About Archysoft
Archysoft is a software development company with over 10 years of experience delivering solutions to clients across the United States and Western Europe.
We are looking for a Senior Android Developer to maintain and further develop a mature native application for managing Bluetooth-enabled devices. The product also includes encrypted chats, audio and video calls, media integrations, and a Wear OS companion application.
The role requires an independent engineer comfortable working with a large production codebase, complex Bluetooth functionality, and a reactive technology stack.
In this role, you will:
Maintain and further develop the native Android application;
Investigate production issues using Firebase Crashlytics;
Implement new features and support new Android versions and devices;
Work with a custom Bluetooth Low Energy protocol stack across several generations of devices;
Improve BLE connection stability, background operation, and foreground services;
Support DFU/OTA firmware updates;
Maintain WebRTC calls, real-time chats, encrypted data storage, and the Wear OS application;
Support Media3/ExoPlayer and Spotify integrations;
Manage releases through Google Play, Firebase App Distribution, and alternative channels;
Update dependencies, improve legacy code, reduce technical debt, and introduce unit tests;
Participate in code reviews and collaborate with development and QA teams.
Required experience and skills
5+ years of commercial Android development experience;
Expert knowledge of Kotlin and the ability to read and modify Java code;
Strong commercial experience with RxJava 3, RxAndroid, and RxKotlin;
Strong knowledge of the classic Android View system: XML, ViewBinding, and custom views;
Practical BLE experience, including GATT, services, characteristics, background restrictions, and connection stability;
Experience with Hilt or Dagger 2;
Experience with Room and Android Navigation Component;
Experience maintaining large multi-module Gradle projects;
Understanding of build variants, product flavors, and complex build configurations;
Experience with the full Google Play release lifecycle;
Experience maintaining and debugging production applications;
Ability to work independently;
English level B2 or higher.
As a plus
RxAndroidBle and OTA/DFU experience;
WebRTC and audio-routing experience;
Wear OS and Jetpack Compose experience;
Experience with end-to-end encryption, Olm/Matrix, or SQLCipher;
Media3, ExoPlayer, or MediaSession experience;
GitLab CI and fastlane;
Experience distributing applications outside Google Play or supporting the Chinese market.
Technology stack
Kotlin, Java, RxJava 3, XML, ViewBinding, MVVM, LiveData, Hilt/Dagger 2, Retrofit, OkHttp, Room, SQLCipher, RxAndroidBle, WebRTC, Media3, ExoPlayer, Firebase, Gradle, GitLab CI, fastlane, Wear OS.
What we offer
Fully remote, full-time cooperation;
A long-term product with an established user base;
Work with technically complex mobile functionality;
Professional development plan and regular feedback;
Compensation for approved courses and certifications;
20 paid working days per year for vacation and sick leave;
Salary reviews based on performance and professional growth.
Interview process
Introductory interview with a recruiter;
Technical interview;
Final interview with the client or project representative.
