Simera Professional Key (SPK)

Sergio Horacio M

Bolivia

Senior Lead Android Developer

$ 5,200/month

10+ yrs exp

Senior Mobile Architect & Developer | Flutter, Android & AI Workflows With 14+ years of experience in mobile software development, I help companies build, scale, and modernize enterprise-grade mobile applications. My expertise spans native Android (Kotlin, Jetpack Compose), iOS (Swift), and Flutter (BLoC), with a deep focus on Clean Architecture, real-time data streaming (WebSockets), and offline-first reliability. Why work with me: Proven Track Record: Led high-stakes mobile migrations…

Skills

  • Agile
  • Android Development
  • AWS
  • Azure
  • Git
  • GitHub
  • Java
  • JavaScript
  • MySQL
  • PHP
  • React
  • Scrum
  • SQLite
  • Swift
  • Typescript
  • Visual Studio
  • Xcode
  • JavaScript ES6
  • Android
  • Android SDK
  • Android Studio
  • API
  • API Integration
  • Dart
  • Figma
  • Firebase
  • Flutter
  • iOS
  • Jetpack
  • Kotlin
  • MVC
  • MVVM
  • OpenCV
  • Pentaho
  • ReactJS
  • Springboot
  • SwiftUI
  • Visual Studio Code
  • RESTful APIs
  • WebSockets
  • Clean Architecture
  • Spring
  • Google Cloud Platform (GCP)
  • Integration
  • Java.
  • Android developer
  • GPRS
  • Spring boot
  • Jetpack Compose
  • Cloud Architecture
  • REST APIs
  • MSQL
  • SVN
  • ERP Integration
  • IA API Integration
  • Git Hub
  • CRM Architecture
  • Room
  • Clean Architech
  • AI Integration
  • PSE Integration
  • REST API Integrations
  • RxSwift
  • Type Script

Sergio Horacio M

Bolivia

Senior Lead Android Developer

$ 5,200 /month

10+ yrs exp

Senior Mobile Architect & Developer | Flutter, Android & AI Workflows With 14+ years of experience in mobile software development, I help companies build, scale, and modernize enterprise-grade mobile applications. My expertise spans native Android (Kotlin, Jetpack Compose), iOS (Swift), and Flutter (BLoC), with a deep focus on Clean Architecture, real-time data streaming (WebSockets), and offline-first reliability. Why work with me: Proven Track Record: Led high-stakes mobile migrations…

Skills

  • Agile
  • Android Development
  • AWS
  • Azure
  • Git
  • GitHub
  • Java
  • JavaScript
  • MySQL
  • PHP
  • React
  • Scrum
  • SQLite
  • Swift
  • Typescript
  • Visual Studio
  • Xcode
  • JavaScript ES6
  • Android
  • Android SDK
  • Android Studio
  • API
  • API Integration
  • Dart
  • Figma
  • Firebase
  • Flutter
  • iOS
  • Jetpack
  • Kotlin
  • MVC
  • MVVM
  • OpenCV
  • Pentaho
  • ReactJS
  • Springboot
  • SwiftUI
  • Visual Studio Code
  • RESTful APIs
  • WebSockets
  • Clean Architecture
  • Spring
  • Google Cloud Platform (GCP)
  • Integration
  • Java.
  • Android developer
  • GPRS
  • Spring boot
  • Jetpack Compose
  • Cloud Architecture
  • REST APIs
  • MSQL
  • SVN
  • ERP Integration
  • IA API Integration
  • Git Hub
  • CRM Architecture
  • Room
  • Clean Architech
  • AI Integration
  • PSE Integration
  • REST API Integrations
  • RxSwift
  • Type Script

Senior Lead Android Developer

Unosquare
April 2023 - present

Unosquare is a full-cycle digital engineering company that builds software and technology solutions for growing businesses, especially those in regulated and data-intensive industries. Rebuilt a legacy Android app using Kotlin and Jetpack Compose, improving usability and reliability for 30,000 Android users. Ensured the app worked well even with poor internet by managing local storage with Room and real-time updates via REST APIs. Enhanced delivery and product tracking using MVI and MVVM patterns, making the app faster and easier to use. Delivered a consistent experience for all by supporting the iOS team for 45,000 users and cross-platform alignment for 5,000 stores. Techstack: Android, Kotlin, Jetpack Compose, MVVM, MVI, Room, REST APIs, WebSockets, Clean Architecture, ViewModels, Use Cases, Repositories, Effects & States patterns, Offline-first design, Async data fetching, XML Layouts (legacy support), Swift (iOS), Segment, DataDog, Firebase Crashlytics, Git, Agile, Scrum.

Senior Lead Android Developer

Trueforce
January 2022 - March 2023

Trueforce is a nearshore software development company that delivers web, mobile, and cloud solutions through dedicated teams. Developed a hospital management app using Kotlin and MVVM, enabling offline access to patient data, appointments, treatments, and medications for 77,000 users in 10,000 clinics. Allowed specialists to guide surgeries with a new feature using REST APIs and live video, handling 50 calls per day, each lasting 8 hours. Created an app for Android, iOS, and web with Flutter and Firebase, making it easier for users to access information and products. Improved app performance and user experience using Jetpack libraries, making routine tasks easier for medical staff. Techstack: Kotlin, Dart, Flutter, Java, Android SDK, iOS, Swift, MVVM, Jetpack, Jetpack Compose, MVI, Clean Architecture, ViewModels, Use Cases, Repositories, Effects & States patterns, Room, Firebase, REST APIs, Google Cloud Platform (GCP), Live video streaming, Android Studio, Visual Studio Code, Xcode, Agile, Scrum.

Senior Lead Developer

TRUEXTEND, Inc.
February 2021 - January 2022

Truextend is a California-based software company that uses a nearshore model with R&D centers in Latin America to extend engineering capabilities for businesses in North America. Gave over 10,000 students in underserved countries access to streaming lessons by developing an Android app using Kotlin and Jetpack. Improved connection reliability and reduced latency by 25% by integrating AWS services Cognito and Chime for video and user management. Built maintainable and scalable code with MVVM and Clean Architecture, enabling easier feature updates and onboarding for new users. Added external camera integration and video streaming using AWS Kinesis Video Streams and APIs, enhancing the learning experience. Techstack: Kotlin, Java, Android SDK, Jetpack, MVVM, Clean Architecture, Jetpack Compose, Amazon Web Services (AWS), AWS Chime, AWS Cognito, AWS Amplify, AWS Kinesis Video Streams, AWS Storage Gateway, AWS IAM, AWS Certificate Manager, APIs, REST APIs, Android Studio, Git, Material Design, Figma, Agile, Scrum.

Android Developer

Encora
January 2019 - December 2021

Fullstack Engineer

PIL Andina S.A.
January 2018 - December 2019

Mobile Developer

IVENTIVA
January 2014 - December 2017

Software Developer Mobile

Elicere, Inc.
January 2013 - December 2014

Mobile Developer

LYSoft
January 2011 - December 2013

Smart Scores

Communication
88
Role Fit
100
Adaptability
85
Problem-solving
90

Smart Skills

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