Principal Engineer Jobs in Raleigh, NC (NOW HIRING)

Job Summary:
Nubank is a fintech company focused on providing financial services through a mobile app, and they are seeking a Principal Engineer to lead the technical direction of their Mobile Platforms. This role involves shaping the architecture, developer experience, and overall performance of the Nubank app, impacting millions of customers across multiple markets.
Responsibilities:
• Lead the technical direction of Nubank’s Mobile Platform.
• Own multi‑year, high‑visibility initiatives such as Mobile Destination Architecture, native code deprecation, app startup refactor, navigation performance, BDC evolution and App Excellence.
• Shape how the entire engineering org builds mobile products across App Foundations, App Enablement and App Release.
• Drive strategy, define technical roadmaps, sponsor other senior/principal engineers, and represent Mobile Platforms in cross‑company forums and executive discussions.
• Define canonical patterns, RFCs and reference implementations; create reusable tools/libraries; and ensure that internal customers can adopt the platform with low friction and high quality.
• Align PMs, EMs, Staff/Principal engineers and leadership on trade‑offs and make tough calls grounded in data, risk and long‑term sustainability.
• Invest 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.
• Tie together app metrics (startup, TTFD, crashes, jank), CI/CD, feature rollout (BDC + app releases) and on‑call practices into a coherent strategy.
Qualifications:
Required:
• 15+ years of software engineering experience, with a proven track record of designing, building, and operating large-scale mobile applications or platforms at an enterprise level.
• Has deep expertise in mobile architecture (Flutter/Dart, native bridges, modularization, mono-repo architectures) and can design end‑to‑end solutions spanning app startup, navigation, state management, and release lifecycle.
• Understands and can evolve BDC (Backend Driven Content) as Nubank’s main server‑driven UI platform, defining how BDC, Flutter and NuDS work together to enable safe, fast iteration without depending on store releases.
• Is capable of setting the technical vision for the three Mobile Platforms business areas (App Foundations, App Enablement, App Release), connecting architecture choices with company‑level goals such as App Excellence, Magic App and Destination Architecture.
• Has a strong track record of leading large, ambiguous cross‑org initiatives – e.g., native‑to‑Flutter/BDC migrations, app startup refactors, navigation performance programs, or observability/analytics redesigns – influencing dozens of squads and multiple BUs.
• Drives platform engineering at scale: defines canonical patterns, RFCs and reference implementations; 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.
Company:
Nubank is a digital bank offering seamless financial services, including payments, credit cards, and personal loans. Founded in 2013, the company is headquartered in São Paulo, BRA, with a team of 5001-10000 employees. The company is currently Late Stage.