Daniel – Typescript, React, AWS

It's a lease-to-own (LNO) application platform, a buy-now-pay-later financing solution embedded at e-commerce checkout.

• Built the customer TypeScript SDK for e-commerce financing checkout and the Shopify Payments App (Ruby/Rails 7), integrating lease-to-own into Shopify checkout with full lifecycle support.
• Designed and maintained the Rails/Grape backend orchestrating 9+ downstream services (risk, credit gateway, lease management, underwriting, merchant portal, Herald, Aperture, LMS).
• Built the Mexico V4 contract system end-to-end: data models, APIs, OpenAPI specs, income validation, OTP via Circulo de Credito, and INE validation.
• Integrated Kipper feature flags across Rails and React to gate new functionality, plus NeuroID behavioral analytics with session capture and underwriting data propagation.
• Integrated VGS tokenization with TokenEx fallback, Plaid for bank linking with A/B testing, Aperture identity verification, and upgraded CCS Kount to prevent fraud disablement.
• Owned the lease application SPA (React 18 + TypeScript + Node.js BFF) for Mexico launch with i18n, Prove Web SDK auth, NAAT verification UI, Optimizely A/B testing, and S3 fallback with Redis rate limiting.
• Built 20+ Terraform modules for multi-AZ RDS, and wrote Playwright, Vitest/Jest, and RSpec tests.

It's an HRIS platform providing HR and safety compliance solutions for businesses.

• Upgraded PHP from 8.0 to 8.2 using Rector and Easy Coding Standard, resolving hundreds of compatibility issues.
• Built Org Chart V2 end-to-end: backend API, hierarchy, jobs, notifications, and frontend with interactive nodes, drag support, undo/redo, indirect reports, and bulk updates for thousands of employees.
• Implemented the performance review system with reviewer assignments, searchable dropdowns, autosave, modals, workflow validation, and Sentry error tracking.
• Developed the training and quiz engine with dynamic passing scores, compliance tracking, video watched detection, certificates, retake logic, and success/failure screens.
• Built the notification matrix for surveys, training, time off, and goal events with configurable recipients.
• Integrated ChargeOver billing, DocSpring document generation, Twilio SMS, and Firebase push notifications.
• Built Playwright E2E tests covering org chart, performance reviews, surveys, goals, employee creation, login, and registration.
• Wrote PHPUnit feature tests with ParaTest for parallel execution across controllers, models, jobs, and services.
• Set up GitHub Actions CI/CD for automated testing, linting, and production deployment to AWS S3 and CloudFront.
• Integrated GA4 conversion tracking, reCAPTCHA, and PDFTron document viewer.
• Fixed cross-cutting bugs across form hooks, modals, dropdowns, and production issues.

It's two interconnected solutions: a campaign management and analytics platform, and a Turborepo monorepo of 13 Next.js traffic-rotator sites that dynamically route visitors to optimized offers via API-driven redirection.

• Architected and built the platform from scratch, migrating from AWS RDS PostgreSQL to SingleStore.
• Designed the abstract service layer and HTTP client base class powering integrations for all 16 ad and affiliate APIs with Monolog-based request/response logging.
• Built the budget adjustment pipeline using Laravel's Pipeline pattern to automate campaign budget changes based on performance data across MediaNet, LotLinx, and Google Ads.
• Built the rotator monorepo from scratch using Turborepo and pnpm workspaces, scaffolding 13 branded Next.js campaign sites with unique logos, domains, and Tailwind themes.
• Developed the core @rotators/utils package with handleRotate on Next.js Edge Runtime, posting to TrafficCopter API with Cloudflare Zero Trust authentication and returning 307 redirects.
• Set up comprehensive testing and CI/CD (GitHub Actions with parallel testing, Laravel Pint, Vapor/Vercel deployment).

It's a vertically integrated e-commerce and optical lab platform for prescription eyewear.

• Led Perl → Laravel 8 + React/Redux migration of e-commerce platform (1,000+ orders/day, ~$45k/day), building GraphQL API, Redis infrastructure, and integrating Braintree, PayPal, Orbital, Amazon Pay.
• Owned e-commerce backend: cart/checkout (4 payment gateways), coupon engine, order management, Algolia search, inventory, Klaviyo, SmartyStreets, ShipStation, home try-on.
• Led C# lab management → Laravel Nova + Vue.js migration: built 21 custom Nova components from Figma and 13 Vue.js SPA tools for receiving, shipping, job failures, frame trace, barcode lens receiving, and invoicing.
• Designed LMS database schema and state machine (50+ tables): jobs lifecycle (13 states), inventory reservation/consumption, 4-tier purchase order system.
• Built lms-connect (Electron + Vue 3) for lab floor: serial barcode scanner management, WebSocket sync via Pusher, thermal label printing via Zebra, and PDF printing.
• Built lms-omav-service (Node.js TCP/IP), CNC lens edging hardware bridge implementing OMAV DCS: parsed 50+ prescription parameters, converted frame trace to 1000-point polar radii, calculated prism, implemented bidirectional ACK handshakes.