Elliot En-Yi Liu

Elliot En-Yi Liu is a competitive programmer and engineer who represented Taiwan at the International Olympiad in Informatics, winning a gold medal at IOI 2022 (19th, 470.48/600) and a silver medal at IOI 2021 (38th), plus an APIO 2021 gold. He studies EECS at MIT and works as a Human Engineer at Cognition.

Notes6

• Works as Human Engineer at Cognition, the company behind Devin, the autonomous software-engineering agent - a small, high-profile AI lab; an MIT EECS student going from competitive programming and ML internships (Stripe, Pika, Genesis Therapeutics, MediaTek Research) directly into frontier AI tooling.Sep 11, 2026
• Won IOI 2022 gold at rank 19 (470.48/600) and IOI 2021 silver at rank 38, both for Taiwan - among the strongest competitive-programming records in his cohort, with an APIO 2021 gold on top.Aug 15, 2022
• Competes as Codeforces handle 'balbit' and LeetCode handle 'elliotliu123' (LeetCode profile lists codeforces.com and Taiwan as location) - the same handle anchors his GitHub account github.com/balbit, which lists name 'Elliot Liu' and 17 public repos.Sep 11, 2026
• The X/Twitter handle @elliotliu123 is attributed to 'Elliot Liu' posting about 'building @cognition' and Devin, matching his Cognition role and MIT/IOI background.Nov 13, 2025
• Runs a free advanced-Scratch course marketed as 'IOI Medalist Teaches Advanced Scratch' on HackMD under the balbit handle - showing an early bent for teaching/community outreach in competitive programming.Sep 11, 2026