Android Developer with Telephony and Messaging Skills

Posted last month

Only freelancers located in the U.S. may apply.U.S. located freelancers only

Summary

Skills: Android developer must have ALL of the following: Core Android Skills • Kotlin (primary) or Java • Android Studio mastery • Understanding of Android app architecture (MVVM, Jetpack) Telephony & Messaging Skills (Critical) This is where most developers fail — you need someone who has done this before: • CallScreeningService (for call blocking + call filtering) • TelecomManager • Default SMS App implementation • SMS Broadcast Receivers • SMS Content Provider access • Call Log permissions + management • Background services + foreground services • Doze mode + battery optimization handling Data & Storage • Room database • Encrypted storage • Efficient log retention + auto delete logic Monetization • Google Play Billing Library v6 • Subscriptions + free trials • Server side receipt validation (optional) Security • Permissions model (Android 13–15) • Scoped storage • Anti tampering basics

$6,000.00
Fixed-price
Intermediate
Experience Level
Remote Job
Ongoing project
Project Type

Skills and Expertise

Mandatory skills

Android App Development

Activity on this job

Proposals:5 to 10
Last viewed by client:4 days ago
Interviewing:
6
Invites sent:
30
Unanswered invites:
9

About the client

Member since May 19, 2026

USA
Kansas City10:49 AM
$25 total spent
1 hire, 0 active
Engineering & Architecture
Small company (2-9 people)

Explore similar jobs on Upwork

[$250] Frontend Uses Wrong Country Field to Determine Proof of Ad…Fixed-price‐ Posted 2 months ago

[$250] iOS - Report - Expense report loads infinitely after delet…Fixed-price‐ Posted 2 months ago

How it works

Create your free profile
Highlight your skills and experience, show your portfolio, and set your ideal pay rate.
Work the way you want
Apply for jobs, create easy-to-by projects, or access exclusive opportunities that come to you.
Get paid securely
From contract to payment, we help you work safely and get paid securely.