**About the Role** The Ad Serving Infrastructure team provides the high-performance backbone that allows Uber’s product teams to innovate rapidly with minimal operational toil. As a Senior Engineer, you will lead mission-critical initiatives to drastically reduce latency and maximize availability on the core ad serving path. You will architect foundational capabilities that unify diverse ad surfaces and complex demand constraints, directly enabling the next generation of scalable advertising products across the Uber ecosystem. **\-\-\-\- What the Candidate Will Do ----** 1. Lead the design and implementation of low-latency infrastructure, including in-memory signal caching and ad platform consolidations. 2. Drive the development of sophisticated reliability metrics (e.g., Error Free Rate) to capture system degradation and more accurately gauge ad serving health. 3. Conduct latency deep-dives and system profiling to achieve aggressive sub-20ms goals for core ad serving paths. 4. Collaborate with product and delivery teams to build reusable abstractions that minimize toil and accelerate engineering velocity. 5. Champion operational excellence by performing DR audits and documenting risks to ensure long-term platform resilience. **\-\-\-\- Basic Qualifications ----** 1. Expertise in Java, Go, or C++ with a deep understanding of concurrent programming and high-performance backend system design. 2. Proven experience architecting and maintaining large-scale distributed systems where high availability (99.99%) and ultra-low latency are primary requirements. 3. Demonstrated ability to perform performance profiling and deep-dives into complex systems to identify and mitigate latency hotspots and bottlenecks. **\-\-\-\- Preferred Qualifications ----** 1. Prior experience in the AdTech domain, particularly with ad exchanges, bidders, or real-time auction engines. 2. Hands-on experience with real-time data technologies such as Apache Pinot and Kafka to build advanced monitoring and troubleshooting tools. 3. Experience leading Disaster Recovery (DR) audits and exercises to identify and mitigate catastrophic platform risks. 4. A background in building reusable service abstractions and frameworks that significantly improve developer velocity across multiple teams For Canada-based roles: The base salary range for this role is CAD$164,000 per year - CAD$182,000 per year. You will be eligible to participate in Uber's bonus program, and may be offered an equity award & other types of comp. You will also be eligible for various benefits. More details can be found at the following link [https://www.uber.com/careers/benefits](https://www.uber.com/careers/benefits). 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 [accommodations@uber.com](mailto:accommodations@uber.com).