iOS Developer: Build Next-Gen Mobile Experiences

Compunnel Inc.; New York (NY); Hybrid; USD 110,000 - 170,000; Full time

Job summary

Compunnel, Inc. is seeking an experienced iOS Developer to design, build, test, and enhance mobile applications for a global user base. You will collaborate with designers, product owners, QA, and other engineers to deliver high-quality apps and share solving complex problems.

Required: strong Swift, UIKit with MVVM, REST API integration, XCTest/XCUITest tests, and modern Xcode workflows. Experience with GitHub Actions, CircleCI, Tuist, and Open-Source contributions is a plus; be ready to work

Qualifications

• Strong Swift and iOS development experience.
• Proficient with UIKit and MVVM architecture.
• Experience integrating mobile apps with REST APIs.
• Experience with XCTest/XCUITest for testing.
• Familiarity with CI/CD tools like GitHub Actions/CircleCI.

Responsibilities

• Design, develop, maintain, and enhance iOS applications.
• Write clean, testable code and improve existing codebases.
• Collaborate with designers, product owners, QA, and engineers.
• Analyze defects and optimize performance.
• Develop tests using XCTest/XCUITest and maintain CI workflows.

Skills

Swift/iOS development

UIKit MVVM

REST API integration

Unit/Integration testing

CI/CD with GitHub Actions/CircleCI

Objective-C legacy code

Code reviews

Team collaboration

Education

Bachelor's degree in Computer Science or related

Tools

Tuist

xcodebuild

GitHub Actions

CircleCI

Job description

We are seeking a skilled iOS Developer to design, develop, test, and enhance mobile applications used by a large global user base. The ideal candidate will have strong technical expertise in iOS development, a passion for user experience and clean code, and the ability to solve complex problems in a fast-paced, collaborative environment. The developer will work closely with designers, product owners, QA engineers, and other developers to deliver high-quality mobile experiences while contributing ideas and solutions to open-ended technical challenges.

Key Responsibilities

• Design, develop, maintain, and enhance iOS applications using modern development practices.

• Write clean, maintainable, and testable code while continuously improving existing codebases.

• Develop and implement mobile features in collaboration with designers, product owners, QA, and engineering teams.

• Analyze and resolve application defects, performance issues, and production bugs.

• Perform performance analysis and optimization to improve application responsiveness and reliability.

• Work with both modern Swift code and legacy Objective-C components.

• Develop and maintain unit and integration tests using XCTest and XCUITest.

• Build and maintain continuous integration workflows using tools such as GitHub Actions and CircleCI.

• Work with build and project management tools such as Tuist and xcodebuild.

• Integrate iOS applications with REST APIs and backend services.

• Contribute to functional programming patterns, MVVM architecture, and reusable application components.

• Design solutions for ambiguous and open-ended technical problems and rapidly iterate on potential solutions.

• Participate in code reviews and contribute to engineering standards and best practices.

• Collaborate effectively with globally distributed engineering teams.

• Contribute to open-source initiatives and continuously evaluate modern iOS technologies and development practices.

Required Qualifications

• Professional experience developing and maintaining iOS applications.

• Strong hands-on experience with Swift and iOS development frameworks.

• Experience with UIKit and modern iOS application architecture, including MVVM.

• Experience integrating mobile applications with REST APIs and backend services.

• Experience with unit and integration testing using XCTest and/or XCUITest.

• Experience troubleshooting bugs and optimizing application performance.

• Experience working with Objective-C legacy codebases.

• Experience with continuous integration and build automation.

• Experience with GitHub Actions, CircleCI, Tuist, xcodebuild, or similar development and build tools.

• Strong understanding of software development methodologies and functional coding patterns.

• Ability to work independently, manage time effectively, and take ownership of technical deliverables.

• Strong problem-solving, communication, and collaboration skills.

• Bachelor’s degree in Computer Science or a related field, or equivalent professional experience.

Preferred Qualifications

• Experience working with large-scale consumer-facing mobile applications.

• Experience with globally distributed engineering teams.

• Experience with RAML API documentation.

• Familiarity with µFeatures architecture or similar modular application architectures.

• Experience with Danger or similar automated code review and quality tools.

• Contributions to open-source projects.

• Experience working with custom or legacy backend services.

Certifications

• Relevant iOS, Swift, mobile development, or cloud certifications are a plus.