Senior Staff / Principal Engineer - Digital Ecosystem

h2 strong Opportunity /strong /h2 p We are hiring a Senior Staff or Principal Engineer to support driving the technical vision and execution for Nubank’s Digital Ecosystem division, with initial focus on NuPay, Ads amp; Rewards and Insurance. This is a division‑level leadership role: you will work with exceptional engineers (including staff engineers), lead cross‑org architectural decisions, negotiate trade‑offs with product/finance/legal, and enable scalable delivery of high‑impact products (checkout amp; wallet, advertiser platform and benefits hub, and 1‑click insurance products). /p h2 strong 2026's vision and (how this role contributes) nbsp; /strong /h2 p In 2026 we will transform the Digital Ecosystem into a place where customers discover advantages, pay effortlessly and feel protected, and where merchants grow through data‑driven integrated partnerships. Our priorities are: (1) strong elevating app quality, /strong (2) strong deepening customer engagement with contextual and personalized experiences /strong , (3) strong making Nubank the preferred payments partner and growth engine for merchants /strong , and (4) strong ensuring scalable, compliant, and financially healthy foundations /strong . This role will own the technical plan to deliver that vision across strong NuPay, Ads amp; Rewards and Insurance /strong . /p h2 strong Mission design and operationalize the 2–3 year technical end‑state for the Digital Ecosystem so that: /strong /h2 ul li NuPay scales to become the de facto checkout and wallet for Nubank customers (TPV ×2 by Dec/26; wallet gt;3M MAU), /li li Ads amp; Rewards delivers the Advantages Tab, a performant advertiser platform and Ads POC with merchants, and drives material ecosystem revenue, /li li Insurance launches and scales high‑quality one‑click complements (Mobile Insurance Relaunch, Pix Protegido evolution), while maintaining aggressive SLOs, strong observability, controlled TCO and an elevated engineering culture. /li /ul h2 strong Core responsibilities /strong /h2 ul li Support defining the division’s technical end‑state (2–3 years): architecture, shard/partition strategy, migration path (one‑stack) and explicit trade‑offs (cost × latency × availability). /li li Co-own availability and performance: set SLIs/SLOs, error budgets, runbooks, incident playbooks and an observability strategy that supports merchants with strict SLAs. /li li Support Ads amp; Rewards platform design: advertiser platform (audience amp; campaign management), decision/bidding service, real‑time vs batch decisioning, measurement amp; attribution (ROAS/incrementality), and minimise impact on app UX. /li li Drive NuPay ↔ Ads integration for aspirational purchases: real‑time underwriting, multi‑source funding, take‑rate modelling, card‑on‑file / wallet flows and onboarding for flagship merchants. /li li Enable Insurance delivery: technical enablement for one‑click products, partner integration and governance (e.g., Chubb), migration to subscription/billing platform where applicable, and app quality improvements (TTFD, dashboards, NPS). /li li Support one‑stack discovery and phased migration: balance platformization with pragmatic delivery and tech‑debt management to avoid blocking growth. /li li Catalyse product quality culture: introduce and operationalize Product Quality Reviews, drive app excellence rituals, and ensure UX/technical quality are considered across the product lifecycle. /li li Mentor and grow engineering leaders and staff engineers; run RFCs, tech talks and post‑mortems; design career paths and enable managers to deliver cross‑BU initiatives. /li li Represent the division in cross‑org negotiations and external partner discussions (merchants, partners, regulators), aligning stakeholders and escalating risks proactively. /li li Track and report technical impact against business metrics and engineering health indicators. /li /ul h2 strong Key business amp; engineering metrics you will influence /strong /h2 u