At Fireblocks, you will 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. You'll own SDK features end-to-end and contribute to a culture of ownership, security, and developer experience within a distributed team building next-generation wallet infrastructure.
What You'll Do
- 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.
What We're Looking For
- 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.
Nice to Have
- 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.
Technical Stack
- Swift
- Kotlin
- React Native
- iOS
- Android
- blockchain
- cryptography
- CI/CD
- automated testing
- observability
- Rust
- WebAssembly (Wasm)
- MPC (Multi-Party Computation)
Team & Environment
- Distributed engineering team focused on developer-first SDKs and embedded wallet infrastructure
Benefits & Compensation
- Remote role in a distributed team
- Preference for candidates in the Americas time zone
- Work with some of the largest financial institutions, banks, globally-recognized brands, and Web3 companies
- Join a passionate group that moves fast and works with the biggest names in payments and fintech
- Be part of building the most complete, secure, and developer-friendly wallet infrastructure in the industry
- Opportunity to define how the next generation of financial applications are built
- Strong product mindset and deep focus on security, reliability, scalability, and exceptional developer experience
- Culture of ownership, execution, and knowledge sharing
Work Mode
- Fully remote; preference for candidates in the Americas time zone
Fireblocks embraces diversity and inclusion in all its forms and believes a diverse workforce is essential to enabling every business to securely access digital assets and cryptocurrencies.
