iOS Engineer - Platform

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.