Abstract background image

Arnav Chhajed

17 | Experiencing time-blurs through Mathematics & AI

About Me

AI and Math Romantic

Currently exploring AI (now - trying to building an LLM from scratch), model architectures, optimization, and agentic design, guided by Stanford's CS336 and MIT OCW, Coursera, Brilliant and other resources.

Studying advanced Mathematics and Physics for Olympiads, JEE Advanced, and just for fun through books, Mathacademy, Brilliant, and other resources.

Connections are beautiful — unexpected ones even better 🤍

The thrill of discovering how seemingly distant ideas fit together in perfect synchronicity to perform something elegant is peak.

Open to collaborations, discussions, and anything interesting.

Selected Projects & Internships ❤️

Parkinson's Detector
Motivated by family history, an early-screening app using vocal/acoustic markers for low-cost preclinical triage for Parkinson's disease.
Farm Assistance App
Highly motivated by high farmer suicide rates in birthplace, built an AI-powered advisory app that provides sustainable crop suggestions to improve farm income; simulated ~5% lift in farm income with localised advice.
AI Intern @ Pigeepost
An AI intern project to create an AI sales agent and the initial framework (20–50x faster than humans*) that generates, enriches, and parses sales leads for personalized outreach.
Astrophysical Transient Discovery with AI
Working with a team to build unsupervised AI models for analyzing LSST's ~10M nightly alerts for rare astrophysical events.
Gamified Productivity Website
Inspired by duolingo; a platform turning to-dos into quests, with mechanics (XP, streaks, rankings) that drive measurable gains in focus and consistency. (Private beta)
Others
A collection of side projects spanning AI, science communication, writings, and student initiatives.

Things I Enjoy

Reading

Reading and reflecting on self-help, philosophy, psychology, history, and personal growth books to develop new insights and formulate my own perceptions.

Journaling & Writing

Using writing when thinking becomes heavy, to articulate insights from books, and explore interesting topics like responsiblity, rationality, intuition, consciousness etc.

Meditating

Practicing Jhana and Vipassana meditation to attempt at gaining mental clarity, understand my inner voice, and realize my responsibilities.

Playing Softball

Competed in softball up to the state level, enjoying the teamwork and competitive spirit of the sport.

Student Leadership

Served as Head of the Student Council for 4 years, focusing on reforms that resonated with everyone; bridging the gap between faculty and students.

Teaching (& learning with others)

Teaching is always a good feeling.
Loved teaching - especially math to peers, juniors, clubmates and specially using sign language for the differently abled.

Others

Painting, sketching, designing; cricket & football; calisthenics; building stuff (useful or just fun); occasional gaming/watching; vibing on music; and of course - admiring Hrithik Roshan. 😳

Achievements

International Olympiads

Enjoyed competing in Math, Science, and Cyber Olympiads, earning a few international ranks (<500) and 14 gold medals over the years (2014–22)

Academics

Maintained Rank 1 for four consecutive years.
Grade IX: 99.20%
Grade X: 98.6%
Grade XI: 99.40%
Grade XII: 98+% (predictive)

CBSE Grade X Global Achievement

Ranked 7th internationally among 2.25 million students with a score of 98.60% (Core 5 subjects, higher otherwise).

Standardized Testing

SAT: 1540 (first attempt, low-prep)
AP Scores:
5 in Calculus BC
5 in Chemistry
5 in Physics C: Mechanics (all self-studied)

Brilliant.org & Mathacademy

Ranked in the Top 1% out of over 10 million global learners on problem-solving platforms, achieving 90 percentile in Mathacademy within 2 months.

Competitive Challenges

2x Selected as top 100 students Nation-wide in the Aryabhatta Mathematics Challenge from my region; qualified for the Homi Bhabha Balvaidnyanik Examination both levels two times.

Community Service

Taught math using sign language and organized fundraising drives - convincing families to spend on Braille kits and hearing aids for Apang Vidyalaya instead of fireworks. Raised ₹20,000 to support students in need.

Others

Explored and achieved a mix of things I’ve enjoyed over the years — from winning school debates, city robotics, and conservation drives, to singing, math contests, Kaggle challenges, online courses, mit hackathon, and more intriguing things.

Media

Breakthrough Junior Challenge Submission

First Project

Intial Projects 😭