Senior Mobile Automation Engineer | PayJoy (Fintech – Global)

Mobile Automation | Generative AI | Chatbots | Backend Integration | Technical Documentation

As a Senior Mobile Automation Engineer at PayJoy, a global fintech providing smartphone-based credit across emerging markets (Asia, Africa, LATAM), I drive the technical development and deployment of automation solutions, Generative AI features, and mobile-centric chatbot integrations to improve product scalability and customer engagement.

Working remotely in a cross-cultural, multilingual environment (English & Spanish), I design scalable automation systems, build AI-enhanced chatbot workflows, and structure technical documentation to support growth and cross-functional alignment.

🚀Achievements

• Developed and deployed Generative AI features for fintech mobile apps across Asia, Africa, LATAM, including chatbot migration and integration with existing multi-channel platforms (Colombia, Panama, Peru).

• Built and optimized AI prompt engineering workflows and multilingual NLP models, enabling context-aware, natural language chatbot responses tailored to diverse regional user bases.

• Spearheaded the transition from legacy systems to a Generative AI-based environment, ensuring scalability, performance, and multilingual user experience across all platforms.

• Developed and deployed the integration of a new client type into PayJoy’s platform – managed full lifecycle: planning, backend development, rollout, and post-launch support.

• Created a centralized technical knowledge base, documenting system architecture, data flows, and automation pipelines.

💻Technology
Generative AI | NLP (Natural Language Processing) | Mobile Chatbots | BackEnd Development | Mobile Automation | Technical Documentation

🛠️Tools
Zendesk Ultimate | Slack | Jira | Confluence | Google Workspace

⏱ Agile Methodologies
Scrum | Kanban

🗣️ Languages of Work: English & Spanish
🌍 Cross-Cultural Team & Global Delivery

Senior Android Developer | Natura (E-commerce, LATAM & Global)

Android | Kotlin | API Integration | Code Quality | Testing | Google Play Compliance

Contributed to two high-impact Android projects at Natura, a global cosmetics company operating in seven Latin American countries, France, the US, and Malaysia.

Delivered robust, compliant, and user-focused mobile solutions while ensuring high code quality and alignment with business goals.

Demonstrated strong ability to ship features aligned with Google Play Store Policies and internal quality standards, enhancing overall user satisfaction and system stability.

🚀 Key Achievements
• Ensured 100% compliance with Google Play Store Policies, avoiding penalties and improving user retention.

✨ Key Projects

✅ Digital Magazine App
• Led migration to the latest Android versions, improving performance and compatibility as part of the Sales Experience Team.

✅ Consultora Natura App
Contributed within the Retrofit Team to enhance the seller experience:
• Updated the Birthday API to enable personalized promotions for consultants.
• Improved code quality by implementing unit, integration, and UI tests (JUnit, Espresso, Mockito), reducing production bugs and increasing reliability.

💻Technology
Android | Kotlin | Gradle | MVVM | Clean Architecture | Unit Tests | Integration Tests | JUnit | Espresso | REST APIs | Google Play Policies Compliance.

🛠️Tools
Android Studio | Bitbucket | Teams | Jira.

⏱ Agile Methodology
Scrum

Startup | Kotlin | Firebase | REST APIs | UI/UX | Performance Optimization

Proven expertise in delivering scalable, user-focused applications with modern design patterns and robust architecture. Skilled in developing from scratch and enhancing existing apps to meet evolving user and business needs.

🚀 Key Achievements
• Developed and maintained 6 Android applications, leveraging cutting-edge technologies to deliver seamless and scalable user experiences.
• Optimized app performance and UX, ensuring high reliability, responsiveness, and adherence to modern design patterns.

✨ Key Projects

🚀 Apps Created from Scratch (Kotlin)

✅ Compostar App
• Built a sustainability-focused app for managing organic waste data in Recife.
• Implemented dynamic splash screens, smart filters, OpenStreetMap integration, and real-time waste tracking.

✅ Timer App
• Designed and developed a multi-timer app, allowing users to track multiple tasks simultaneously.

✅ Links Pro App
• Created a quick-share solution enabling direct link sharing to an AWS server without opening the app.

✅ QR Maker App
• Developed a QR code generator for seamless in-person sharing during events.

🚀 App Maintenance & Enhancements

✅ Habitus App
• Migrated to AndroidX, redesigned 6+ screens, optimized backend services, and replaced Bluetooth with internet communication for better connectivity.
• Integrated REST APIs to enable seamless AWS server interactions.

✅ Genyo App
• Improved HR functionalities, enabling automated financial reports and enhanced employee data management.
• Fixed critical bugs and implemented new features to improve operational efficiency.

💻Technology
Android | Kotlin | Java | Firebase (Realtime, Firestore, Authentication) | Retrofit | Coroutines | LiveData | DataBinding | REST APIs | Gradle | Android SDK | UI/UX (Material Design, Constraint Layout, XML)

🛠 Tools
Android Studio | Git/GitHub | Azure DevOps | Trello

⏱ Agile Methodologies
Scrum | Kanban | Scrumban