Senior Mobile Developer – React Native

Role Overview

• Develop, evolve and maintain Android mobile applications using React Native, ensuring quality, performance, security and a strong user experience.
• Implement features with a focus on usability, accessibility and visual consistency, following standards and the design system where applicable.
• Integrate the application with REST and/or GraphQL APIs, ensuring state management, error handling, caching and synchronization strategies.
• Work on app architecture (layer organization, navigation, state management and modularization), ensuring scalability and maintainability.
• Ensure continuous quality through testing (unit, integration and E2E when applicable), code reviews and engineering best practices.
• Ensure compatibility with different Android versions and multiple devices, monitoring crashes and performance.
• Collaborate with UX/UI, BackEnd, QA and DevOps teams to ensure functional and technical coherence of deliverables.
• Support continuous integration, versioning and release processes, ensuring stability and traceability of releases.
• Identify and resolve defects, performance bottlenecks (startup time, rendering, memory usage) and security vulnerabilities.
• Produce and maintain technical documentation (app architecture, patterns, guides) and technical evidence of delivered work.
• Meet deadlines, targets and obligations established in the work plan and the contract.

Requirements

• Required Education:
• Bachelor’s degree in one of the following fields: Systems Analysis, Computer Science, Data Processing, Information Systems, Informatics, Computer Engineering or other Information Technology areas; OR a Bachelor’s degree in any field with a postgraduate specialization in Information Technology.
• Desired/Preferred Certifications:
• React Native / Mobile Development (training tracks and certifications) – a plus.
• Meta React Native / Mobile Developer (when applicable) – a plus.
• Google Associate Android Developer (or equivalent) – a plus.
• Cloud Computing: AWS Certified Developer – Associate / Azure Developer Associate (AZ-204) – a plus.
• Testing: ISTQB Foundation Level – a plus; Mobile Test Automation (Detox/Appium) – a plus.
• Security: OWASP Mobile Top 10 / Secure Coding – a plus.
• Agile: Scrum Developer (PSD) / Scrum Master (PSM I / CSM) – a plus.
• ITIL 4 Foundation – a plus.
• Experience in mobile development with React Native (JavaScript and/or TypeScript).
• Knowledge of mobile application architecture (navigation, state management, layers, modularization).
• Experience consuming and integrating REST and/or GraphQL APIs, including authentication and error handling.
• Knowledge of state management (Redux/RTK, Zustand, MobX or similar).
• Knowledge of React Navigation and navigation patterns (stack, tabs, deep linking).
• Experience with build and distribution tools and practices (Android Studio, Gradle, Play Store, version control).
• Knowledge of mobile performance and optimization (profiling, rendering, memory usage, offline-first).
• Experience with automated testing (Jest, Testing Library, Detox/Appium when applicable).
• Knowledge of mobile application security (secure storage, token protection, OWASP Mobile).
• Experience with version control (Git) and working in agile squads (Scrum/Kanban).
• Knowledge of CI/CD for mobile (pipelines, builds, signing, distribution).
• Ability to understand functional and non-functional requirements and translate them into technical solutions.
• Ability to produce basic technical documentation for developed solutions.

Tech Stack

• Android
• AWS
• Azure
• Cloud
• Gradle
• GraphQL
• JavaScript
• Jest
• MobX
• React
• React Native
• Redux
• TypeScript

Benefits

• Health plan
• Dental plan
• Prudential insurance: life insurance, funeral assistance and a newborn benefit are provided to the employee free of charge, subject to the insurer’s specific rules.
• Meal Voucher or Food Voucher
• Transportation Voucher: provided for the commute (home–work–home); 6% of the salary will be deducted monthly, limited to the benefit value (optional).
• Day off: time off granted for the employee’s birthday, to be taken on the date and/or within the birthday month.
• Payroll-deductible loan
• Partnerships and discounts (educational institutions, gyms, language courses and others)
• Workplace exercise/stretching sessions