iOS Developer

We are looking for a Senior iOS Developer to join the JustMarkets mobile team. You will work on a high-load mobile product with many real-time data updates, complex business logic, and a strong focus on performance and user experience. Our team has unique expertise in research, analysis, and product development. By relying on technical insights and a data-driven approach, we create disruptive future-defining innovations of the fin-tech industry that remain our basis for success. Responsibilities - Develop and improve native iOS applications - Write clean, reusable and maintainable code - Build functional and user-friendly interfaces - Integrate iOS applications with backend services and APIs - Work with real-time data and complex product features - Take part in code reviews and technical discussions - Help improve app performance, stability and user experience - Prepare iOS features for testing and production together with the team - Work closely with backend, QA, product and design teams Requirements - 5+ years of commercial experience in native iOS development with strong knowledge of Swift and iOS SDK - Strong hands-on experience with UIKit (code-only, no Storyboards) and modern iOS development practices - Solid understanding of OOP, POP, SOLID principles and experience with VIP or Clean Architecture - Experience with asynchronous programming and concurrency using GCD, Swift Concurrency and Combine - Strong understanding of memory management, including ARC and retain cycles - Hands-on experience with REST APIs, GraphQL (Apollo iOS) and WebSocket - Experience with local data storage and iOS security practices, including SQLite/GRDB, Keychain and biometric authentication - Experience with unit and UI testing using XCTest/XCUITest - Experience with Git, Swift Package Manager, CI/CD and Fastlane - Experience with multi-target Xcode projects and application release processes Will be a plus - Experience in FinTech or real-time trading applications - Experience with Firebase and third-party analytics SDKs (Amplitude, AppsFlyer, etc.) - Experience with advanced iOS features such as App Extensions, deep linking and localization We offer - Tax expenses coverage for private entrepreneurs in Ukraine - Expert support and guidance for Ukrainian private entrepreneurs - 20 paid vacation days per year - 10 paid sick leave days per year - Public holidays as per the company’s approved Public holiday list - Medical insurance - Opportunity to work remotely - Professional education budget - Language learning budget - Wellness budget (gym membership, sports gear and related expenses)