Jesús Arturo Marmolejo Martin

• Currently Consultant/contractor delivering Android projects for multiple clients.
• Responsibilities span greenfield development, architectural design, feature delivery, testing, and CI/CD enablement across enterprise environments.

Using the Jetpack libraries - such as Jetpack Compose, Kotlin Flows and Dagger-Hilt - developed the following features:

• Implemented edge cases and error handling for Make A Payment Flow
• Created and consumed brand-new GraphQL lightweight queries for Digital Card and Google Wallet provisioning using the Apollo Library.
• Implementation of edge cases and error scenarios across different screens and flows, such as Make A Payment and Special Financing, to ensure a proper user experience.
• Identified and addressed multiple bugs across different screens in the MVI flow to enhance system functionality and maintain high-quality standards.
• Collaborated with UI/UX team and product management to ensure understanding of business logic, applying knowledge to enhance bug resolution and feature enhancements.
• Accessibility check analysis for the different screens in the Feature module—Manage Account, Make a Payment, Special Offers, among others.
• Creation of documentation for the development flow on different screens, ensuring GraphQL queries work correctly along with the corresponding user and system events, error handling and edge cases, as well as troubleshooting and providing proper support for developer work tools.
• Implementation of analytics and creation of Dashboards on DataDog in order to analyze user flows, supervise overall health in the Feature module, and track user interaction across different screens.
• Developed and implemented Claude skills to automate and optimize workflows, ensuring adherence to architectural guidelines and coding best practices.
• Technologies: Android Jetpack, Jetpack Compose, Dagger/Hilt, Kotlin Flows, Material Design, MVI Architecture, PayPal Mobile Android SDK, Google Wallet, Data Dog, Harness, SonarQube, JUnit, Mockk, Roboelectric, Espresso, Claude, Github, Github Copilot.

• Built a technician-facing work-order app from the ground up using Kotlin, Jetpack Compose, and Material Design 3, applying MVVM with server-driven UI for scalable, reusable components.
• Implemented offline-first capabilities with Room and DataStore to ensure continuity in low-connectivity conditions.
• Established DI with Hilt/Dagger; integrated networking via Retrofit/OkHttp and camera features using CameraX.
• Collaborated closely with UI/UX for adaptive layouts; enforced code quality with SonarQube and maintained CI/CD through Azure DevOps.
• Strengthened reliability through unit and UI testing (JUnit, Mockito/MockK, Espresso, Robolectric).
• Technologies: Android Jetpack, Java, Kotlin, Dagger/Hilt, OkHttp, Retrofit, Docker, Jetpack Compose, Material Design 3, Jetpack DataStore, Room Database, JUnit, MockK, Robolectric, Jetpack CameraX, Github, SonarQube, Azure DevOps

• Contributed to a greenfield Navigation app for Android Automotive OS, implementing Google-provided architecture guidelines and API integrations.
• Built endpoint consumption logic and UI components for navigation data; persisted user preferences (favorites/frequent locations) using DataStore.
• Leveraged Coroutines/Flows for responsive data handling; ensured reliability via JUnit/Espresso in an MVVM architecture.
• Technologies: Android Jetpack, Java, Kotlin, Android Automotive OS, Jetpack Compose, Jetpack DataStore, Kotlin Coroutines, Kotlin Flows, Google Maps SDK, Google Places API, Protocol Buffers, JUnit, Espresso, MVVM Architecture, Gitlab, Gitlab Jobs.

• Led onboarding and technical prep for new consultants; developed sample Android apps demonstrating modern libraries, patterns, and best practices.
• Aligned materials with Google's Android documentation; emphasized MVP/MVVM/MVI/Clean Architecture and production-grade coding standards.
• Technologies: Android Jetpack, Java, Kotlin, Jetpack Compose, Jetpack DataStore, Kotlin Coroutines, Kotlin Flows, Google Maps SDK, Google Places API, JUnit, Espresso, MVVM Architecture, MVI Architecture Git, Github.

• Contributed to the Chase Mobile app (Kotlin, MVVM) within a modular, tile-based architecture; focused on Account Dashboard, Search, and Transactions.
• Integrated external services/partners to enable rewards and benefits; improved reliability and observability using feature flags (Split.io) and Firebase.
• Maintained CI/CD via Jenkins and upheld code quality with SonarQube; utilized Coroutines/Flows for scalable, responsive data pipelines.
• Technologies: Android Jetpack, Java, Kotlin, Kotlin Flows, Kotlin Coroutines, Git, Bitbucket, Jenkins, Split.IO, Firebase, Dagger, SonarQube.

• Completed intensive Android training (approx. 80% Kotlin, 20% Java); built apps end-to-end in Android Studio.
• Practiced MVP/MVVM/MVI/Clean Architecture, Jetpack libraries, and Google Play publishing workflows.
• Technologies: Android SDK, Kotlin, Java, Jetpack Compose, Kotlin Coroutines, Kotlin Flows, Live Data, Room Database, Google Play, Dagger, Dagger/Hilt, Koin, XML Layouts, View Binding, Data Binding.

• Supported and enhanced a finance platform integrating asynchronously with Mexico's SAT via real-time events.
• Implemented features for invoicing and credit/consignment/salary notes.
• Managed relational and non-relational data pipelines.
• Technologies: Vue, React-JS, Node-JS, AWS, Git, PostgreSQL, MongoDB

• Requirements were implemented to the development of a Web Application, which was intended to perform financial management and registry for the recruitment of new employees.
• A structure for display and user functionalities such as CRUD and payroll management.
• Additional processes related to the aforementioned data were also made to show statistical results in a graphical manner.
• Technologies: JavaScript, React, JSON, HTML, CSS
• A mobile/web App was developed for the control of packages and their transport.
• It features a log-in module and a screen to visualize the current location of package collectors and their transport route.
• It also had a code reader that indicated if the package corresponded with the assigned collector, avoiding any mismatches and wrong deliveries.
• This application connects through a WebService to a web page where the map with the current locations with the collector groups and their respective transports are shown.
• Technologies: React-Native, Node-JS, Socket, Google Maps

• Development of mobile applications using HTML and CSS templates with different types of user functionalities, such as tables, image file managing and lists that handle multiple pages through events on the client side.
• Technologies: HTML, CSS, Javascript