Senior iOS Engineer, Contractor (Brazil)
Primary Responsibilities
- Design, build, and maintain customer-facing iOS applications with a focus on quality and performance
- Collaborate with Product and Design teams to define, design, and deliver new features
- Take ownership of the iOS codebase architecture, ensuring scalability, reliability, and maintainability
- Partner with backend and firmware engineers to design end-to-end solutions
- Mentor junior engineers through code reviews, pair programming, and technical guidance
- Advocate for coding standards, testability, and performance best practices within the team
- Identify and resolve complex technical issues, including debugging and performance optimization
- Stay current with iOS ecosystem trends and proactively recommend improvements
- Participate in Agile ceremonies, contributing to sprint planning, estimation, and retrospectives
- Maintain clear technical documentation for features, architecture decisions, and best practices
Requirements
- 5+ years of iOS app development experience, with a portfolio of shipped apps
- Expertise in Swift and SwiftUI, with deep knowledge of iOS SDK frameworks and Apple’s design guidelines
- Strong computer science fundamentals: data structures, algorithms, concurrency, memory management
- Proficient in REST APIs, JSON data handling, and integrating third-party SDKs
- Experience with unit/UI testing, CI/CD pipelines, and Agile development practices
- Skilled in debugging, profiling, and optimizing mobile applications
- Strong problem-solving and communication skills, able to work effectively in cross-functional teams
- Ability to rapidly prototype and iterate toward production-ready features
Bonus Skills
- Experience with iOS Bluetooth Low Energy (BLE) APIs
- Familiarity with cross-platform libraries
- Experience working with Google Firebase APIs