Belen Cobeta

Software engineer · Upper Valley, NH

I build production software: REST APIs, full-stack web applications, and data pipelines that hold up in the real world. I'm currently a Software Engineer at Dartmouth, where I design, develop, and maintain applications for the Advancement division.

Previously, I was a software engineer and researcher at Clearer Thinking, where I built research-backed web applications, ran psychometric analyses across thousands of participants, and designed cognitive assessments.

I care about clean architecture, good API design, and code that does what it says. I've built auth flows, external integrations with Stripe and Firebase, automated workflows, and LLM-enabled features, always with an eye toward maintainability and the people who will use and maintain the system.


Clearer Thinking Member Platform

A member dashboard that grew into a full subscription system — progress tracking, personalized recommendations, and multi-platform entitlements wired across Stripe, Beehiiv, Mailchimp, and Firebase.

FirebaseGCFStripeBeehiivMailchimpSystem architecture

Dating App UX & Matching System

A prototype dating app built on a matching algorithm developed from data collected across over 1,000 real microdates.

UX designRecommendation systemsData-driven designFull-stack

Independent project

Interactive Route App

A prototype geo-based trail explorer where points of interest come alive — tap a bird icon and hear the actual species call, with route data, native fauna, and multilingual support built in.

MappingGeolocationInteractive designMultimediai18n

Cognitive Assessment Tool

A Clearer Thinking cognitive test — item selection, score normalization, and result presentation built for clarity and trust, with a Stripe paywall protecting test integrity.

Back-end developmentStripeAssessment designScore normalization

IQ Test Research

Clearer Thinking research — psychometric validation across thousands of participants, including data cleaning, behavioral modeling, and quantitative analysis to assess what the assessment actually measured.

PandasPsychometricsData cleaningBehavioral modeling

Dunning-Kruger Effect Simulation

Clearer Thinking research — a mathematical simulation testing whether the Dunning-Kruger effect reflects a genuine cognitive bias or emerges from rational estimation under uncertainty, showing it can arise from floor effects and Bayesian reasoning alone.

Mathematical modelingSimulationPandasBehavioral research

Your Greatest Sources of Pleasure

A Clearer Thinking interactive self-assessment guiding users through identifying their primary sources of pleasure and life satisfaction — built at the intersection of survey design, behavioral data analysis, and front-end delivery.

Web developmentData analysisSurvey designGuidedTrack

Volunteer web build

Be SMART Upper Valley

Website built for Be SMART Upper Valley, a community safety organization promoting safe firearm storage to protect children and families across the Upper Valley of NH and VT. I also volunteer with the organization.

Web developmentCommunity

Volunteer web build

Richmond Middle School PTO

A live site built through volunteer work for a local PTO — practical delivery for a real organization.

Web developmentCommunity

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