Desenvolvedor Sênior | React Native

Accountabilities

• End-to-End Mobile Development: Lead the design, development, testing, and delivery of mobile features using React Native and TypeScript across iOS and Android platforms.

• Technical Architecture: Make and maintain architectural decisions related to project structure, state management, data layers, navigation, and testing strategies, ensuring solutions remain scalable and maintainable.

• Application Performance and Reliability: Investigate and resolve platform-specific challenges involving performance, battery consumption, background execution, offline synchronization, and application stability.

• Code Quality and Engineering Standards: Write clean, efficient, testable code and promote best practices through thoughtful code reviews, reusable patterns, and maintainable implementation standards.

• API and Backend Integration: Integrate mobile applications with existing APIs and ecosystem services, collaborating with backend teams to refine API contracts when they do not adequately meet mobile requirements.

• UI Implementation: Build prototypes and implement interfaces with high fidelity to approved designs, ensuring accurate layouts, consistent behavior, and a polished user experience.

• Testing and Quality Assurance: Develop and maintain automated tests using appropriate JavaScript and TypeScript testing frameworks, contributing to reliable releases and reduced regression risks.

• Release Management: Support mobile build processes, certificates, application deployment, app store publication, and mobile CI/CD pipelines.

• Production Monitoring and Troubleshooting: Monitor applications in production, investigate incidents, identify root causes, and implement durable fixes rather than temporary workarounds.

• Technical Leadership and Mentoring: Guide less experienced developers, facilitate technical discussions, provide constructive feedback, and establish engineering practices that enable the team to work effectively.

• Cross-Functional Collaboration: Work with product stakeholders and technical leaders to define requirements, align architectural decisions, and ensure projects meet functional and technical specifications.

• Continuous Improvement: Research emerging technologies, evaluate alternative approaches, and present recommendations for architectural review and ongoing product improvement.

• Full-Stack Contribution: Contribute to React web applications and Node.js backend services when required, supporting REST APIs, database integrations, and authentication workflows.

Requirements:

• At least 4 years of solid professional experience with React and React Native development.

• Strong production experience with TypeScript, including advanced use of React Hooks and functional programming principles.

• Practical experience with React Navigation and state management solutions such as Context API, React Query/TanStack Query, or equivalent technologies.

• Experience developing automated tests for JavaScript and TypeScript applications using tools such as Jest and React Testing Library.

• Hands-on experience with iOS and Android release processes, including builds, certificates, and publishing applications to app stores.

• Experience with Styled Components and a strong understanding of responsive styling, UI implementation, and user experience principles.

• Knowledge of mobile CI/CD pipelines and automated build and delivery workflows.

• Professional experience developing web applications with React, including single-page applications (SPAs), routing, and build tooling.

• Experience with Node.js backend development, including REST API implementation, database integration, and authentication.

• Ability to make and justify technical architecture decisions independently, considering maintainability, performance, scalability, and testing.

• Strong analytical and problem-solving skills, particularly when investigating complex platform-specific issues.

• Excellent communication skills and the ability to provide and receive technical feedback constructively.

• Demonstrated autonomy, technical leadership, and willingness to mentor developers and improve team-wide engineering practices.

• Adaptability and effective prioritization when working in a dynamic environment with multiple demands.

• Ability to read and understand technical documentation in English.

Nice-to-have qualifications:

• Experience integrating native iOS or Android modules using Swift, Kotlin, Objective-C, or Java.

• Familiarity with Expo, including its SDK, EAS Build, and development clients.

• Experience creating, maintaining, or consuming design systems.

• Knowledge of production error monitoring tools such as Sentry or equivalent platforms.

• Familiarity with internationalization (i18n) libraries such as i18next.

• Experience applying Test-Driven Development (TDD) practices.

Benefits:

• Remote work: Fully remote working arrangement.

• Meal and food allowance: Meal and food benefits to support everyday expenses.

• Health insurance: Medical insurance, with 50% of the cost paid by the employer and 50% by the employee.

• Dental insurance: Dental coverage, with 50% of the cost paid by the employer and 50% by the employee.

• Home office allowance: Financial support for working remotely.

• Birthday time off: An additional day off during your birthday month.

• Extended parental leave: Enhanced maternity and paternity leave.

• Well-being benefits: Access to TotalPass, with options for gyms, sports, Pilates, martial arts, nutrition, and other wellness activities.

• Emotional well-being support: Access to emotional care platforms, including Psicologia Viva, ZenClub, and Vittude.

• Rewards and discounts: Access to the Mastercard Surpreenda rewards program.

• Professional development: Participation in a professional training and development program, subject to company policy.

• Inclusive workplace: A commitment to equal opportunity, welcoming qualified candidates regardless of race, color, religion, age, gender, nationality, disability, or family composition.

• Technical growth and ownership: Opportunities to lead architectural discussions, influence engineering standards, and work on challenging mobile development projects.