PrincipalEngineer,MobilePlatforms

Principal Engineer, Mobile Platforms The Opportunity: This position is for an Engineer Principal (IC9) to join the Mobile Platforms BU. Mobile Platforms is the BU responsible for Nubank’s entire mobile foundation: we design, build, and operate the platforms that power the Nubank app across all markets. The BU is organized in three business areas – App Foundations (core architecture, app startup, developer experience), App Enablement (navigation performance, Backend Driven Content/BDC, design system infra creates reusable tools/libraries; and ensures that internal customers can adopt the platform with low friction and high quality. Is comfortable leading through influence: aligning PMs, EMs, Staff/Principal engineers and leadership on trade‑offs (performance vs. flexibility, platform vs. product), and making tough calls grounded in data, risk and long‑term sustainability. Invests heavily in technical leadership and mentorship, raising the bar for senior engineers across Mobile Platforms and product BUs, and building a strong culture around architecture reviews, design docs, and post‑incident learning. Cares deeply about observability, reliability and release health for mobile: tying together app metrics (startup, TTFD, crashes, jank), CI/CD, feature rollout (BDC + app releases) and on‑call practices into a coherent strategy. Is motivated by working on a horizontal, high‑impact platform that directly shapes how every experience in the Nubank app is built, released and monitored, across Brazil, Mexico, Colombia and future markets. If you feel interested in these challenges and want to work on a very engaged and talented team, this is the place for you!