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Wallapop Tech Stack

Mobile-first secondhand marketplace for Spain, Italy, and Portugal

Technology, Information and Internet Barcelona 201–500 employees Founded 2013 Privately Held

Wallapop operates a classifieds platform built on iOS-native architecture (Swift, RxSwift, UIKit) with a growing backend infrastructure (Kafka, Kubernetes, AWS SageMaker). The tech adoption pattern—moving from UIKit to SwiftUI and scaling ML capabilities via Vertex AI and Flyte—reflects a shift toward modernizing a legacy codebase while building AI-driven features. Hiring velocity is accelerating with product and sales roles dominating, suggesting a pivot toward marketplace dynamics (dealership acquisition, checkout optimization) and sales process formalization rather than pure platform engineering.

Tech Stack 21 technologies

Core StackSwift Greenhouse AWS SageMaker AWS Lambda Kubernetes Python Kafka Vertex AI MLflow iOS RxSwift UIKit Realm CoreData LinkedIn Recruiter Git OpenSearch Flyte Google Shopping

AdoptingSwiftUI

What Wallapop Is Building

◆Challenges

Market leadership position
Expanding dealership network
Legacy codebase modernization
Reducing transaction drop-offs
Optimizing payment costs
Strengthening leadership position
Increasing market penetration
Legacy codebase challenges
Scaling ml platform
Improving funnel conversion

▲Active Projects

Market penetration through dealership acquisition
Sales process definition
Swiftui adoption
Modern architecture and tooling
Employer branding initiatives
Internal people projects
End-to-end checkout experience
Payment infrastructure
Wallet adoption
Defining sales process and structure

Hiring Activity

Accelerating10 roles · 5 in 30d

Department

Product

3

Sales

3

Engineering

2

Data

1

HR

1

Seniority

Mid

5

Senior

4

Intern

1

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About Wallapop

Wallapop is a secondhand goods marketplace serving 19 million monthly users across Spain, Italy, and Portugal. The platform facilitates over 100 million listings annually and is particularly established in motor vehicle sales. Founded in Barcelona in 2013, the company operates as a peer-to-peer and dealer-facing marketplace, with active projects around dealership network expansion, payment infrastructure, and funnel optimization. Current challenges center on scaling transaction volume, modernizing an aging mobile codebase, and optimizing payment economics while maintaining market leadership in competitive markets.

HeadquartersBarcelona

Company Size201–500 employees

Founded2013

Hiring MarketsSpain

Frequently Asked Questions

What is Wallapop's tech stack?

Wallapop's primary stack includes Swift, iOS, RxSwift, UIKit, and Realm on mobile; AWS, Kubernetes, Kafka, and OpenSearch on backend; and SageMaker, Vertex AI, Flyte, and MLflow for ML workloads. SwiftUI adoption is underway.