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Tony Barreto
Mid-Level Full-Stack Software Developer specializing in modern web apps
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Product-focused full-stack builder who has shipped and operated multiple production apps from scratch, including an e-commerce bakery delivery scheduler (with concurrency controls and timezone handling) and a real-time passenger music-request system for Lyft rides that hit and resolved YouTube API rate-limit scaling issues via debouncing and caching. Strong in React+TypeScript and Node.js/TypeScript backends, with solid PostgreSQL/PostGIS data modeling and performance tuning.
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Key Strengths
- Shipped end-to-end customer-facing features (DB schema → backend validation → frontend UI) for e-commerce delivery scheduling
- Concurrency/overbooking prevention using optimistic locking with re-validation at checkout
- Strong product/UI engineering focus (80% app-layer) with polished UX patterns (skeleton loaders, disabled states, graceful empty/slow-network handling)
- Designed and optimized PostgreSQL/PostGIS models for ride-booking/dispatch (indexes for key query patterns, EXPLAIN ANALYZE, constraints, migrations, selective denormalization)
- Handled real production scaling incident: mitigated YouTube API rate limits via debouncing (~60% reduction) and caching (~70% additional reduction)
- Built real-time passenger-facing music request/voting/queue system used by 100+ passengers
Reference Highlights
- Diligent
- On-time delivery
- Consistently top-notch quality
- Strong understanding of technical problems/issues
- Excellent Python backend engineering
- Good understanding of algorithms and programming language
- Good React and UX knowledge
- Handled feedback well
- Excellent SQL and data modeling skills
- Invested time in query performance
- Good AWS/cloud knowledge
- Resolved on-call and production issues
- Responsible
- Strong ownership of product work
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