Senior iOS Engineer

Summary

Join Qustodio, a fast-growing internet safety startup in Barcelona, as a Senior iOS Engineer. You will develop top-tier security-focused iOS applications, tackle complex technical challenges, and own end-to-end iOS development. Collaboration with cross-functional teams is key, as is staying current with iOS trends. You will drive R&D initiatives to enhance digital safety and mobile app performance. This role requires significant iOS development experience, expertise in Swift and related frameworks, and a passion for security. Qustodio offers a great culture, flexible working hours, competitive salary, and various benefits.

Requirements

• BSc/MSc academic background or equivalent experience
• 5+ years of experience in iOS development, including building and releasing security-focused applications
• Expertise in Swift and modern iOS frameworks (SwiftUI, Combine, CoreData, CloudKit)
• Expertise in Clean Architecture and software design patterns to build scalable and maintainable apps
• Expertise in using tools to measure and optimize code performance (e.g., Instruments, Xcode Profiler)
• Passion for networking and security problems
• Familiarity with CI/CD pipelines, Fastlane, and automation tools
• Knowledge of RESTful APIs and integrating iOS apps with cloud services
• Expertise in developing various types of tests, including unit tests, functional tests, and automated tests, as required
• Ability to document technical decisions clearly, including Architectural Decision Records (ADRs) and non-technical documentation for internal and external stakeholders
• Experience for shipping our software to a high number of users
• Result oriented person with good communication skills
• Fluency in English, the company’s official language

Responsibilities

• Develop top-tier security-focused iOS applications to help users protect their mobile devices
• Tackle complex technical challenges related to network protocols, MDM integrations, and advanced iOS API interactions
• Own end-to-end iOS development across the entire stack, from UI/UX to backend integration
• Collaborate closely with cross-functional teams to design and implement scalable, maintainable, and secure mobile solutions
• Stay up-to-date with the latest iOS trends, tools, and industry best practices
• Drive R&D initiatives to push the boundaries of digital safety and mobile app performance

Preferred Qualifications

Experience with Backend development

Benefits

• Great culture - friendly and emphasizes both teamwork and fun
• Our company is home to over 18 nationalities
• Flexible working hours - and there are possibilities to work from home
• Interesting challenges in a fast-growing technology company for you to grind your skills
• Competitive salary range
• Private health insurance
• In-house training and team building events
• A modern and fully equipped office headquarters in Barcelona city center
• Daily fruit and beverages supply
• Daily catering for lunch
• 23 days of holidays per year. Half day off on your b'day
• Flexible benefits