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 iOS Developer to maintain and further develop a mature native iOS application for managing Bluetooth-enabled devices. The product also includes encrypted chats, audio and video calls, media functionality, and a companion Apple Watch application.
The project has been actively developed since 2018 and includes a large Swift codebase, multiple application targets, regional builds, and integrations with physical devices.
In this role, you will:
Maintain and further develop the native iOS application;
Investigate production issues and crashes;
Implement new features and support new iOS versions and devices;
Work with Bluetooth Low Energy, custom device protocols, background connections, and OTA firmware updates;
Maintain WebRTC calls, CallKit integration, encrypted chats, and secure local storage;
Support the Apple Watch application and background audio functionality;
Manage TestFlight and App Store releases;
Maintain multiple application targets and regional configurations;
Update dependencies and gradually improve legacy code;
Participate in code reviews and collaborate with development and QA teams.
Required experience and skills
5+ years of commercial iOS development experience;
Expert knowledge of Swift;
Strong commercial experience with UIKit, Storyboards, XIB, Auto Layout, and custom views;
Strong experience with RxSwift, RxCocoa, and reactive programming;
Practical experience with CoreBluetooth and BLE, including GATT, background modes, and connection stability;
Ability to read and modify Objective-C code;
Experience with local databases, Keychain, and sensitive or encrypted data;
Strong knowledge of Swift Package Manager;
Experience maintaining large multi-target Xcode projects;
Experience with fastlane, TestFlight, and App Store releases;
Strong production debugging skills;
Ability to work independently;
English level B2 or higher.
As a plus
Experience with RxBluetoothKit and OTA/DFU firmware updates;
WebRTC and CallKit experience;
Apple Watch or watchOS development experience;
Experience with end-to-end encryption technologies such as Olm or Matrix;
Experience with Realm and encrypted local storage;
GitLab CI, fastlane Match, and self-hosted macOS runners;
Experience supporting applications for the Chinese market.
Technology stack
Swift, Objective-C, UIKit, MVVM, RxSwift, RxCocoa, Moya, Alamofire, CoreBluetooth, RxBluetoothKit, Realm, WebRTC, CallKit, Firebase, SPM, GitLab CI, fastlane, watchOS.
What we offer
Fully remote, full-time cooperation;
A long-term product with an established user base;
Work with complex native mobile functionality and physical devices;
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.
