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. Backed by top investors such as Accel, Insight Partners \& Naver Corp we bring our total valuation to 806 million EUR and are embarking on our international journey with the aim to become the world's best unique goods trading platform. **The Challenge** We're evolving a 10\+ year\-old codebase with over 18 iOS engineers contributing daily, balancing legacy challenges with modern architecture and tooling. Our tech stack includes: * A **custom, TCA\-inspired architecture** powered by **RxSwift** * Internal **dependency injection** system * A robust testing culture with **snapshot\-based integration tests** * Modern **UIKit** and expanding **SwiftUI** adoption * Data persistence with **Realm** and **CoreData** * Tools for **performance monitoring** and **analytics** * Testing frameworks like **Quick/Nimble** and **Snapshot Testing** **What You Will Do** You'll drive high\-quality product experiences while helping the team grow, you will: * Contribute hands\-on while being **accountable for cross\-team delivery**, ensuring initiatives are aligned with both **technical best practices** and **product goals** * Collaborate with **design, product** and **engineering leadership** to frame and deliver scalable, high\-quality solutions * Act as a **technical reference** within your tribe, supporting consistent implementation across teams * Coordinate with other platforms to ensure a **cohesive, cross\-platform experience** * Help improve our **architecture, tooling**, and **performance practices** * Mentor peers through **code reviews, pairing**, and knowledge sharing * Apply a **product\-first mindset**, balancing user value with technical excellence **What We're Looking For** * Strong hands\-on experience with **Swift** and iOS development * Ability to balance **technical trade\-offs** with **product impact** * Solid understanding of **architecture principles** and code quality standards * Experience in **collaborative, multi\-team codebases** * Familiarity with **RxSwift** or other reactive programming paradigms * Strong collaboration and communication skills * Comfortable working cross\-functionally in a fast\-evolving environment **What Would Be A Plus** * Experience with **SwiftUI** in production environments * Background in **modular architectures** * Interest in the product lifecycle and how engineering shapes the user experience 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**: * Competitive phantom shares package for all employees * Generous individual learning budget of 2k per year * 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.