Mobile Engineering Manager

**About Nubank's Mobile Platform and App Core**:
The Mobile Platform's mission aligns with Nubank's commitment to delivering the best experience for our customers by ensuring a high-performing, stable, and seamless app.
Within Mobile Platform, **App Core** focuses on providing user-friendly, scalable, high-performing, and cost-efficient app infrastructure components and mobile tools that enable Nubank engineers to **quickly and safely test, deploy, monitor, analyze, and improve** app flows and features.
**The Opportunity**:
We are looking for an **Engineering Manager** to lead the App Core squad — a cross-impact engineering team responsible for building and maintaining the core mobile app infrastructure, optimizing performance, and enabling product teams to deliver high-quality mobile experiences.
This is a **strategic leadership role** requiring a strong technical foundation, excellent people management skills, and the ability to align execution with Nubank's long-term mobile strategy.
You will guide the team to **eliminate bottlenecks, improve app startup time, reduce native dependencies, and drive infrastructure modernization**, all while fostering a culture of high performance and collaboration.
**What You'll Do**:
- **Lead and Grow the AppCore Team**
Build, mentor, and inspire a high-performing team of mobile engineers, fostering technical excellence, ownership, and innovation.
- **Set Vision and Strategy**
Define and drive the AppCore roadmap in alignment with Mobile Platform's mission and Nubank's two-year engineering vision — including initiatives like achieving sub-500ms "App Ready to Use" startup times.
- **Ensure Technical Excellence**
Oversee the design, development, and maintenance of scalable app infrastructure components and tools, ensuring performance, reliability, and cost efficiency.
- **Cross-Team Collaboration**
Partner with Product Engineering squads to enable faster and safer delivery of mobile features, guiding them in best practices for mobile architecture, performance optimization, instrumentation, and observability.
- **Drive Performance Improvements**
Lead efforts to reduce app startup time, optimize critical paths, migrate core systems, and remove legacy/native dependencies.
- **Operational Leadership**
Ensure the adoption and effective use of internal mobile tools, such as monitoring (Prometheus, Honeycomb), error tracking (Sentry), and performance profiling.
- **Stakeholder Management**
Collaborate closely with leaders across engineering, product, and design to align priorities, balance trade-offs, and remove roadblocks.
**What We're Looking For**:
**Must Have**:
- Proven experience managing mobile engineering teams or senior-level technical leadership in mobile development.
- Strong technical background with **Flutter** and/or **native mobile development** (Android/iOS).
- Solid understanding of mobile software engineering principles, architectural patterns, and modularization strategies.
- Experience with performance optimization, dependency injection, and migration of core systems.
- Knowledge of mobile observability, monitoring, and debugging tools.
- Strong communication skills in English, with the ability to explain complex concepts to diverse audiences.
- Track record of delivering results in ambiguous, fast-paced environments.
**Nice to Have**:
- Familiarity with distributed systems and large-scale app architecture.
- Contributions to internal SDKs, libraries, or mobile design systems.
- Understanding of user authentication, session management, and app state handling.
- Experience leading cross-functional or cross-impact engineering initiatives.
**Why Join Us**:
- **Impact at Scale**: Help shape the mobile experience for millions of customers across multiple countries, with the goal of reaching billions.
- **Technical Leadership**: Influence the architecture and foundational technologies that all Nubank engineers rely on.
- **Innovation-Driven Culture**: Work in a dynamic, collaborative environment that values experimentation, continuous improvement, and engineering excellence.
- **Career Growth**: Develop as a strategic engineering leader, working on complex technical and organizational challenges.