Senior React Native Engineer

Blockchain, Inc. • Full-time • Buenos Aires • 5h ago

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.

You may contact our Data Protection Officer by email at dpo@blockchain.com. Your personal data will be processed for the purposes of managing Controller’s recruitment related activities, which include setting up and conducting interviews and tests for applicants, evaluating and assessing the results thereto, and as is otherwise needed in the recruitment and hiring processes. Such processing is legally permissible under Art. 6(1)(f) of Regulation (EU) 2016/679 (General Data Protection Regulation) as necessary for the purposes of the legitimate interests pursued by the Controller, which are the solicitation, evaluation, and selection of applicants for employment.

Your personal data will be shared with Greenhouse Software, Inc., a cloud services provider located in the United States of America and engaged by Controller to help manage its recruitment and hiring process on Controller’s behalf. Accordingly, if you are located outside of the United States, your personal data will be transferred to the United States once you submit it through this site. Because the European Union Commission has determined that United States data privacy laws do not ensure an adequate level of protection for personal data collected from EU data subjects, the transfer will be subject to appropriate additional safeguards under the standard contractual clauses.

Your personal data will be retained by Controller as long as Controller determines it is necessary to evaluate your application for employment. Under the GDPR, you have the right to request access to your personal data, to request that your personal data be rectified or erased, and to request that processing of your personal data be restricted. You also have the right to data portability. In addition, you may lodge a complaint with an EU supervisory authority.