iOS Engineer

Wallapop is a Barcelona based scale-up driven by the purpose to empower people to embrace a more conscious and human way of consumption. We believe in a world where collaborative economy is mainstream. This is what drives us. 💫

Wallapop operates in Spain, Italy and Portugal, offering a catalogue of several hundreds of millions of products and services. Powered by technical innovation and continuous improvement, we bring together the scale & trust of classifieds with the marketplace’s convenience & reach. 🌱 Our mission is to enable a connected trade ecosystem, making 2nd-hand the norm through smart use of technology.

The Challenge 🧩

Working on a 10+ year-old codebase used by millions, you will join a cross-functional team dedicated to creating impactful user experiences. Our core technology stack includes:

• Our own simplified, TCA-inspired architecture using RxSwift

• Custom dependency injection system

• Extensive testing infrastructure, including snapshot-based integration tests

• Modern UIKit and SwiftUI

• Performance monitoring and analytics tools

• Realm and CoreData

• Quick and Nimble

• Snapshot Testing

• Bazel-based build system

What You Will Do 👇

• Design and implement new features in alignment with our architectural guidelines.

• Collaborate with product and design teams to deliver high-quality user experiences.

• Write clean, maintainable, and testable code.

• Engage in code reviews and technical discussions to elevate team standards.

• Continuously improve our testing practices and overall code quality.

• Contribute to the evolution of our iOS architecture and development practices.

• Drive technical decisions that directly impact your team's feature development.

What We’re Looking For 🔎

• Strong experience with Swift and modern iOS development.

• A proven track record of writing clean, scalable, and maintainable code.

• Experience working in large, modular codebases within cross-functional agile teams.

• A strong product mindset with a passion for delivering excellent user experiences.

What Would Be A Plus 🚀 

• Experience with UI/UX polish, custom animations, and iOS accessibility standards.

• Solid understanding of reactive programming (RxSwift or Combine).

• Experience working on large-scale, high-traffic consumer applications.

• Familiarity with agentic engineering and AI coding assistants (e.g., Claude Code, GitHub Copilot).

Do note that all our jobs are 📍 Barcelona based. We follow a hybrid model where flexibility rules. We commit to a minimum of 6 days per month in the office. Each team self-organizes to decide on cadence and in-person/remote rituals.

Wallapop is an equal-opportunity employer. We celebrate diversity and are committed to creating an inclusive environment for all employees as we want Wallapop to be a place for everyone.

We sponsor visa processes for international candidates when applicable and provide legal & admin support along the process combined with a competitive relocation package.

Additionally to the opportunity to contribute to an agile product set up and work together towards achieving our meaningful mission, we offer the following 🍭 Perks & Benefits:

• Generous individual learning budget of 2k per year
• Free office meals, lunch selection from different providers
• Group and individual English, Catalan & Spanish lessons as part of our working day
• Private Health Insurance with Alan
• Flexible working hours + intensive Fridays
• Flexible remuneration to deduct from gross salary (kindergarten/food/transport check)
• Gym & Wellness plan, including physiotherapist in the office
• Generous referral Program & Charity Donation
• Bonus for weddings & newborns
• Wallapop Renta (Tax income support)
• Monthly plan for free shipping, bumps & home-pick-up on our services
• Work anniversary Gifts and Birthday Surprises
• Contribution towards your WIFI in your monthly payroll
• One-off payment based on compensation package to go towards setting up your home office
• Relocation package (monetary support and legal advice) and visa sponsorship, if applicable
• 26 holidays per year
• TOP hardware of your choice (latest Apple or Windows)

What does the hiring process for this position look like? 👀 **Please, note that all interviews take place remotely over hangouts.**

• Intro Call - run by Talent Acquisition, focus on providing more information about the role and the company as well as going over your experience, motivation, and expectations. This usually takes 45-60 minutes.
• Technical Task - you will be assigned a test that consists of a coding challenge to assess the technical skills required for the role. You will have up to 7 days to complete it. If you have a recent project that meets the same requirements, you can submit it instead.
• Expertise Interview - run by the core team, focusing on the hard skills and the ability to deliver in a given context. This usually takes 60-90 minutes.
• Stakeholder Interview - run by the hiring team and relevant stakeholders, focus on the ability to collaborate & deliver in a cross-functional set-up. This usually takes 60 minutes.
• Culture Interview - run by culture interviewers, focus on adherence to Wallapop's purpose and business proposition. This usually takes 60 minutes.
• Offer - should you be the right candidate, your offer will be discussed over a call with talent acquisition and will then be confirmed in writing.