.Back Market is the world's leading refurbished electronics marketplace with a team of 650 people, powering operations in 21 countries (and counting!).Named one of the World's Most Innovative Companies by Fast Company in 2019 and again in 2021, our mission is simple: empowering people to consume tech sustainably by offering folks a high quality, accessible, and more eco-friendly alternative to buying new electronics. Refurbished tech helps lower our collective environmental impact. We have indeed contributed to avoid the production of more than 1,000,000 tons of CO2e worldwide since our launch in 2014.Be part of an exciting and growing international adventure that will change the way the world consumes tech.Mobile Engineering at Back MarketAt Back Market, we are strongly inspired by developing a great m-commerce app, with an optimized and advanced user experience. We want to go further than just display products as a marketplace and we have exciting ambitions and features to bring to our users in our mobile app for the upcoming years.Mobile engineers come from different cultures, backgrounds, and working environments. They are spread across Europe (Spain, France, Germany). Each squad is composed of pairs of iOS & Android engineers, working on the native language to build the best experience for our users.You will also collaborate with other product squads & stakeholders, along with the Mobile Core squad that is providing the foundations & infrastructure for your developer experience on apps. That's why we are also in favor of having mobile engineers from product squads contributing to technical & core projects from time to time.The role & responsibilitiesWe are looking for an iOS Senior Engineer to join one squad of our main tribe, Customer Journey. We have the mission in 2024 and beyond, to provide the best features, services & user experience for our app users.The engineer in this role will produce advanced app-first features, contribute to the iOS engineering excellence & innovation, and share their knowledge within the iOS Community at Back Market.The engineer will also contribute to the mobile engineering chapter, with talented iOS & Android engineers but also with other engineers from other platforms (SRE, Backend, Frontend, CyberSec, Data...). Whether hooked on Swift, developing advanced UI with motion, or purely Core architecture, the engineer will work efficiently and contribute to collaborative work by remaining open to new ideas.What you will do :Consistently delivers iOS code that sets the standard for quality and maintainability, making the iOS app scalable & accelerating product iterations.Eager to elevate the app user experience by collaborating with the Product Manager & Product Designer, and by implementing quick-wins UI animations, transitions, accessibility, and Design System components