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

Shape the Future of Blockchain—Bringing Business On-Chain

We’re offering a unique opportunity to join Launch Legends (and Autheo) as a part-time Equity Cofounder. Founded in July 2021, Launch Legends is at the forefront of bridging Web3 blockchain technology with the next evolution of Web2 integration—bringing businesses on-chain through enterprise-grade solutions, DePIN innovations, and decentralized financial infrastructure.

Our flagship project, Autheo, is an AI-enabled Layer-0 Operating System with an integrated Layer-1 blockchain and complete decentralized infrastructure that includes decentralized compute, storage, identity, and service marketplaces, as well as a full-stack development environment (DevHub)—engineered for scalable enterprise adoption, developer innovation, and real-world blockchain integration.

Our Projects

• Autheo — https://www.autheo.com


• Docs — https://docs.autheo.com


• Autheo Team — https://www.autheo.com/teams


• Launch Legends (Parent Company) — https://www.launchlegends.io


• X / Twitter — https://x.com/Autheo_Network

About Autheo

With nearly 100 equity cofounders from leading companies and institutions—many with advanced degrees and PhDs—Autheo is solving the critical challenges blocking business adoption of blockchain technology.

Autheo’s Layer-1 network, staking and fee model, and DevHub builder environment are being built and strengthened, alongside sovereign identity (TheoID), decentralized compute and persistent storage through the Autheo Marketplace, AI inference (THEO AI), and post-quantum cryptography.

Key Features

• Layer-0 OS + Layer-1 — Sovereign Cosmos-based coordination layer with an EVM-compatible execution environment, IBC interoperability, and Proof of Autheo consensus.


• Eigensphere Engine — Multi-language runtime. Rust is a first-class path for execution, cryptography, and developer tooling, alongside Go, Solidity, Move, Vyper, and C.


• DevHub & full-stack SDKs — One workspace for frontend, backend, smart contracts, and orchestration.


• TheoID — Sovereign identity for people, services, and AI agents, with a post-quantum roadmap (NIST-standardized ML-KEM, ML-DSA, and SLH-DSA).


• Autheo Marketplace — Decentralized compute, storage, and service markets built into the Autheo network.


• THEO AI — Inference and agent orchestration as a native primitive, not a third-party bolt-on.


• DePIN infrastructure — On-chain networks for real-world infrastructure ownership and resource sharing.

Audits & Organization

• Audits: Halborn (testnet and validator node platform), CertiK (Layer-1 chain and smart contracts), Adevar Labs (Base to Autheo bridge).


• Token: THEO, the native utility coin of the Autheo network.


• Organization: Launch Legends Inc., a Wyoming corporation, parent of Autheo LLC. Stewarded in part by the Autheo Foundation. 100+ equity cofounders across 25+ countries.

Compensation & Growth Path

This is a part-time equity / token-based cofounder opportunity. You will receive equity in Launch Legends, Autheo, and the WFO Creator Network, along with token allocations in the Autheo blockchain. We have already completed an initial financing round to support infrastructure and marketing, and are currently in discussions with VCs and crypto investors to fund expansion. There is no cash salary for this role, and the commitment is at least 20 hours per week.

ROLE: Senior Blockchain Developer — Autheo Internet Operating System | Cosmos SDK, EVM, IBC, Nodes & Tooling Job code: LA396

About the Role

This role reports to the engineering leads.

Autheo’s Layer-0 coordination layer is Cosmos-based, with IBC interoperability and an EVM-compatible execution environment. We are recruiting a senior blockchain developer who has written production chain code in Go, Rust, or Solidity — modules, nodes, contracts, IBC or bridges, and the tooling other teams build on.

This is hands-on engineering, not advisory work. You will write and review the code that runs the chain and the services around it, own changes from design to upgrade, and build the tools that make Autheo easy for builders to start on.

1. Chain modules, nodes and contracts

• Design, build, and review chain code for Autheo: Cosmos SDK modules, node components, or smart contracts in Solidity or Rust, depending on the surface.


• Write state migrations and upgrade handlers that are deterministic, tested, and rehearsed on testnet before they ship.


• Keep the relevant stack current with upstream releases (Cosmos SDK, CometBFT, IBC-Go, or the EVM and Rust runtimes we depend on).

2. Interoperability, IBC and bridges

• Own IBC or bridge paths end to end: channel setup, transfers and memos, light-client and misbehaviour handling, or relayer operation.


• Work across Autheo’s Cosmos and EVM environments so assets and messages move with clear failure modes.

3. Developer tooling and DevHub

• Build and maintain tooling builders actually use: CLIs, SDKs, code generation, scaffolding, and examples in DevHub.


• Turn protocol changes into tooling and docs, so a developer can scaffold, test, and deploy on Autheo from DevHub without help.

4. Testing, release and operations

• Unit, simulation or fork, and end-to-end tests for every change; CI that builds, tests, and blocks a bad release.


• Run what you ship: testnet nodes and validators, Kubernetes deployment, and Prometheus / Grafana dashboards that explain a failure without guesswork.

Required

• Public blockchain code you wrote. Merged pull requests or a public repository in Go, Rust, or Solidity — a chain, node, contract, bridge, wallet, or developer tool. Include a link to code you wrote; it’s the first thing we read.


• 5+ years of production software engineering, with substantial blockchain work in at least one of Go, Rust, or Solidity. Name the language, the repository, and your part in it.


• Hands-on work in at least one of: Cosmos SDK modules, an EVM or Solidity contract surface, IBC or bridges, or chain / node operations. Depth in one is enough; range across them is welcome.


• Comfortable operating your own work: Linux, Docker, Kubernetes, CI pipelines, full nodes or validators, and Prometheus / Grafana monitoring.

Preferred

• Experience across more than one of Go, Rust, and Solidity.


• IBC relayer operation (Hermes, the Go relayer, or equivalent) or bridge engineering.


• Wallet, custody, or signing infrastructure.


• Developer tooling other engineers depend on: a CLI, SDK, code generator, or scaffold.


• Teaching, conference talks, or workshops on blockchain engineering.

First 90 Days

• A written review of one Autheo surface you are best placed to own (a module, an EVM path, an IBC or bridge path, or a node / tooling area): what is current, what lags, and what is at risk, agreed with the engineering leads.


• At least one chain, contract, or interoperability change shipped through testnet rehearsal, with tests.


• One developer-tooling improvement in DevHub, used by another team.

About Our Organization

Autheo is building a Layer-0 Operating System and an integrated Layer-1 so identity, compute, storage, developer tooling, and AI sit on one network instead of a pile of bridges. The work now is product and protocol: making that network faster, safer, and ready for the builders and businesses that will run on it.

🌐 🚀 WHY JOIN LAUNCH LEGENDS?

• Build the core, not a side project. Protocol, DevHub, TheoID, and the Marketplace are being built and strengthened now, and your work goes straight into them.


• The Blockchain Developer seat owns chain, contract, and interoperability work across Go, Rust, and Solidity, and the tooling builders use in DevHub.


• Equity in Launch Legends and Autheo, plus a THEO token allocation.


• 100+ equity cofounders across 25+ countries. Remote. Direct line to the engineering leads and the Managing Directors.