Senior iOS Developer

Quick Facts

• Role: Senior iOS Developer (B2B)

• Work model: Remote from Poland

• Rate: up to 160 PLN/hour

• Start date: ASAP

• Contract period: until 31 December 2026 (extension possible)

• Benefits: Multisport, Luxmed

Description

We are hiring two Senior iOS Developers to strengthen experienced mobile engineering teams working on a large consumer iOS application used by 10 million+ users. You will develop native iOS functionality and support rollout to additional European markets, with a focus on performance, stability, modular architecture, accessibility, and engineering quality. The role combines hands-on feature delivery with architecture design, code quality ownership, and collaboration in an agile cross-functional environment.

Responsibilities

• Develop, extend, and maintain native iOS application functionality for high-traffic usage
• Drive performance, quality, stability, and application responsiveness
• Refactor existing code and evolve a scalable, maintainable architecture
• Deliver high-quality, test-covered code (unit, snapshot, and integration tests)
• Design and implement reusable Design System components with accessibility requirements
• Participate in code reviews; uphold engineering standards, security, and performance
• Co-create CI/CD processes: build pipelines, test automation, and release coordination
• Document technical specifications, configuration instructions, and architectural decisions
• Identify technical debt proactively and propose practical ways to reduce it

Requirements

• Minimum 5 years of experience building and maintaining production iOS applications
• Excellent Swift and commercial experience with SwiftUI (layout, state management, performance optimization)
• Practical Swift Concurrency: async/await, structured concurrency, actors, task cancellation
• Knowledge of MVVM, Clean Architecture, and SOLID; familiarity with composable architectures such as TCA
• Experience with modularization and Swift Package Manager, including internal/private packages and framework integration
• Hands-on experience with XCTest plus snapshot and integration tests
• Experience with CI/CD, fastlane, build pipelines, release processes, and test automation
• Good Git knowledge (branching strategies, PR practices, conflict resolution)
• Ability to work independently in agile cross-functional teams
• English level B2 or higher

Preferred Qualifications

• Experience with Tuist for project generation and workspace management
• Performance profiling using Instruments; monitoring with logs and traces
• Practical experience with WKWebView, including native-to-JavaScript communication, authentication, navigation, performance, and security
• Experience using LLM/agent-based developer tools to support the software development lifecycle

Benefits

• Multisport
• Luxmed