Catalin Ilinca

👋 Greetings stranger,

🪪 I'm Catalin Ilinca / Tech Wizard.

❤️ I have a strong passion for technology, gaming and history.

👨‍💻 I've coded in Ruby, Javascript, Node, C#, PHP, Swift, Objective C, Python, Go, R, Visual Basic.

🎮 I'm very interested in Game development, especially in Unreal Engine, and Retro Pixel art.

🫵 Feel free to follow me using the links bellow:

Toptal 2022 - Present

Projects:
- Toptal.com - Senior Software Engineer.
Technologies: Ruby on Rails, GraphQL, Docker, PostgreSQL, Redis, Sidekiq, nodeJS, Typescript, ElasticSearch, Kafka.
Highlights:
- Refactor monolith application, test covering, data migration.

Projects:
- Aircall.io - Senior Software Engineer.
- S4M - Senior Software Engineer.
- SWRVE.com - Senior Software Engineer.
Technologies: Ruby on Rails, GraphQL, Docker, AWS, MySQL, Redis, Sidekiq, nodeJS, Typescript
Highlights:
- SWRVE - developed platform audit tool using Ruby on Rails and MySQL.
- Aircall.io - refactor / redesign monolith application to micro services, test covering, data migration.

Projects:
- app.raportare-fepra.ro - System Architect.
Technologies: Ruby on Rails, GraphQL, Docker, AWS, Blockchain, MySQL, Redis, Sidekiq, ReactJS, nodeJS, nginx, Memcached, haproxy.
Highlights:
- Continuous development and Integration using GitHub, Jira, CodeShip, Docker and AWS EC2.
- Blockchain integration with Ruby on Rails API.
- PDF and Graphic manipulation and generation.

Tech Lead with many accomplishments:
- Infrastructure migration form Metal to AWS Cloud.
- Redesigning monolith platform to micro services.
- RSpec tests for previously 0% covered application.
- Team mentor of 5-9 members.
- Designing Development Flow.
- Stress testing and uptime optimisation.
- Backup and Data integrity.
- Data protection and security.
Technologies: Ruby on Rails, MySQL, Redis, Memcached, Sidekiq, nginx, python, javascript, AngularJS, AWS Lambda, DynamoDB.
Highlights:
- Outage handling and recovering, including a “hot production database drop”.
- BlackFriday scaling with 99.99% uptime and traffic ingestion.
- Statistics module rewrite using ETL techniques and processes.
- Designed and implemented a resilient infrastructure without any single point of failure, with failsafe and recovery instances for every critical service.
- Ingested more than 5m unique clicks / month and peaks of more than 2m clicks / day (on special events).

Ruby on Rails developer.
Technologies: Ruby on Rails, MongoDB, PostgreSQL, Sphere.io.
Highlights:
- Database layer migration from MongoDB to PostgreSQL.
- Unified mobile - desktop shopping cart.

Lead Developer for intuo.io.
Successfully pushed the platform in the early stages of the seeding rounds.
Technologies: Ruby on Rails, EmberJS, Rspec, Capistrano.
Infrastructure: Azure Cloud.
Highlights: platform architecture migration from a single tenant design to a multi-tenant design.

Lead Developer and System Architect for www.2parale.ro, migrated to 2performant.com, the biggest Affiliate Marketing platform in Romania.
Technologies: Ruby on Rails, Sinatra, RSpec, MySQL, MongoDB, HTML5, Angular.js, jQuery, CoffeeScript, Memcached, Solr, Sphinx, nginx, Puma, Unicorn, Capistrano.
Infrastructure: multi MySQL server configuration, multi Redis/Sidekiq configuration, MongoDB cluster and HTTP load balancing.
Highlights:
- Product Feed parser using Ruby on Rails, Sidekiq.
- iOS application using Objective C.
- Upgrade legacy code from Ruby 1.9.3 to 2.2.x and from Ruby on Rails 3.x to 4.x.

Ruby on Rails Lead Developer.
Software development for different US customers like McDonald’s US and stylitics.com.
Technologies: Ruby on Rails, RSpec, Cucumber, MySQL, PostgreSQL, MongoDB, Redis, Twitter Bootstrap, Zurb Foundation, jQuery, d3.js, Underscore.js, Mustache, Backbone.js, Ember.js, Memcached, Unicorn, Puma, nginx, HTML5, R, Git, Photoshop, Adobe Flash.
Highlights: custom data visualisations using Ruby on Rails, R and d3.js.