Mobile Engineer (Web3)

TL;DR

Mobile Engineer (Web3): Design and implement high-quality native mobile SDKs for embedded wallet functionality with an accent on API ergonomics, performance, reliability, and security. Focus on owning SDK features end-to-end, building secure wallet operations including cryptographic operations and blockchain interactions, and evolving architecture for scalability and maintainability.

Location: Remote in a distributed team; preference for candidates in the Americas time zone

Salary: $177,000–$230,000 (NYC estimate)

Company

hirify.global’ Dynamic is an embedded wallet platform for developers integrating crypto and stablecoin experiences into applications, powering 50M+ wallets for fintech and crypto teams like Kraken and Magic Eden.

What you will do

• Design and implement native mobile SDKs (iOS/Android) with focus on API ergonomics, performance, and reliability.
• Own SDK features end-to-end: API design, implementation, testing, release, versioning, and documentation.
• Build secure SDK components for wallet operations, cryptographic operations, blockchain interactions, and security flows.
• Evolve SDK architecture for maintainability, backward compatibility, and adoption across customer applications.
• Create sample apps, demos, documentation, and guides; collaborate with developer relations on customer issues.
• Establish best practices for testing, observability, releases, and code health; contribute to ownership culture.

Requirements

• 5+ years software engineering with deep mobile development and production-grade SDKs
• Track record of high-quality code; hands-on iOS (Swift) and/or Android (Kotlin), familiarity with React Native.
• Experience building mobile SDKs: API design, versioning, packaging, maintenance.
• Blockchain mobile systems: wallet flows, signing, on-chain interactions.
• Security-sensitive mobile software: key management, secure storage, cryptography.
• Mobile best practices: CI/CD, automated testing, release management, observability.
• B.Sc. in Computer Science or equivalent.

Big Advantages

• Rust and/or WebAssembly for cross-platform SDKs.
• Designing shared core logic for iOS/Android.
• Advanced mobile security: secure hardware, MPC, low-level crypto.
• Owning/founding mobile platform/SDK from scratch.

Culture & Benefits

• Distributed team with strong product mindset, security focus, and developer experience.
• Passionate group moving fast, working with top fintech/crypto names.
• Competitive compensation including base salary, target bonus, equity grant, and generous benefits.