Nathan Bergman

Java Intern, Back-end Developer

• Completed intensive backend development training focused on Java, RESTful APIs, and enterprise frameworks.
• Built and tested RESTful backend services using Java, Spring Boot, Javalin, JDBC, and SQL.
• Wrote unit and integration tests using JUnit and Mockito; practiced version control with Git and Maven-based builds.

Service Leader

• Run shifts end-to-end managing crew positioning, keeping the line moving, and stepping into any station as needed during peak hours.
• Handle daily inventory counts, product ordering, and waste tracking to keep food costs in check and the line consistently stocked.
• Train new hires on food prep, portioning standards, and safety procedures; hold the team to those standards throughout every shift.
• Handle customer concerns directly, keeping situations calm and guests satisfied without pulling managers off the floor.
• Enforce food safety and sanitation compliance across front and back of house every shift, no exceptions.

Food Service Worker

• Prepped and served meals for large groups in a high-volume camp dining operation, juggling multiple stations simultaneously.
• Coordinated with kitchen staff to keep food timing, quality, and presentation consistent across all service periods.
• Maintained sanitation standards in prep and serving areas throughout service in compliance with health codes.

Grocery Associate & Stocker

• Stocked and maintained high-traffic floor sections, keeping shelves full and displays organized through busy shifts.
• Helped customers with product questions and directed them through the store; known for being approachable and knowledgeable.
• Worked with teammates to hit stocking deadlines and keep the floor meeting store presentation standards.

Dishwasher → Prep Cook → Buffet Server

• Progressed through three roles over three years at an upscale wedding and event venue started in the dish pit, finished running buffet service for formal banquets.
• As prep cook, managed mise en place, food prep, and kitchen organization to support seamless service for large-scale events.
• Delivered attentive, polished buffet service at weddings and banquets with high guest expectations.

Raspberry Pi Systems Project

• Built and configured a Raspberry Pi system running Linux to support custom software, GPIO hardware integration, and basic network services (SSH, system configuration, scripting).

Goblin Fall - Android Mobile Game

• Designed and developed a 2D Android arcade-style game using Kotlin and Jetpack Compose.
• Implemented real-time falling mechanics, collision detection, score tracking, and Firebase AdMob monetization.

Scavenger Hunt App

• Developed a mobile/web scavenger hunt application to help first-year students explore campus.
• Implemented location-based challenges and database-driven progress tracking using React Native, MSSQL, and C#.

User Behavior Modeling for Personalized Ads

• Predicted ad click-through conversions using the IBM Synthetic Advertising dataset.
• Built and compared machine learning models, including LightGBM, XGBoost, Balanced Random Forest, MLP, and stacking ensembles.

Backend Capability: REST API

This portfolio is served dynamically via Express.js. Click below to test the live API endpoint.

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Data Engineering: ML Prediction

Test the mock LightGBM prediction model endpoint based on user behavior inputs.

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