Senior iOS Engineer – Remote (Colombia)

About the role

Monks Technology Services is seeking a Senior iOS Engineer to design, build and maintain high‑quality mobile applications. The role is fully remote within Colombia and focuses on delivering reliable, performant experiences for a global client base.

Key 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 uphold engineering best practices.
• Debug and resolve technical issues throughout development and testing.
• Contribute to architectural discussions and technical decision‑making.
• Integrate REST and/or GraphQL APIs 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.
• Mentor junior engineers and collaborate in Agile delivery cycles.

Required profile

• 5+ years of professional mobile engineering experience.
• Strong proficiency in Swift for iOS development.
• Solid understanding of iOS frameworks such as UIKit, SwiftUI and Core Data.
• Experience with architectural patterns like MVC and MVVM; knowledge of Clean Architecture is a plus.
• Proven ability to build reliable iOS applications with offline support.

Required skills

• Swift
• UIKit
• SwiftUI
• Core Data
• MVC
• MVVM
• Clean Architecture (exposure)
• REST APIs
• GraphQL APIs
• XCTest (unit and UI testing)
• CI/CD pipelines
• Git version control