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$ cat experiences

Professional experiences and positions

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Infrastructure Engineering Intern

Sep 2026 - Present

Shopify

    Software Engineering Intern

    Jan 2026 - Apr 2026

    Fable Security

    Built scalable media and content customization systems for enterprise security training.

    • → Designed and implemented a PostgreSQL + Redis caching layer to support 8 million+ weekly requests, reducing video generation and delivery time from weeks to hours and furthering platform scalability.
    • → Refactored media upload infrastructure in AWS S3 and Django to optimally serve clients with 100k+ employees.
    • → Built an agentic feature for content customization to 200+ companies, helping book 11 clients at RSAC.
    PythonTypeScriptReactDjangoPostgreSQLRedisAWS S3GraphQL

    Software Engineering Intern

    May 2025 - Aug 2025

    Forbest Product

    Designed and developed a full-stack application to automate and streamline sales prospecting.

    • → Designed and developed a full-stack app to automate and streamline sales prospecting and increase outreach by 10x.
    • → Built a POC and subsequently an end-to-end version using a Django, PostgreSQL, HTTP API, and Next.js.
    • → Received positive feedback from sales teams on the functionality of the applications and increased sales calls by 24%.
    Next.jsTypeScriptDjangoPostgreSQLREST APIAWS Lambda

    Web Designer Contractor

    Feb 2025 - Mar 2025

    TCE Machinery

    Designed and developed the website for TCE Machinery using the Shopify store.

    • → Designed and developed the website for TCE Machinery using the Shopify store
    • → Implemented features using Shopify's Liquid and Liquid Theme Editor
    • → Managed SEO and increased website traffic by 100% and sales by 22%
    ShopifyJavaScriptLiquidLiquid Theme Editor

    Outreach Executive

    Sep 2023 - May 2024

    YRHacks 2024 Hackathon

    Organized Canada's largest high school hackathon, focusing on logistics and outreach.

    • → Organized Canada's largest high school hackathon (450+ hackers, 7+ sponsors) managing logistics and outreach.

    Founder and President

    Nov 2022 - Feb 2024

    Equinox Coding: SpringHacks 2023 & WinterHacks 2024

    Led organization of two virtual hackathons, overseeing finances, marketing, and partnerships.

    • → Manage finances, marketing and lead a team to organize 2 vitual hackathons mid- and post-COVID.
    • → Managed outreach of sponsors and participants to arrange $8000+ in prizes, with 120+ participants.

    Summer Lab Volunteer

    May 2022 - Aug 2022

    University of Toronto, Department of Computer Science

    Supported academic publishing efforts within the algorithms research group.

    • → Proofread and formatted Professor Allan Borodin's book Online and Other Myopic Algorithms.
    • → Corrected errors and provided suggestions to save 60+ hours in the proofreading step.

    Try the terminal on the right →

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    terminal
    Welcome to William Dai's Portfolio Terminal
    Type "help" for available commands
    guest@portfolio:~$