Backend Engineer

<p>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. <span style="color: rgba(0, 0, 0, 0.9); font-family: -apple-system, system-ui, 'system-ui', 'Segoe UI', Roboto, 'Helvetica Neue', 'Fira Sans', Ubuntu, Oxygen, 'Oxygen Sans', Cantarell, 'Droid Sans', 'Apple Color Emoji', 'Segoe UI Emoji', 'Segoe UI Emoji', 'Segoe UI Symbol', 'Lucida Grande', Helvetica, Arial, sans-serif; font-size: 14px; font-style: normal; font-weight: 400; letter-spacing: normal; text-align: start; word-spacing: 0px; white-space: normal; display: inline !important; float: none;">💫</span></p> <p>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. <span style="color: rgba(0, 0, 0, 0.9); font-family: -apple-system, system-ui, 'system-ui', 'Segoe UI', Roboto, 'Helvetica Neue', 'Fira Sans', Ubuntu, Oxygen, 'Oxygen Sans', Cantarell, 'Droid Sans', 'Apple Color Emoji', 'Segoe UI Emoji', 'Segoe UI Emoji', 'Segoe UI Symbol', 'Lucida Grande', Helvetica, Arial, sans-serif; font-size: 14px; font-style: normal; font-weight: 400; letter-spacing: normal; text-align: start; word-spacing: 0px; white-space: normal; display: inline !important; float: none;">🌱 </span>Our mission is to enable a connected trade ecosystem, making 2nd-hand the norm through smart use of technology.</p> <p> </p> <p class="p1"><strong>The Challenge </strong>🧩<span class="Apple-converted-space"> </span></p> <p class="p1">Some of the interesting things we are currently doing include finding new ways to handle complexity and improve resiliency. We leverage various AWS technologies (compute, storage, etc.) to meet our objectives. At Wallapop, as a Backend Engineer, you'll have ownership of team microservices, fully embracing the DevOps philosophy. Our tech stack includes the following:</p> <ul class="ul1"> <li class="li1">Kotlin & Java</li> <li class="li1">Spring Boot & Ktor</li> <li class="li1">Kafka & RabbitMQ</li> <li class="li1">MySql, DynamoDB, Redis & RedShift</li> <li class="li1">Docker</li> <li class="li1">Solr & ElasticSearch</li> <li class="li1">AWS: S3, ECS, RDS, Lambdas, CloudWatch, MSK, SES, CloudFront & more</li> </ul> <p class="p2"> </p> <p class="p1"><strong>What You Will Do </strong>👇</p> <ul class="ul1"> <li class="li1">Write and maintain robust, scalable code in Java or Kotlin, depending on your team's specific stack.</li> <li class="li1">Develop new features using Domain-Driven Design (applying both tactical and strategic design principles).</li> <li class="li1">Modernize and refactor legacy components to ensure long-term system health.</li> <li class="li1">Champion software quality by implementing comprehensive testing strategies, contributing to a collaborative and reliable code review culture.</li> </ul> <p class="p1"> </p> <p class="p1"><strong>What