10+
Years of experience
Building and scaling production mobile applications
SENIOR ANDROID ENGINEER
DavidHernández
Senior Android Engineer•Software Engineer
Senior Android Engineer with 10+ years of experience building and scaling production mobile applications. Specialized in Kotlin, Jetpack Compose, Clean Architecture, and CI/CD, with strong experience in mobile architecture, end-to-end feature ownership, and production troubleshooting. Core contributor to high-impact engineering teams, driving technical decisions, code quality, and maintainable solutions.
Senior Android Engineer with 10+ years of experience building and scaling production Android applications, specializing in Kotlin, Jetpack Compose, Clean Architecture, CI/CD, mobile architecture, and end-to-end feature ownership.
Android
Core expertise
Kotlin, Jetpack Compose, and Android architecture
End-to-end
Ownership
From implementation through testing and release
Technical
Leadership
Architecture, code reviews, quality, and mentoring
Career
Experience
Selected roles, ownership, and engineering contributions.
Sr Android Developer
Yext
Delivered and evolved production Android features while contributing to architecture, engineering standards, and release improvements.
- Delivered and evolved production Android features using Kotlin, Jetpack Compose, and MVI.
- Resolved complex production issues and contributed to architectural decisions, code reviews, and engineering standards.
- Improved development and release workflows through CI/CD automation and maintainable, scalable solutions.
Sr Android Developer
Baubap
Shipped customer-facing Android features for critical fintech journeys while improving modularity, testing, and maintainability.
- Shipped customer-facing features for critical fintech journeys, including onboarding and transaction-related flows.
- Refactored legacy components into more modular, testable, and maintainable implementations.
- Contributed to unit testing, code quality, and CI/CD improvements in a fast-paced product environment.
Sr Android Developer
Zigatta
Developed and maintained Android features across client-driven projects using modern Android technologies.
- Developed and maintained Android features across client-driven projects using modern Android technologies.
- Diagnosed and resolved application issues while improving code quality, stability, and maintainability.
- Collaborated with cross-functional teams throughout planning, implementation, code review, and Agile delivery.
Sr Android Developer
Rappi
Built internal Android tooling and contributed to architecture, modularization, CI/CD, and engineering productivity improvements.
- Built internal Android tools and automation scripts that reduced repetitive engineering tasks.
- Contributed to architectural improvements, modularization, and the adoption of cleaner development practices.
- Supported CI/CD improvements, library evaluation, code reviews, and technical initiatives across the Android codebase.
Android Developer
Segunda mano
Delivered Android features while modernizing and improving a large legacy Android codebase.
- Delivered new Android features while modernizing and refactoring a large legacy codebase.
- Helped establish coding standards and architecture patterns to improve consistency and maintainability.
- Supported junior developers through onboarding, technical guidance, and code reviews.
Android Developer
Reservamos
Owned Android feature development from implementation through testing and production release.
- Owned the development of Android features from implementation through testing and release.
- Contributed to application architecture, library selection, data persistence, and API integration.
- Improved application stability and performance while supporting releases to Google Play.
Android Developer
Secretaría de Finanzas y Administración
Developed and maintained native Android applications using Java and established Android development practices.
- Developed and maintained native Android applications using Java and established Android development practices.
- Implemented application screens, business logic, local persistence, and integrations with internal systems.
- Collaborated with internal teams to meet functional requirements, troubleshoot issues, and deliver production releases.
Toolkit
Skills & Expertise
Focused capabilities for designing, building, and sustaining high-quality software.
Mobile Engineering
- Kotlin
- Java
- Jetpack Compose
- Android App Components
- Android Architecture Components
- Coroutines
- Flow
- KMP
- React Native
- WorkManager
Architecture
- Mobile Architecture
- Clean Architecture
- MVVM / MVI
- Modularization
- SOLID Principles
- Unidirectional Data Flow
- Repository Pattern
- Scalability & Maintainability
Engineering Excellence
- Testing & Code Quality
- Performance Optimization
- CI/CD
- GitHub Actions
- Code Reviews
- Production Troubleshooting
- Monitoring & Analytics
AI-Assisted Engineering
- OpenAI Codex
- Claude Code
- Prompt Engineering
- Agentic Coding Workflows
- LLM Integration
- Model Context Protocol (MCP)
Selected work
Featured Projects
Products and community projects built to solve, teach, and connect.
Android App
Atempo App
Take back control of your screen time. Atempo helps you become more aware of how much time you spend on social media and build healthier digital habits.
Podcast
AndroidDevPodcast
A podcast created to share Android knowledge with developer communities across LATAM.
YouTube
Tutoriales Hackro
Software development made practical. Tutorials, programming concepts, and Android development explained clearly.
TikTok
Android Questions
Android development explained simply. I answer questions, break down concepts, and share practical tips for Android developers.
Podcast
DevNights Podcast
A podcast where developers talk about software, engineering, technology, and developer culture.
TikTok
Study Tech Dave
Study sessions, one algorithm at a time. Time-lapses of DSA practice, problem-solving sessions, and coding study routines.
Community
Beyond the Code
Sharing knowledge and helping other engineers move forward.
Technical Content
Creating practical Android and software engineering content through tutorials, short-form videos, and developer education.
Learn moreDeveloper Community
Sharing Android knowledge, answering developer questions, and contributing to technical conversations across LATAM communities.
Learn moreMentoring
Supporting developers through technical guidance, code reviews, Android architecture discussions, and career-oriented conversations.
Learn moreReady when you are
Let's build something
worth shipping.
I'm open to new opportunities, collaborations, and meaningful engineering projects.
Get in touch