I build AI-powered products and scalable SaaS systems.

• Architected a large-scale, multi-tenant customer portal enabling industrial clients to view coil inventory, manage orders, and track fulfillment in real time
• Designed and reviewed Oracle database schemas for data integrity, scalability, and high-performance querying across multiple tenants
• Directed NestJS microservices development, enforcing best practices in caching, async processing, and error handling
• Ran regular client and development-team meetings, translating business requirements into technical scope and milestones
• Delivered a production system that passed all client security audits

Tech: Oracle Database, Node.js, NestJS, TypeORM, Custom SQL, React.js, Docker, Microservices, Cloud Architecture (AWS/Azure), CI/CD

• Led architecture, project management, and client communication, directing a team of offshore developers
• Architected a web-based office management system with AI agents handling customer and worker communication, dispatch, and recurring job scheduling
• Designed the backend using NestJS and PostgreSQL, with Redis and BullMQ for event-driven job processing
• Built AI agents using RAG, Google Enterprise ADK, and LLMs, with a Model Context Protocol layer connecting agents to backend tools and data
• Designed a training table used by the AI agent to reference approved responses before communicating with customers
• Integrated Stripe for payments/invoicing and Twilio for SMS notifications

Tech: NestJS, PostgreSQL, Redis, BullMQ, RAG, Google Enterprise ADK, MCP, LLMs, Stripe, Twilio, React.js

• Directed backend, frontend, and QA delivery of a production-grade RFQ/quotations platform
• Defined and prioritized engineering workstreams, reducing manual quoting effort for client teams
• Designed automation features for PDF/Excel export, AI/NLP-assisted item extraction, and vendor/email workflows
• Established code review, CI/CD, and testing practices; tracked KPIs (time-to-quote, error rates) to guide improvement

Tech: Node.js, NestJS, TypeScript, React, PDF/Excel generation, NLP-assisted extraction, Docker, CI/CD

• Designed and implemented a module integrating the Rutter API into financial transaction systems for unified accounting and banking data access
• Integrated Rutter, Stripe, and QuickBooks Online APIs for seamless data synchronization
• Built background job workers for periodic sync, error retries, and real-time updates, with OAuth-based authentication and structured logging

Tech: Node.js, NestJS, TypeScript, PostgreSQL, Rutter API, Stripe API, QuickBooks Online API, BullMQ, Docker

• Built a FastAPI microservice for automated academic research and statistical analysis with OpenAI GPT-4o-mini integration
• Implemented 30+ statistical methods (regression, ANOVA, t-tests, reliability testing) and assumption/outlier diagnostics
• Integrated Server-Sent Events for real-time progress updates and built a PDF/DOCX parser for hypothesis extraction

Tech: Python, FastAPI, Pandas, SciPy, scikit-learn, statsmodels, OpenAI API, Docker

• Acted as Fractional CTO, communicating directly with the client and leading architecture decisions for backend and frontend
• Converted business requirements into technical tasks and sprint plans; documented workflows using UML
• Led architecture using Node.js, NestJS, TypeScript, and React.js, with MySQL database design and Stripe payment integration
• Integrated third-party APIs for document processing and voice-to-text transcription (AWS Whisper)

Tech: Node.js, NestJS, TypeScript, React.js, MySQL, AWS Whisper, OpenAI API, Stripe, Docker, GitHub Actions

• Co-founded and served on the board (25% equity) while leading full-cycle engineering for a cross-platform consumer and merchant system
• Personally developed the iOS app in SwiftUI (MVVM), including Apple/Google/Email login, Apple Maps location-based offers, and dynamic merchant theming
• Led database and API architecture (Node.js, NestJS, MySQL, TypeORM), with offshore developers implementing frontend and API features
• Designed cloud infrastructure on AWS ECS Fargate with Secrets Manager and GitHub Actions CI/CD

Tech: SwiftUI, MVVM, Node.js, NestJS, React Native, MySQL, AWS ECS Fargate, Stripe, GitHub Actions

• Built a Python microservice analyzing historical project documents to estimate pricing for new submissions, integrated into a .NET frontend via REST APIs
• Applied NLP and regression models to correlate new requirements with historical data, reducing manual analysis time by over 70%

Tech: Python, FastAPI, Pandas, OpenAI API, Docker, REST APIs, .NET

• Conceived, designed, and built a consumer iOS app that reached ~300 organic users, using SwiftUI and a NestJS/OpenAI API backend
• Integrated Apple StoreKit subscriptions and AdMob for a recurring-revenue model

Tech: SwiftUI, StoreKit, AdMob SDK, NestJS, TypeScript, OpenAI API

• Reviewed code from offshore developers and provided technical direction for a medical mobile app
• Helped select the technology stack (NestJS API, Flutter, AWS cloud); project was shut down by the owner before launch

Tech: NestJS, Flutter, AWS

• Built a REST API backend (Node.js/NestJS) with JWT authentication and Nylas API calendar synchronization
• Integrated Stripe for booking payments and deployed on Azure with Key Vault-secured configuration

Tech: Node.js, NestJS, React.js, Nylas API, Stripe, JWT, Azure, GitHub Actions

• Built a Swift/UIKit app with local storage, email/Dropbox submission, and in-app PDF document signing

Tech: Swift, UIKit, REST API, Dropbox API, EPSignature

• Built a Swift app using Core ML to classify skin lesions from captured images, with Google login and REST API integration

Tech: Swift, UIKit, Core ML, REST API, Google Login