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Arthur Damous

Senior Android Engineer

Open to international roles · Remote or relocation

I build Android apps that move money for millions.

Senior Android Engineer specializing in Kotlin & Jetpack Compose, with 6+ years shipping secure, scalable apps across fintech, agribusiness and logistics.

See my workDownload CV
Belém, Brazil · UTC−3LinkedInGitHub

At a glance

Native Android at scale, from fintech to the field.

Android · Kotlin

6+

years building native Android apps

Kotlin, Java and Jetpack Compose, since 2020

Millions

of active users on a Pix superapp

5 + freelance

companies across fintech, agribusiness, logistics and IT

Zup · Triboo · T10 · Terras · Pronto

2

promotions: Terras (I → II) and Zup (III → Senior)

Languages

  • EnglishFluent · C2
  • PortugueseNative

Time zone

Belém · UTC−3

Overlaps with US and European business hours

Local time in Belém

--:--

Working hours, in Belém time

  • Belém09:00–18:00
  • New York11:00–19:00
  • London06:00–14:00
  • Berlin05:00–13:00

Experience

6+ years shipping native Android.

From freelance apps to payment modules used by millions, with two promotions along the way.

  1. Zup Innovation

    Sep 2023 – Present · 3 yrs 3 mos

    Fintech · Superapp payments

    1. Senior Android Engineer

      PromotedDec 2024 – Present · 2 yrs
      • Engineered scalable payment modules for a high-traffic superapp handling Pix for millions of active users.
      • Improved app performance and stability with Kotlin Coroutines, Flow and Clean Architecture standards.
      • Accelerated release cycles by maintaining robust CI/CD pipelines on Jenkins.

    2. Android Engineer III

      Sep 2023 – Dec 2024 · 1 yr 4 mos
      • Led the development of core native Android features, improving modularity and code reuse.
      • Integrated high-security REST APIs for digital financial workflows with product and backend teams.
      • Mentored junior engineers on Kotlin, MVVM architecture and unit testing best practices.
    • Kotlin
    • Jetpack Compose
    • MVVM
    • Clean Architecture
    • Coroutines
    • Flow
    • Hilt
    • Retrofit
    • Room
    • Jenkins
    • Firebase
    Read case study

  2. Triboo

    Dec 2022 – May 2023 · 6 mos

    Fintech · Digital accounts

    1. Android Engineer

      Dec 2022 – May 2023 · 6 mos
      • Architected secure, high-performance digital account payment flows with Kotlin, MVVM and Clean Architecture.
      • Streamlined backend integration with cross-functional API teams, ensuring data integrity and security.
      • Reduced latency and improved thread management across payment screens with Coroutines and Flow.
    • Kotlin
    • MVVM
    • Clean Architecture
    • Coroutines
    • Flow
    • Hilt
    • Retrofit

  3. T10

    Aug 2022 – Feb 2023 · 7 mos

    Logistics · Last-mile delivery

    1. Android Engineer

      Aug 2022 – Feb 2023 · 7 mos
      • Developed and maintained a mission-critical delivery driver app with Kotlin, MVVM and Firebase Firestore.
      • Implemented reactive data streams with Coroutines and Flow to power real-time delivery tracking.
      • Integrated Koin dependency injection to improve testability and the stability of the modular architecture.

  4. Terras App Solutions

    Apr 2021 – Sep 2023 · 2 yrs 6 mos

    Agribusiness

    1. Android Engineer II

      PromotedSep 2021 – Sep 2023 · 2 yrs 1 mo
      • Delivered native mobile solutions for the agribusiness sector with Java, Kotlin and modern Jetpack libraries.
      • Migrated legacy MVP modules to MVVM and Clean Architecture, improving long-term maintainability.
      • Automated deployments by setting up CI/CD workflows with GitLab and GitHub Actions.

    2. Android Engineer I

      Apr 2021 – Sep 2021 · 6 mos
      • Contributed to the development and maintenance of native Android apps in Kotlin and Java.
      • Integrated RESTful APIs and local Room databases for offline data persistence.
      • Took part in team code reviews and unit testing.
    • Java
    • Kotlin
    • Jetpack Compose
    • MVVM
    • Clean Architecture
    • Room
    • Dagger/Hilt
    • GitLab CI
    • GitHub Actions
    Read case study

  5. Pronto Digital Solutions

    Oct 2020 – Apr 2021 · 7 mos

    IT services

    1. Android Developer

      Oct 2020 – Apr 2021 · 7 mos
      • Built and maintained Android solutions for the IT market with Kotlin and Java.
      • Integrated REST APIs with Retrofit and managed local storage with Room and SQLite.
      • Kept apps healthy with crash reporting and analytics on Firebase Crashlytics and Analytics.
    • Kotlin
    • Java
    • Retrofit
    • Room
    • SQLite
    • Firebase
    • Git

  6. Freelance

    Jan 2020 – Oct 2020 · 10 mos

    Independent clients

    1. Android Developer

      Jan 2020 – Oct 2020 · 10 mos
      • Designed and delivered custom end-to-end Android apps for external clients.
      • Owned the full lifecycle: UI implementation, API integration and Google Play Store releases.
    • Kotlin
    • Android SDK
    • Mobile UI
    • Google Play

Before Android · 2017–2020

IT roles from 2017 to 2020 that shaped how I think about data, users and reliability.

  • IT Analyst · TOTVS

    Nov 2019 – Mar 2020

    Implemented and maintained GoodData BI software for client organizations and turned operational datasets into actionable insights.

  • IT Support Analyst · Criminal and Forensic Centre

    Sep 2019 – Jun 2020

    Organized and extracted data from physical devices for forensic science.

  • IT Intern · Disk Solution

    Sep 2017 – Mar 2018

    Maintained computers, networks, printers and other devices.

Education

B.Sc. in Computer Science

Cesupa – Centro Universitário do Estado do Pará · 2016–2019

3rd place at Cesupa’s 1st Hackathon

Selected work

Case studies

Three projects from my professional work, told without breaking NDAs.

Side projects

Where I experiment.

Open-source projects where I explore Kotlin Multiplatform, Spring Boot and new Android APIs.

  • CodeBackend

    Chirp

    A full-stack Kotlin chat app: a Compose Multiplatform client for Android, iOS and Desktop, backed by a modular Spring Boot service split into user, chat and notification modules.

    Kotlin MultiplatformCompose MultiplatformSpring BootGradle convention plugins
  • Code

    Cryptocurrency App

    Lists cryptocurrencies and shows the details of each coin, built with Jetpack Compose, Hilt, Retrofit and Coroutines.

    Jetpack ComposeHiltRetrofitCoroutinesNavigation
  • Code

    Dictionary App

    A small dictionary app built with Retrofit, Dagger Hilt, MVVM, Clean Architecture and use cases.

    KotlinHiltRetrofitClean Architecture
  • Code

    YouTube Compose

    A YouTube UI clone built entirely with Jetpack Compose.

    KotlinJetpack ComposeMaterial
  • See everything on GitHubgithub.com/arthurdamous

Skills

The toolbox.

What I rely on every day to ship reliable Android apps.

  • Languages & UI

    • Kotlin
    • Java
    • Jetpack Compose
    • Compose Multiplatform
    • Android SDK

  • Architecture

    • MVVM
    • Clean Architecture
    • Multi-module
    • MVP migration

  • Async & DI

    • Coroutines
    • Flow
    • Hilt
    • Dagger
    • Koin

  • Data & networking

    • Retrofit
    • REST APIs
    • Room
    • SQLite
    • Firebase Firestore

  • Quality & delivery

    • Unit testing
    • Code review
    • Jenkins
    • GitLab CI
    • GitHub Actions
    • Play Store releases
    • Firebase Crashlytics
    • Firebase Analytics
    • Mentoring
Arthur Damous

Contact

Let’s build something great together.

I’m open to senior Android roles at international companies, remote or with relocation. The fastest way to reach me is email.

Email me

arthur.damous@gmail.com

LinkedInGitHubDownload CV
Open to international roles · Remote or relocation