iOS Mobile Software Engineer Intern, Back Market
Platform / Design System, 6 Month Internship
€1000 - €1,200 per month
3+ days a week in office
Online marketplace for refurbished electronics
Be an early applicant
Online marketplace for refurbished electronics
501-1000 employees
Be an early applicant
€1000 - €1,200 per month
3+ days a week in office
501-1000 employees
Company mission
To do more with what we already have.
Role
Who you are
- You are a master’s degree student studying computer science, priority to Mobile Development, specifically iOS engineering
- You have knowledge of Swift and ideally frameworks like SwiftUI and UIKit
- You have basic programming experience (github, personal, student projects, other internships)
- You have knowledge of developing new features using SwiftUI and Design Systems
- You have the ability to learn new software and technologies quickly, being curious about the coding environment you’ll evolve in
- You are detail-oriented and have the desire and ability to work in a team in an international environment
- You are fluent in English. Spanish and/or French is a plus
- You are looking for a 6 month, full-time role (35h/week), internship based in Barcelona from February/March 2026 - July/August 2026
- Your school can provide an internship agreement & you are authorized to work in Spain (EU Nationality or in possession of valid student visa/work permit)
- We know that the perfect background for a role doesn’t mean the perfect fit — we encourage you to apply for a role even if you think you may not have all the qualifications
What the job involves
- We are looking for an iOS Engineering Intern - Platform / Design System to join our Platform team within DevServices
- Your mission will be to contribute to the mobile design system that powers consistent, accessible, and delightful experiences across the Back Market iOS app
- As an intern, you'll work hands-on with the Platform and Design System team, building reusable UI components, improving developer tooling, and ensuring design consistency
- Whether you're passionate about SwiftUI, component architecture, or developer experience, you'll grow alongside talented engineers and designers
- Build and maintain reusable iOS UI components for our design system, delivering well-documented, accessible components with a quality mindset
- Develop native iOS code in Swift and SwiftUI, strengthening your foundations in component-based architecture, design tokens, theming, and modular design patterns
- Collaborate closely with designers and product engineers to translate design specs into flexible, production-ready components that enhance developer productivity and user experience
- Participate in technical design discussions for new components and design system improvements, learning to balance flexibility, consistency, and performance with guidance from experienced engineers
- Contribute to improving developer experience through clear documentation, usage examples, and tooling that make it easier for feature teams to adopt and use design system components
- Support SwiftUI adoption by building modern SwiftUI components, creating migration guides, and helping modernize legacy UIKit components where appropriate
- Help ensure component quality and consistency by writing Unit tests, snapshot tests, and visual regression tests, and maintaining automated testing infrastructure
- Learn to monitor and improve design system adoption by collaborating with feature teams, gathering feedback, understanding usage patterns, and iterating on component APIs and developer tooling
- Engage with the design systems community, staying curious through internal knowledge sharing, design system-focused content, meetups, or conferences (participation appreciated, not required)
- Duration: 6 months
- Full-time internship (35h/week - Monday to Friday)
Application process
- Interview with the Campus Tech Recruitment Manager(30min)
- Technical fit interview (live-coding/Q&A) with the tutor (45-60min)
- Team fit interview with two engineers from the team (30min)
- Starting date: February/March 2026
Our take
At a time when new smartphones launch frequently but with fewer new features and when individuals want to contribute to sustainability and the circular economy, Back Market is setting out to provide customers with a viable option of purchasing refurbished electronics goods.
The vision of the company is to become the default choice when it comes to electronics purchases, irrespective of the customers' budget. In order to materialise this vision, Back Market guarantees that all the devices sold on its platform are 100% functional. The company screens sellers before allowing them to join its platform and it monitors their performance in real-time by collecting detailed customer feedback. By doing this, it hopes to restore trust in refurbished devices and to make sustainability an easy, safe, and affordable choice.
Back Market operates in 17 counties and has a client roster that includes Netflix, Disney, BBC, Sony, and Apple. The company has also raised over $1 billion in capital, which has been invested in expansion across new and current markets. And with the recommerce market only growing, Back Market has a lot of room for exciting future growth.
Freddie
Company Specialist at Welcome to the Jungle
Insights
-4% employee growth in 12 months
Company
Company HQ
Beaubourg, Paris, France
Leadership
Thibaud Hug de Larauze
(Co-Founder & CEO)Previously a Logistic Export Assistant at Devanlay Lacoste and an Account Manager at Neteven.
Amandine Durr
(CPO)Amandine joined Back Market in 2021 as CPO. Prior to this, they were a Product Director at ManoMano, a Senior Innovation product Manager at Kering, and CPO/CEO and Head of Product at We Are TV.
Clément Petit
(CFO)Previously spent nearly 3 years at Veepee, initially joining as a Financial Director before becoming CFO of France then later Group CFO. Prior to that, they spent 4 years at Elanco in Financial roles.
Dawn Baker
(CTO)Dawn joined Back Market in 2022 as Senior VP of Engineering, becoming CTO in 2023. Prior to this, they worked at Google as a Senior Director of Engineering, at Fitbit as the VP of Software Engineering, and at LinkedIn as a Senior Manager of Site Reliability Engineering.
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