Project Description

We are seeking a Senior iOS Engineer to join the team responsible for a high-traffic mobile application serving millions of users. The current iOS codebase will undergo a modernization initiative to improve architecture, performance, and development velocity. This includes modularization, establishing a unified engineering “golden path,” and migrating key components to Swift and SwiftUI.

As part of this team, you will work across a complex codebase, drive technical improvements, and support the foundation for a major rewrite planned in the next development cycle.

Responsibilities

• Work within and improve a large codebase.
• Lead efforts in modularization, architecture refinement, and modernization.
• Drive migration of certain components from Objective-C to Swift and SwiftUI.
• Reduce technical debt to enable faster feature development.
• Contribute to defining engineering best practices and the “golden path” for iOS development.
• Collaborate with cross-functional partners to deliver features while evolving core systems.
• Support long-term plans to rewrite significant portions of the app.

Skills Required

• 4+ years of experience building and maintaining iOS applications.
• Solid expertise in modern Swift development.
• Experience with SwiftUI and contemporary iOS architectural patterns.
• Proven experience working with large, complex codebases.
• Hands-on experience with code migrations, refactoring, or modernization initiatives.
• Strong problem-solving skills and the ability to navigate ambiguity.
• Proactive, initiative-driven mindset with a passion for improving engineering foundations.
• Objective-C experience is a plus.
• Valid US Visa is a plus.

Engagement Model: Direct Independent Contractor (Please read carefully)

This is an independent contractor opportunity based on a direct contractual relationship between Zoolatech and the individual service provider.

To facilitate this direct partnership, we engage with professionals who are registered and operate as a sole proprietorship, private entrepreneur, or an equivalent self-employment status in your country.

Please note, our model does not accommodate contracts through third-party intermediaries such as agencies, incubators, or umbrella companies. The essential requirement is your ability to enter into a service agreement and invoice Zoolatech directly. This is not an offer of direct employment

Please note that only candidates whose profiles closely match our requirements will be contacted.