Android Engineer

Reposted 5 Days Ago
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Barcelona, Cataluña
In-Office
Mid level
eCommerce • Information Technology
The Role
Join Wallapop as an Android Engineer, focusing on building and maintaining high-quality feature modules, mentoring peers, and improving architecture while balancing product goals and technical excellence.
Summary Generated by Built In

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.


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 find:

  • 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 🚀

  • 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)

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.

Top Skills

Anvil
Coroutines
Jetpack Compose
Kotlin
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The Company
HQ: Meridiana, Barcelona
439 Employees
Year Founded: 2013

What We Do

Wallapop is a Barcelona-based scale-up driven by the purpose of empowering people to embrace a more conscious and human way of consumption. We believe in a world where a collaborative economy is mainstream. This is what drives us. 💫

Wallapop operates in Spain, Italy, and Portugal, offering a catalog 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.

Backed by top investors such as Accel, Insight Partners & Naver Corp we bring our total valuation to 806 million EUR embarking on our international journey to become the world’s best unique goods trading platform.

➡️ Check more about our culture and opportunities: https://boards.eu.greenhouse.io/wallapop

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