Senior Software Engineer - Identity Team

The Trade Desk•Bellevue, WA

5h•Hybrid

About The Position

The Trade Desk is a global technology company and the world’s leading independent platform for digital advertising. 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 Role Our Senior Identity Engineers are end-to-end owners of the systems they build. You will design, build, and operate large-scale distributed systems and data products that process petabyte-scale data across cloud and physical infrastructure. You will collaborate closely with data scientists, platform engineers, and product teams to deliver reliable, high-performance systems that serve clients at global scale. What We Build At the core of our platform is a sophisticated identity infrastructure that powers how we understand and connect audiences at scale. We build systems that construct and maintain large-scale identity graphs — linking signals across devices, channels, and environments in a privacy-conscious way. We develop frameworks to continuously evaluate identity graph performance, measuring accuracy, coverage, and quality so our systems improve over time. This work sits at the intersection of data engineering, distributed systems, and data science/ML, and directly shapes how the open internet operates for advertisers and publishers worldwide.

Requirements

7+ years of impactful work in the Identity space or a related domain
A sustained track record of significant, self-directed, end-to-end contributions to large and impactful data engineering projects.
Experience designing and building large-scale distributed systems across cloud and physical infrastructure, including always-on services across a variety of technologies and service layers.
Hands-on experience with high-throughput pipelines processing billions of records, using technologies like Spark, ETL, or similar.
Commercial development skills in Object-Oriented programming (Java, C# and SQL) and design.
Familiarity with technologies such as Docker, Kubernetes, AWS, and web-based, service-oriented architectures.
The passion to discover what will delight clients and push one of the world's largest industries toward openness, transparency, and evidence-based decision-making.
Value, seek out, and foster diversity of backgrounds, experiences, and perspectives.
Welcome ideas that are different from your own and be skilled at finding and building from common ground.
Ability to learn quickly and find solutions to complex problems using the optimum tools for the job.
Ability to invent answers no one has thought of yet, to the questions yet to be asked.

Responsibilities

Design, build, and operate large-scale distributed systems and data products that process petabyte-scale data across cloud and physical infrastructure.
Collaborate closely with data scientists, platform engineers, and product teams to deliver reliable, high-performance systems that serve clients at global scale.
Construct and maintain large-scale identity graphs — linking signals across devices, channels, and environments in a privacy-conscious way.
Develop frameworks to continuously evaluate identity graph performance, measuring accuracy, coverage, and quality so our systems improve over time.

Benefits

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
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.