Senior Mobile Engineer, iOS

Location: Colombia, Remote

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.Monks Technology Services, part of Media.Monks and S4 Capital, is a global consulting firm mastering AI-powered transformations for the Fortune 100. We combine long-term strategic thinking, deep enterprise experience, and a human-centered approach to help clients transform business processes and dominate their industries.

About the Role

As a Senior Mobile Engineer, iOS, you’ll help design, build, and maintain high-quality mobile applications that deliver reliable, performant experiences for users. You’ll collaborate with cross-functional teams to develop new features, improve app stability and usability, and contribute to technical decisions that support product goals.

Responsibilities

• Develop, test, and maintain efficient Swift-based applications for iOS devices
• Collaborate with designers, product managers, and engineers to implement and refine new features
• Support app performance, stability, and usability across a range of iOS devices and OS versions
• Participate in code reviews and help uphold code quality and engineering best practices
• Debug and resolve technical issues and bugs throughout development and testing
• Contribute to architectural discussions and support technical decision-making
• Integrate APIs, including REST and/or GraphQL services, into mobile applications
• Write and maintain unit and UI tests using XCTest or similar tools
• Support CI/CD workflows, App Store releases, and version control practices
• Stay current with the evolving iOS ecosystem and introduce relevant improvements into the codebase
• Collaborate effectively in Agile delivery cycles, including release planning, bug fixing, and feature development
• Mentor junior engineers and partner with cross-functional stakeholders to deliver quality solutions
• Other duties as assigned

About You

Qualifications & Skills

• 5+ years of relevant mobile engineering experience
• Strong proficiency in Swift for iOS development
• Solid understanding of iOS frameworks including UIKit, SwiftUI, and Core Data
• Experience with mobile architecture patterns such as MVC and MVVM; exposure to Clean Architecture is a plus
• Experience building reliable iOS applications with offline support
• Practical experience integrating APIs such as REST and/or GraphQL
• Comfort writing unit and UI tests using XCTest or similar testing tools
• Familiarity with performance debugging tools such as Instruments
• Experience with the App Store release process and CI/CD workflows
• Understanding of mobile security best practices, including sec