Senior iOS Engineer

Senior iOS Engineer Miejsce pracy: WarszawaTechnologies we useExpectediOSSwiftObjective-CSwiftUIUIKitGitHubAbout the projectYou’ll join the Sell Online Tribe, the group shaping how merchants bring their businesses to life online. We design and build tools that help millions of entrepreneurs, from barbers to bakers, sell their products and services anywhere. Our focus is on Online Store and Bookings, two products at the heart of SumUp’s ecosystem. Together, they give merchants the power to manage appointments, showcase their offerings, and get paid—all from their phones.We’re a cross-functional team of Product Managers, Designers, and Engineers who move fast, collaborate openly, and care deeply about crafting beautiful mobile experiences. As part of this team, you’ll help us expand into new verticals, close the gap between web and mobile, and make digital selling effortless for small businesses everywhere.Your responsibilitiesImplement new features with clean, maintainable, and testable code using Swift and SwiftUICollaborate closely with designers and product managers to review and improve user flowsContribute to closing feature gaps and achieving parity between web and mobileParticipate in code reviews and improve application performance and stabilitySupport multiple squads as needed and contribute to shared technical foundations across Sell OnlineOur requirementsYou have 5+ years of experience in iOS developmentYou’re fluent in Swift and Objective-C, and comfortable building complex UI using SwiftUI and UIKitYou understand Combine, MVVM-C and Dependency Injection, and have solid experience with RESTful APIsYou’re experienced with CI/CD, GitHub Actions, and dependency management using CocoaPods and Swift Package ManagerYou write unit tests and know how to ensure quality through end-to-end testingYou communicate clearly in English and thrive in a collaborative, cross-functional environmentYou care deeply about building products that empower small businesses and create real-world valueThis is how we organize our workThis is how we workin houseyou have influence on the productyou focus on product developmentagileThis is how we work on a projectcode reviewDDDevent modelingContinuous DeploymentContinuous Integrationdocumentationissue tracking toolsDevelopment opportunities we offerconferences abroadconferences in Polanddevelopment budgetindustry-specific e-learning platformssoft skills trainingspace for experimentingsubstantive support from technological leaderstechnical knowledge exchange within the companytime for development of your ideasWhat we offerOpportunity to work , from our vibrant Warsaw office with inspiring art-filled lounges and a skyline terrace in the Mennica Legacy Tower.Commitment to Diversity and Inclusion: be part of a workplace that values and promotes diversity, fostering an inclusive environment where everyone's perspectives are respected and embracedEnrolment onto our VSOP program: you will own a stake in SumUp’s future successFitness support: work out on-site at our gym or explore the city using the Multisport Card, subsidised by SumUp for access to sports facilities across WarsawCommitment to well-being: access health insurance coverage for you and your family, plus life insurance to further protect your peace of mindPPK (Employee Capital Plan): grow your savings with joint contributions from SumUp and the State.Generous time off: enjoy 26 days of paid leave plus public holidays and special leave days Break4me: 1-month sabbatical after 3 years of serviceReferral Bonus: earn additional rewards by referring talented individuals to join the SumUp teamBenefitssharing the costs of sports activitiesprivate medical caresharing the costs of professional training & courseslife insuranceintegration eventscorporate libraryno dress codecoffee / teaVSOP programBreak4me: 1-month sabbatical after 3 years of serviceJob Application TipWe recognise that candidates feel they need to meet 100% of the job criteria in order to apply for a job. Please note that this is only a guide. If you don’t tick every box, it’s ok too because it means you have room to learn and develop your career at SumUp.SumUpBe empowered to do more that matters.At SumUp, we're on a mission to empower small businesses across the globe by providing a vast set of simple and affordable business tools to help them start, run, and grow their businesses. Today, over 4 million businesses in 36 markets rely on SumUp as their financial partner to manage payments, finance and customer relationships.