Mobile Engineer (Remote)
Fireblocks2 months ago
Buenos Aires, Argentina +4 moreSenior
Responsibilities
- Design and implement native mobile SDKs with strong API ergonomics, performance, and reliability.
- Own SDK features from API design and architecture through implementation, testing, release, versioning, and documentation.
- Build secure SDK components for wallet operations, cryptographic operations, blockchain interactions, and security-sensitive flows.
- Evolve SDK architecture for maintainability, backward compatibility, and adoption across customer applications.
- Create sample applications, demos, documentation, and integration guides for developers.
- Partner with developer relations and support teams to resolve customer integration challenges.
- Establish best practices for testing, observability, releases, and code health.
- Contribute through hands-on implementation, code reviews, documentation, knowledge sharing, and technical leadership.
Requirements
- 5+ years of software engineering experience focused on mobile development and production-grade SDKs.
- Strong hands-on experience with iOS and Swift and/or Android and Kotlin, plus experience with React Native or other cross-platform frameworks.
- Experience building mobile SDKs or shared libraries, including API design, versioning, packaging, and long-term maintenance.
- Experience with blockchain-enabled mobile systems, wallet flows, signing, and on-chain interactions.
- Experience developing security-sensitive mobile software involving key management, secure storage, cryptography, or financial products.
- Knowledge of mobile engineering practices including automated testing, release management, and observability.
- Bachelor of Science in Computer Science or Engineering, or equivalent practical experience.
- Rust and/or WebAssembly experience, shared core logic across iOS and Android, advanced mobile security primitives, or prior ownership of a mobile platform or SDK are advantageous.
- Ability to independently own problems, make long-term architectural decisions, and deliver end-to-end solutions.
Benefits
- Remote role in a distributed team.
- Preference for candidates in the Americas time zone.
- Opportunity to build secure mobile wallet infrastructure used across crypto and fintech applications.
About Fireblocks
Fireblocks builds an enterprise platform and APIs for institutions to custody, transfer, and manage digital assets across blockchains, using MPC-based key management. It sells subscription software and services for payments, settlement, trading operations, and tokenization to banks, fintechs, and crypto-native firms. Founded in 2018 and headquartered in New York, it is privately held and counts customers such as BNY Mellon and Revolut.