Senior React Native Engineer
Blockchain.com · Buenos Aires
Blockchain is connecting the world to the future of finance. As the most trusted and fastest-growing global crypto company, it helps millions of people worldwide safely access cryptocurrency. Since its inception in 2011, Blockchain has earned the trust of over 90 million wallet holders and more than 40 million verified users, facilitating over $1 trillion in crypto transactions.
We are looking for a Senior React Native Engineer to help us evolve our mobile architecture into a modular, multiplatform system. This role is focused on enabling rapid development of new consumer apps by composing reusable building blocks from our existing stack and delivering them through high-quality React Native applications.
This is a hands-on engineering role with significant ownership, where you will help define how we build and scale a new generation of mobile apps at Blockchain.com—making it possible to quickly launch new crypto experiences across iOS and Android.
WHAT YOU WILL DO
- Design and build scalable React Native applications powered by shared modules from our mobile and backend platforms
- Drive the architecture of a modular, reusable system, enabling rapid assembly of new apps from core building blocks (auth, wallet, trading, on-ramp/off-ramp, etc.)
- 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 (e.g., Claude, Codex) to accelerate development, while setting standards for correctness, performance, and security
- Review, validate, and refine AI-generated code, ensuring 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 WILL NEED
- 5+ years of experience in software engineering, 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 (e.g., Claude, 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 (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 (e.g., payments, authentication, on-chain providers)
- Experience with CI/CD pipelines, release automation, and app store processes
- Exposure to secure key management, authentication flows, or MPC wallets
COMPENSATION & PERKS
- Competitive full-time salary based on experience and meaningful equity in an industry-leading company
- This is a role based in our Palermo office, with a mandatory in-office presence four days per week.
- The opportunity to be a key player and build your career at a rapidly expanding, global technology company in an exciting, emerging industry.
- Performance-based bonuses
- Apple equipment provided by the company
- Work from Anywhere Policy: You can work remotely from anywhere in the world for up to 20 days per year.
Blockchain is committed to diversity and inclusion in the workplace and is proud to be an equal opportunity employer. We prohibit discrimination and harassment of any kind based on race, religion, color, national origin, gender, gender expression, sex, sexual orientation, age, marital status, veteran status, disability status or any other characteristic protected by law. This policy applies to all employment practices within our organization, including hiring, recruiting, promotion, termination, layoff, recall, leave of absence, and apprenticeship. Blockchain makes hiring decisions based solely on qualifications, merit, and business needs at the time.
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