Fullstack Engineer, Embedded Wallet
Fireblocks · United States
About this role
**Fullstack Engineer, Embedded Wallet** **About the Role** Design and implement high-quality native mobile SDKs enabling developers to integrate embedded wallet functionality into their applications. Own SDK features end-to-end—from API design and architecture through implementation, testing, release, and developer documentation. **Key Responsibilities** • Build secure, reliable SDK components for wallet operations, cryptographic operations, and blockchain interactions • Define and evolve SDK architecture for long-term maintainability and backward compatibility • Create sample applications, demos, and comprehensive integration guides • Work with developer relations and support teams on customer integration challenges • Establish best practices around testing, observability, releases, and code health **Required Experience** • 5+ years software engineering with deep mobile development focus • Proven track record shipping production-grade SDKs • Strong hands-on experience with iOS (Swift) and/or Android (Kotlin) • Experience building mobile SDKs, including API design, versioning, and maintenance • Blockchain-enabled mobile systems experience (wallet flows, signing, on-chain interactions) • Security-sensitive mobile software experience (key management, secure storage, cryptography) • Strong mobile engineering best practices (CI/CD, testing, release management, observability) • B.Sc. in Computer Science/Engineering or equivalent • Remote role; Americas time zone preferred **Big Advantages** • Rust and/or WebAssembly (Wasm) experience • Cross-platform shared core logic design (iOS/Android) • Advanced mobile security primitives (secure hardware, MPC, low-level crypto) • Experience founding or owning a mobile platform/SDK from scratch **Compensation (NYC)** Base salary range: $177,000–$230,000 + bonus, equity, and comprehensive benefits
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