IOS Engineer

Overview

We’re on a mission to make money work for everyone. We’re waving goodbye to the complicated and confusing ways of traditional banking. With our hot coral cards and get‑paid‑early feature, combined with financial education on social media and our award‑winning customer service, we create magical moments for our customers.

Barcelona (ESP) | Base salary dependent on experience + stock options | Hybrid model: 3 days a week in the office

We have around 400 engineers out of roughly 4,500 people in total. Small, interdisciplinary teams. You can move between teams or specialise. You’ll work directly with anyone across the company and run regular knowledge‑sharing sessions.

You’ll build a product that is part of day‑to‑day life for more than 11 million people. Mobile engineers at Monzo work on everything from the personal banking product to customer support tools. You’ll own an overall company goal, not a single feature, and you’ll shape how we build.

• Build polished user experiences using Swift, Swift
  
  UI and The Composable Architecture.
• Accelerate feature delivery while maintaining code quality, robust testing and monitoring.
• Collaborate with cross‑functional squads (product, design, backend, data) to ship high‑impact features.
• Own the end‑to‑end lifecycle of iOS features and platform components.
• Improve the testing strategy and maintain test coverage across unit, integration, UI and UI‑testing.

• In‑depth Swift experience and a strong product mindset.
• Experience shipping at least one app in the App Store.
• Strong collaborative and communication skills with the ability to work in an ambiguous, fast‑moving environment.
• Understanding of computer science principles.
• Experience with modern iOS architecture (MVVM, Coordinator pattern) and a testing stack (unit, integration, UI, XCUITest).
• Knowledge of networking patterns and monitoring (Alamofire, Sentry) is a plus.

Three stages:

• Initial Call
• Pair coding / take‑home task
• Final interview: system design + behavioral

• Competitive base salary + equity + stock options.
• Flexible working hours and trust‑based model.
• Learning budget of £1 000 a year for books, training courses and conferences.
• Hybrid: 3 days a week in the office (Barcelona).

We’re an equal opportunity employer. All applicants will be considered without attention to age, ethnicity, religion, sex, sexual orientation, gender identity, family or parental status, national origin, veteran status, neurodiversity or disability status.