Senior DeFi Protocol Engineer — Autheo | Multi-Chain Markets, Wallets & Tooling

Launch Legends•Cheyenne, WY

1d•Remote

About The Position

Launch Legends and Autheo are offering a part-time equity and token-based cofounder opportunity for a senior DeFi protocol engineer. Autheo is an AI-enabled Layer-0 operating system with an integrated Layer-1 blockchain and decentralized infrastructure. Its network includes a Cosmos-based coordination layer, IBC interoperability, an EVM-compatible execution environment, and developer tools through DevHub. The role reports to the engineering leads and focuses on hands-on protocol engineering. The engineer will design, build, and review DeFi protocol code for Autheo, own changes from design through upgrade, and help builders launch DeFi applications without assistance. Work also spans multi-chain interoperability, wallet and custody flows, developer tooling, testing, security, testnet deployments, and monitoring. The role is remote and requires at least 20 hours per week. Compensation is equity in Launch Legends, Autheo, and the WFO Creator Network, plus token allocations in the Autheo blockchain. There is no cash salary.

Requirements

Provide public protocol code personally written, such as merged pull requests or a public repository for DeFi, chain, wallet, or tooling work in Solidity, Rust, Go, or Move.
At least 5 years of production software engineering experience, including substantial blockchain or DeFi work that can be discussed in detail.
Shipped DeFi or on-chain market work, such as automated market makers, staking, vaults, reward distribution, or equivalent protocol logic, in Solidity, Rust, Cosmos, or Move; identify the protocol or chain and personal contribution.
Multi-chain experience involving Cosmos and EVM, IBC or bridges, or work spanning more than one execution environment.
Ability to operate one’s own work using Linux, Docker, Kubernetes or equivalent CI, testnet deployments, and monitoring.

Nice To Haves

Wallet, custody, or signing infrastructure experience, including key handling, hot/warm/cold wallet flows, or multi-chain transaction tracking.
Experience building developer tooling used by other engineers, such as a CLI, SDK, indexer, or scaffold.
Audit experience, either writing findings or fixing them.
Cosmos SDK module work, CosmWasm, or IBC relayer operation.
Teaching, conference talks, or workshops on blockchain or DeFi engineering.

Responsibilities

Design, build, and review DeFi protocol logic, including staking and fee mechanics, vaults, automated market makers, reward distribution, or equivalent market primitives.
Write deterministic, tested upgrade paths and migrations, and rehearse them on testnet before release.
Coordinate with chain, bridge, and EVM teams so assets and messages move between execution environments with clear failure modes.
Build and review IBC, bridge, or cross-environment paths, including transfers, channels, memos, and failure handling.
Maintain consistent protocol behavior across Cosmos and EVM surfaces and document how builders move positions or assets between environments.
Work on wallet, custody, or signing flows, including key handling, transaction construction, and multi-chain tracking.
Convert protocol changes into DevHub tooling and documentation, including SDKs, CLIs, and examples.
Create unit, fork or simulation, invariant, and fuzz tests for protocol changes; maintain CI that builds, tests, and blocks bad releases.
Deploy work to testnet and maintain monitoring that helps explain failed transactions or unexpected state changes.
Within the first 90 days, produce a written review of Autheo’s DeFi and value-transfer surfaces, agreed with the engineering leads.
Within the first 90 days, ship at least one tested protocol change through testnet rehearsal.
Within the first 90 days, deliver a wallet, custody, or DevHub tooling improvement usable by another team.
Within the first 90 days, document an IBC, bridge, or cross-environment path for DeFi builders.