Building the Bedrock of Nubank's Future
Nubank was built on bold technical choices: emphasizing simplicity, immutability, and state-of-the-art concurrency as the foundation for a global financial revolution. Today, as we scale to serve our customers globally and enter a new era of AI-driven engineering, we are doubling down on our commitment to foundational technical excellence
As a Library Architect, you will take ownership of the core programming language ecosystem and shared abstractions that power our backend microservices. This role will oversee, govern, and elevate Nubank's foundational infrastructure architecture
You will help define the "Nubank Way" of building resilient core software libraries and oversee how they interact across the bank's broader programming language landscape. You will ensure that our internal libraries—which support 4,000+ microservices—are stable, idiomatic, and maintained to the highest standards
Language Landscape Strategy: Define the 2–3 year technical direction for backend language adoption and core libraries at Nubank. Guide the evolution of supported languages and idiomatic patterns across the bank, driving migration away from legacy tooling and anti-patterns
Cross-Language & Ecosystem Architecture: Provide horizontal leadership across engineering teams and tech stacks. Design and evaluate cross-language library capabilities and architecture patterns to ensure seamless interoperability across the bank’s language landscape
Library Governance & Ownership: Solve core library ownership challenges by rationalizing an ecosystem of 4,000+ microservices and dependencies. Prevent uncoordinated breaking changes and establish active stewardship for shared foundational components
AI-Ready Engineering: Architect foundational libraries, abstractions, and developer workflows optimized for AI-driven development cycles and code generation tools
Open Source Stewardship: Lead Nubank’s contributions to and maintenance of critical open-source software libraries and core foundational frameworks
Strategic Leadership & Mentorship: Act as a technical counterweight to product teams to safeguard foundational stability, security, and long-term reusability. Mentor senior engineers and influence General Managers and Engineering Directors