Ready for what's next

Application Developer & ERP Engineer

I help businesses run more efficiently by building things that actually work: custom Sage X3 modifications, third-party integrations, SQL reporting pipelines, and Power BI dashboards. Certified X3 developer, big fan of clean documentation, and genuinely enthusiastic about using the right tool for the job.

Get in touch View my work
Experience

What I've built

Five years of turning business requirements into working software — from gaming labs to ERP consultancy.

Application Developer
Apr 2023 – Present
RKL eSolutions
  • Build custom modifications and integrations for Sage X3 clients across distribution and manufacturing industries
  • Develop third-party integrations with platforms including ShipStation, Centage, Optimal Answers, iDoc, and others using .NET, PowerShell, SFTP, and X3 web services
  • Scope and deliver projects ranging from small configuration tweaks to full ground-up custom integrations
  • Work closely with project managers to translate functional requirements into development work
  • Support consulting and technical teams on advanced issues and maintain thorough documentation
SQL Report Writer & Data Analyst
Nov 2022 – Apr 2023
Gaming Laboratories International
  • Built and maintained a portfolio of 20+ SSRS reports, SSIS packages, and Power BI dashboards
  • Built data pipelines to support operational reporting across the organization
  • Designed advanced dashboards to surface insights for executive decision-making
  • Wrote highly optimized SQL queries and complex stored procedures to power reporting across the organization
  • Delivered detailed dashboards that gave leadership a clear view of business performance
Test Engineer II
Jul 2021 – Nov 2022
Gaming Laboratories International
  • Wrote test plans and performed hands-on testing of slot machines and electronic table games for regulatory compliance
  • Evaluated devices against jurisdictional standards across a range of gaming hardware
Application Developer Intern
Summers 2018 & 2019
RKL eSolutions
  • Worked alongside a senior developer on both existing client projects and new builds in Sage X3
  • Picked up new tools and platforms quickly to contribute to real client work from the start
Skills

Tech I work with

Mostly ERP and data tooling, with enough scripting knowledge to automate whatever's slowing things down.

ERP & Languages
Adonix 4GL Sage X3 C++ Python
Data & Reporting
T-SQL SSMS SSRS SSIS Power BI PowerQuery
Integrations & APIs
.NET GraphQL PowerShell SFTP Web Services
Certifications
Sage X3 Certified Developer
Education

Where I studied

Studied CS in the Nevada desert, picked up a taste for data along the way.

B.S. Computer Science & Engineering
University of Nevada, Reno
Minor: Mathematics Minor: Big Data
2021
Personal

Outside the terminal

When the laptop is closed, here's where you'll find me.

🚴
Endurance Cycling
Most weekends I'm out for 50 to 80 miles on whatever mix of road and gravel looks good on the map. No races, no Strava segments to chase. Just good miles and the occasional gas station snack stop.
🏓
Table Tennis
I've been playing for a couple of years and I'm fully in on the equipment side. Currently running a Stiga Legacy Carbon blade with Skyline 3 rubbers. I actively seek out competitive games, which is a polite way of saying I will challenge basically anyone I see near a table.
🍵
Chinese Tea
Full gongfu setup, proper teaware, and a strong preference for pu'erh. Ripe is my usual go-to. It's a slow process and that's entirely the point. Twenty minutes of doing nothing except paying attention to tea is genuinely good for you.
⚡
Personal Productivity
I build complex spreadsheets for just about everything: finances, fitness, cycling stats, and whatever else needs a good tracking system. I'm also a heavy Claude user and genuinely enjoy finding new ways to get the most out of AI in day to day life.
Contact

Let's connect

Open to freelance work and other interesting opportunities. If you have something worth talking about, I'm easy to reach.

Email jacob.spreitzer at gmail dot com Phone (702) 503-8373 LinkedIn jacob-spreitzer