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Hands-on full-stack engineer with 17+ years building and scaling web, mobile, payments, and AI products. Co-founded and architected Goodfynd, a multi-tenant FinTech SaaS platform processing $23M+ across 2,000 vendors with sub-$3K monthly AWS spend and 99.999% uptime. Focused on real-time, high-reliability product experiences, applied AI (extraction, RAG, structured outputs, multimodal workflows), and mentoring engineers. Enjoys building from architecture to implementation—React/TypeScript frontends, .NET/Node backends, payments/identity integrations, and strong CI/CD with excellent test coverage.…Hands-on full-stack engineer with 17+ years building and scaling web, mobile, payments, and AI products. Co-founded and architected Goodfynd, a multi-tenant FinTech SaaS platform processing $23M+ across 2,000 vendors with sub-$3K monthly AWS spend and 99.999% uptime. Focused on real-time, high-reliability product experiences, applied AI (extraction, RAG, structured outputs, multimodal workflows), and mentoring engineers. Enjoys building from architecture to implementation—React/TypeScript frontends, .NET/Node backends, payments/identity integrations, and strong CI/CD with excellent test coverage.

Lemaire Stewart

Full Stack Developer, Software Engineer, Back-End Developer, +2

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Hands-on full-stack engineer with 17+ years building and scaling web, mobile, payments, and AI products. Co-founded and architected Goodfynd, a multi-tenant FinTech SaaS platform processing $23M+ across 2,000 vendors with sub-$3K monthly AWS spend and 99.999% uptime. Focused on real-time, high-reliability product experiences, applied AI (extraction, RAG, structured outputs, multimodal workflows), and mentoring engineers. Enjoys building from architecture to implementation—React/TypeScript frontends, .NET/Node backends, payments/identity integrations, and strong CI/CD with excellent test coverage.…Hands-on full-stack engineer with 17+ years building and scaling web, mobile, payments, and AI products. Co-founded and architected Goodfynd, a multi-tenant FinTech SaaS platform processing $23M+ across 2,000 vendors with sub-$3K monthly AWS spend and 99.999% uptime. Focused on real-time, high-reliability product experiences, applied AI (extraction, RAG, structured outputs, multimodal workflows), and mentoring engineers. Enjoys building from architecture to implementation—React/TypeScript frontends, .NET/Node backends, payments/identity integrations, and strong CI/CD with excellent test coverage.

Available to hire

Hands-on full-stack engineer with 17+ years building and scaling web, mobile, payments, and AI products. Co-founded and architected Goodfynd, a multi-tenant FinTech SaaS platform processing $23M+ across 2,000 vendors with sub-$3K monthly AWS spend and 99.999% uptime.

Focused on real-time, high-reliability product experiences, applied AI (extraction, RAG, structured outputs, multimodal workflows), and mentoring engineers. Enjoys building from architecture to implementation—React/TypeScript frontends, .NET/Node backends, payments/identity integrations, and strong CI/CD with excellent test coverage.

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Work Experience

Creator & Principal Engineer at Hard Cap Trades (Independent Project)

January 1, 2020 - Present

Built and deployed a constraint-based NBA trade-search engine that constructs legal packages under salary-matching, tax/tax-apron, aggregation, signing, roster, and draft-pick rules. Implemented a Turborepo/pnpm monorepo with React/Vite/Material UI and NestJS, backed by a shared TypeScript rules engine. Created ingestion pipelines for contracts, cap state, player statistics, dead money, and pick ledgers, with substantial Vitest coverage and CI/CD gated deployments.

Creator & Principal Engineer at Production Meintenants (Independent Project)

January 1, 2019 - Present

Architected and deployed a production property-management platform using a Turborepo/pnpm monorepo (React/Vite/Next.js, NestJS, MongoDB, Redis/BullMQ, Socket.io). Implemented ledger-based billing with Stripe Connect Express and ACH Financial Connections, including separate charges/transfers, FIFO allocation, autopay, late fees, and ACH return/dispute recovery. Built and shipped multiple AI workflows using Gemini and OpenAI (extraction, triage, cost estimation, response drafting, pricing recommendations) and improved prompt design to reduce triage model costs dramatically. Established strong automated testing coverage with Jest/Vitest.

Co-founder & Principal Engineer at Goodfynd

January 1, 2018 - January 1, 2026

Architected and built a multi-tenant FinTech SaaS platform using React, React Native, .NET Core, MongoDB, AWS, Auth0, and Stripe Connect. Owned the consumer and POS React Native apps end-to-end, including integrations with card readers and Star printers, kitchen display, and kiosk mode. Scaled vendor footprint from ~25 to ~2,000 and processed $23M+ with 8.5% blended take rate while sustaining 99.999% uptime and AWS costs under $3K/month. Implemented granular RBAC and audit logging with secure, PCI-compliant payment workflows. Built Google Maps vendor discovery and embeddable schedule maps, plus KML/GeoJSON territory tooling. Launched FyndAI: an event-discovery pipeline using GPT/Gemini with scraping, structured extraction, and deduplication (100–300 events/city/month). Led design-system development and mentored/hired 12 engineers/designers while remaining an active IC; supported architecture presentations for a $10M financing round.

Senior Software Engineer at EPAM Systems (Sitecore Practice)

January 1, 2015 - January 1, 2019

Led front-end e-commerce builds for Mary Kay and Lowe’s, heading teams of up to five engineers per project. Developed back-end Sitecore solutions in .NET/C# with SQL Server and MongoDB. Built custom search using Solr and Coveo, supporting e-commerce and content-driven experiences.

Sitecore Developer at NavigationArts

January 1, 2013 - January 1, 2015

Delivered Sitecore/ASP.NET solutions for National Aquarium, AvalonBay Apartments, and other commercial clients after the acquisition by EPAM (July 2015).

Software Engineer, Senior Consultant at Booz Allen Hamilton

January 1, 2009 - January 1, 2013

Engineered .NET/C#/Entity Framework web applications for USPHS, DoE, DoD, HHS, NIJ, FAA, and ARPA-E under Top Secret clearance. Delivered Section 508/WCAG-compliant interfaces as a project requirement. Built CMS solutions with ASP.NET, Drupal, Sitefinity, and DNN, plus jQuery/JavaScript and interactive Google Maps experiences.