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)