Mobile Engineer (Remote)

About Fireblocks Fireblocks is a digital asset infrastructure platform trusted by major financial institutions including BNY Mellon, BNP Paribas, ANZ Bank, and Revolut. Dynamic, a Fireblocks subsidiary, provides embedded wallet infrastructure for developers building crypto and fintech applications. About the Team Dynamic was founded in 2021 to make wallet components foundational to applications. The team builds developer-first SDKs enabling seamless embedded wallet integration. Dynamic powers wallet experiences for companies like Kraken, Magic Eden, and zerohash, having onboarded 50M+ wallets across crypto and fintech applications. What You'll Do • Design and implement high-quality native mobile SDKs focused on API ergonomics, performance, and reliability • Own SDK features end-to-end: from API design and architecture through implementation, testing, release, and documentation • Build secure, reliable SDK components for wallet operations including cryptographic operations and blockchain interactions • Define and evolve SDK architecture supporting maintainability, backward compatibility, and adoption • Build sample applications and demos showcasing SDK capabilities • Create comprehensive SDK documentation and integration guides • Work with developer relations and support teams addressing customer integration challenges • Establish best practices around testing, observability, releases, and code health • Contribute to a culture of ownership through hands-on work, code reviews, and knowledge sharing What You'll Bring • 5+ years software engineering experience with deep focus on mobile development and production-grade SDKs • Demonstrated track record shipping high-quality code with concrete examples • Strong hands-on experience with iOS (Swift) and/or Android (Kotlin); familiarity with React Native and cross-platform frameworks • Experience building mobile SDKs including API design, versioning, packaging, and maintenance • Experience with blockchain-enabled mobile systems including wallet flows, signing, and on-chain interactions • Experience working on security-sensitive mobile software such as key management, secure storage, or financial products • Strong grasp of mobile engineering best practices including CI/CD, automated testing, release management, and observability • Get-things-done mindset with ability to independently own problems and deliver end-to-end solutions • Comfortable making long-term architectural decisions while remaining pragmatic • B.Sc. in Computer Science/Engineering or equivalent practical experience • Remote role with preference for Americas time zone candidates Big Advantages • Rust and/or WebAssembly (Wasm) experience building cross-platform SDKs for mobile • Experience designing shared core logic across iOS and Android • Experience with advanced mobile security primitives including secure hardware, MPC, and low-level crypto • Prior experience owning or founding a mobile platform or SDK from scratch