Mobile Engineer

About the role

The world of digital assets is accelerating in speed, magnitude, and complexity, opening the door to new ways for leveraging the blockchain. Fireblocks’ platform and network provide the simplest and most secure way for companies to work with digital assets and it trusted by some of the largest financial institutions, banks, globally-recognized brands, and Web3 companies in the world, including BNY Mellon, BNP Paribas, ANZ Bank, Revolut, and thousands more. As part of Fireblocks, Dynamic represents the next evolution of non-custodial wallet infrastructure. Dynamic is Fireblocks’ embedded wallet platform, purpose-built for developers who want to bring crypto and stablecoin experiences into modern applications without complexity.

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.
• 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.

Requirements

• 5+ years of software engineering experience, with deep focus on mobile development and shipping production-grade SDKs.
• 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.
• A 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.

Qualifications

• 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.

Skills

• 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; preference for candidates in the Americas time zone

Pay

A reasonable base salary range estimate for this position is $177,000 to $230,000. The base salary is one component of the total compensation package, which for some roles may include a target bonus, a very competitive equity grant, and very generous benefits.

Schedule

Full-time