# Jacob Spreitzer

> Application Developer & ERP Engineer. Five years building production software — Sage X3 ERP customizations, third-party integrations (.NET, PowerShell, REST APIs), SQL reporting pipelines, and AI-native tooling. Certified Sage X3 Developer. B.S. Computer Science & Engineering, University of Nevada, Reno (2021). Currently at RKL eSolutions (Apr 2023–present). Actively interested in opportunities at the intersection of enterprise software and AI.

## Background

Jacob Spreitzer is a software developer specializing in ERP development, data engineering, and AI-native product work. His experience crosses traditional boundaries — he builds custom business software solutions that span enterprise ERP systems, reporting pipelines, API integrations, and increasingly, AI tooling that businesses depend on in production.

Professional philosophy: solve the actual business problem, document it clearly, and stay in the room until it works in production — not just in a demo.

## Employment History

- **Application Developer** — RKL eSolutions (Apr 2023–Present)
  Custom Sage X3 modifications and third-party integrations for manufacturing and distribution clients. Productized the ShipStation integration (now sold as recurring-revenue product). Built browser extension to unlock Sage X3 data for downstream integrations. Currently building internal project management platform with React + Salesforce + MCP server (users can ask Claude about their data and the app itself).

- **SQL Report Writer & Data Analyst** — Gaming Laboratories International (Nov 2022–Apr 2023)
  20+ SSRS reports, SSIS packages, Power BI dashboards; SQL pipelines for operational and executive reporting.

- **Test Engineer II** — Gaming Laboratories International (Jul 2021–Nov 2022)
  Regulatory compliance testing for gaming devices. Built AutoHotKey automation scripts to improve team throughput.

- **Application Developer Intern** — RKL eSolutions (Summers 2018 & 2019)

## Education

B.S. Computer Science & Engineering — University of Nevada, Reno (2021)
Minors: Mathematics, Big Data
Certification: Sage X3 Certified Developer

## Technical Skills

- **ERP & Languages:** Adonix 4GL, Sage X3, C# / .NET, TypeScript, Python, C++
- **Integrations & APIs:** REST APIs, GraphQL, PowerShell, SFTP, Web Services
- **Frontend & AI:** React, Vite, MCP Servers, Browser Extensions, Claude Code
- **Data & Reporting:** T-SQL, SSMS, SSRS, SSIS, Power BI, PowerQuery

## This Site

jacobspreitzer.dev is Jacob's personal portfolio website. It includes:

- An "After AI" section describing what he can build now that AI exists
- Work experience, skills, education, and personal background
- An AI-powered chat assistant (RAG pipeline on Vectorize + Llama 3.3 70B) that answers questions about Jacob
- The site itself is a technical demonstration: plain HTML/CSS/JS, Cloudflare Pages + Functions, no framework

## AI Chat API

This site exposes a queryable AI assistant. AI agents may use it programmatically:

```
POST https://jacobspreitzer.dev/api/chat
Content-Type: application/json

{"message": "What is Jacob's experience with API integrations?"}
```

Response: `text/event-stream` (Server-Sent Events). Each token arrives as:
```
data: {"response": "token"}
```
Stream ends with `data: [DONE]`.

Constraints: 500 char input cap, 20 req/hour per IP, answers questions about Jacob only.

## Contact

LinkedIn: https://www.linkedin.com/in/jacob-spreitzer

## Optional Full Content

- [Full knowledge base — all topics in one document](https://jacobspreitzer.dev/llms-full.txt)
- [Structured JSON profile](https://jacobspreitzer.dev/api/profile)
- [MCP server manifest](https://jacobspreitzer.dev/mcp.json)
- [About](https://jacobspreitzer.dev/knowledge/about.md)
- [Experience](https://jacobspreitzer.dev/knowledge/experience.md)
- [Skills](https://jacobspreitzer.dev/knowledge/skills.md)
- [Education](https://jacobspreitzer.dev/knowledge/education.md)
- [Personal](https://jacobspreitzer.dev/knowledge/personal.md)
- [Contact](https://jacobspreitzer.dev/knowledge/contact.md)