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Android engineer and team lead with experience developing and maintaining Android and cross-platform apps (Kotlin/Java, Kotlin Multiplatform, Angular, Capacitor). Skilled in building clean architectures, integrating services (Firebase), and delivering features end-to-end with Retrofit, Coroutines, and flows. Also experienced in testing (JUnit, Mokka/Mokit o) and performance/reliability tasks such as debugging crashes and payment data flows. Focused on maintainable solutions: MVVM/Hilt/DI, solid architecture, and dependency/vulnerability management. Contributed to multiple production mobile apps (consumer, internal banking, government, and location-based venues) and modernized front-end tooling and libraries where needed.…Android engineer and team lead with experience developing and maintaining Android and cross-platform apps (Kotlin/Java, Kotlin Multiplatform, Angular, Capacitor). Skilled in building clean architectures, integrating services (Firebase), and delivering features end-to-end with Retrofit, Coroutines, and flows. Also experienced in testing (JUnit, Mokka/Mokit o) and performance/reliability tasks such as debugging crashes and payment data flows. Focused on maintainable solutions: MVVM/Hilt/DI, solid architecture, and dependency/vulnerability management. Contributed to multiple production mobile apps (consumer, internal banking, government, and location-based venues) and modernized front-end tooling and libraries where needed.

Yeffry Rodriguez

Web Developer, Programmer, App Developer, +2

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Android engineer and team lead with experience developing and maintaining Android and cross-platform apps (Kotlin/Java, Kotlin Multiplatform, Angular, Capacitor). Skilled in building clean architectures, integrating services (Firebase), and delivering features end-to-end with Retrofit, Coroutines, and flows. Also experienced in testing (JUnit, Mokka/Mokit o) and performance/reliability tasks such as debugging crashes and payment data flows. Focused on maintainable solutions: MVVM/Hilt/DI, solid architecture, and dependency/vulnerability management. Contributed to multiple production mobile apps (consumer, internal banking, government, and location-based venues) and modernized front-end tooling and libraries where needed.…Android engineer and team lead with experience developing and maintaining Android and cross-platform apps (Kotlin/Java, Kotlin Multiplatform, Angular, Capacitor). Skilled in building clean architectures, integrating services (Firebase), and delivering features end-to-end with Retrofit, Coroutines, and flows. Also experienced in testing (JUnit, Mokka/Mokit o) and performance/reliability tasks such as debugging crashes and payment data flows. Focused on maintainable solutions: MVVM/Hilt/DI, solid architecture, and dependency/vulnerability management. Contributed to multiple production mobile apps (consumer, internal banking, government, and location-based venues) and modernized front-end tooling and libraries where needed.

Available to hire

Android engineer and team lead with experience developing and maintaining Android and cross-platform apps (Kotlin/Java, Kotlin Multiplatform, Angular, Capacitor). Skilled in building clean architectures, integrating services (Firebase), and delivering features end-to-end with Retrofit, Coroutines, and flows. Also experienced in testing (JUnit, Mokka/Mokit o) and performance/reliability tasks such as debugging crashes and payment data flows.

Focused on maintainable solutions: MVVM/Hilt/DI, solid architecture, and dependency/vulnerability management. Contributed to multiple production mobile apps (consumer, internal banking, government, and location-based venues) and modernized front-end tooling and libraries where needed.

Skills

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Language

Work Experience

Android Developer (base project + features) at SIGPA (open distribution closed / base project)

September 1, 2023 - March 1, 2024

Built and maintained a product enabling launch of processing steps after users complete invited challenges. Contributions included documentation for governance, clean architecture using MVVM and Hilt, and test writing with tools such as Mokkito. Implemented error handling with a custom handler class and developed customized components for the whole project.

Android Engineer (Multiple products) at Fourvenues / External clients

July 1, 2023 - March 1, 2024

Worked on several app lines: SIGPA (governance/invite-challenges processing), RU DO App (employee daily-use app) and Loteria Laof ia/castillo (notification service integration and XML/component creation). Focused on clean architecture with MVVM and Hilt, refactoring Compose UI using safer component patterns, implementing tests with Mockk/Mockito, and preparing store releases. Also supported legacy Android/third-party dependency fixes, crash debugging, and CI/CD code-review management via VPN and Jenkins cloud.

Android Developer at LOTERIA CASTILLO

July 1, 2023 - March 1, 2024

Developed Android app from scratch. Implemented clean architecture with MVVM and Hilt. Developed custom components for the whole project using XML. Created notification service and wrote tests with MockK. Prepared upload and store publishing steps; maintained daily contact with the product owner.

Android Developer at RUDO APP (daily use app)

July 1, 2023 - March 1, 2024

Prepared clean architecture base using MVVM and Hilt/Compose setup. Built custom components across the app and replaced XML views with Compose equivalents. Wrote tests using Mokkito. Managed Play Store publishing tasks.

Android Engineer - Team Lead at Fourvenues Inc

June 10, 2023 - June 18, 2026

Developed and maintained Android and Angular/Capacitor applications. Built clean project architecture and implemented reusable/custom components. Worked across Android (Java/Kotlin) and cross-platform stacks including Jetpack Compose and Capacitor, using Retrofit, Coroutines, and Flows. Integrated backend services with Firebase and performed unit testing with JUnit using Mokka/Mokit o. Led refactors to improve maintainability and architecture; created device communication plugins for Bluetooth/RFID/printers. Contributed to multiple app products including QR management/payment flows and a venue-focused app for nightclubs/festivals.

Android Engineer / Team Lead at Fourveunes Inc

June 10, 2023 - June 18, 2026

Developed and maintained Android and Angular/CAPACITOR multi-platform applications. Built and maintained a clean, solid architecture base, created custom reusable components, and implemented new scoped features. Tech stack included Kotlin/Java/TypeScript, Jetpack Compose and Kotlin Multiplatform (KMP) where applicable, plus Retrofit, coroutines, and flows. Implemented service integrations with Firebase. Performed testing with JUnit and mocking tools (Mokka/Mokito). Used Gradle and Cloud Code as an AI assistant interface; handled UI design/material design; created and maintained service layers and network calls, focusing on scalability and maintainability.

Android Developer at Hundred Burgers

June 1, 2023 - August 1, 2023

Developed Android app for restaurant ordering and delivery, including reservations management. Wrote tests for payment data flows and implemented API changes for new API versions while preserving backward compatibility with older app versions, including new views and updated data flows following clean/solid principles.

Android Developer at BBVA (internal distribution)

June 1, 2023 - Present

Developed native Android app for bank employees (internal distribution). Fixed and compiled an outdated card reader dependency not supported by the creator since 2018. Supported release and maintenance tasks for internal employees.

Android / Angular (Team Lead)

June 1, 2023 - November 1, 2025

Led and delivered multiple mobile app products and integrations. Included migrations (ionic 3 to ionic 6), dependency updates to address vulnerabilities, and play store publishing workflows. Worked on several applications for internal/external distribution, crash fixing, and code review management across environments using Jenkins Cloud. Implemented VPN and automated checks to meet submission requirements.

Android - Angular - Capacitor Functions Developer and Maintenance at Fourvenues

March 1, 2023 - November 1, 2025

Developed and maintained Android and Angular/Capacitor applications using Java, Kotlin, and TypeScript. Implemented API calls with Retrofit, Coroutines, and Flows. Designed and maintained material-based UI/UX and service integrations with Firebase. Wrote unit tests with JUnit using Mokka/Mokit o and supported payments/payment-data flows while keeping compatibility with multiple versions.

Android Developer at EMT Valencia

January 1, 2023 - Present

Worked on government/public transport mobile application for city users. Debugged and fixed reported crashes. Managed code reviews and testing gates across environments using Jenkins Cloud; validated tests and minimum requirements before submitting pull requests to the Play Store.