Senior Software Engineer - Mqe

The Trade Desk The Trade Desk · Media · Bellevue, WA +1 · Software Engineering

The Trade Desk's Marketplace Quality Engineering team is seeking a Senior Software Engineer to work on systems that assess, measure, and optimize supply quality in the programmatic advertising ecosystem. This role involves deep technical challenges in areas like identity resolution, statistical modeling, and real-time decisioning, with a direct impact on business outcomes. The primary technology stack includes C#/.NET, Python, and SQL, with a focus on distributed systems and data-heavy backend work.

What you'd actually do

  1. Own the systems that assess, measure, and optimize supply quality across the programmatic ecosystem.
  2. Develop solutions for deduplication, supply path analysis, and quality modeling.
  3. Build tooling that turns quality signals into decisions at bid time.
  4. Solve technically deep problems including identity resolution across fragmented supply chains, statistical modeling to separate signal from noise, and real-time decisioning at platform scale.
  5. Collaborate with product, data, and platform teams across time zones.

Skills

Required

  • C# / .NET
  • distributed systems
  • data-heavy backend work
  • software development
  • engineering experience

Nice to have

  • GraphQL or REST API design
  • Apache Spark
  • Apache Airflow
  • schema-based data serialization
  • Kubernetes
  • Kafka
  • Microsoft SQL Server
  • PostgreSQL
  • Aerospike
  • Vertica
  • Redis
  • microservices
  • Python for data work or automation

What the JD emphasized

  • core strength
  • solid grasp of computer science and engineering fundamentals
  • strong experience with distributed systems and data-heavy backend work
  • proficient in C# / .NET
  • 7+ years of software development or engineering experience