Senior React Native Engineer

As a Senior React Native Engineer at Blockchain, you will help evolve the mobile architecture into a modular, multiplatform system that enables rapid development of new consumer crypto apps. You'll join a team focused on composing reusable building blocks from the existing stack and delivering high-quality React Native applications across iOS and Android. This is a hands-on role with significant ownership, where you define how Blockchain scales a new generation of mobile experiences.

What you'll do

• Design and build scalable React Native applications powered by shared modules from the mobile and backend platforms
• Drive the architecture of a modular, reusable system, enabling rapid assembly of new apps from core building blocks such as auth, wallet, trading, on-ramp/off-ramp, and others
• Define and enforce clear contracts and boundaries between modules, ensuring flexibility, reliability, and long-term maintainability
• Lead complex projects from technical design through delivery and iteration, working across multiple teams
• Translate ambiguous product ideas into well-structured technical plans, balancing speed, quality, and scalability
• Leverage AI-assisted development tools such as Claude and Codex to accelerate development, while setting standards for correctness, performance, and security
• Review, validate, and refine AI-generated code to ensure it meets production-grade standards
• Drive the evolution of shared UI systems, component libraries, and developer tooling to improve velocity across teams
• Own the quality, performance, and reliability of the systems you build, including observability and debugging in production
• Mentor other engineers, contribute to code reviews, and help raise the engineering bar across the team
• Collaborate closely with Product, Design, Backend, and Mobile teams to deliver cohesive user experiences
• Support release processes, app store deployments, and ongoing improvements post-launch

What you bring

• 5+ years of software engineering experience, with strong hands-on experience in React Native
• Deep proficiency in JavaScript/TypeScript and modern mobile development practices
• Proven experience building and shipping production-grade mobile applications at scale
• Strong understanding of mobile architecture, modular systems, and scalable design patterns
• Experience owning features or systems from design through production and iteration
• Ability to navigate ambiguity and drive technical decisions with minimal oversight
• Experience integrating complex backend systems and APIs into mobile applications
• Strong experience leveraging AI developer tools such as Claude and Codex effectively in production workflows
• Excellent code quality standards, with the ability to review and guide others' work
• Experience improving performance, reliability, and developer experience in mobile apps
• Strong communication skills and ability to influence cross-functional teams

Nice to have

• Experience with native mobile development in Swift, Kotlin, or Java
• Experience designing or working on cross-platform or shared architecture systems
• Familiarity with crypto, wallets, or financial applications
• Experience integrating third-party services such as payments, authentication, or on-chain providers
• Experience with CI/CD pipelines, release automation, and app store processes
• Exposure to secure key management, authentication flows, or MPC wallets

What we offer

• Competitive full-time salary based on experience, plus meaningful equity in an industry-leading company
• Performance-based bonuses
• Apple equipment provided by the company
• Work from Anywhere Policy: up to 20 days per year of remote work from anywhere in the world
• Based in the Palermo office with a mandatory in-office presence four days per week

About Blockchain

Blockchain is a global crypto company connecting people to the future of finance, serving over 90 million wallet holders and 40 million verified users. Since 2011, it has facilitated over $1 trillion in crypto transactions and is recognized as the most trusted and fastest-growing platform in the industry.