Senior Blockchain Developer — Autheo | Cosmos SDK, EVM, IBC, Nodes & Tooling

Launch Legends•Cheyenne, WY

1d•Remote

About The Position

Autheo is recruiting a senior blockchain developer to build and operate production blockchain code for its Cosmos-based Layer-0 coordination layer, IBC interoperability, and EVM-compatible execution environment. This is a hands-on engineering role reporting to the engineering leads, focused on writing and reviewing code that runs the chain and its surrounding services, owning changes from design through upgrade, and creating developer tools that make Autheo easier to use. Work may include Cosmos SDK modules, node components, and Solidity or Rust smart contracts; deterministic state migrations and upgrade handlers; IBC or bridge paths; and DevHub tooling such as CLIs, SDKs, code generation, scaffolding, and examples. The role also includes testing, release processes, and operating testnet nodes and validators, Kubernetes deployments, and monitoring dashboards. The position is offered as a part-time equity/token-based cofounder opportunity with no cash salary and a commitment of at least 20 hours per week. Compensation includes equity in Launch Legends, Autheo, and the WFO Creator Network, along with Autheo token allocations. The role is remote and offers direct access to engineering leads and Managing Directors.

Requirements

Provide public blockchain code personally written, such as merged pull requests or a public repository in Go, Rust, or Solidity; include a link to the code.
At least 5 years of production software engineering experience, with substantial blockchain work in at least one of Go, Rust, or Solidity.
Hands-on experience in at least one of Cosmos SDK modules, an EVM or Solidity contract surface, IBC or bridges, or chain/node operations.
Comfort operating Linux, Docker, Kubernetes, CI pipelines, full nodes or validators, and Prometheus/Grafana monitoring.

Nice To Haves

Experience with more than one of Go, Rust, and Solidity.
IBC relayer operation, such as Hermes, the Go relayer, or an equivalent, or bridge engineering.
Wallet, custody, or signing infrastructure experience.
Experience building developer tooling used by other engineers, such as a CLI, SDK, code generator, or scaffold.
Teaching, conference talks, or workshops on blockchain engineering.

Responsibilities

Design, build, and review Autheo chain code, including Cosmos SDK modules, node components, and Solidity or Rust smart contracts, depending on the surface.
Write deterministic state migrations and upgrade handlers, test them, and rehearse them on testnet before release.
Keep relevant dependencies and stack components current with upstream releases, including Cosmos SDK, CometBFT, IBC-Go, and the EVM and Rust runtimes in use.
Own IBC or bridge paths end to end, including channel setup, transfers and memos, light-client and misbehaviour handling, or relayer operation.
Work across Autheo’s Cosmos and EVM environments to enable asset and message movement with clear failure modes.
Build and maintain developer tooling for DevHub, including CLIs, SDKs, code generation, scaffolding, and examples.
Translate protocol changes into tooling and documentation so developers can scaffold, test, and deploy on Autheo through DevHub.
Create unit, simulation or fork, and end-to-end tests for changes, and maintain CI that builds and tests code and blocks bad releases.
Operate shipped work, including testnet nodes and validators, Kubernetes deployments, and Prometheus/Grafana dashboards.
Write a review of an Autheo surface to own, covering its current state, gaps, and risks, in agreement with the engineering leads.
Ship at least one chain, contract, or interoperability change through testnet rehearsal with tests during the first 90 days.
Deliver a DevHub developer-tooling improvement used by another team during the first 90 days.