Wasif Hossain

I have started with Rails 5 (5.1). While working in different projects, I was deeply involved in various aspects of web development, which required using many gems not limited to: Admin Interface: worked with ActiveAdmin gem that enables developing admin functionalities with amazing speed. ArcticAdmin is a wonderful template (theme) that adds great UI on top of the default theme. NOTE: I am a contributor to both of these projects. API: worked in both sides of working with an API - writing APIs (token based) that was consumed by client apps (android and iOS) and consumed many 3rd party APIs (OAuth 2 enabled) for business needs. Worked with many HTTP clients in the process - Faraday, Rest Client, Typhoeus, HttpClient, HttParty, Flexirest and many others (not to mention about good old Net::HTTP). ActiveModel::Serializers proved to be a very good tool for serializing attributes and associations. Serialization: used Active-Model-Serializers (AMS) to serialize json responses for the api endpoints. NOTE: I am a core member of this project. Authentication and OAuth: used the domain leader Devise gem for simple authentication as well as omniauth support. Devise-token-auth is another great tool that enables token-based authentication used mainly for protecting API endpoints. Its a very similar concept like OAuth but works in simple usecases. OAuth2 is highly recommended for business-critical API endpoints which can be easily implemented as well as consumed using rack-oauth2. Authorization: worked with both cancancan and pundit to control access permission for users on resources. Caching: used redis for caching http responses and running background jobs with Sidekiq. Code Analyzing: used Rubocop as a static analyzer that follows ruby best practices. Ecommerce: used Solidus (Spree next generation tool) that provides extensive ecommerce functionalities with easier 3rd party integration. Error Handling: Rollbar proved to be a very useful tool that captures exception/errors in production environment with deep insight. File Upload: found Shrine to be modular in design that enables adding required functionalities as modules. Form builder: Formtastic was widely used in my projects. Auditing and Versioning: PaperTrail was a great tool to work with whenever I needed to track changes in ActiveRecord models. Tree: Ancestry gem helped me to organize an ActiveRecord model into a tree structure and navigate paths in an elegant way. Pagination: Kaminari gem enabled pagination in a clean way. Background Job: used Sidekiq whenever I could isolate actions to run in background in order to make the original process run faster. Asset management: loved working with sprockets (asset packaging tool) though we should move to webpacker (and yarn) which is the recent tool actively supported by the Rails community.

I have used Postgresql as the de-facto database vendor in all the projects. I have applied indexes on table fields where appropriate to speed up value lookup, handled race conditions with database-specific locking feature supported by ActiveRecord, leveraged many advanced features provided by postgresql extensions to achieve fuzzy search like full text search, trigram, expression index, levenshtein distance etc. I feel good to work with the database in both way: writing pure SQL or using ActiveRecord like ORM, though I prefer the latter for its elegance and clean code.

using React.js to design responsive UI with complex state management.

Writing ES6+ to develop rich frontend interactions on web browsers. Using Vue/Webpack to build modular components.

I write tests in a semi TDD way to cover all sorts of testing including unit tests, integration tests and acceptance tests. Rspec and capybara enables me to develop test suite in this way while cucumber promotes BDD (Behavior Driven Design) by requiring collaboration from all stakeholders of the application (business client, project manager and developers).

Git is the part and parcel of my everyday programming. I have used advanced git mechanism to enjoy productive code collaboration in my projects. Effectively using Git has helped me scale team members in a project both for my client's projects as well as open source projects.

I have deployed production applications on heroku and used codeship as a continuous-integration tool to ensure that all of the tests pass before entering into production.