Sr Software Engineer, Frontend

About the Role Please note: this hybrid position is based in Rio de Janeiro, Brazil – welcoming both local professionals and those open to relocating. At Uber, Frontend Engineers build web experiences that power the way people move and receive things around the world. As part of our engineering team, you’ll work on large-scale applications that impact millions of users. You’ll collaborate with cross-functional partners (design, backend, data science, product). Your work will help shape the future of Uber’s Delivery, defining how people interact with Uber on the web. About the Team The Delivery team is focused on innovating and streamlining how products and services reach our customers. In this role, you'll contribute to building efficient and robust systems that support order processing, logistics, and real-time tracking. Your contributions will help optimize the end-to-end delivery experience, making it more reliable and seamless for both drivers and customers. What You’ll Do Design and implement user-facing features for critical web properties at scale, making engineering trade-offs between speed, maintainability, and user experience. Own the technical design and execution of features, from initial architecture discussions to debugging production issues. Collaborate across disciplines, Product, Design, Data Science, and Backend Engineering, to turn ambiguous business needs into clear, scalable front-end systems. Champion front-end engineering excellence, defining and leading the adoption of code health, testing, and design standards within your project area. Improve core application performance, efficiency, and system reliability, proactively identifying and tackling areas of technical debt in software and processes within your team. Mentor junior and mid-level engineers on best practices, system design philosophy, and navigating cross-functional project dynamics. What You’ll Need 7 years of professional software engineering experience, with a focus on large-scale, high-traffic web applications. Hands-on experience and proficiency in a modern web framework such as JavaScript, React, VueJS, or Angular, plus HTML and CSS. Proficiency in fundamental algorithms and data structures, including hash tables, trees, stacks, queues, linked lists, DFS, and BFS. Demonstrated understanding of modern web application architecture and design patterns, and their implications for performance and scalability. Advanced English communication skills, written and verbal, to effectively collaborate with globally distributed cross-functional teams. Bonus Points If Experience leading the technical direction of complex, cross-functional projects with multiple dependencies. Familiarity with back-end systems (e.g., Go, Python, TypeScript) to facilitate collaboration and diagnose full-stack issues. Experience with the full project lifecycle, from idea inception and stakeholder engagement to monitoring in production. Uber's mission is to reimagine the way the world moves for the better. Here, bold ideas create real-world impact, challenges drive growth, and speed fuelds progress. What moves us, moves the world - let’s move it forward, together. Offices continue to be central to collaboration and Uber’s cultural identity. Unless formally approved to work fully remotely, Uber expects employees to spend at least half of their work time in their assigned office. For certain roles, such as those based at green-light hubs, employees are expected to be in-office for 100% of their time. Please speak with your recruiter to better understand in-office expectations for this role. Accommodations may be available based on religious and/or medical conditions, or as required by applicable law. To request an accommodation, please reach out to #J-18808-Ljbffr