Senior API & Interoperability Engineer – Part Time

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November 5

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Launch Legends

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Web 3 • Blockchain • Fintech

Launch Legends is a project incubator and launch platform for Web3 projects, dedicated to bringing innovative and impactful ideas to life. Leveraging over 50 experts worldwide with hundreds of years of combined experience in private equity ventures, Web3, blockchain, and launching projects, Launch Legends aims to support creators and developers in realizing their visions in the decentralized space.

51 - 200 employees

Founded 2021

🌐 Web 3

💳 Fintech

📋 Description

• Architect GraphQL Federation and gRPC gateways unifying Ethereum, Solana, Polkadot, Cosmos, and Autheo’s Layer-1 into a single API schema • Implement high-performance adapters translating REST/SOAP/Web3 RPC calls into secure, unified APIs capable of 1M+ TPS • Build event streaming systems delivering blockchain logs and transactions to dApps under 100 ms latency • Develop atomic cross-chain swap engines with zk-proof settlement and threshold-signature validation across 1,000+ validators • Embed advanced cryptography for transaction confidentiality and fault-tolerant bridge custody • Implement zk-SNARK/STARK layers for proof-of-state without data exposure • Design Kafka-based cross-chain event buses processing tens of billions of events daily • Build ML routing engines that dynamically select optimal bridge paths by latency, liquidity, and threat modeling • Implement GDPR/CCPA/HIPAA-aware routing enforcing regional compliance • Deploy bridge microservices to Kubernetes with 99.999% uptime, circuit breakers, and cross-chain retry orchestration

🎯 Requirements

• Bachelor's or Master's in Computer Science, Distributed Systems, or Software Engineering • 5+ years in protocol or API engineering, including cross-chain bridges or large-scale (1M+ TPS) integrations • Production experience with Go, Rust, and GraphQL Federation or gRPC • Proven success implementing IBC, XCM, CCIP, or equivalent bridge protocols • Strong grasp of zk-proofs, threshold signatures, and atomic swap mechanisms • Hands-on expertise with Kubernetes, event streaming (Kafka), and distributed tracing • Deep understanding of security, fault tolerance, and cryptographic primitives in blockchain environments

🏖️ Benefits

• Part-time equity/token-based cofounder opportunity • Equity in Launch Legends, Autheo, and the WFO Creator Network • Token allocations in the Autheo blockchain • Salaried compensation expected to begin within 4 to 5 months