Fireblocks - Company
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Requirements
• 5+ years of software engineering experience, with deep focus on mobile development and shipping production-grade SDKs. • Demonstrated track record of building and shipping high-quality code, with work you can point to and discuss in depth. • Strong hands-on experience with iOS (Swift) and/or Android (Kotlin); experience with React Native or other cross-platform frameworks, and familiarity with all. • Experience building mobile SDKs or shared libraries, including API design, versioning, packaging, and long-term maintenance across platforms. • 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, cryptography, or financial products. • Strong grasp of mobile engineering best practices, including CI/CD, automated testing, release management, and observability. • A get-things-done mindset with the ability to independently own problems and deliver end-to-end solutions. • Comfortable making long-term architectural decisions while remaining pragmatic and adaptable. • B.Sc. in Computer Science / Engineering or equivalent practical experience. • Remote role in a distributed team; preference for candidates in the Americas time zone. • Big Advantages • Big Advantages • Rust and/or WebAssembly (Wasm) experience, particularly building cross-platform SDKs consumed by mobile apps. • Experience designing shared core logic used across iOS and Android. • Experience with advanced mobile security primitives (secure hardware, MPC, low-level crypto). • Prior experience owning or founding a mobile platform or SDK from scratch.
Responsibilities
• Design and implement high-quality native mobile SDKs that enable developers to integrate embedded wallet functionality into their applications, with a strong focus on API ergonomics, performance, and reliability. • Own SDK features end-to-end: from API design and architecture, through implementation and testing, to release, versioning, and developer documentation. • Build and maintain secure, reliable SDK components for wallet operations, including cryptographic operations, blockchain interactions, and security-sensitive flows. • Define and evolve the SDK architecture to support long-term maintainability, backward compatibility, and adoption across diverse customer applications. • Build sample applications and demos that showcase SDK capabilities and serve as integration references for customers. • Create clear, comprehensive SDK documentation and integration guides. • Work with developer relations and support teams to address customer integration challenges. • Raise the bar for quality and operational excellence by establishing best practices around testing, observability, releases, and code health. • Contribute to a culture of ownership and execution, leading by example through hands-on work, code reviews, documentation, and knowledge sharing.
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