Senior Software Engineer

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 Open TTD team builds and owns The Trade Desk’s integration portal, a platform that connects advertisers, data providers, and inventory sellers to our DSP ecosystem. We deliver user tailored experiences across three distinct audiences: Advertisers, Providers, and Sellers, each with tailored dashboards, technical documentation, self-service tooling, and onboarding flows. Our team operates across the full stack, from the public-facing marketing landing page through authenticated management experiences, building the infrastructure that enables TTD’s external partners to discover, integrate, and operate at scale.

What you’ll do

• Design and build high-quality, scalable web experiences within the Open TTD platform, including persona-based spaces, shell architecture, and embedded application integrations.
• Contribute to backend services and APIs that power the portal, including authentication flows, access control, search, documentation authoring tools, and partner onboarding.
• Collaborate closely with product managers, UX designers, and partner engineering teams to translate complex requirements into reliable, maintainable solutions.
• Own features end-to-end: from scoping and design through implementation, testing, and production monitoring.
• Drive technical quality on the team: participate in design reviews, code reviews, and help establish patterns and practices that scale as the platform grows.
• Help evolve the technical architecture of OpenTTD to support new personas, embedded applications, and integrations with The Trade Desk’s broader platform.

Who you are

• You have strong frontend and full-stack development skills, with production experience building complex web applications- ideally large-scale portals or developer-facing platforms.
• You are comfortable working across the stack: modern React-based frontends, RESTful and GraphQL APIs, and backend services in languages such as C# or similar.
• You communicate clearly with both technical teammates and non-technical stakeholders, and you can reason about trade-offs in a way others can act on.
• You care about code quality and maintainability. You write code that is easy to understand, test, and evolve — and you raise the bar in reviews for others.
• You are energized by ambiguity. OpenTTD is a high-visibility, greenfield initiative, and you’re excited to help define what it becomes rather than waiting for full specifications
  In accordance with various US state laws, the range provided is the Trade Desk's reasonable estimate of the base compensation for this role. The actual amount may differ based on non-discriminatory factors such as experience, knowledge, skills, and location. All employees may be eligible to become The Trade Desk shareholders through eligibility for stock-based compensation grants, which are awarded to employees based on company and individual performance. The Trade Desk also offers other compensation depending on the role such as variable compensation-based incentives and commissions. Plus, expected benefits for this role include comprehensive healthcare (medical, dental, and vision) with premiums paid in full for employees and dependents, retirement benefits such as a 401k plan and company match, short and long-term disability coverage, basic life insurance, well-being benefits, reimbursement for certain tuition expenses, parental leave, sick time of 1 hour per 30 hours worked, vacation time for full-time employees up to 120 hours thru the first year and 160 hours thereafter, and around 13 paid holidays per year. Employees can also purchase The Trade Desk stock at a discount through The Trade Desk’s Employee Stock Purchase Plan.

The Trade Desk also offers a competitive benefits package. Click here to learn more.

Note: Interns are not eligible for variable incentive awards such as stock-based compensation, retirement plan, vacation, tuition reimbursement or parental leave