Android developer experienced in building internal and mission-critical mobile solutions for government and private sector. Skilled in Kotlin, Jetpack Compose, Clean Architecture, Firebase, and REST API integration. Also building shared business logic using Kotlin Multiplatform to reuse code across Android and iOS, with backend experience in Spring (Java/Kotlin) and automation using Python.

Saul Martinez

Android developer experienced in building internal and mission-critical mobile solutions for government and private sector. Skilled in Kotlin, Jetpack Compose, Clean Architecture, Firebase, and REST API integration. Also building shared business logic using Kotlin Multiplatform to reuse code across Android and iOS, with backend experience in Spring (Java/Kotlin) and automation using Python.

Available to hire

Android developer experienced in building internal and mission-critical mobile
solutions for government and private sector. Skilled in Kotlin, Jetpack Compose,
Clean Architecture, Firebase, and REST API integration. Also building shared business
logic using Kotlin Multiplatform to reuse code across Android and iOS, with backend
experience in Spring (Java/Kotlin) and automation using Python.

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Experience Level

Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Intermediate
Intermediate
Intermediate
Intermediate
Intermediate
Intermediate
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Language

Spanish; Castilian
Fluent
English
Intermediate

Work Experience

Android Developer at Ministerio de Justicia y Seguridad Pública de El Salvador
July 1, 2023 - Present
Led mobile development projects from inception to deployment.
Android Developer at Informática Móvil de El Salvador
June 30, 2018 - October 6, 2025
Led the development of Android applications. Developed augmented reality applications for events. Collaborated with another company in the development of mobile games. Developed financial applications for mobile. Developed delivery applications for mobile.
Mobile Developer / Android Developer at Tapps S.A. de C.V.
June 30, 2023 - October 6, 2025
Developed Android applications as a Mobile Developer. Contributed to mobile product development during the Nov 2019 - Jun 2023 period.
Android Developer at Informatica Móvil de El Salvador
June 1, 2018 - October 6, 2025
Led the development of Android applications. Developed augmented reality applications for events. Collaborated with another company in the development of mobile games. Developed financial applications for mobile. Developed delivery apps for mobile.
Mobile Developer at Apps S.A. de C.V.
November 1, 2019 - October 6, 2025
Led the development of Android applications, including augmented reality apps for events, mobile games, financial apps, and delivery apps.
Mobile Developer at Apps S.A. de C.V.
June 1, 2023 - October 6, 2025
Developed internal Android applications to streamline customs processes. Spearheaded Android mobile development to expedite passenger entry and exit at airports. Created an Android application to accelerate cargo processing. Developed Android applications for residential complexes. Implemented device tracking solutions for sales control. Supported internal mobile operations.
Mobile Developer at Dirección General de Aduanas de El Salvador
June 1, 2023 - October 6, 2025
Developed internal Android applications to streamline customs processes. Spearheaded Android mobile development that expedited passenger entry and exit at airports. Created an Android application to accelerate cargo processing. Developed Android applications for residential complexes. Implemented device tracking solutions for sales control. Developed internal mobile applications to support business operations.
Android Developer at Ministerio de Justicia y Seguridad Pública de El Salvador
July 1, 2023 - Present
Led the development of Android applications for internal use; implemented biometric mobile solutions; contributed to mobile projects across government.
Android Developer at Ministerio de Justicia y Seguridad Pública de El Salvador
July 1, 2023 - Present
Led mobile development projects from inception to deployment. Developed internal Android applications for Ministry use. Managed biometric development initiatives for mobile platforms. Developed backend systems using Java Spring and Kotlin Spring frameworks.
Android Developer at TAPS S.A. de C.V.
November 1, 2019 - October 6, 2025
Developed Android applications for internal use and led mobile development for internal projects.
Android Developer at Dirección General de Aduanas de El Salvador
June 1, 2023 - October 6, 2025
Developed internal Android applications to streamline customs processes. Spearheaded Android development that expedited passenger entry/exit at airports. Created applications to accelerate customs cargo processing. Developed Android apps for residential complexes. Implemented device tracking solutions for sales control. Supported business operations with internal mobile apps.
Android Developer at TAPPS S.A. de C.V.
November 1, 2019 - October 6, 2025
Led development of Android applications. Developed augmented reality applications for events. Collaborated with another company in the development of mobile games. Developed financial applications for mobile. Developed delivery applications for mobile.
Android Developer at Dirección General de Aduanas de El Salvador
June 1, 2023 - October 6, 2025
Developed internal Android applications to streamline customs processes. Spearheaded Android mobile development that expedited passenger entry and exit at airports. Created an Android app to accelerate customs cargo processing. Developed Android applications for residential complexes. Implemented device tracking solutions for sales control. Developed internal mobile applications to support business operations.
Android Developer at Ministerio de Justicia y Seguridad Pública de El Salvador
July 1, 2023 - Present
Led the development of Android applications. Developed augmented reality applications for events. Implemented biometric development initiatives for mobile platforms.
Android Developer at Tapps S.A. de C.V.
July 1, 2011 - June 1, 2018
Led Android app development across multiple domains (finance, delivery, internal apps). Built shared mobile solutions and backend services, leveraging Kotlin/Java, Jetpack components, and REST APIs. Implemented API integration, local persistence, testing, and reliability improvements.
Android Developer at Informática Móvil de El Salvador
November 1, 2019 - June 1, 2023
Developed mobile solutions for government and private sector; built apps to accelerate business processes, including API integrations and local persistence; led UX improvements and reliability enhancements.
Android Developer at Dirección General de Aduanas de El Salvador (Ministerio de Justicia y Seguridad Pública de El Salvador)
July 1, 2023 - Present
Led Android app development across multiple domains to improve customs cargo processing; built a mobile app with API integration and persistence, focusing on reliability and user flow.

Education

Bachelor's degree in Computer Engineering at Francisco Gavidia University
January 1, 2014 - December 31, 2020
at Francisco Gavidia University
January 1, 2009 - January 1, 2013
at Francisco Gavidia University
January 1, 2014 - January 1, 2014
Bachelor's degree in Computer Science at Francisco Gavidia University
January 1, 2009 - January 1, 2013
Programming Languages Coursework at Self-guided study
January 1, 2014 - January 1, 2014
Ingeniería en Computación at Francisco Gavidia University
January 1, 2009 - January 1, 2013

Qualifications

Add your qualifications or awards here.

Industry Experience

Software & Internet, Government, Education, Professional Services, Other, Telecommunications