hey, i am arjan.

16yo . security researcher . founder .

i build and break things for a living. at 12 i was building nepfolk, which i never launched. at 13 i co-founded glow tech and scaled it to 10+ clients a month. at 14 i built and exited ggamechamps and hacked google, ea, stanford, shopify, jetstar, nba, msi & more. right now i'm co-founder & cto at heedeo (ef f26), the trust layer for the agent economy. we prevent free trial abuse. also running arniko hack club (400+ members) in nepal.

what i've been up to:

things i've worked on:

side projects:

papers:

merge-based vocabulary extension stalls at the pre-tokenizer: an english-preserving repair for nepali, tested in continued pretrainingai models like llama and qwen read nepali in up to 5.8x more pieces than english, because a hidden rule splits words at every vowel sign. a small fix to that rule makes nepali as cheap as english, without changing how the model reads english.solo author · arxiv 2026 · code · tokenizers for qwen3 & llama 3.2
baselines before architecture: evaluating coding agents for autonomous penetration testingcan off-the-shelf coding agents like codex hack apps on their own? on 104 hacking challenges they already solve a large share, sometimes matching custom-built hacking systems, so new systems should be compared against them first.with ananda dhakal & krish neupane · arxiv 2026 · 60k+ views on x

experience

co-founder & cto · heedeo (ef f26)

jul 2026 — present

security consultant · kallki labs

mar 2026 — may 2026

security engineering intern · shipsecai

dec 2025 — apr 2026

security engineer · stealth startup

oct 2025 — jan 2026

co-founder & cto · glow tech

jul 2024 — dec 2025

founder · nepfolk

jan 2024 — jul 2024

elsewhere