Senior iOS Developer

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Remote Ukraine, Ukraine

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iOS (Objective-C/Swift)

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Cross Industry Solutions

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12/03/2026

Req. VR-121615

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Project description

We are seeking an experienced iOS developer to take ownership of an enterprise iPad application. The application is a mobile version of Java-based desktop system, enabling field engineers to capture well operations data on iPad and synchronize it with the central database via a custom REST-based sync service (AutoSync).

The primary objective is to upgrade the app to the latest iOS version while maintaining full backward compatibility with the existing data synchronization infrastructure. The role also includes ongoing bug fixes and feature enhancements.

Responsibilities
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iOS Upgrade: Migrate the iPad application from iOS 15.5 to the latest iOS, resolving all deprecations, breaking changes, and compatibility issues

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API Modernization: Replace deprecated APIs and UIKit/Foundation classes

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Bug Fixes: Diagnose and fix issues including Core Data crashes, sync failures, UI rendering problems, and memory leaks

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Feature Enhancements: Implement new form screens, spreadsheet views, and data entry workflows following the existing builder pattern architecture

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Core Data Maintenance: Handle schema migrations, add new entities/attributes, and ensure data integrity across multiple persistent stores

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Sync Reliability: Maintain and improve the bidirectional data synchronization between iPad and server, including conflict handling and error recovery

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Testing: Unit test coverage and establish regression testing practices

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Documentation: Document the architecture, upgrade decisions, and technical debt for long-term maintainability

Skills

Must have

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3+ years of experience

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Objective-C

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Manual Reference Counting (MRC) 

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Core Data

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UIKit (iPad)

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iOS SDK Deprecation & Migration

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Xcode & Instruments 

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SQL

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Git

Nice to have

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GIT

Other
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Languages

English: B2 Upper Intermediate

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Seniority

Senior

Remote Ukraine, Ukraine

Req. VR-121615

iOS (Objective-C/Swift)

Cross Industry Solutions

12/03/2026

Req. VR-121615

Apply for Senior iOS Developer in Remote Ukraine

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