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The professional resume of Patrick Clery, Ruby on Rails Developer.

PATRICK CLERY - Ruby on Rails Developer

I'm a freelance web developer of over twenty years who builds single-page apps using Ruby on Rails & React.JS.

Whether you're looking to start a new project, add features to an existing one, or add an experienced developer to your team -- I can do it.

Skills Summary
πŸ₯‹ Ruby on Rails Ninja
πŸ‘¨β€πŸ’» PostgreSQL Wizard
πŸ‘¨β€πŸš€ React.js Rocket Scientist
πŸ•οΈ Agile Design Advocate
🐳 Docker Ship Captain


Freelance Web Development (2007 - Present)

Web Application Development with Ruby on Rails

  • RESTful or GraphQL API Design that is compliant to Google's JSON:API standards.
  • Database architecture with well-defined validations and indexes using ActiveRecord and PostgreSQL.
  • Advanced PostgreSQL operations: Procedural Programming, Views, Triggers, Query Analysis, Optimization.
  • Data scraping with Regular Expressions & XPath using Nokogiri.
  • Uploading & serving files from Amazon S3 buckets using ActiveStorage.
  • User Authentication & Access Restriction: OAuth, Devise with Warden or Pundit, 2-Factor Authentication with Twilio.

UI/UX Development with React.JS

  • Creating Single-Page Applications with React Router that deliver a modern user experience.
  • Styling pages with Bootstrap CSS, a popular design framework with a clean feel.
  • Converting design files from Figma, Sketch, or PhotoShop into a functional webpage.
  • Configuring apps to easily drop-in new CSS and JavaScript files with Webpack, Babel, and SASS.

Deployment, Version Control, and DevOps

  • Deploying to Heroku for production, developers, and testing stages.
  • Configuring Docker containers, images, and swarms using docker-compose and Dockerfile.
  • Branching, releasing, and versioning software through GitHub.
  • Managing assets with Amazon S3 buckets.
  • Automating CI/CD services: Sentry, CircleCI, GitHub Actions, Docker Hub, Heroku, CodeCov.
  • 10 years experience with Linux/Unix operations: shell scripting, key management, networking, package management.

Workflows & Methodologies

  • Using GitHub Projects to implement Agile Design and SCRUM practices.
  • Test-Driven Development with unit and integration tests using RSpec & Capybara.
  • Conducting code reviews, doing live feature demonstrations, interviewing and on-boarding new developers.
  • Full-stack development in RubyMine by JetBrains, including deployment, version control, and database operations.
  • Follower of the business & software development practices promoted by Jason Fried, David Heinemeier Hansson, and


Ruby on Rails Developer (March 2018 - November 2018)

Developed back-end and front-end features for 3 commercial apps that provides services for supply-chain management, fishing industry regulations, and provincial catch reporting (1 app in production for 7 years, 2 new apps that were developed and sold).

  • Wrote PostgreSQL queries that power the Supply Chain database, often spanning 50+ lines.
  • Analyzed & optimized PostgreSQL performance in Ruby on Rails.
  • Reviewed 3+ Pull Requests Per Week for a team of 4 Ruby on Rails developers.
  • Followed Test-Driven Development methodology using RSpec, using Capybara for integration tests.
  • Restricted User & Group access to features Devise & Warden.
  • Created reusable UI components using Bootstrap CSS.
  • Shared senior developer duties of Interviewing & On-boarding new developers.
  • Deployed applications on DigitalOcean through Ansible.
  • Configured Amazon Web Services to for hosting images and assets.
  • Handled user support requests and application errors from Sentry within 24-hours.
  • Worked in 2-week SCRUM sprints along with Agile Design workflow that was setup through GitHub Projects.
  • Delivered live presentations to development team when adding new features.


Here's just a few projects I'm proud of. (Click the live link to see them in action!)

Example #1: πŸ›’ Amazon ASIN Lookup

Amazon ASIN Checker
Description: Search Amazon by Product Number without paying for the API
Type: Coding Challenge / For Fun
Live Demo:
Tech Stack: Ruby on Rails, React.js, PostgreSQL, Docker

Example #2: 🐟 KnowYour.Fish

Description: Verified traceability for the seafood supply chain.
Type: Paid Work (Contributor)
Tech Stack: Ruby on Rails, PostgreSQL, Bootstrap CSS

Example #3: πŸš€ SpaceX Flights

SpaceX Flights
Description: Get information on any SpaceX flight in history!
Type: Coding Challenge / For Fun
Live Demo:
Tech Stack: Ruby on Rails, React.js, PostgreSQL, Docker


University of Alberta

University of Alberta
Achievement: Computing Sciences Program 2007
Description: Computer Science challenges and hackathons
Achievement: Achieved 5 stars in Ruby & SQL categories


Contact Information
☎️ +1.778.990.9803
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