Belen Cobeta

Software engineer · Upper Valley, NH

Family Drives

An app where anyone can add activities and commitments, and parents can easily assign rides and map out routes. Still actively building it — it gets used every day, which keeps me honest about what actually matters.

Your Greatest Sources of Pleasure

An interactive quiz that helps you figure out what actually brings you joy, backed by real behavioral data instead of guesswork. Built the whole thing end to end — survey design, the data crunching behind it, and the front end people click through.

Volunteer web build

Be SMART Upper Valley

Built the website for Be SMART Upper Valley, a local group working on safe firearm storage so fewer kids get hurt. I volunteer with them too — this one's personal.

Clearer Thinking Member Platform

Started as a simple dashboard, turned into the whole membership system — tracking progress, recommending what to try next, and wiring together Stripe, Beehiiv, Mailchimp, and Firebase so subscriptions actually work end to end.

Independent project

Interactive Route App

A trail guide app — walk the route, tap a bird icon, hear its actual call. Built it because I wanted that on my own hikes and couldn't find it anywhere.

IQ Test Research

Dug into data from thousands of participants to figure out whether a popular IQ test actually measures what it claims to. Lots of data cleaning, lots of modeling, genuinely interesting findings.

Dunning-Kruger Effect Simulation

Built a simulation to test a nagging question: is the Dunning-Kruger effect a real cognitive bias, or just what happens naturally when you can't score below zero? Turns out you can get the whole effect from math alone, no faulty thinking required.

Volunteer web build

Richmond Middle School PTO

Built the site for our local middle school's PTO — a small, practical build for a group that needed one.


I'm a software engineer at Dartmouth College. Before that I worked at Clearer Thinking, turning behavioral data from thousands of participants into things people could actually use.

Some of these projects were built at Clearer Thinking, some on my own time. What they have in common is that I loved building every one of them.


WritingAccelerated Learning12 techniques for accelerating learning, published in Medium's Accelerated Intelligence publication.Read on Medium ↗