Senior API & Interop Engineer — Remote Equity Cofounder

Recooty; Cheyenne (WY); Remote; USD 60,000 - 120,000; Part time

Benefits offered by this job

Equity in Launch Legends

THEO/tokens allocation

Remote work across 25+ countries

Job summary

Launch Legends is seeking a Senior Engineer, API & Interoperability to own cross-chain contracts and the surface used by DevHub and partners. The role is part‑time equity/cofounder, with Go and Rust development, and a live Mainnet/I C B bridge focus.

You will work alongside Protocol and SRE, own the schema and message paths, and help ship the surface that enables multi-chain operations with a focus on reliability and developer experience.

Qualifications

• 5+ years in protocol or API engineering.
• Production Go or Rust experience.
• Experience with IBC or cross-chain messaging.
• Kubernetes and tracing with OpenTelemetry.

Responsibilities

• Versioned gRPC and GraphQL contracts for DevHub and partners.
• Go and Rust clients with JavaScript bindings.
• Manage IBC channels and the live bridge integration.
• Implement event delivery with idempotency and health metrics.
• Ensure reliability using OpenTelemetry and Kubernetes.

Skills

5+ years in protocol/API engineering

Go

Rust

I BC / cross-chain messaging

Kubernetes

OpenTelemetry tracing

Education

Bachelor’s or Master’s in Computer Science, or equivalent

Tools

Go

Rust

Job description

Launch Legends is seeking a Senior Engineer, API & Interoperability to own cross-chain contracts and the surface used by DevHub and partners. The role is part‑time equity/cofounder, with Go and Rust development, and a live Mainnet/I C B bridge focus.

You will work alongside Protocol and SRE, own the schema and message paths, and help ship the surface that enables multi-chain operations with a focus on reliability and developer experience.