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)