Sr Site Reliability Engineer

The Trade Desk is a global technology company and the world’s leading independent platform for digital advertising, with nearly 4,000 employees across more than 30 offices. Our technology helps advertisers reach the right audiences across the open internet — from streaming TV and podcasts to mobile apps, news, and more. Advertising powers the content people love.

By making it more transparent, effective, and responsible, we help support trusted journalism, quality entertainment, and creators worldwide. The world’s brands and agencies rely on us to reach their customers and grow their businesses responsibly. The scale of our platform brings unique technical challenges — from processing massive datasets in real time to building systems that operate reliably on a global scale.

When you work here, your impact is worldwide. We welcome diverse perspectives, encourage curiosity, and build teams that learn from one another. If you’re driven to solve meaningful challenges, we’d love to meet you.

About The Team

: The Trade Desk Network Team owns end-to-end networking across one of the industry's most demanding infrastructures, spanning large-scale bare-metal datacenters and major public cloud platforms. We work at the intersection of network engineering and software development, embedding deeply with application, datacenter, and SRE teams to design and operate networks that power a global, high-performance ad tech platform. Our team takes a software-first approach to everything we build, and we actively integrate modern AI-assisted development tools like Cursor and Claude into our daily workflows.

You will be engineering the future of network automation, not just maintaining the status quo. Who are we looking for: We are looking for a Senior Software Engineer who thrives at the intersection of deep networking expertise and software craftsmanship. You will partner closely with SRE and infrastructure teams to shape strategy and build the next generation of network automation, grounded in industry best practices and a bias toward scalable, maintainable solutions.

You have an almost obsessive drive to keep networks healthy, performant, and resilient. What will you be doing: Design, build, and scale a global network platform spanning physical datacenters and multi-cloud environments across AWS, Azure, and Alibaba Cloud. Support thousands of hosts worldwide, engineering reliable and efficient solutions to petabyte-scale data challenges.

Own troubleshooting and resolution of complex network issues, upholding high availability and performance across the entire infrastructure footprint. Lead root cause analysis and postmortems, turning incidents into actionable improvements that raise the bar for operational excellence. Eliminate toil by building tools, automating workflows, and continuously improving the processes your team depends on every day.

Share responsibility for network integrity through participation in a global, follow-the-sun on-call rotation. What you bring to the table: You have 6-8 years of hands on network automation and operational experience supporting large scale production infrastructure. You have a software-first mindset with strong development and networking experience, able to think like an engineer and operate like an architect.

You bring deep expertise in TCP/IP, the OSI model, and large-scale IP networking protocols including BGP and OSPF. You have hands-on experience with Kubernetes networking technologies such as Cilium and Calico, and a solid understanding of container network interfaces (CNIs). You have managed software load balancers like NGINX Ingress, Envoy, or HAProxy in large-scale production environments.

You are skilled at troubleshooting and performance tuning in Kubernetes and Docker environments, with a focus on networking. Experience running Kubernetes clusters on bare-metal is a plus.