Danial Mohazab Email & Phone Number

Toronto, ON, CA

Toronto, Ontario, Canada

Acquired from Shopify

• Development and optimization of solutions on the order visibility team as part of the Shopify Fulfillment Network, enabling merchants more visibility on order fulfillment that is offloaded to Shopify centers
• Optimized database queries in Ruby on Rails by developing a batch loader to eliminate existing and future N+1 queries, increasing efficiency of calls by up to 8x on average

Cupertino, California, United States

• Drove development of a new pronunciation feature from ideation by conducting initial user research, defining product requirements, and leading product reviews with the Siri leadership team
• Improved feature ML models from 48% to 89% accuracy by streamlining additional data collection and annotation
• Developed high-level technical architecture that facilitated resourcing required to achieve quarterly key results

Remote

• Enhanced order cancellation using Ruby on Rails and GraphQL by leveraging courier APIs to identify granular cancellable states, eliminating 200+ support tickets per week and providing merchants more time to cancel orders
• Redesigned order validation to allow orders with missing information to be ingested and held for user action rather than declined, improving order retention of an average of 300 orders per week
• Refactored the Shopify Fulfillment Network back-end architecture and order flow to support subscriptions

Waterloo, Ontario, Canada

• Implemented a feature enabling 5000+ enterprise users to copy all client-facing UI and UX across store locales using Ruby on Rails and GraphQL, giving merchants the opportunity to start new storefronts quickly
• Developed an API job request throttle using the leaky bucket algorithm by storing rate limit consumption in Redis and constraining bucket capacity to 60%, avoiding rate limiting errors when transferring data
• Wrote unit tests in RSpec and Ruby to improve code coverage by 28% on a new store creation flow

Toronto, Canada Area

• Developed a back-end application in Python and Pandas to process and serve distribution data required for package delivery, saving Logistics 30+ hours/week and affecting all Canadian consumers
• Created a GraphQL API layer using Flask for a MySQL database to avoid multi-application direct database access
• Redesigned back-end architecture by developing worker AWS lambda functions for APIs to promote failure isolation and scalability
• Led operations team DevOps process by dockerizing and deploying applications to GitLab CI/CD pipelines using Kubernetes

Toronto, Canada Area

• Developed a RESTful microservice in Java using Spring that serves OANDA platforms with Dow Jones news articles in real-time
• Integrated a feature in Java that applies user-triggered threading to update stock units in real-time for OANDA’s desktop platform
• Refactored exchange rate chart endpoint query to reduce stock rate data load time on trading platforms by 32%

Toronto, Canada Area

• Created an ML model using TensorFlow to predict mortgage funding likelihood at 97% accuracy for loan filtering
• Constructed the server-side processor of an internal attendance tracking application in Python that replaced a paper-based model
• Created automation scripts using Python and Selenium for an agile website redesign project, reducing production launch time by 50%

Waterloo, Ontario