Work Experience

Achievements & Responsibilities

• —Led 6-developer team in architecting MARIA AI platform, processing 10,000+ Dominican Republic government procurement documents with Claude 3.5 Sonnet Vision API achieving 95% extraction accuracy and 99.8% Anthropic API compliance, reducing manual review by 40 hrs/week
• —Engineered custom sliding window rate limiter (8 req/min) for Anthropic API; implemented jsonrepair + Zod validation improving extraction success from 75% to 98%; BullMQ job queue with 4 types and exponential backoff reducing processing failures by 80%
• —Built Selenium web scraper for Dominican procurement portal with calendar interactions, pagination handling, dynamic wait strategies, and stale element recovery automating tender downloads from government website
• —Developed Exacto Tech industrial IoT platform with 180+ RESTful API endpoints (Next.js, TypeScript, Prisma, PostgreSQL 25+ models), Apache Solr multi-core system (3 cores) processing 10,000+ inspection records daily with edge-to-cloud sync
• —Created real-time WebSocket dashboards (Socket.IO, AmCharts, Recharts) supporting 100+ concurrent connections with live quality metrics, FPY calculations, and shift performance reports serving 15+ manufacturing facilities
• —Optimized MongoDB queries from 3s to 200ms (93% improvement) through compound indexing; reduced Next.js serverless cold starts from 500ms to 50ms via connection pooling
• —Deployed multi-container Docker infrastructure (Node.js, PostgreSQL, Apache Solr, Python Flask, Caddy) with automated backup system (7-day daily, 4-week weekly, 6-month monthly retention)
• —Established CI/CD pipelines with GitHub Actions and PM2 process management, implementing health check endpoints and service orchestration scripts
• —Built Compass Creator, a full-stack YouTube revenue forecasting SaaS (Next.js 15, PostgreSQL, Drizzle ORM, Redis, BullMQ) — architected a modular 3-provider NextAuth system, a 7-step async BullMQ forecasting pipeline polling an external Python ML API for up to 3.3 hours, and a two-layer Redis caching system with timestamp-based projection invalidation
• —Designed scenario-aware single-query PostgreSQL analytics using Drizzle ORM raw SQL with CASE statements and DATE_TRUNC grouping; implemented admin impersonation via one-time server-side Map tokens injected into NextAuth JWT callbacks, and HMAC-SHA1 signed licensing API integration

Notable Projects

Achievements & Responsibilities

• —Developed AI-powered search and chatbot features using MERN stack with TypeScript, implementing custom API endpoints for intelligent query processing and context-aware response generation
• —Implemented real-time Socket.IO communication for multi-user collaborative features with message persistence, delivery confirmations, typing indicators, and presence tracking supporting concurrent sessions
• —Built comprehensive CRM system with Stripe payment integration, automated invoice generation, and financial reporting, reducing manual data entry by 65% and increasing payment collection efficiency by 40%
• —Automated backend operations with node-cron scheduled jobs for data synchronization, report generation, email notifications, and database maintenance tasks
• —Implemented structured logging (Winston/Pino), error tracking, and performance monitoring endpoints; resolved complex production issues (memory leaks, connection pooling, API timeouts), reducing system downtime by 40%
• —Contributed to microservices architecture design and REST API development with JWT authentication, role-based access control, and request validation middleware

Notable Projects

Achievements & Responsibilities

• —Developed Pokemon Mystery Box e-commerce management platform with AWS Lambda serverless sync, processing 1000+ orders with 99.5% success rate using circuit breaker pattern and exponential backoff retry logic (5 max retries, 3s-30s delays)
• —Built Warrington's Installation Portal with Google Cloud integrations (Maps, Sheets, Drive APIs), implementing AI-powered cost estimation engine with multi-postcode route optimization and 55+ RESTful API endpoints
• —Architected CD Uniform multi-tenant B2B SaaS platform with Cin7 ERP integration synchronizing 30+ price tiers, hybrid payment system combining budget wallet and Stripe, and manager approval workflows managing 7 lifecycle stages
• —Integrated WooCommerce API with AWS Lambda scheduled execution (daily 1 AM UTC cron), implementing Dutch VAT/Margin Scheme tax calculations, Fisher-Yates lucky draw algorithm, and Cloudinary CDN reducing image load times by 60%
• —Designed advanced cost estimation algorithms with Google Maps Distance Matrix API, worker rate databases, vehicle pricing (£/mile), job type multipliers (Emergency: 1.5x, Urgent: 1.3x), and UK postcode validation with 20+ area mapping
• —Delivered full-stack solutions with role-based access control (NextAuth.js), secure authentication, responsive UI design with TailwindCSS/Shadcn, and comprehensive API error handling for international clients (Netherlands, UK)

Notable Projects