[Remote] Fullstack Engineer, Embedded Wallet

September 26, 2026

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 https://www.fireblocks.com.

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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