Senior iOS Engineer
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Senior Mobile Engineer, iOS
Location: Colombia, Remote
.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, youâll help design, build, and maintain high-quality mobile applications that deliver reliable, performant experiences for users. Youâll 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 secure storage and authentication
Experience with version control and deployment workflows
Strong communication skills and the ability to collaborate with technical and non-technical stakeholders
Ability to work independently, take ownership of assigned features, and contribute effectively in a team environment
Experience working within Agile methodologies and mentoring junior engineers
.Monks Technology Services does not discriminate on the basis of race, sex or color.
#LI-PC1
#LI-RemoteAbout Monks
Monks is the global, digital-first, data-driven, unitary operating brand of S4 Capital plc. With a legacy of innovation and specialized expertise, Monks combines an extraordinary range of global Marketing and Technology Services to redefine how brands interact with the world. Through Monks.Flow, its flagship AI ecosystem for marketing orchestration, Monks transforms marketing into a growth engine, collapsing timelines and connecting brands to culture in real time. By deploying bespoke intelligent agents across disciplines and delivering culturally relevant, high-impact creative and digital solutions, Monks solves key critical business challenges across the entire brand enterprise to help brands sustain long-term impact.
Monks was named a Contender in The Forrester Waveâ˘: Global Marketing Services, ranks among Cannes Lions' Top 10 Creative Companies (2022-25) and remains the only partner featured in AdExchangerâs Programmatic Power Players list every year (2020-24). Named Adweekâs first AI Agency of the Year (2023) and The One Showâs inaugural AI Pioneer Organization, Monks was also awarded Business Intelligence Groupâs 2025 Excellence in Artificial Intelligence Award in both the Organizational and AI Product categories. As a trusted partner to cutting-edge innovators in tech, Monks earned titles such as Optimizely Experimentation Partner of the Year (2025), runner-up for the Adobe Firefly Partner Award (2024), and Workatoâs AI Visionary Customer Impact Award (2024). Additionally, Monks achieved a record-breaking number of FWAs and continues to hold the most of any partner.
We are an equal-opportunity employer committed to building a respectful and empowering work environment for all people to freely express themselves amongst colleagues who embrace diversity in all respects. Including fresh voices and unique points of view in all aspects of our business not only creates an environment where we can all grow and thrive but also increases our potential to produce work that better representsâand resonates withâthe world around us.
Apply Now
Senior Mobile Engineer, iOS
Location: Colombia, Remote
.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, youâll help design, build, and maintain high-quality mobile applications that deliver reliable, performant experiences for users. Youâll 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 secure storage and authentication
Experience with version control and deployment workflows
Strong communication skills and the ability to collaborate with technical and non-technical stakeholders
Ability to work independently, take ownership of assigned features, and contribute effectively in a team environment
Experience working within Agile methodologies and mentoring junior engineers
.Monks Technology Services does not discriminate on the basis of race, sex or color.
#LI-PC1
#LI-RemoteAbout Monks
Monks is the global, digital-first, data-driven, unitary operating brand of S4 Capital plc. With a legacy of innovation and specialized expertise, Monks combines an extraordinary range of global Marketing and Technology Services to redefine how brands interact with the world. Through Monks.Flow, its flagship AI ecosystem for marketing orchestration, Monks transforms marketing into a growth engine, collapsing timelines and connecting brands to culture in real time. By deploying bespoke intelligent agents across disciplines and delivering culturally relevant, high-impact creative and digital solutions, Monks solves key critical business challenges across the entire brand enterprise to help brands sustain long-term impact.
Monks was named a Contender in The Forrester Waveâ˘: Global Marketing Services, ranks among Cannes Lions' Top 10 Creative Companies (2022-25) and remains the only partner featured in AdExchangerâs Programmatic Power Players list every year (2020-24). Named Adweekâs first AI Agency of the Year (2023) and The One Showâs inaugural AI Pioneer Organization, Monks was also awarded Business Intelligence Groupâs 2025 Excellence in Artificial Intelligence Award in both the Organizational and AI Product categories. As a trusted partner to cutting-edge innovators in tech, Monks earned titles such as Optimizely Experimentation Partner of the Year (2025), runner-up for the Adobe Firefly Partner Award (2024), and Workatoâs AI Visionary Customer Impact Award (2024). Additionally, Monks achieved a record-breaking number of FWAs and continues to hold the most of any partner.
We are an equal-opportunity employer committed to building a respectful and empowering work environment for all people to freely express themselves amongst colleagues who embrace diversity in all respects. Including fresh voices and unique points of view in all aspects of our business not only creates an environment where we can all grow and thrive but also increases our potential to produce work that better representsâand resonates withâthe world around us.
Apply Now