We are seeking a **Senior iOS Engineer** to develop mobile applications used globally by millions with a focus on user experience and innovative tech. You will work with innovative technologies and legacy Objective\-C code while focusing on beautiful, performant code and user experience. Apply now to contribute your expertise and creativity to impactful projects. **Responsibilities** * Build and maintain iOS applications using Swift and Objective\-C * Design solutions for open\-ended problems with a focus on user experience * Implement and maintain MVVM architecture pattern in app development * Integrate and consume REST APIs following RAML documentation * Write unit and integration tests using XCTest and XCUITest * Utilize build tools like Tuist, xcodebuild, GitHub Actions, and Circle CI for continuous integration * Analyze and optimize application performance * Identify and fix bugs in a timely manner * Collaborate with a globally distributed team effectively * Manage code repositories and workflows using GitHub Actions and Circle CI * Continuously improve code quality and development processes * Engage in open source contributions related to the project * Work with legacy Objective\-C codebases and modern Swift code * Communicate technical concepts clearly within the team * Manage time efficiently and work independently to meet deadlines **Requirements** * Strong experience with iOS development using Swift and Objective\-C (3\+ years) * Proficient knowledge of MVVM architecture pattern and UIKit * Experience integrating and working with REST APIs and RAML documentation * Familiarity with unit testing and UI testing frameworks such as XCTest and XCUITest * Experience with continuous integration tools including GitHub Actions and Circle CI * Knowledge of build tools like Tuist and xcodebuild * Ability to analyze and optimize application performance * Experience working in globally distributed teams * Strong problem\-solving and design skills for open\-ended solutions * Self\-starting attitude with good time management skills * Bachelor’s degree in Computer Science or related field or equivalent experience * Excellent communication skills in English (B2 Upper\-Intermediate level) **Nice to have** * Experience with Danger for automated code review * Familiarity with μFeatures architecture * Background in open source development