Principal iOS Developer

About the Role

We are looking for a Principal iOS Developer to join our growing Digital & Technology team in Lisbon. In this senior individual contributor role, you will lead the architecture, development, and delivery of high-quality iOS applications. You will act as a technical authority, mentor for junior engineers, and a key partner across product, design, and engineering teams.

What You'll Do

• Architect, design, and develop robust, scalable iOS applications using Swift and SwiftUI
• Define and enforce iOS engineering best practices, coding standards, and design patterns across the team
• Lead technical discovery, feasibility assessments, and solution design for new product initiatives
• Drive the adoption of modern iOS frameworks, tools, and testing strategies
• Collaborate closely with cross-functional teams, including Product, UX, Backend, and QA
• Mentor and grow the iOS engineering team through code reviews, pair programming, and knowledge sharing
• Identify and proactively resolve performance bottlenecks, security vulnerabilities, and technical debt
• Contribute to the engineering roadmap and long-term technology strategy

What We're Looking For

Required

• 8+ years of professional iOS development experience
• Deep expertise in Swift and SwiftUI (UIKit knowledge is a plus)
• Proven track record designing and delivering complex, production-grade iOS applications
• Strong understanding of iOS architecture patterns (MVVM, Clean Architecture, TCA)
• Experience with RESTful APIs, GraphQL, and secure data handling
• Proficiency with CI/CD pipelines, automated testing (XCTest, UI Testing), and App Store deployment
• Excellent problem-solving skills and a strong sense of ownership
• Strong communication skills in English (written and spoken)

Preferred

• Experience in regulated industries
• Familiarity with accessibility standards (WCAG) and inclusive design
• Experience working in agile/scrum environments
• Knowledge of backend technologies or cloud platforms (AWS, Azure)

What We Offer

• Competitive salary and performance-based bonus
• Flexible and hybrid work model
• Comprehensive health and wellness benefits
• Learning & development budget
• International and collaborative work environment