Frederick Stewart

Summary

Six years building .NET APIs, manufacturing systems, and AI integrations for manufacturers, utilities, and lenders. Available for part-time contract work — evenings and weekends.

What I do

• AI & LLM integration
• Industrial & manufacturing systems
• .NET & API modernization
• End-to-end product build

Selected work

• A raffle platform that runs a whole event from a phone

  My own product — live · 2026 — A live product that runs a full event end to end — catalog, ticket sales, allocation, the draw and winner notification — on hardware the volunteers already own.

• An internal agent and MCP platform for a manufacturer

  An industrial products manufacturer · 2026 – present — Internal teams get AI tooling that reads and acts on real business systems, and each new use case composes servers that already exist instead of starting another integration from zero.

• Consolidating a utility's .NET estate, and putting AI identity verification inside it

  A Fortune 500 utility · 2023 – 2025 — One service where there had been several, on a schema chosen for current requirements rather than inherited, and identity verification handled by a provider built for it — with credentials out of source control and enough telemetry to debug a failure without exposing customer documents.

• Legacy shop-floor C++ applications folded into one MES

  An industrial materials manufacturer · 2020 – 2021 — One system covering the entire manufacturing cycle in place of many, with per-user layouts that follow operators between terminals, and a department trained on modern source control and CI.

• Credit decisioning rules that change when the law does

  An auto finance lender · 2022 – 2023 — Rule changes shipped with demonstrable coverage instead of assumed coverage, and the business side stopped waiting on a DBA to add a field.

Background

• 2026 – present · Internal AI agent and MCP platform — An industrial products manufacturer
• 2023 – 2025 · Contract software engineer — A Fortune 500 utility, via a national staffing firm
• 2021 – 2023 · Contract software engineer — An auto finance lender, a bulk transport carrier, and a regional food producer
• 2020 – 2021 · Software engineer — An industrial materials manufacturer
• 2020 · Full-stack .NET software engineering — Tech Elevator, Cleveland
• 2015 · CNC machinist — A precision machine shop — improved grinding productivity by 30%
• 2010 – 2014 · United States Marine Corps — Corporal — F/A-18 jet engines and fuel systems

Technologies

.NET · .NET 6 · .NET 8 · Anthropic API · Azure DevOps · C# · C++ · Cloudflare Workers · CQRS · D1 · DevExpress · Entity Framework · Git · Hono · HttpClient · IFS ERP · Model Context Protocol · MS SQL · MSTest · OLE DB · Oracle · Progress Corticon · R2 · REST · Stripe · SvelteKit · Twilio · TypeScript · Visual Studio 2022 · Zod