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Fireblocks

Fullstack Engineer, Embedded Wallet

United StatesmidAdded 6 days ago

About this role

Dynamic, Fireblocks' embedded wallet platform, seeks a Fullstack Engineer to design and build production-grade native mobile SDKs that enable developers to integrate non-custodial wallet functionality into their applications. You'll own features end-to-end—from API design through implementation, testing, documentation, and release—while maintaining institutional-grade security and exceptional developer experience.

What you'll do

  • Design and implement high-quality native mobile SDKs (iOS/Android) with focus on API ergonomics, performance, and reliability
  • Own SDK features end-to-end: architecture, implementation, testing, versioning, and documentation
  • Build and maintain secure SDK components for wallet operations, cryptography, and blockchain interactions
  • Define and evolve SDK architecture for maintainability, backward compatibility, and cross-platform adoption
  • Create sample applications, demos, and comprehensive integration guides for developers
  • Establish best practices around testing, observability, CI/CD, and code health across the SDK

What they're looking for

  • Mobile development (5+ years): iOS (Swift) and/or Android (Kotlin)
  • SDK and shared library development: API design, versioning, packaging, maintenance
  • Blockchain mobile systems: wallet flows, signing, on-chain interactions
  • Security-sensitive software: key management, secure storage, cryptography
  • Mobile engineering: CI/CD, automated testing, release management, observability
  • React Native or cross-platform frameworks (preferred)
  • Cryptographic operations and financial product experience
  • Full-stack capability across mobile and backend systems
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Fireblocks

Fireblocks builds a blockchain-based digital asset platform that enables financial institutions to securely manage and transact cryptocurrencies at scale. The company is hiring Sales Engineers, Mobile/Full Stack Engineers, and AI/Data professionals to expand its core wallet infrastructure, embedded SDK offerings, and data-driven decision-making capabilities.

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Likely interview questions

  • Walk us through a mobile SDK you've built or shipped—how did you design its API surface and handle backward compatibility?
  • Describe your experience with security-sensitive mobile code. How have you approached key management or secure storage in production?
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