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Sergey Ruby on Rails Developer Over 9 years experience in the software industry. Proven ability to jump into new projects, exceed client expectations, and learn new technologies quickly. Managed complicated development projects from concept to completion across various industries, including financial services. Excellent communication skills with strong background working directly with coworkers and clients to identify business objectives and establish requirements. TECHNOLOGIES Programming Languages: Ruby, JavaScript, basics of Elixir, Go, Python. Markup languages: HTML, CSS, HAML. Operating Systems: Linux, Mac. Testing Frameworks: RSpec, minitest. Web Servers: Nginx, Apache; Passenger, Unicorn; Puma. Database Servers: MySQL, PostgreSQL. NoSQL databases: MongoDB. APIs: Facebook, Vkontakte, Twitter, Google. Ecommerce API: Paypal, Google Checkout. Frameworks: Ruby On Rails, Ember, React, Angular, Sinatra, Phoenix. Project Management: Codebase, Pivotal, Jira, AgileZen, Redmine. Methodologies and Approaches: OOP, BDD, TDD, Agile Methodologies, RESTful web-services design. Source Control: Git. Other: JSON, YAML, Sass, RVM, rbenv, Heroku, Redis, Sidekiq, Solr, Docker, Bootstrap, APN, GCM, S3. CAREER HISTORY under NDA project August 2019 Position: Ruby on Rails developer Swan June 2018 - August 2019 Position: Ruby on Rails developer Project description: Big monolith project, 10k+ commits, 160+ models. Tools and technologies: Ruby On Rails, Vue.js, CofeeScript, MySQL, S3, Bash Script, Solr, Github, Rubocop, Circle CI, Yarn, Slim, Bootstrap, Webpacker, Twilio, Stripe, Airbrake, New Relic, Mixpanel, Slack, PivotalTracker. gems: rails 4, active-admin, bootstrap, coffee-rails, fakes3, webpacker, jquery-rails, active_model_serializers, cancan, wicked_pdf, mixpanel ruby, sunspot_rails, awesome_print, simple_form, sidekiq, sinatra, draper, interactor, phone, actsastaggable, airbrake, new_relic, foreman, fakes3, stripe, twilio-ruby, paranoia, omniauth google, omniauth facebook. Duties: • Add new complex (from business logic perspective) features from the first day, direct discussion with american customer/CTO; • 24 close and 6 open pull requests for the first 2 months; • Found a bug at ruby File#extname, contributed issue on bugs.ruby-lang.org (https:// bugs.rubylang.org/issues/15244); • Add sms feature, that counting unicode symbols and withdraw credits for sending sms (works through twilio); • Working with S3: add ability to rename filenames, add data json-exporter with result upload to s3; • Fix performance issues in ActiveAdmin (SQL); • Work with services (interactors), decorators, datatables (jQuery with custom ruby DSL wrapper), data migrations, thor tasks, mailers; • Make pulls request reviews, help junior guys; • Work with pdfs generated by application (wicked_pdf gem); • Add documentation comments to each changed class or module, prepare big spec documents for new features; • Work with front-end part on CoffeeScript and jQuery, add markup on Bootstrap; • Refactor code wrote by previous contributors; • Fix old well-known bugs, that no one wanted to fix before; • Add foundation code for request specs for Active Admin; • Working with rubocop, fix all connected with changed code offenses; • Covering code with specs on RSpec, initiate spec for active admin part via request specs. Swan February 2018 – June 2018 Position: Full-stack Ruby on Rails developer [at Swan] Project description: 50k+ commits, 900+ models, 60+ bash scripts, TDD approach, test suite that passes for 27 hours on single machine (and ~100 Solano workers parallelism it), single unit test on RSpec can be up to 4000 lines. USA Government (Indiana Department of Child Services) management gateway for kids that need help. Tools and technologies: Ruby On Rails, ReactJS, PostgreSQL, jQuery, Bash Script, Docker, ElasticSearch, Github, RSpec, Karma, Jasmine, ESLint, Solano CI, npm, Yarn, Sass, Gulp, Vim, jQuery Migrate, Slack, PivotalTracker, Harvester, Jira. gems: rails 5, carrierwave, cancancan, coffee, devise, ffaker, haml, newrelic_rpm, rails-observers, resque, sass, sinatra, custom state_machines, typhoeus, unicorn, capybara, selenium-webdriver and more Duties: • Adding new functionality among the project and inner custom gems, using feature switchers (for switching on and off business logic). • Create resque jobs and optimise rake tasks. • Upgrade jQuery from 2 to 3, updating gems and node modules. • Removing NPM in favour of Yarn (change bash scripts, clean up). • Fixing and writing new validations for existing logic. • Refactoring legacy code, fixing SQL queries. • Writing specs on RSpec and Karma specs for front-end code. • Upgrade selenium-webdriver, geckodriver, firefox 60. • Taking part in pair-programming. • Fix plenty of bugs on the front-end and back-end side. Bina.az, Tap.az June 2017 – December 2017 Position: Full-stack Ruby on Rails developer Project description: More than 6kk advertisement requests per day. Bina.Az is a universal platform providing services for all participants of the real estate market. The project provides buyers with convenient access to the largest database of offers for the sale and lease of real estate, and real estate agencies, construction firms and individuals - the best way to deliver information to their potential customers. The project was founded in 2008 and at the moment is the largest resource in the real estate sector in the Azerbaijani market. Tools and technologies: Ruby On Rails, JavaScript, CoffeeScript, PostgreSQL, Github, Circle CI, Slim, MiniTest, HipChat. gems: rails 4, rails 5, capybara, simple_form, slimrails, whenever, cells, torba-rails, sass-rails, cancancan, scss_lint, letter_opener, pry and another gems and custom gems made specially for project. Duties: • Enhancing banners advertising system: adding advertising balancer with ability to monitor banners ether and rearrange dynamically percentage of it’s showing based on current performance of system. • Internal wallet (virtual money within the project). • VIP advertisement items feature. • Refunding money and reverting services functionality. • Updating Binaaz application and shared submodule from Rails 4 to Rails 5 (by myself within the whole project. 17k lines of ruby code. And not including old.custom.gems that is 5 years old). • Adding new features to the “shared” submodule to use among projects. • Writing unit, functional and integration tests Mauris laoreet quam ut dolor egestas posuere. iRonin September 2016 – May 2017 Position: Full-stack developer Project description: The EmployeeReferrals.com platform is the most sophisticated solution available, scaling from SMBs to Fortune 500s. Clients universally experience dramatic increases in referrals, as well as in applicants and hires from referrals. Jobs have been referred to over a million candidates worldwide and recruiters have been provided with an entirely new source of top quality passive candidates. Tools and technologies: Ruby On Rails, JavaScript, CoffeeScript, React.js, Backbone.js, MySQL, Sidekiq, Solr, Redis, Codebase, Github, Circle CI, HAML, 3Hub (for Amazon), HipChat. gems: sidekiq-pro, devise, rabl, paranoia, timecop, letter_opener, pry, rails 4 and 200 more. Duties: ● Diving into more than 265k lines of ruby code. ● Following best practices: decorators (draper), services, delegators and presenters (SimpleDelegator), queues (sidekiq), query objects, state transitions (state machine), policies (for conditions logic). ● Resolving critical tickets at the first month of working. ● Enhancements and changes on client side - React.js, Backbone.js, CoffeeScript and hamlc. ● Working with custom Chrome Extension for project (pure javascript). ● Adding rake tasks for simplifying running queues. ● Searching with Solr - indexing, conditions, pagination. ● Working with different ATS API. ● Error handling. ● Adding changes on UI, using Bootstrap. ● API versioning. ● Writing new functionality, doing enhancements, refactoring existing code. ● Writing specs (RSpec). ● Adding docs for new features to codebase Notebook. ● Using chat bot to perform merges and deploys. ● Using encrypted data (GPG) for db dump, letters, passwords. ● Close cooperation with the core team in both ways: real time and asynchronously. ● Working as full-stack developer on BE and FE sides Time Tracker Position: Ruby on Rails Developers Project description: The internal project for tracking time and management. Tools and technologies: Ember.js, Emblem.js, Ruby On Rails, JavaScript, CoffeeScript, Postgres, Sidekiq, Redis, Codebase, Github, HipChat, Trello, Pivotal. gems: sidekiq-pro, devise, puma, figaro, pry, doorkeeper, cancancan, rails 4. Duties: • Developing project, that consist of front-end part on Ember.js, back-end part on Ruby on Rails and Chrome Extension on Ember.js. • Chrome Extension functional for Codebase, Github, Trello, Pivotal. • Using serializers (active_model_serializers), interactors (https://github.com/collectiveidea/interactor), Postgres enum data types, Pods in Ember.js FE project (http://www.programwitherik.com/ember-pods/), services. • Adding rake tasks. • Covering with RSpec tests. Mind Studios March 2015 – August 2016 Position: Full-stack Ruby on Rails developer Project description: Project helps to find the best worldwide bartenders, develop cocktails and bar culture together by sharing great ideas, knowledge and passion. Tools and technologies: Ruby, Ruby On Rails, Javascript, PostgreSQL, Docker, nginx, Redis, Javascript, Git, Masonry. gems: acts-as-taggable-on, puma, carrierwave, sidekiq and others. Duties:
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