Brenno Ferrari

German neobank serving 8+ million customers. Part of the iOS platform team at one of Europe's fastest-growing fintech companies.

Two and a half years spanning two distinct roles. Started as Senior macOS Engineer, building VPN and Meshnet features for the NordVPN macOS client. Led a design system initiative that brought developers and designers closer together. Drove modularization and migration to Swift Package Manager, reshaping the project's architecture.

Promoted to Senior Swift Engineer on the Apple Low Level team — a foundational role building shared libraries consumed across macOS, iOS, tvOS, and visionOS. Worked directly with multiple product teams to ensure seamless integration and high-quality delivery. This was the role that proved platform-level thinking beyond iOS alone: writing Swift that ships on four operating systems, navigating platform-specific networking stacks, and maintaining a unified architecture across all of them.

Three years building e-commerce infrastructure in Berlin. Developed and maintained Waystation, an internal iOS/iPadOS tooling application, and created PayKit — Wayfair's payments SDK, the layer between the app and every payment processor the company supported. Collaborated with the iOS infrastructure team on SPM integration and led the modernization of Waystation with SwiftUI and Combine. The longest single tenure, and the period where the senior engineering identity solidified: owning critical-path systems, mentoring, and shipping reliably at scale.

Fitness technology platform based in Munich and Berlin. Built iPhone and iPad applications for a connected strength equipment ecosystem used in gyms across Europe. Rebuilt the iPad app from the ground up in Swift with high test coverage, introduced a design module and composable animations framework, and led the architecture transition from XIBs and Storyboards to fully programmatic views. First international role — relocated from Brazil to Germany for this position.

Concrete Solutions was one of Brazil's most respected mobile consultancies, acquired by Accenture shortly after joining. Built "Meu Cartão BV," the iOS banking app for Banco Votorantim, one of the country's major banks — fully programmatic views in Swift, custom UI components, and intricate animations for credit card transaction management. The first dedicated, single-company iOS role after years of juggling multiple positions at once.