Sneh Koul

Software engineer who cares about building impactful products, clean code, and passionate work. I do Rust, Go, and TypeScript.

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Education

University of Waterloo

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Honors Computer Engineering (w/ distinction)

Work Experience

Espresso Systems

Golang
Rust
Arbitrum Nitro
OP Stack
TEE
ZK

Team Lead

  • Led the architecture and delivery of Espresso Network's integration with Arbitrum Nitro, enabling adoption across 10+ rollup chains.
  • Managed and provided technical direction to a team of five engineers, driving execution across sequencer infrastructure, L1 contracts, and the Arbitrum geth fork.
  • Architected a trust-minimized integration using TEEs, including AWS Nitro Enclaves, Intel SGX, and Intel TDX, across Golang infrastructure and Solidity contracts.
  • Introduced Succinct's SP1 zero-knowledge proofs for TEE attestations, reducing verification costs by 300x.

Senior Software Engineer

  • Built core components of the Espresso Stack, a framework for launching rollups on Espresso using Besu, Rust, and Succinct's SP1.
  • Drove Espresso's OP Stack integration across op-geth, op-node, and Kona, contributing production infrastructure in Golang and Rust.

Coinbase, Software Engineer IV

Cryptography
Go
gRPC
GraphQL
Security
AWS
TypeScript
React
  • Led a regulatory-critical consolidation of privacy preferences across web and mobile platforms, coordinating execution across approximately five cross-functional teams.
  • Re-architected a high-volume Go, gRPC, and Postgres fraud-detection service, improving performance by 80% and delivering six-figure annual cost savings.
  • Contributed to the secure key generation, management, and recovery systems supporting Coinbase's Bitcoin ETF custody for BlackRock and Grayscale.
  • Created and open-sourced build-onchain-apps, giving developers a production-ready foundation for building decentralized applications.
  • Helped modernize Coinbase's backend architecture by migrating critical functionality from a legacy Ruby monolith to Go microservices.

LearnWeb3, Software Engineer

Ethereum
TypeScript
Solidity
Rust
Postgres
GraphQL
  • Built open-source educational platforms and reference implementations covering account abstraction, zero-knowledge proofs, MEV, NFTs, and DeFi using Next.js, TypeScript, Solidity, and Rust.
  • Helped scale LearnWeb3 into a leading developer education platform serving more than 120,000 students worldwide.
  • Contributed to the company's early growth and technical execution, supporting a successful $1 million fundraising round.

MetaMask, Software Engineer

Ethereum
TypeScript
React
  • Spearheaded the implementation of a pivotal feature that automatically redirects users to the requesting dApp after first installation of MetaMask.
  • Migrated the MetaMask extension from JavaScript to TypeScript, enhancing consistency, readability, and long-term maintainability.
  • Added extensive end-to-end testing using Selenium and Jest to rigorously test the functionality of the MetaMask extension across all RPC methods and web3.js compatibility.

Arctic Wolf Networks, Software Engineer

Cybersecurity
Go
AWS
  • Developed and managed Go microservices for a cybersecurity vulnerabilities tracking application.
  • Implemented user facing features in a React/TypeScript application, enhancing user experience.
  • Optimized deployment processes by setting up CI/CD pipelines via GitHub Actions, resulting in reduced deployment time.
  • Orchestrated deployment of services as Docker containers on AWS-managed Kubernetes clusters, ensuring scalability and efficiency in operations.

Projects

UniCoW

A Uniswap v4 hook combined with an EigenLayer AVS to enable coincidence of wants on Uniswap v4.

Solidity
Typescript

CAIP Extended

TypeScript reference implementation for the Chain Agnostic Standards Association standards to house multiple namespace interfaces for different blockchain ecosystems.

TypeScript
Open Source

uniswap-sdk-monorepo

Worked with Uniswap to develop a typescript sdk for interacting with Uniswap v4.

Solidity
Typescript

BridgeKit

A plug-and-play React library to offer cross-chain bridging and swapping within any dApp. Won Coinbase Onchain Summer hackathon.

NextJS
TypeScript

DeFi-dY

A futures protocol to invest in the performance of other DeFi primitives. Won multiple ETH Waterloo sponsor tracks.

Solidity
Typescript

Languages

TypeScript
Go
Rust
Solidity
Python

Blockchain Tools

viem
wagmi
Hardhat
Foundry
Graph
Chainlink
geth

Cloud and Databases

Docker
AWS
Kubernetes
MongoDB
Postgres
Github Actions