# Nubank We make the extraordinary happen This is one page of public article previews, not the complete archive. Follow Next page to continue. Summaries are not the original full articles. ## When the team plays, Pix pauses: what the World Cup teaches us about outliers DevFeed: [When the team plays, Pix pauses: what the World Cup teaches us about outliers]() Original publisher: [Read original article]() Author: Nubank Editorial Published: 2026-09-17T15:17:19Z Content type: article Language: en Sources: [Nubank]() Topics: [data](), [context](), [Transactions](), [Risk](), [reliability]() Tags: [ai-research](), [context](), [data](), [data-science-machine-learning](), [patterns](), [payment](), [transactions]() ### AI overview The article uses World Cup matches as an example of how coordinated changes in everyday behavior can create outliers in payment data. It explains that instant-transfer volume drops during a match, returns after the final whistle, and may show a halftime pattern, emphasizing that anomalies must be assessed against the normal rhythm of transactions and their context. ### Source excerpt How World Cup matches turn everyday payment patterns into outliers and what those anomalies can teach us about data, risk, and reliability The post When the team plays, Pix pauses: what the World Cup teaches us about outliers appeared first on Building Nubank. ## Designing Claude for ears, not eyes: An accessibility skill for blind and low-vision users DevFeed: [Designing Claude for ears, not eyes: An accessibility skill for blind and low-vision users]() Original publisher: [Read original article]() Author: Nubank Editorial Published: 2026-09-16T14:09:16Z Content type: article Language: en Sources: [Nubank]() Topics: [Accessibility](), [Claude](), [User interface design](), [screen](), [Users](), [Development]() Tags: [accessibility](), [accessible](), [claude](), [culture-values](), [data-science-machine-learning](), [development-environment](), [engineering](), [inclusive](), [life-at-nu](), [people-with-disabilities](), [text](), [users](), [vision]() ### AI overview Nubank describes BLIND-CLAUDE.md, an instruction set that adapts Claude responses for people who primarily use screen readers or read-aloud functionality. The approach treats auditory comprehension as an engineering constraint and changes behavioral instructions without modifying Claude or adding a native accessibility feature. ### Source excerpt How a cognitively diverse IT team at Nubank, they coded screen reader-friendly rules into Claude's instructions, treating auditory comprehension as an engineering constraint The post Designing Claude for ears, not eyes: An accessibility skill for blind and low-vision users appeared first on Building Nubank. ## Designing Claude for ears, not eyes: An accessibility skill for blind and low-vision users DevFeed: [Designing Claude for ears, not eyes: An accessibility skill for blind and low-vision users]() Original publisher: [Read original article]() Author: Nubank Editorial Published: 2026-09-16T14:09:16Z Content type: opinion Language: en Sources: [Nubank]() Topics: [Accessibility](), [Claude](), [Users](), [screen]() Tags: [accessibility](), [claude](), [configuration](), [culture-values](), [data-science-machine-learning](), [development-environment](), [life-at-nu](), [people-with-disabilities](), [vision]() ### AI overview Nubank describes BLIND-CLAUDE.md, an instruction set that adapts Claude responses for developers who primarily use screen readers or read-aloud tools. The approach addresses conventions such as Markdown tables, diffs, diagrams, long logs, and spatial references by adding behavioral instructions without modifying Claude or introducing a native accessibility feature. ### Source excerpt How a cognitively diverse IT team at Nubank, they coded screen reader-friendly rules into Claude's instructions, treating auditory comprehension as an engineering constraint The post Designing Claude for ears, not eyes: An accessibility skill for blind and low-vision users appeared first on Building Nubank. ## Beyond the data: what a Business Analyst does at Nubank DevFeed: [Beyond the data: what a Business Analyst does at Nubank]() Original publisher: [Read original article]() Author: Nubank Editorial Published: 2026-09-15T12:14:41Z Content type: opinion Language: en Sources: [Nubank]() Topics: [Data analysis](), [decision-making](), [dashboards](), [Tech Lead](), [User Experience](), [Finance]() Tags: [analysts](), [business-analyst](), [dashboards](), [data](), [data-analysis](), [data-analytics](), [data-science-machine-learning](), [decision-making](), [experimentation](), [meetings](), [tech-lead](), [user-experience]() ### AI overview This article explains how Business Analysts at Nubank connect data analysis, business context, and experimentation to product decisions. It describes their work in multidisciplinary squads, including investigating metrics, evaluating trade-offs, and making decisions under uncertainty. ### Source excerpt Understand how Business Analysts at Nubank use data, context, and experimentation to guide product decisions. The post Beyond the data: what a Business Analyst does at Nubank appeared first on Building Nubank. ## Beyond the data: what a Business Analyst does at Nubank DevFeed: [Beyond the data: what a Business Analyst does at Nubank]() Original publisher: [Read original article]() Author: Nubank Editorial Published: 2026-09-15T12:14:41Z Content type: opinion Language: en Sources: [Nubank]() Topics: [Data analysis](), [decision-making](), [context](), [Tech Lead]() Tags: [adoption](), [business-analyst](), [data](), [data-analysis](), [data-analytics](), [data-science-machine-learning](), [decision-making](), [manager](), [tech-lead](), [user-experience]() ### AI overview A first-person account of the Business Analyst role at Nubank, describing how BAs connect data analysis, context, and experimentation to product and business decisions. The article emphasizes clarifying trade-offs, investigating metrics, and collaborating with product and technical roles. ### Source excerpt Understand how Business Analysts at Nubank use data, context, and experimentation to guide product decisions. The post Beyond the data: what a Business Analyst does at Nubank appeared first on Building Nubank. ## From AI demos to real work: How Engineering and Operations learn side by side DevFeed: [From AI demos to real work: How Engineering and Operations learn side by side]() Original publisher: [Read original article]() Author: Nubank Editorial Published: 2026-09-14T16:28:23Z Content type: article Language: en Sources: [Nubank]() Topics: [Artificial Intelligence](), [Generative AI](), [AI Development](), [Development](), [observability ai agents]() Tags: [agents](), [ai](), [ai-research](), [applied-ai](), [data-science-machine-learning](), [development](), [enablement](), [technical]() ### AI overview Nubank's Ops AI Acceleration Program uses workshops to connect technical AI knowledge with operational expertise. A workshop with PJ Operations introduced generative AI, agents, and the building blocks of AI systems before applying that shared understanding to a real operational challenge. ### Source excerpt Building shared technical understanding so operational expertise can turn AI into practical improvements The post From AI demos to real work: How Engineering and Operations learn side by side appeared first on Building Nubank. ## From AI demos to real work: How Engineering and Operations learn side by side DevFeed: [From AI demos to real work: How Engineering and Operations learn side by side]() Original publisher: [Read original article]() Author: Nubank Editorial Published: 2026-09-14T16:28:23Z Content type: article Language: en Sources: [Nubank]() Topics: [Artificial Intelligence](), [Generative AI](), [AI Development](), [Software Engineering](), [Development]() Tags: [agents](), [ai](), [ai-research](), [applied-ai](), [data-science-machine-learning](), [development](), [engineering](), [mcps]() ### AI overview This article describes Nubank's Ops AI Acceleration Program and an applied AI workshop with PJ Operations. The workshop combined foundational technical concepts about generative AI, agents, models, tools, context, skills, and MCPs with a real operational challenge to connect engineering knowledge with operational expertise. ### Source excerpt Building shared technical understanding so operational expertise can turn AI into practical improvements The post From AI demos to real work: How Engineering and Operations learn side by side appeared first on Building Nubank. ## Clojure/Conj 2026 Will Offer Free Online Streaming to Broaden Access DevFeed: [Clojure/Conj 2026 Will Offer Free Online Streaming to Broaden Access]() Original publisher: [Read original article]() Author: Nubank Editorial Published: 2026-09-11T17:39:44Z Content type: opinion Language: en Sources: [Nubank]() Topics: [Clojure](), [Functional programming](), [coding-community]() Tags: [analytics-engineering](), [clojure](), [data-science-machine-learning](), [developer-community](), [free](), [technical]() ### AI overview This commentary explains how free online streaming for Clojure/Conj 2026 can make technical discussions accessible to developers who cannot travel or afford in-person attendance. The conference will take place from September 30 to October 2 in Charlotte, North Carolina. ### Source excerpt Making technical knowledge more accessible strengthens the entire developer community The post Why this year's Clojure/Conj matters beyond the conference appeared first on Building Nubank. ## Clojure/Conj 2026 Will Offer Free Online Streaming to Expand Access DevFeed: [Clojure/Conj 2026 Will Offer Free Online Streaming to Expand Access]() Original publisher: [Read original article]() Author: Nubank Editorial Published: 2026-09-11T17:39:44Z Content type: opinion Language: en Sources: [Nubank]() Topics: [Clojure](), [coding-community](), [Functional programming]() Tags: [analytics-engineering](), [clojure](), [conference](), [data-science-machine-learning](), [developer-community](), [engineering](), [events](), [free]() ### AI overview This editorial explains that Clojure/Conj 2026 will be held from September 30 to October 2 in Charlotte, North Carolina, with free online streaming. It argues that online access can broaden participation by reducing travel and accommodation barriers while preserving live interaction with the event. ### Source excerpt Making technical knowledge more accessible strengthens the entire developer community The post Why this year's Clojure/Conj matters beyond the conference appeared first on Building Nubank. ## NFR Brain: challenging the status quo of risk management with data DevFeed: [NFR Brain: challenging the status quo of risk management with data]() Original publisher: [Read original article]() Author: Nubank Editorial Published: 2026-09-04T14:18:41Z Content type: opinion Language: en Sources: [Nubank]() Topics: [risk-management](), [data](), [Risk](), [Resilience]() Tags: [critical](), [data](), [data-analytics](), [data-modelling](), [data-science-machine-learning](), [governance](), [models](), [risk-management]() ### AI overview Nubank describes NFR Brain, a platform for combining data, modelling, and expert judgement to make non-financial risk signals comparable and actionable. The article presents it as a way to support more consistent, transparent risk prioritization in business decisions without automating judgement. ### Source excerpt Author : Mayara Zenati At Nubank, we believe the most meaningful problems for customers and for the business rarely come with ready-made answers. That is why we challenge the status quo: not to innovate for innovation's sake, but to remove complexity and build solutions that make important decisions simpler, faster and better. This mindset also [...] The post NFR Brain: challenging the status quo of risk management with data appeared first on Building Nubank. ## NFR Brain: challenging the status quo of risk management with data DevFeed: [NFR Brain: challenging the status quo of risk management with data]() Original publisher: [Read original article]() Author: Nubank Editorial Published: 2026-09-04T14:18:41Z Content type: article Language: en Sources: [Nubank]() Topics: [risk-management](), [data](), [Resilience](), [incident]() Tags: [business](), [complexity](), [data](), [data-analytics](), [data-science-machine-learning](), [management](), [resilience](), [risk](), [risk-management](), [service]() ### AI overview Nubank is building NFR Brain, a platform that combines data, modelling and expert judgement to create a comparable and actionable view of non-financial risk. The article explains how the platform is intended to support clearer, more consistent prioritization across operational failures, customer complaints, third-party dependencies and other risk signals. ### Source excerpt Author : Mayara Zenati At Nubank, we believe the most meaningful problems for customers and for the business rarely come with ready-made answers. That is why we challenge the status quo: not to innovate for innovation's sake, but to remove complexity and build solutions that make important decisions simpler, faster and better. This mindset also [...] The post NFR Brain: challenging the status quo of risk management with data appeared first on Building Nubank. ## How we built a benchmarking framework to horizontally accelerate transaction model research DevFeed: [How we built a benchmarking framework to horizontally accelerate transaction model research]() Original publisher: [Read original article]() Author: Nubank Editorial Published: 2026-09-03T13:53:30Z Content type: article Language: en Sources: [Nubank]() Topics: [benchmarking](), [Benchmark](), [Transformer](), [scaling](), [data](), [experiments]() Tags: [batch](), [benchmarking](), [data-science-machine-learning](), [distributed](), [evaluation](), [performance](), [research](), [training](), [workflow]() ### AI overview Nubank describes a benchmarking framework for horizontally evaluating transformer-based transaction representation models across more than 20 benchmarks. The automated, reproducible workflow tests data, architecture, and training changes across multiple tasks and trials, helping identify improvements that generalize. It increased the team's experimentation capacity to roughly five times more experiments per month. ### Source excerpt The framework that transformed weeks of manual experimentation into automated pipelines for horizontal transaction model research The post How we built a benchmarking framework to horizontally accelerate transaction model research appeared first on Building Nubank. ## How we built a benchmarking framework to horizontally accelerate transaction model research DevFeed: [How we built a benchmarking framework to horizontally accelerate transaction model research]() Original publisher: [Read original article]() Author: Nubank Editorial Published: 2026-09-03T13:53:30Z Content type: article Language: en Sources: [Nubank]() Topics: [benchmarking](), [Framework](), [Transformer](), [data]() Tags: [architectures](), [automated](), [benchmarking](), [data](), [data-science-machine-learning](), [experimentation](), [framework](), [model](), [performance](), [pipelines](), [training]() ### AI overview Nubank built an automated benchmarking framework for horizontally evaluating transformer-based transaction representation models across multiple downstream tasks and trials. The framework made experimentation reproducible and statistically rigorous, helping the team identify improvements that generalize across applications. It increased the team's capacity to run experiments by roughly five times per month while reducing operational overhead. ### Source excerpt The framework that transformed weeks of manual experimentation into automated pipelines for horizontal transaction model research The post How we built a benchmarking framework to horizontally accelerate transaction model research appeared first on Building Nubank. ## When AI skills become supply-chain dependencies DevFeed: [When AI skills become supply-chain dependencies]() Original publisher: [Read original article]() Author: Nubank Editorial Published: 2026-09-02T16:47:57Z Content type: article Language: en Sources: [Nubank]() Topics: [Security](), [supply-chain-security](), [Application Security](), [Development](), [Software]() Tags: [ai](), [ai-research](), [developer](), [development](), [product-security](), [security](), [supply-chain]() ### AI overview Nubank describes how AI skills and related components are expanding the software supply chain. Its security team reviewed more than 2,000 AI skills before distribution and argues that security controls must evolve as AI becomes part of the developer toolchain. ### Source excerpt How Nubank vetted 2,000+ AI skills before distribution, building security into the developer workflow without turning safety into a separate gate The post When AI skills become supply-chain dependencies appeared first on Building Nubank. ## When AI skills become supply-chain dependencies DevFeed: [When AI skills become supply-chain dependencies]() Original publisher: [Read original article]() Author: Nubank Editorial Published: 2026-09-02T16:47:57Z Content type: article Language: en Sources: [Nubank]() Topics: [supply-chain-security](), [Artificial Intelligence](), [Development](), [Application Security]() Tags: [ai](), [ai-coding](), [ai-research](), [developer](), [security](), [supply-chain]() ### AI overview Nubank describes how AI skills, plugins, MCP servers, agent rules, tool manifests, prompts, and scripts are expanding the software supply chain beyond traditional code. Its security team reviewed more than 2,000 AI skills before distribution, highlighting the need for security controls that address reusable instructions and capabilities in developer workflows. ### Source excerpt How Nubank vetted 2,000+ AI skills before distribution, building security into the developer workflow without turning safety into a separate gate The post When AI skills become supply-chain dependencies appeared first on Building Nubank. ## Nubank Brazil 2027 Internship Program: developing talent for an AI-native world DevFeed: [Nubank Brazil 2027 Internship Program: developing talent for an AI-native world]() Original publisher: [Read original article]() Author: Nubank Editorial Published: 2026-08-21T16:36:36Z Content type: article Language: en Sources: [Nubank]() Topics: [AI Strategy](), [Development](), [AI Development]() Tags: [ai](), [chatgpt](), [critical-thinking](), [developing](), [internship](), [life-at-nu](), [technical]() ### AI overview Nubank describes its Brazil 2027 Internship Program, which offers approximately 50 openings and an 18-month development experience for early-career talent. The program emphasizes combining technical knowledge, critical thinking, and AI fluency. ### Source excerpt Meet Nubank's new internship program, created to develop talent that combines technical fundamentals, critical thinking and AI fluency The post Nubank Brazil 2027 Internship Program: developing talent for an AI-native world appeared first on Building Nubank. ## Nubank Brazil 2027 Internship Program: developing talent for an AI-native world DevFeed: [Nubank Brazil 2027 Internship Program: developing talent for an AI-native world]() Original publisher: [Read original article]() Author: Nubank Editorial Published: 2026-08-21T16:36:36Z Content type: release Language: en Sources: [Nubank]() Topics: [AI Strategy](), [Artificial Intelligence](), [Development]() Tags: [ai](), [chatgpt](), [claude](), [copilot](), [critical-thinking](), [developing](), [internship](), [life-at-nu](), [talent](), [technical]() ### AI overview Nubank's Brazil 2027 Internship Program is designed to develop early-career talent for an AI-first work environment. The program emphasizes AI fluency, critical thinking, evaluating AI outputs, recognizing limitations, and applying personal judgment. It offers approximately 50 openings and an 18-month development experience. ### Source excerpt Meet Nubank's new internship program, created to develop talent that combines technical fundamentals, critical thinking and AI fluency The post Nubank Brazil 2027 Internship Program: developing talent for an AI-native world appeared first on Building Nubank. ## Inside the Nu Young Apprentice Program 2026 DevFeed: [Inside the Nu Young Apprentice Program 2026]() Original publisher: [Read original article]() Author: Nubank Editorial Published: 2026-07-06T14:00:00Z Content type: article Language: en Sources: [Nubank]() Topics: [Job](), [Learning](), [Process]() Tags: [company](), [customers](), [interviews](), [job](), [learning](), [life-at-nu](), [process]() ### AI overview Nubank's 2026 Young Apprentice Program offers early-career participants opportunities to learn through real projects, collaborate with teams, and take on responsibilities. The article outlines a unified selection process involving a CodeSignal online test, a problem-solving exercise, and leadership interviews. ### Source excerpt Written by: Nubank Editorial 1. The First Step in Your Career Rarely in life does a young person get the chance to start their career at one of the fastest-growing technology companies in the world. Nubank is a dynamic place that moves fast and is always full of real challenges -- exactly the kind of [...] The post Inside the Nu Young Apprentice Program 2026 appeared first on Building Nubank. ## Inside the Nu Young Apprentice Program 2026 DevFeed: [Inside the Nu Young Apprentice Program 2026]() Original publisher: [Read original article]() Author: Nubank Editorial Published: 2026-07-06T14:00:00Z Content type: article Language: en Sources: [Nubank]() Topics: [Job](), [Tool](), [Learning]() Tags: [autonomy](), [career](), [job](), [leadership](), [learning](), [life-at-nu](), [process](), [projects](), [team]() ### AI overview Nubank Editorial describes the 2026 Young Apprentice Program, emphasizing early-career learning through real projects, responsibilities, collaboration, and support. It outlines a unified selection process involving an online CodeSignal test, a problem-solving exercise, and leadership interviews. ### Source excerpt Written by: Nubank Editorial 1. The First Step in Your Career Rarely in life does a young person get the chance to start their career at one of the fastest-growing technology companies in the world. Nubank is a dynamic place that moves fast and is always full of real challenges -- exactly the kind of [...] The post Inside the Nu Young Apprentice Program 2026 appeared first on Building Nubank. ## How Nubank uses causality, machine learning and Python to support credit limit increase decisions DevFeed: [How Nubank uses causality, machine learning and Python to support credit limit increase decisions]() Original publisher: [Read original article]() Author: Nubank Editorial Published: 2026-07-01T16:16:31Z Content type: article Language: en Sources: [Nubank]() Topics: [Data Science](), [Machine Learning & Artificial Intelligence](), [Python](), [risk-management](), [Monitoring](), [Optimization]() Tags: [causality](), [data-science](), [life-at-nu](), [machine-learning](), [monitoring](), [optimization](), [python](), [risk](), [scalability]() ### AI overview A high-level technical overview of how Nubank applies data science, predictive modeling, causality, optimization, and monitoring to support credit limit increase decisions. It discusses balancing customer experience, risk management, operational sustainability, interpretability, computational cost, and scalability. ### Source excerpt A technical, high-level view of how data science helps build more responsible and scalable credit decisions The post How Nubank uses causality, machine learning and Python to support credit limit increase decisions appeared first on Building Nubank.