iOS Developer

JustMarkets; United States; Remote; USD 120,000 - 170,000; Full time

Benefits offered by this job

Tax coverage

Support for Ukrainian entrepreneurs

20 vacation days

10 sick days

Public holidays

Medical insurance

Remote work option

Education budget

Language budget

Wellness budget

Job summary

JustMarkets is seeking a Senior iOS Developer to join the mobile team to work on a high-load, real-time data-driven product with a strong focus on performance and UX. You will collaborate with backend, QA, product and design teams to deliver robust iOS features and ensure seamless integration with services and APIs.

The role emphasizes deep Swift/UIKit knowledge, modern architecture, and testing. The company offers remote work options and comprehensive professional benefits as part of a fintech

Qualifications

• 5+ years of commercial iOS development experience.
• Strong Swift and UIKit skills.
• VIP or Clean Architecture knowledge.
• Experience with REST APIs and GraphQL.
• Unit and UI testing experience.

Responsibilities

• Develop and improve native iOS applications
• Write clean, reusable and maintainable code
• Build functional and user-friendly interfaces
• Integrate iOS apps with backend services and APIs
• Work with real-time data and complex product features
• Participate in code reviews and technical discussions
• Improve app performance, stability and user experience
• Prepare iOS features for testing and production with the team
• Collaborate with backend, QA, product and design teams

Skills

Swift

UIKit

Concurrency

VIP Architecture

REST/GraphQL

Testing

CI/CD

Multi-target Xcode

Tools

Apollo iOS

GRDB

Keychain

Fastlane

Git

Xcode

Job description

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)