Android Developer- Mobile | Vietnam

Job ID: 385996

Remote

Vietnam

2 - 4 years

About the Opportunity

This role is not just about building screens. You will work on apps where user journeys are directly linked to task completion, offer discovery, ad engagement, reward eligibility, wallet balance, referrals, retention, and revenue outcomes. The Android app is the core product surface where users discover offers, complete actions, earn rewards, interact with ads, and keep coming back.

We are looking for an Android Engineer who can build reliable, fast, and scalable app experiences for high-volume user flows. Someone who understands that in incentive-led apps, small issues like delayed reward updates, broken deep links, slow offer loading, poor ad placement, or crashes on low-end devices can directly impact revenue, user trust, and retention.

What You’ll Work On

You will own Android development across GreedyGame’s Incent App and House of Apps portfolio, including:

Reward-based user journeys such as offer listing, task completion, reward status, wallet, referrals, and user activity tracking

App monetization flows including rewarded ads, interstitials, native placements, banners, offerwall, and ad-led engagement modules

Consumer app features across gaming and utility app categories where retention, session time, and ad revenue are key business metrics

Campaign-driven experiences where different users may see different offers, tasks, rewards, and monetization placements

App-side integrations with backend systems for user events, offer tracking, reward validation, fraud signals, and campaign visibility

Performance improvements for scale-heavy Android apps running across a wide range of devices and OS versions

Role & Responsibilities

Build and maintain Android applications for Incent Apps, Offerwall-led products, and House of Apps

Develop user flows for offer discovery, task completion, reward unlocks, wallet updates, referrals, user milestones, and engagement loops

Integrate ad monetization SDKs and optimize ad placements without breaking user experience

Work on app-side event tracking to ensure user actions, offer completions, ad impressions, clicks, reward triggers, and funnel drops are captured accurately

Collaborate with Product and Growth teams to run experiments around offer visibility, reward positioning, onboarding, retention, and monetization

Partner with Backend teams to integrate APIs for campaign listing, user eligibility, reward status, transaction history, and fraud checks

Debug app issues that directly impact business metrics, including broken reward flows, incorrect tracking, delayed status updates, crashes, ANRs, and low-end device performance problems

Improve app performance around launch time, screen load time, API failures, offline handling, memory usage, and crash-free sessions

Own Android releases across internal testing, QA builds, Play Store rollout, staged releases, versioning, and hotfixes

Maintain clean, modular, and scalable Android code using modern Android architecture

Skills & QualificationsMust-Have

3-4 years of hands-on experience in Android app development using Kotlin

Must to have understanding of Android SDK, Jetpack Compose, MVVM, Coroutines, Room DB, REST APIs, and Gradle

2 years of experience building consumer-facing Android applications where performance, reliability, and user experience matter

Strong debugging skills across crashes, ANRs, memory leaks, API failures, and device-specific issues

Ability to work with Product, Design, Backend, QA, and Growth teams to convert business requirements into stable Android features

Comfortable working in fast release cycles with experiments, product iterations, and production fixes

Strongly Preferred

Experience working on reward apps, cashback apps, gaming apps, utility apps, loyalty apps, fintech consumer apps, or offerwall products

Experience with ad monetization SDKs such as AdMob, AppLovin, Meta Audience Network, Unity Ads, ironSource, or similar

Understanding of event tracking, attribution, and analytics tools such as Firebase, GA4, AppsFlyer, Branch, or similar

Exposure to reward systems, wallet flows, referral systems, user eligibility, transaction history, or payout-related flows

Experience optimizing apps for low-end Android devices and unstable network conditions

Understanding of ProGuard/R8, app size optimization, remote config, A/B testing, and Play Store release management

What Good Looks Like in This Role

Users are able to discover offers, complete tasks, and receive reward status updates without confusion or delay

Ad placements improve monetization without making the app feel spammy or broken

App events are tracked accurately so Product and Growth teams can trust funnel and revenue data

Crashes, ANRs, slow screens, and broken reward flows are identified and fixed quickly

New experiments can be shipped fast without destabilizing the app

The Android codebase becomes easier to scale across multiple apps in the House of Apps portfolio

Workplace TypeRemote

Employment TypeContract

Experience Levelassociate

Work Experience (years)2 - 4 years

Skills

appdesignsdkmobilemonetizationappsandroidgithub