[Remote] Fullstack Engineer, Embedded Wallet

Note: The job is a remote job and is open to candidates in USA. Fireblocks is a digital asset infrastructure provider, and its Dynamic team builds embedded wallet infrastructure for developers. The role focuses on designing and implementing high-quality native mobile SDKs, owning features end-to-end, and building secure, reliable wallet components, sample apps, and documentation.


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

Skills

  • 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
  • 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

Benefits

  • Remote role in a distributed team
  • A target bonus
  • A very competitive equity grant

Company Overview

  • Fireblocks is a blockchain security service provider for moving, storing, and issuing digital assets. It was founded in 2018, and is headquartered in New York, New York, USA, with a workforce of 501-1000 employees. Its website is

  • Company H1B Sponsorship

  • Fireblocks has a track record of offering H1B sponsorships, with 2 in 2026, 4 in 2025, 1 in 2024, 4 in 2023, 3 in 2022. Please note that this does not guarantee sponsorship for this specific role.

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