COLE HARTMAN
コール・ハートマン
Hi, I’m Cole…
A growth minded, full stack software engineer with experience building apps and services across many languages and technologies.
My enthusiasm lies in creating software that bridges the gap between complex systems and their demands, delivering robust and scalable solutions.
WORK
Software Engineer Intern at Notion
Incoming SWE intern in San Francisco.
Summer 2026
Software Engineer Intern at GitHub
Rebuilt GitHub's Personal Access Token UI, reducing permission selection time by 40% and cutting input errors by 35%.
Summer 2025
Software Engineer Intern at Converge
Maintained and improved the Electron desktop app, increasing engagement by 48% and reducing deployment time by 70%.
Fall 2024
Software Engineer Intern at Happy Kiln
Led development of the modern e-commerce storefront using Next.js and Shopify’s Storefront API.
Summer 2024
Software Engineer Intern at Pure Mentorship
Modernized company website and improved codebase structure within a 4-person engineering team.
Spring 2024
PROJECTS
Engineered a low-latency brainwave pipeline to compute stress biomarkers and detect overstimulation with LLM-based signal analysis.
OSHA safety violation detection using Google Gemini vision + Supabase. Achieved 96% accuracy across 500+ evaluated site images.
Self hosted cloud service
ME
clicking
I build keyboards because they’re a controllable interface. Sound, travel, and resistance all respond to you. The way I use a computer revolves around the layouts, layers, and ergonomics. I prefer tools that adapt to my workflow, not the other way around.
sounds
I listen to music from many places: bossa nova, jazz, house, Spanish guitar, Masayoshi Takanaka, and everything adjacent. I pay attention to the structure of sound. Repetition, density, transitions, the way it occupies space. Some patterns create a stable environment, others introduce friction. Every sound has an effect on how the mind organizes information. The environment is never neutral.
I listen to music from many places: bossa nova, jazz, house, Spanish guitar, Masayoshi Takanaka, and everything adjacent. I pay attention to the structure of sound. Repetition, density, transitions, the way it occupies space. Some patterns create a stable environment, others introduce friction. Every sound has an effect on how the mind organizes information. The environment is never neutral.
