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iOS Engineer - Platform

iOS Engineer - Platform

Senior Hybrid Barcelona, Spain Full-time Posted 3 months ago

Skills & stack

Languages

Swift

Tools & Infra

CI/CD

Skills

Bazel RxSwift SwiftUI UIKit

About the role

Wallapop is hiring a Senior iOS Engineer for its Platform role in Barcelona, Spain, with hybrid work. You will set technical direction for an iOS codebase with around 115 modules and more than 20,000 Swift files, acting as an architect and mentor across the engineering chapter.

Work format

This is a full-time, hybrid position in Barcelona, Spain. Office attendance is required for at least 6 days per month.

Skills and tools

Swift
SwiftUI
UIKit
RxSwift
Bazel
CI/CD

What to prepare

Choose a Swift code sample and prepare to explain your implementation decisions.
Prepare a walkthrough of your work with Bazel or CI/CD, covering configuration and troubleshooting.

Responsibilities

Maintain build speed and integrity as the codebase grows.
Create developer tooling to improve engineering productivity.
Manage CI/CD pipelines and the release process.
Define and improve launch time, memory usage and crash metrics.
Own observability infrastructure using Sentry and OpenTelemetry.
Design modular architecture and lead migrations across modules.
Guide the move from RxSwift to Swift Concurrency.
Mentor iOS engineers across Wallapop's engineering teams.

Requirements

Extensive Swift development experience, including scaling iOS applications.
Experience with SwiftUI, UIKit and RxSwift is required.
A track record of working with large, modular codebases.
Mobile performance profiling expertise with Instruments is required.
Experience with Bazel and CI/CD is required.
Ability to make independent, pragmatic decisions during large migrations.
Strong communication skills and the ability to mentor engineers.

Nice to have

Scripting experience with Go, Python, Ruby or shell.

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Product

Wallapop is Spain's leading second-hand marketplace app, connecting buyers and sellers of used goods since 2013. Headquartered in Barcelona with a team spanning 26+ nationalities, its engineering org

Location: Barcelona, Spain
Team size: 501-1000
Remote policy: Hybrid

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