Tomas User

Performed end-to-end mobile/web development, database design, testing, deployment, and app distribution; designed Supabase schema, realtime data flows, Auth/RLS, service requests, photo/document sharing, scheduling, job-status updates, notifications, and report delivery.

Added rewards and directory functionality to an existing casino rewards application, including coupons and restaurant listings; managed multiple App Store releases.

Implemented personalized exercise, meal, and habit planning, subscriptions, and guided meditations; designed the Supabase schema/realtime model with Auth/RLS and managed multiple App Store releases. Added a web-based admin portal for managing custom user content and settings.

Independent end-to-end product development for web and mobile applications, covering product design, database architecture, frontend/backend implementation, integrations, testing, deployment, app-store distribution, and production support.

Took an AI-assisted prototype to production, designing the Supabase schema, realtime flows, Auth/RLS, and mobile data layer; integrated live order updates, AI photo cost estimation, radius-based job matching, and app-store distribution. Built Supabase Edge Functions for Stripe customer payments and Stripe Connect technician instant and weekly payouts.

Own product design, development, testing, and distribution for multi-tenant booking and operations software; designed the Supabase/PostgreSQL schema, realtime data model, Auth/RLS, estimates, scheduling, messaging, job management, verified pricing/time, reviews, and provider administration.

Managed 4 developers through several major releases; implemented wearable-data integration and coach-client chat, used Bugsnag for production diagnostics, and required a reproducible failing automated test before QA-reported bug fixes. App has 33K+ App Store ratings.

Led a team of 4 developers migrating a legacy Xamarin pickup-and-delivery platform to React Native using an offline-first architecture; clients included Tide Cleaners. Planned deliverables with product and stakeholders, worked with junior developers and QA to meet releases, reverse engineered undocumented legacy behavior, and required failing Jest regression tests before bug fixes; implemented str

Worked with 5 developers on a multi-tenant fitness studio booking/billing/scheduling platform serving ~400 clients; pair programmed, used Datadog for production diagnostics, and collaborated with design for pixel-precise UI.

Architected CI/CD for a multi-tenant, white-label fitness studio app serving ~200 clients and owned iOS/Android releases; used Crashlytics for production issues and troubleshot push notifications end to end across app configuration, AWS SNS, and release environments.

Developed and maintained a white-labeled faith-based charity app, cloned and rebranded for 7-8 organizations.

Enhanced audio player UX and added an internal blog for a legal consulting firm.

Redesigned the interface for an aquatic fitness media player app; added player functionality and integration with device media controls.

Developed an agricultural analytics platform helping growers analyze crop yields, historical trends, and comparisons; optimized SQL Server data access in a Microsoft Azure environment. Built XML, Excel/CSV, and JSON import/export workflows, responsive filtering and data visualization, and helped migrate legacy CakePHP functionality into Laravel.

Built an adoption and fundraising portal for animal rescue organizations, including a custom CMS, animal listings, volunteer/adoption application workflows, email notifications, and responsive administration tools. Implemented website-customization features plus Stripe/PayPal payment and donation processing, and handled remote Git-based deployment.

Built and maintained a custom personalized-gifts ordering system with a live design-as-you-go product preview, integrating Authorize.net payments and dynamic image generation. Developed cross-browser ordering interfaces and worked on SEO, A/B testing, conversion optimization, shipping workflows, and web analytics.

Built independent applications including a fashion-oriented social media platform, a used-college-textbook ordering/exchange system, and telecommunications monitoring software for infrastructure troubleshooting.

Developed debt-analysis software used by loan agents to model debt consolidation and cash-out refinancing for homeowners, including financial calculations and user-facing workflows. Worked within a team of 4 developers and supported the PHP/MySQL application in a Linux environment.

Developed a local events and coupons platform for regional businesses, including scalable city-based content and business listings.

Bachelor of Science in Computer Science from San Jose State University, completed in 2002.