Cash DeLeon

Software engineer with eight years of experience in social and decentralized finance, most notably X and Morpho. My favorite tech is TypeScript, React, and functional programming. I’ve worked with many companies and occasionally take on consulting and contract work. Currently in Chicago.

Reading —

The Lost Metal by Brandon Sanderson

Studying —

AI harnesses and Effect

1. Morpho

   Jun 2024 — Now

   Senior Software Engineer - Tech Lead

   Lead engineering on Morpho Curator. Reallocation, vault parameters, liquidations — the surface Morpho’s largest curators use to run over $1B on Ethereum and Base.

   Earlier · Contractor, Jun 2024 — Feb 2025

2. DELVformerly Element Finance

   Feb 2022 — Feb 2025

   Senior Software Engineer - Tech Lead

   Led a team of four; sixteen protocol integrations shipped for Hyperdrive. Lead researcher and developer on Hyperdrive Borrow, one of the first fixed-rate borrow products in DeFi.

   Earlier · Software Engineer, Feb 2022 — May 2023

3. Paragraphformerly Mirror

   May 2023 — Nov 2023

   Senior Software Engineer

   Took Mirror multichain — Base, Zora, and the rest. Collection activity up 70%. Built the inbox: chronological activity, infinite scroll, inline collect.

4. Xformerly Twitter

   2018 — Feb 2022

   Software Engineer

   Full-stack on Scaled Enforcement, the tools that applied the ToS. Built the first internal tool to action 100,000 tweets in one workflow — about 100× faster for analysts. Built the analysis UI for Smyte, Twitter’s rule engine: 20+ live dashboards against spam and influence ops. On the team that shipped verified NFT profile pictures, Twitter’s first crypto integration.

   Earlier · Software Engineer Intern, 2018 — 2019

1. Morpho Curator

   2024 — Now

   The engineering vertical for vault curators on Morpho: reallocation, parameter management for v1 and v2 vaults, and liquidation apps. Over $1B run through it on Ethereum and Base.

2. Hyperdrive Fixed Borrow

   2024 — 2025

   One of the first fixed-rate borrow products in DeFi. Lead researcher and developer.

3. council-kit

   2022 — 2023

   Open-source DAO toolkit for the Council governance protocol: TypeScript SDK, React UI boilerplate, tooling for standing up a DAO.

4. twlint

   2026

   A Tailwind class linter in Rust. Two rules — unknown classes and conflicting classes — 15–20× faster than the JS plugin.

5. baller-review

   2026 — Now

   A local PR review harness on the Claude Agent SDK. Event-driven, one ephemeral agent per PR event, state in SQLite so it doesn’t repeat itself across rounds.

Want to talk? I’m on GitHub, LinkedIn, and X.