Hi, I'm
Diya Vij
I graduated from UC Berkeley in May 2026 with a degree in Applied Mathematics & Statistics and a minor in Data Science, and these days I'm working on building ML-powered products end to end, from the data pipelines and models all the way to the apps people actually use. I like working where engineering, machine learning, and messy real-world problems meet!
About
At my internship last year at Regeneron I shipped a two-path RAG pipeline over PubMed, ClinicalTrials.gov, and UK Biobank that turned a multi-day research task into a minutes-long query for 50+ researchers, and I also trained XGBoost models on wearable time series to catch disease progression. Right now I'm building a reasoning-audit agent with a hand-rolled Claude tool-use loop and its own calibration-aware eval harness, plus Journal, a mobile-first AI journaling app built on React Native, Supabase, pgvector, and the Claude API, and Roseyflow, a Bayesian cycle tracker.
I like building things, and I like people. I spent the last two years helping run Cal Hacks, the world's largest collegiate hackathon, as Marketing Lead & Internal VP of Hackathons @ Berkeley, which meant everything from helping to plan a $1M+ budget with 30+ organizers to personally filming the TikToks, and I was active in the mathematics community on campus as an officer of the Mathematics Undergraduate Student Association. Teams are where I do my best work.
Outside of work I read a lot (philosophy, math, philosophy of math, fiction, science — my shelf is here), I write essays sometimes, and I love Star Wars. This site used to have a Millennium Falcon flying across every page. It's gone now, but it lives on in spirit!