Summary

Middle Android Developer with 4 years of experience in developing Android applications for industries like entertainment, education, and logistics. Proficient in building responsive, high-performance apps and integrating third-party services. Experienced in working in agile teams, contributing to feature development, and ensuring code quality through testing and reviews.

Technical proficiencies
  • Programming Languages: Kotlin, Java 
  • Frameworks & Libraries: Android SDK, Jetpack, Retrofit, Dagger, Coroutines
  • Development Tools: Android Studio, Gradle, Git, Firebase, Bitbucket
  • Architectures: MVVM, MVP
  • Integrations: RESTful APIs, Push Notifications
  • Testing: JUnit, Espresso, Mockito
  • DevOps & CI/CD: GitLab CI, Jenkins
  • Others: Material Design, App Optimization, Basic Security Practices
Professional experience

Entertainment Mobile App - Korea

Middle Android Developer, Jul 2022 - Present

Project description 

  • Developed an entertainment app for streaming music and videos with personalized recommendations and offline playback support

Responsibilities 

  • Implemented music and video streaming features using ExoPlayer for smooth playback.
  • Integrated RESTful APIs for fetching content and user preferences.
  • Optimized offline playback by implementing efficient caching with Room.
  • Collaborated with product managers to prioritize feature development in sprints.
  • Wrote unit and UI tests to ensure reliability of streaming and recommendation features.
  • Contributed to code reviews, ensuring adherence to coding standards

Technologies 

  • Kotlin, Android SDK, Jetpack Compose, ExoPlayer, Retrofit, Room, JUnit, Espresso, Firebase

Education Mobile App - India

Middle Android Developer, Mar 2021 – Jun 2022

Project description 

  • Built an educational app for accessing online courses, quizzes, and interactive learning materials.

Responsibilities 

  • Developed course browsing and quiz-taking features with dynamic UI components.
  • Integrated APIs for user progress tracking and content delivery.
  • Implemented offline content access using Room for data persistence.
  • Worked with designers to ensure UI consistency across tablets and phones.
  • Conducted testing with Espresso to validate UI interactions.
  • Assisted in optimizing app performance for low-bandwidth environments.

Technologies 

  • Kotlin, Java, Android SDK, Retrofit, Room, Firebase, JUnit, Espresso

Logistics Mobile App - Germany

Android Developer, Jun 2019 - Feb 2021

Project description 

  • Created a logistics app for tracking shipments and managing delivery schedules

Responsibilities 

  • Built shipment tracking UI with real-time GPS updates.
  • Integrated APIs for delivery status and route information.
  • Ensured Material Design compliance for intuitive navigation.
  • Wrote unit tests to validate core functionalities.  

Technologies 

  • Java, Android SDK, Retrofit, Firebase, JUnit

Event Management App - United States

Android Developer, Oct 2018 - May 2019

Project description 

  • Developed an app for managing event registrations and ticketing

Responsibilities

  • Implemented event browsing and ticket purchasing features.
  • Integrated APIs for payment processing and event data.
  • Optimized app for basic performance.

Technologies

  • Java, Android SDK, Retrofit, SQLite, JUnit

Food Delivery App - Vietnam

Android Developer, May 2019 – Jan 2021

Project description 

  • Created a retail app for browsing products, managing loyalty programs, and processing in-store payments.

Responsibilities

  • Built product catalog and loyalty points tracking features.
  • Integrated APIs for in-store payment processing and user profiles.
  • Ensured UI consistency with Material Design guidelines.
  • Wrote unit tests to validate core functionalities.

Technologies

  • Java, Android SDK, Retrofit, Firebase, JUnit
Certifications

Education:

University of Science

Major: Computer Science

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Navigating Our Cooperation Models

For when you have the roadmap and the process, but not the people. Tell us the skills and seniority you need, and we send shortlisted profiles. You interview; the engineer you choose joins your existing team and works under your management.

Ideal for businesses that:
Need specialized expertise without adding full-time headcount
Want to scale capacity up or down as the roadmap shifts
Need extra hands on an upcoming or in-flight project
For when you need a team that owns a product, not individuals filling gaps. You select the engineers from the profiles above; they work exclusively on your project alongside your in-house team, keeping context instead of rebuilding it every quarter.

Ideal for businesses that:
Run large or long-term projects that need consistent ownership
Want a stable team that accumulates domain knowledge
Need engineers committed to the business goal, not just the ticket
For when scope and timeline are already settled and budget certainty matters more than flexibility. We define the delivery path up front, so the cost is known before work starts.

Ideal for businesses that:
Have a set budget and a clearly documented scope
Work to a hard deadline
Run projects with defined goals and achievable milestones
For when you want a permanent extension of your engineering organization in Vietnam, your process and your tooling, running on our infrastructure and hiring pipeline across three ISO-certified centers.

Ideal for businesses that:
Are building long-term engineering capacity, not staffing a single project
Want dedicated infrastructure and a managed hiring pipeline
Plan to grow the team steadily over several years
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