Lead Senior Software Engineer - Decisioning Workflows Team

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 we do: The team is responsible for driving recommendations and insights across the platform. The team has delivered key forecast metrics such as Forecasted Spend, Decision Power, and Relevance. Users not only want to view forecast metrics, they also require actionable recommendations and insights. To achieve this goal, the team is composed of data scientists, backend engineers, and frontend engineers. The team collaborates closely with users of the platform. Day to day, the team solves problems at the intersection of data science, scalable systems, and product design. Some of the technologies it uses are C#, Python, Databricks, SQL Server, and agentic programming. You will participate actively in all aspects of designing, building, and delivering products for our clients. Develop with a variety of platforms and technologies, such Docker, Kubernetes, Gitlab, AWS, Azure, Aliyun, .NET Core, Java, Scala, SQL Server, GraphQL. Participate in design reviews and proof of concepts. Contribute to solution design in line with our overall technical roadmap and industry best practices. We have dozens of individual, mission-focused teams working across a wide spectrum of technological challenges. You will have the opportunity, depending on your interests and aptitude, to work on large-scale distributed systems coordinating thousands of servers in cloud and physical data centers around the world, petabyte-scale data challenges, machine learning, advanced visualizations, and interactive user interfaces – to name a few. What you'll do to help us deliver on our mission: Commercial development skills in OO programming (C#, Java or C++) and design Cloud-based platform experience (AWS, Azure or Aliyun) Excellent understanding of Agile development methodology and development practices Experience in Agile Scrum tools (such as Jira) Understanding of designing web-based, service-oriented applications and integrated back-office systems Experience in distributed source control system (such as Git) We are a global team with different backgrounds, experiences, and perspectives. To complement this team, you will welcome ideas that are different from your own, and work to build from common ground—valuing and fostering both visible and invisible dimensions of diversity. Who we’re looking for: You have a sustained track record of making significant, self-directed, and end-to-end contributions to large and impactful software projects. You think beyond just the task at hand to deeply understand the 'why' behind what you are doing. You understand engineering fundamentals. At our scale, many off-the-shelf techniques and existing technologies (open source and enterprise) simply don't work. You are able to work from first principles to evaluate solutions and adapt them to a unique You are a broadly skilled Technical Lead accustomed to developing web services. You have experience building always-on systems, working across a variety of technologies and service layers. You have a…