Portfolio

Deep project showcase

A portfolio log organized by company and engineering architecture to showcase the depth of platform, automation, and modernization work.

SiteMinder Initiatives

  • Platform Modernization & Infrastructure Upgrades (Jun 2026)

    Upgraded supporting infrastructure to newer runtime versions, solving legacy build deadlocks.

  • System Reliability & Error Handling Audit (May 2026)

    Refined event-driven failure loops and implemented resilient deletion routines.

  • Notification Service & Messaging Enhancements (Mar 2026)

    Implemented request formatting and granular filtering logic for product-wide alerts.

  • Reservation & Platform System Enhancements (Feb 2026)

    Streamlined cross-functional UI detail views and core backend booking engines.

SPINS, LLC Enterprise Automation

  • Legacy Powertabs Automation (Apr 2025)

    Created a React admin dashboard accelerating report delivery by 50% and cutting infrastructure overhead by 10%.

  • Welcome SPINS Learning Center (Mar 2025)

    Built a proxy server engine surfacing Confluence CMS attachments, media files, and assets securely to the public within one week.

  • Row Level Security & Access Automation (Feb 2025)

    Engineered an Airflow data pipeline tying Salesforce subscriptions to PowerBI access, replacing manual syncs with single-report granular governance.

  • PowerBI Embedding Admin Management (Jan 2025)

    Collapsed a 2-day manual dashboard embedding process into a 2-click automated portal layout.

  • PowerBI Report Load Testing (Sep 2024)

    Designed an automated Selenium load testing suite comparing architectural capacities, securing 70% cost savings for engineering teams.

  • Spins Digest POC & Rule Engine (Aug 2024)

    Developed a rule-based engine chat service utilizing TypeScript and Node.js WebSockets.

  • Legacy Scorecards Pipeline Automation v1 & v2 (Jul 2024 / Feb 2024)

    Built Airflow pipelines streamlining period releases into a single-button click, cutting release costs by 20% and manual effort by 90%.

  • DSA Reviews Ingestion Pipeline (Oct 2023)

    Built a TypeScript/Node.js PubSub ingestion cluster to process high-volume scraped review data from Amazon and multi-channel platforms.

  • Digital Shelf Analytics Platform & Shared Components (May 2023 / Apr 2023)

    Created global React hooks, standard UI component libraries, and a custom Auth0 wrapper library alongside built-in user mimicking functionalities.

edamama Monolith Refactoring

  • Product Listing & Wishlist Refactors (Dec 2022 / Nov 2022)

    Decoupled legacy monolith modules into high-speed, event-driven microservices.

  • Discount Scheduler Refactoring (Sep 2022)

    Rewrote monolithic scheduler rules to scale active discount campaigns far beyond the historical 50-campaign restriction.

Lab @ Home PH Infrastructure

  • Primary Booking Platform

    Designed and built the primary website from scratch using Ruby on Rails, then developed booking and admin interfaces with StimulusJS and Rails.

  • Internal Automation Tooling

    Created internal Rails and React applications that automated business processes and reduced manual operations by up to 50%.

Open-source / Personal Explorations

  • DYB - Digital Yearbook (2023 - 2024)

    Full-stack Ruby on Rails and React MVP introducing interactive flip-book render engines.

  • OmegaLUL Core Infrastructure (2023)

    Node.js WebSocket messaging platform verified via load testing to sustain over 1,000 concurrent socket connections on minimal footprints.

  • VCT Tournament Outcome Simulation (2024)

    Python web scraping and Monte Carlo simulation script mapping map biases to predict competitive Valorant sports metrics.

Modern engineering focus

This portfolio emphasizes backend systems, platform engineering, developer tooling, and automation work that produced measurable savings and operational improvements.

Platform modernizationCloud infrastructureAutomationReliability

Reach out at ddcmendoza@gmail.com or view my work on GitHub.