Jonah Ellis

Software Engineering Intern

Seattle, WA, United States

Professional Summary

Computer science junior at the University of Washington seeking a software engineering internship. Built full-stack side projects with React, TypeScript, and Node.js, and contributed bug fixes to open-source CLI tools. Comfortable with Git, code review, and shipping small features under mentor guidance.

Employment History

Software Engineering Intern

Cascade Labs Systems · Seattle, WA

Jun, 2025 · Aug, 2025

• Shipped 4 React/TypeScript UI components for an internal dashboard used by 60+ engineers; cut average ticket triage time by ~18% in pilot teams. • Wrote Jest + Playwright tests covering the new forms flow (92% line coverage on touched modules). • Fixed 12 bugs in the Node.js API layer and documented reproduction steps in Linear. • Pair-programmed twice weekly with a senior mentor; presented a 10-minute demo at the end-of-summer intern showcase.

Undergraduate Research Assistant

UW Allen School HCI Lab · Seattle, WA

Jan, 2025 · May, 2025

• Prototyped a browser annotation tool in React for a study with 28 participants. • Cleaned and visualized survey CSV data in Python (pandas + matplotlib) for two weekly lab meetings. • Co-authored a methods appendix for an internal tech report on annotation latency.

Barista / Shift Lead

Harbor Roast Coffee · Seattle, WA

Sep, 2023 · Dec, 2024

• Led closing shifts 3 nights/week; trained 6 new baristas on POS and drink standards. • Reduced cash-drawer variances by enforcing end-of-shift checklist; zero write-offs in final quarter. • Built a simple Google Sheets inventory tracker that cut weekly stockout incidents.

Education

B.S. Computer Science (expected Jun 2027)

University of Washington · Seattle, WA

Sep, 2023 · Jun, 2027

GPA: 3.72 / 4.00 Relevant coursework: Data Structures, Algorithms, Web Development, Databases, Software Design

Skills

TypeScript

JavaScript

Python

SQL

React