Lead Staff Software Engineer - Partner Platform

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. What you’ll do Technical leadership Define the technical vision and architectural roadmap for The TradeDesk’s partner-facing platform Lead the design of a scalable platform spanning federated GraphQL, RESTful APIs, SDKs, modular micro-frontends, integration workflows, developer tools, and polished web experiences. Make hands-on contributions through prototypes, production code, architecture reviews, and code reviews across TypeScript/React front ends and C#/.NET GraphQL services. Establish standards for schema and API consistency, backward compatibility, authorization, security, privacy, reliability, observability, Kubernetes-based operations, and SQL data modeling. Simplify the partner journey from discovery and onboarding through testing, certification, launch, and ongoing optimization. Turn shared needs across advertisers, data providers, publishers, and sellers into reusable platform services and front-end components rather than one-off integrations. Guide cross-team decisions on schema governance, platform tooling, and architecture, balancing usability, scalability, reliability, security, privacy, and delivery speed. Execution and influence Partner with Product Management, Design, and engineering teams to shape the roadmap, technical approach, and delivery priorities. Break down ambiguous, cross-team problems into clear technical plans, milestones, dependencies, and risks. Drive alignment across teams that contribute to or consume the platform, communicating technical decisions and trade-offs clearly. Define and improve measures of platform health and partner success, including integration time, adoption, API reliability, and developer experience. Promote high standards for production of readiness, operational ownership, and continuous improvement. Engineering excellence Raise the engineering bar through thoughtful design and code reviews, technical mentorship, and practical guidance. Coach engineers in system design, debugging, delivery, and operating services in production. Lead by example as a trusted, hands-on technical partner who helps teams solve difficult problems and make durable decisions. Foster a collaborative, inclusive environment where engineers share knowledge, challenge assumptions constructively, and take ownership of outcomes. Who you are You do not need to meet every qualification below. We are interested in candidates who demonstrate most of these capabilities and can learn the rest. You have a sustained record of leading complex, high-impact software initiatives from definition through production operation. You act as a Staff-level technical authority while remaining capable of and willing to contribute directly to the codebase. You have experience leading engineers with different levels of experience and helping senior engineers and technical leads grow. You have led initiatives involving several engineering and business teams, particularly where shared platform decisions affected teams outside your immediate organi…