, updating functionality as it was required by MVP and Agile methodologies. Security researcher
Languages:
Ruby 1.9.7 and 2.1.3, CoffeeScript
Frameworks/Libs:
Ruby on Rails 4.0, Sinatra, Backbone.js 1.1, Marionette.js, jQuery
Testing Frameworks:
Rspec 3.2, Capybara, Jasmine, VCR, site_prism.vcr
Other technologies:
Capistrano, SASS, ROM, Guard, Node, Faye
Status:
Online and available inside of control panels of 2 Cloud Hosting products: CloudByIX and IXwebhosting.

rrott.com - current website-portfolio

My own website with blog and portfolio. The Website includes basic information about myself, my projects, my contact information and blog post related to web-development and security researches.

Role:
Full-Stack developer. Security researcher
Responsibilities:
Creating back-end, front-end, design, SEO-optimization, performance optimization, configuring web server.
Languages:
Ruby 2.2, CoffeeScript
Frameworks/Libs:
MiddleMan - static site generator. This is a JQuery-less website
Other technologies:
HTML5, Haml, Pure, Nginx, HTTP/2, WebP
Status:
Online
Website: rrott.com
Portfolio: /portfolio
Blog: /blog

Shlyapa-Pay.info - payment system for CTF games

«Shlyapa-Pay» is a fake payment system created for a CTF(Capture The Flag hacking game) held by «Berezha Security».

This payment system has its own website, blog, integration with ActiveMerchant as a fake payment processing. It behaves almost the same way as a common payment systems like PayPal or WebMoney allowing users to send and receive costs to/from each other. The project has its own shopping cart and kind of social network created with several pre-defined vulnerabilities in mind.

«Shlyapa-Pay» was used in game held during International forum «Cybersecurity: Ukraine and the world» and then, after fixing all the vulnerabilities and adding new ones, was a part of a game at the Cybersecurity Olympiad «HackIT-2015»

Role:
Full-Stack developer, Game-Master's assistant during 2 CTF games.
Responsibilities:
Creating back-end, front-end, integrating free design, admin page, protecting the application from all possible security issues except pre-defined ones. Creating ActiveMerchant payment processor that can be integrated into a Shopping Cart. Was configuring and optimising web, SQL servers, monitoring services and applications during the games.
Languages:
Ruby 2.2, Javascript
Frameworks/Libs:
Padrino, Jquery, Bootstrap
Other technologies:
SASS, Haml, ActiveRecord, ActiveMerchant, Devise, Upmin, Faker
Status:
«Shlyapa-Pay» is offline now due to the nature of applications created for CTF games.

MyBestDate.xyz - dating website for a CTF game

«MyBestDate» is a fake Dating website created for a CTF(Capture The Flag security game) organised for UISGCon 11(2015) - Ukrainian InfoSec conference held by Non-Government Organisation «Ukrainian Information Security Group»

This Dating website had no real users or profiles and was created with several pre-defined vulnerabilities that allowed researchers to get flags and proceed with the next part of the hacking game. It has integrated chat and rating systems to allows gamers to use their skills on a system close to real ones.

Role:
Full-Stack developer, second Game-Master
Responsibilities:
Creating back-end, front-end; integrating free design, admin page; protecting application from all possible security issues, except pre-defined ones; configuring and optimising web, SQL servers; monitoring services and applications during the games.
Languages:
Ruby 2.2, Javascript
Frameworks/Libs:
Ruby on Rails 4.2, Jquery, Bootstrap
Other technologies:
SASS, Haml, PostgreSQL, Faker, CarrierWave, Devise, Administrate
Status:
«MyBestDate» is offline now due to the nature of applications created for CTF hacking games.

Ordering wizard for Cloud product on CloudByIx.com and IxWebhosting.com

IXwebhosting.com and CloudByIX.com are hosting services that provide cloud hosting product for their customers. This project is an integrated Single Page Application that allows to pre-configure and bye cloud product without using external payment services.

Role:
Full-Stack developer. Member of a team of front and back-end developers, BAs, PMs, admins, etc. This product was developed and released using Agile methodology.
Responsibilities:
As a part of the team: creating UI that integrates SOAP API interface with control panel and CloudStack that uses JSON. Supporting released features, updating functionality as it was required by MVP and Agile methodologies.
Languages:
Ruby 2.1.3, CoffeeScript
Frameworks/Libs:
Sinatra, Backbone.js, jQuery, Ruby on Rails 4.0
Testing Frameworks:
Rspec 3.2, Capybara, Jasmine, VCR, site_prism.vcr
Other technologies:
Capistrano, SASS, ROM
Status:
Online and available inside of control panels of 2 Cloud Hosting products: CloudByIX and IXwebhosting. Web application security testing.

Landing pages for IxWebhosting.com and HostExcellence.com

IXwebhosting.com and HostExcellence.com are hosting brands that have a lot of products including shared, cloud and VPN hostings, domain and SSL registrations, Site Builders and Design services, etc.

This project contains pop-ups and bunch of landing pages for current and pre-sales products that give the company an opportunity to sale a product using one-click purchase tool or Opt-In for a new project that is not yet released.

Role:
Front-end developer
Responsibilities:
Integrating design with current API and Hosting Control panel, adding code needed for One-Click purchase tool.
Languages:
Ruby 2.1.3, CoffeeScript
Frameworks/Libs:
Ruby on Rails 4.0, jQuery
Testing Frameworks:
Rspec 3.2, Capybara, Jasmine
Other technologies:
SASS, Faye, JSON
Status:
Online, used in 2 hosting brands: IXwebhosting and HostExcellence.

SecureVPN.xyz - VPN Service for a CTF games.

«SecureVPN» is a service created for the Cybersecurity Olympiad «HackIT-2015» with deep integration of «ShlyapaPay» payment service that allowed users to get paid VPN server and connect to any other servers in the network.

Service was based on an open-source project with hooks for OpenVPN that I had to rewrite for game's needs. The whole infrastructure had 2 VPN servers located in Amsterdam and Singapore, billing system located in Toronto and payment system in Singapore. Back-end was rewritten to add flags and integrate the product with 3rd party payment systems.

Role:
Full-Stack developer, Game-Master's assistant.
Responsibilities:
Adding and configuring VPN, SQL and web servers using Chef. Integrating fake payment system with the services, adding vulnerabilities and fixing existent ones.
Languages:
Ruby 2.1
Frameworks/Libs:
Ruby on Rails 4.2
Other technologies:
Chef
Status:
«SecureVPN» is offline now due to the nature of applications created for CTF games.

FindMeGetMe.xyz - fake dating service.

«FindMeGetMe» is a fake Dating website with an API for mobile application created for a CTF(Capture The Flag hacking game) organised for UISGCon 11(2015) - Ukrainian InfoSec conference held by Non-Government Organisation «Ukrainian Information Security Group»

This Fake Dating website was created for security researchers and had no real users or profiles. It was created with a pre-defined vulnerabilities related to Redis and Sockets. I used a Free design and added vulnerable Rack application that gets photos from Redis service using Sockets technology.

Role:
Full-Stack developer, second Game-Master
Responsibilities:
Creating back-end, integrating free design, configuring and optimising web, Redis servers, monitoring services and the application during the games. Creating API for a mobile app.
Languages:
Ruby 2.2
Frameworks/Libs:
Sinatra
Other technologies:
Redis
Status:
«FindMeGetMe» is offline now due to the nature of applications created for CTF hacking games.