HearText
Read & listen anywhere
Import EPUB, TXT, and PDF. Browse a cloud store, read with a customizable reader, and listen via system TTS or offline neural voice packs — with lock-screen controls and synced progress.
Privacy & product notes ↗
Available for senior Android roles
Steve Huang
Native Android craftsmanship for millions of users — Jetpack Compose, Generative AI, and privacy-first products that never leave the device.
About
Nine years shipping Android at enterprise scale — and building offline tools people can trust.
At Walmart Global Tech I lead reviews, ratings, and product sampling for the flagship app — Compose UI, LLM-assisted flows, CCM flags, and observability that keeps submission health visible.
Outside work I ship privacy-first Android apps: sealed audio, on-device gallery audits, offline password vaults, and read-aloud reading. Zero cloud when it shouldn't leave the phone.
Selected work
Personal apps — designed, built, and owned end to end.
Keyic
Offline password manager
No account, no Keyic cloud, no INTERNET permission. Encrypted
vault with Argon2id + AES-GCM / SQLCipher, Autofill, TOTP, generator,
security health, and KeePass / CSV import-export.
Skry
On-device gallery privacy
Gallery Health that stays on the phone. ML Kit OCR for privacy leaks, smart cleaner for duplicates and blur, and an encrypted Safety Vault. Nothing leaves this device — internet permission stripped.
View on GitHub ↗
SealRec
Hardware-key sealed audio
Tamper-proof offline recorder. Streams SHA-256 while capturing PCM,
signs with Android Keystore ECDSA (StrongBox preferred), and embeds a
custom WAV seal chunk — verify integrity fully on-device.
Experience
Where the craft was forged.
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Android Mobile Developer
Walmart Global Tech · Sunnyvale, CA
UGC team — reviews, ratings, and product sampling for the Walmart app. LLM-assisted Write-a-Review, Review Card redesign, Reviewer Community dashboard, OpenObserve/Splunk alerting, and 30+ ADA/TalkBack fixes.
Kotlin · Compose · Generative AI · MVVM/MVI · Appium · CCM flags
Play Store ↗ -
Android Mobile Developer
Axios · Arlington, VA
Led Discover in the Axios news app — Compose UI, dark mode, offline reading with Room, GraphQL via AWS AppSync, and Jenkins CI/CD on AWS.
Kotlin · Compose · GraphQL · Room · Dagger · Jenkins · AWS
Play Store ↗ -
Android Mobile Developer
ScentAir Technologies · Charlotte, NC
Diffuser control app — Bluetooth/Wi-Fi discovery, Firebase auth & sync, RxAndroid async flows, and a full UI overhaul shipped to Play Store.
Java · Kotlin · XML · RxAndroid · Firebase · Bluetooth
Play Store ↗ -
Android Mobile Developer
Onelife Fitness · McLean, VA
Member app for schedules, club hours, and class booking — Java/XML, Retrofit, Firebase notifications, and Play Store release ownership.
Java · XML · Retrofit · Firebase · Espresso · Jacoco
Play Store ↗ -
Android Mobile Developer
Cedar Fair / Carowinds · Charlotte, NC
Explore map with live ride status, Google Maps routing, offline storage, and TDD-focused delivery for park visitors.
Java · XML · Google Maps · Retrofit · RxJava · OkHttp
Play Store ↗ -
Android Mobile Developer
iFLYTEK · Hebei, China
Custom keyboard skins for the iFly input method — multi-density UI, Robotium/Espresso coverage, and design collaboration in Adobe XD.
Java · XML · Jetpack · RxJava · Espresso · Robotium
Skills
The toolkit behind the products.
Languages
Kotlin · Java · XML
Android
Compose · MVVM/MVI · Hilt · Room · WorkManager · ADA/TalkBack
AI & data
LLM integration · ML Kit · SQLite · MongoDB · Firebase
Networking
Retrofit · OkHttp · GraphQL · Google APIs · FCM
Quality
JUnit · Espresso · Mockito · Appium · Jacoco · Postman
Delivery
GitHub Actions · Jenkins · GCP · AWS · Figma · Jira
Contact
Let's build something millions will open every day.
Open to senior Android roles and thoughtful collaborations on privacy-first mobile products.
Virginia, United States · stevehuang.me