SR Swift Developer

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Location: Colombia

.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.

As a Senior Mobile Developer (iOS/Swift), you'll design, build, and optimize high-quality iOS applications that power engaging user experiences for a large-scale, consumer-facing product. You'll collaborate closely with product, design, and platform teams to deliver performant, secure, and reliable mobile features—owning key components from architecture through release for audiences across the globe.

• Develop, test, and maintain Swift-based iOS applications
• Implement and refine features in partnership with product managers, designers, and engineers
• Ensure app performance, stability, and usability across devices and iOS versions
• Participate in code reviews and uphold code quality and best practices
• Debug and resolve issues across development and testing cycles
• Continuously incorporate improvements from the evolving iOS ecosystem
• Contribute to architectural discussions and technical decisions
• Own assigned features end-to-end and collaborate effectively in an Agile environment
• Mentor junior engineers and support cross-functional delivery
• Other duties as assigned

• 5+ years of relevant iOS development experience using Swift
• Strong proficiency with UIKit, SwiftUI, and Core Data
• Experience with video streaming technologies, formats (e.g., MP4, WebM), containers, and codecs
• Knowledge of streaming protocols (HLS, DASH) and DRM providers
• Experience with architecture patterns (MVC, MVVM); Clean Architecture exposure is a plus
• Proven track record building reliable apps with offline support
• Hands-on API integration (REST and/or GraphQL)
• Testing experience with XCTest (unit and UI tests)
• Proficiency with Instruments and performance debugging
• Familiarity with App Store release process and CI/CD workflows
• Understanding of mobile security best practices (secure storage, authentication)
• Strong Agile collaboration with technical and non-technical stakeholders
• Clear, proactive communication; ability to define deliverables and scope
• Active contributor in release planning, bug fixing, and feature cycles
• Highly collaborative; mentors junior engineers and partners with cross-functional leads

.Monks Technology Services does not discriminate on the basis of race, sex, color, religion, age, national origin, marital status, disability, veteran status, genetic information, sexual orientation, gender identity or any other reason prohibited by law in provision of employment opportunities and benefits.

At .Monks Technology Services, we believe in fostering an environment where a diversity of perspectives can thrive. We proactively work to design hiring processes that promote equity and inclusion while mitigating bias. We celebrate diversity and are committed to building a team that reflects the communities we serve. We welcome and encourage qualified applicants, from all backgrounds, who are excited to contribute to our mission.

Unsure if your skills meet all of our requirements?

Apply anyway We would love to learn more about you and find out about how your skills could add value. At .Monks Technology Services we value open communication and feedback. We believe that diversity of identity, perspective, and experience makes us stronger; we would love to hear your perspective too

About Monks

Monks is the global, purely digital, unitary operating brand of S4Capital plc. With a legacy of innovation and specialized expertise, Monks combines an extraordinary range of global marketing and technology services to accelerate business possibilities and redefine how brands and businesses interact with the world. Its integration of systems and workflows delivers unfettered content production, scaled experiences, enterprise-grade technology and data science fueled by AI—managed by the industry's best and most diverse digital talent—to help the world's trailblazing companies outmaneuver and outpace their competition.

Monks was named a Contender in The Forrester Wave: Global Marketing Services. It has remained a constant presence on Adweek's Fastest Growing lists , ranks among Cannes Lions' Top 10 Creative Companies and is the only partner to have been placed in AdExchanger's Programmatic Power Players list every year In addition to being named Adweek's first AI Agency of the Year (2023), Monks has been recognized by Business Intelligence in its 2024 Excellence in Artificial Intelligence Awards program in three categories: the Individual category, Organizational Winner in AI Strategic Planning and AI Product for its service Monks.Flow. Monks has also garnered the title of Webby Production Company of the Year , won a record number of FWAs and has earned a spot on Newsweek's Top 100 Global Most Loved Workplaces 2023.

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 represents—and resonates with—the world around us.