Yum! Digital & Technology is on a mission to revolutionize the QSR industry through Byte by YUM—our cutting-edge digital commerce platform powering iconic brands including Taco Bell, KFC, and Pizza Hut worldwide. Byte is transforming how millions of customers discover, engage with, and order from their favorite brands across web, mobile, and loyalty experiences. As a Senior Software Engineer on the Taco Bell Experience Team, you will play a hands-on role in building modern, scalable web and mobile applications that power the customer journey. Working closely with Product, UX, Platform Engineering, and Analytics teams, you will design and deliver fast, intuitive experiences across discovery, ordering, and checkout. You will balance performance, accessibility, maintainability, and engineering excellence while enabling rapid delivery to market. Design and build features for our global e-commerce platform, supporting multiple brands Build responsive, accessible, high-performance interfaces with React (and React Native where needed), TypeScript, and Vite, composing from our design system Work in a large TypeScript monorepo of shared packages and brand apps — managing package boundaries, dependency direction, and versioned releases of the shared SDK Partner with Product, Design, and back-end teams on end-to-end journeys, including market-specific work that keeps the shared core intact Instrument analytics and experiments to diagnose production issues and guide performance improvements Own features end-to-end: design, implementation, tests, code review, and deployment through CI/CD Suggest improvements to component architecture and testing practices, helping raise the team's overall standard of quality Required skills:Bachelor's in Computer Science or equivalent practical experience 6+ years in software, 3+ years hands-on with React, with a track record on large-scale, customer-facing web apps (e-commerce a plus) Strong TypeScript/React fundamentals: hooks, composition, reusable component libraries, responsive HTML/CSS, accessibility, performance optimization Experience structuring shared code across teams: package boundaries, dependency direction, type-safe APIs across packages State management experience (Redux or similar) Test-first habit with Jest and React Testing Library Daily use of AI-assisted development tools (Claude Code, Cursor) without sacrificing code review rigor Track record of mentoring engineers and driving technical decisions across teams Strong written and verbal English communication with technical and non-technical stakeholders Nice-to-have skills:Monorepo tooling (pnpm workspaces, Turborepo, Changesets) E2E testing (Playwright or Cypress) Design systems / design tokens in Storybook Redux with side-effect middleware (redux-saga) GraphQL schema-driven codegen Headless CMS (Contentful) AWS + observability (Datadog, RUM) React Native / Expo experience Experimentation/engagement platforms (Optimizely, Braze, mParticle) Why you'll will love to work here: 100% salary during probation period Annual Leave: 18 days/ year Five “Recharge Days” – Extra days, in addition to company holidays. 2 days WFH/ week Flexible Friday afternoon Full salary insurance 13th-month bonus 1 day off for birthday Advanced health insurance (Generali) Regular engagement activities: sport clubs, internal event… MacBook Working location: Waseco building, 10 Pho Quang, Tan Son Hoa ward, Ho Chi Minh city, Vietnam.