Senior iOS Engineer

Qustodio (part of the Qoria family); Madrid; Híbrido; EUR 50.000 - 70.000; Jornada completa

Descripción de la vacante

A global leader in online safety is seeking a Senior iOS Engineer in Madrid. The ideal candidate will have over 5 years of iOS development experience, particularly in building security-focused applications. You will develop top-tier iOS applications and collaborate with cross-functional teams to enhance user security. This role offers flexible working hours and a competitive salary in a diverse environment.

Servicios

Flexible working hours

Private health insurance

In-house training and team building events

Daily catering for lunch

23 days of holidays per year

Formación

• 5+ years of experience in iOS development with security-focused applications.
• Ability to develop and integrate iOS apps with cloud services and RESTful APIs.
• Expertise in Clean Architecture and software design patterns.

Responsabilidades

• Develop security-focused iOS applications to protect users' devices.
• Own full iOS development from UI/UX to backend integration.
• Collaborate with teams to design scalable and secure mobile solutions.

Conocimientos

Swift

iOS Development

Networking

Security-focused Applications

Code Performance Optimization

CI/CD Pipelines

RESTful APIs

Documentation

Fluency in English

Educación

BSc / MSc or equivalent experience

Herramientas

Xcode

Instruments

Descripción del empleo

Founded in 2012 by cyber-security experts Eduardo Cruz, Josep Gaspar, and Josh Gabel,

Qustodio

is the global leader in online safety and digital wellbeing for families. In 2022, Qustodio became part of the

Qoria

group, protecting every child's digital journey though a world-class collaboration between schools, parents, and educators in cyber safety. Qoria’s mission is to support families and schools to live and navigate smarter in an increasingly connected world. Together, we help millions of families and educators across the globe protect children from online harm, while promoting healthy digital habits and awareness.

We are seeking a passionate

Senior iOS Engineer

, skilled in building secure and high-performance applications, to join our dynamic team. As part of our mission to enhance digital safety, you will help shape our next-generation security services for millions of users worldwide.

What you will be doing with us

• 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.

What we’re looking for

• 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.

Bonus Points

• Experience with Backend development.

What can we offer you

• 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.

At this stage we are only accepting applications from those with full working rights.

Shortlisting will commence immediately.