[Hiring] Senior Mobile Engineer, iOS @Monks

Role Description

As a Senior Mobile Engineer, iOS (Swift), you’ll help design, build, and maintain high-quality iOS applications that deliver reliable, performant mobile experiences. You’ll work closely with cross-functional teams to implement new features, improve app stability and usability, and support technical decisions that align with product goals and elevate the user experience.

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
• Ensure app performance, stability, and usability across a range of iOS devices and OS versions
• Participate in code reviews and contribute to high code quality and engineering best practices
• Debug and resolve technical issues and bugs during development and testing
• Stay current with the evolving iOS ecosystem and introduce relevant improvements into the codebase
• Support architectural discussions and contribute to technical decision-making
• Take ownership of assigned features and tasks while working independently and collaboratively
• Contribute to release planning, bug fixing, and feature development cycles in an Agile environment
• Mentor junior engineers and collaborate effectively with cross-functional teams and technical leads
• Other duties as assigned

Qualifications

• 5+ years of relevant mobile engineering experience, with strong focus on iOS development
• Strong proficiency in Swift for building iOS applications
• 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 apps with offline support
• Practical experience integrating APIs, including REST and/or GraphQL
• Comfort writing unit and UI tests using XCTest or similar tools
• Familiarity with performance analysis and debugging tools such as Instruments
• Experience with the App Store release process and CI/CD workflows
• Good understanding of mobile security best practices, including secure storage and authentication
• Experience with version control, deployment workflows, and release management
• Strong communication and collaboration skills with technical and non-technical stakeholders
• Experience working within Agile methodologies
• Ability to define deliverables, clarify project scope, and contribute to team planning
• Collaborative mindset with the ability to mentor junior engineers

Company Description

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.
• Monks was named a Contender in The Forrester Wave™: Global Marketing Services.
• Ranks among Cannes Lions' Top 10 Creative Companies (2022-25).
• Named Adweek’s first AI Agency of the Year (2023).
• We are an equal-opportunity employer committed to building a respectful and empowering work environment for all people.