Backend Engineer

Gondor is the first margin account for Polymarket.

We believe prediction markets will be the largest derivatives product on earth. Gondor will become its financial infrastructure, enabling institutions and advanced traders to maximize capital efficiency.

You will join our founding team and work on the protocol and product sides of the app.

Tasks

• Protocol: Build onchain infrastructure for permissionless cross-margining

• Product: Build backend infrastructure for Gondor web app

Preferred Background

Tech stack

• Backend: Node.js (Express/Hono), SQL, REST, GraphQL

• Protocol: Solidity, Hardhat, Foundry, Viem/ethers.js, Privy

• DevOps: Vercel, AWS/GCP, CI/CD, Docker

Experience

• Building liquidation engines, oracles, and margin trading infrastructure

• Deep understanding of DeFi lending protocols

• Strong familiarity with smart contract security, exploits and ability to analyze attack vectors

Benefits

• Competitive pay and equity

• Work with an elite founding team

• Be very early in an exponentially scaling industry

We are building an institutional financial primitive, not a retail gambling product. We will become a monopoly by doing the opposite of the market's current consensus view.

Join us.

The employer sponsors a work visa for this role.