Freelancer profile translated to English.

Description

Hello, I'm Belén Gallego, a software engineer specialized in Android development with over 10 years of experience working on digital products for international companies in sectors such as banking, health, digital identity, and mobility.

Throughout my career, I have worked in both startups and large corporations like ING, ANWB, and iFeel, participating in the development of applications used by thousands of users and collaborating in agile and multidisciplinary teams.

My experience is mainly focused on:

Native Android development with Kotlin

Kotlin Multiplatform and Compose Multiplatform

Modern architectures (MVVM, modularization, Clean Architecture)

Jetpack Compose

Refactoring and modernization of legacy code

CI/CD integration and good quality practices

Mobile accessibility and security

Testing and maintenance of scalable applications

In addition to developing features from scratch, I am particularly comfortable improving existing products, optimizing architectures, and helping teams adopt modern technologies.

I consider myself an autonomous, problem-solving professional, and highly committed to product quality. I enjoy working in collaborative environments, sharing knowledge, and facing new technical challenges.

I am currently open to collaborating as a freelancer on Android or cross-platform projects, both in developing new applications and in the evolution and maintenance of existing products.

Industry field of expertise

Languages

Spanish
Native or bilingual
English
Native or bilingual
Dutch
Conversational

Workplace preferences

Can work on-site

Murcia (up to 50km)

Ifeel
Freelance Android Developer
December 2025 - May 2026 (5 months)
Madrid, Spain
At iFeel I have been part of a team which rapidly delivered new Android features from concept to release in a fast-paced team environment. Contributed to modernizing the codebase using Jetpack Compose and led architectural refactoring of legacy components.
Jetpack Compose Android Modular Architecture
ING,
Android Developer
September 2022 - August 2025 (2 years and 11 months)
Amsterdam, NH, Netherlands
At ING I was part of a developers squad, responsible for developing new features and maintaining features for the ING Bankieren app. I got new experience with Modular app architecture, CI/CD and Platform tools. I obtained the Blue Belt certificate for Mobile Android Security, and became a Security Champion. I am also proud of being an Accessibility Champion. Coaching other developers and UX designers to take in consideration accessibility for all users when creating new features.
Android Kotlin Information Security Accessibility
ANWB,
Android Developer
June 2019 - August 2022 (3 years and 2 months)
The Hague, Netherlands
At ANWB I was responsible for developing new features and maintaining Onderweg and Wegenwacht apps. Refactoring legacy code to match the latest Android standards using Jetpack Architecture components and MVVM architecture. New features are built using Kotlin, Coroutines, LiveData, ViewModel, all new UI elements are built using Jetpack Compose.
Kotlin Jetpack Compose Android Mapbox

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Technical Computer Engineering in Management
University of Murcia
2010
Computer Engineering and Management
Norwegian University of Technology (NTNU)
2011

Mobile Developer

Belen G.

Senior Mobile Developer. Android-iOS. KMP. Flutter

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