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)