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

You will join a focused Topic Team, shipping features to millions of users while contributing to a constantly evolving 10+ year-old codebase. You will need to balance rapid feature delivery with keeping our stack modern and future-proof.

What you will face:
- Modern & Pragmatic Stack: A Kotlin-first app using MVVM+UDF, Coroutines, and Clean Code principles. All new features and our Design System are built using Jetpack Compose, and we are actively migrating legacy views.
- Modularization and DI:You will navigate a project of 50+ feature modules. We use Dagger/Anvil for DI and are currently evaluating Metro to further optimize our build times and leverage its latest features.
- Quality first: We maintain 70% test coverage using practices like snapshot testing and integration tests in our daily development. Final release checks are performed by running E2E tests (via Maestro) and manual regression testing.
- Production Stability: You will use our crash and performance monitoring systems to ensure your features run smoothly for our millions of users.

What You Will Do
- You´ll drive high-quality product experiences while helping the team grow. To do so, you will:
- Build and maintain feature modules owned by your team, acting as the guardian of their quality.
- Work with a cross-functional team (Product, Design, Backend) to help define and implement new features.
Ensure initiatives are aligned with both technical best practices and product goals.- Act as a technical reference for your team and share your experience with other Android Engineers across the Tribe.
- Help improve our architecture, tooling, and performance practices.
- Mentor your 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 experience building top-tier Android apps using technologies like Kotlin, Coroutines, Anvil, and Compose.
- An excellent Computer Science foundation (data structures, algorithms, software design).
- Experience working in large modular codebases shared by multiple teams.
- A data-driven mindset with strong analytical skills.
- The ability to balance technical trade-offs with product impact.
- Strong communication skills and a growth mindset, with an openness to learning and knowledge sharing.

What Would Be A Plus (optional***)
- Experience implementing a Design System.
- Experience with the Gradle build system and CI automation.
- Contributions to open-source projects or developer communities.
- A specific passion for accessibility standards and inclusive design.

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
- Group and individual English, Catalan & Spanish lessons as part of our working day
- Private Health Insurance with Alan
- Flexible working hours + short 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)