Senior Software Engineer - Marketplace Quality Engineering

The Trade Desk The Trade Desk · Media · San Jose, CA · Software Engineering

The Trade Desk is seeking a Senior Software Engineer for their Marketplace Quality Engineering team. This role focuses on building systems to assess, measure, and optimize supply quality in programmatic advertising. The team owns systems for deduplication, supply path analysis, quality modeling, and real-time decisioning. The engineer will work with C#, Python, and SQL, and their contributions will have a direct, measurable impact on advertiser outcomes and platform economics.

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, quality modeling, and real-time decisioning.
  3. Build systems where engineering decisions translate directly into measurable business impact.
  4. Partner closely with product, data, and platform teams across time zones.
  5. Work with C# / .NET as a core strength, alongside Python and SQL where data and automation need it.

Skills

Required

  • 7+ years of software development or engineering experience
  • Strong experience with distributed systems
  • Strong experience with data-heavy backend work (services, pipelines, or both)
  • Proficient in C# / .NET
  • Solid grasp of computer science and engineering fundamentals
  • Comfortable working on an agile, distributed team across time zones and continents
  • Communicate effectively with both technical and non-technical audiences

Nice to have

  • GraphQL or REST API design
  • large-scale data processing frameworks (e.g. Apache Spark)
  • workflow orchestration tools (e.g. Apache Airflow)
  • schema-based data serialization
  • Kubernetes
  • Kafka
  • database engines (Microsoft SQL Server, PostgreSQL, Aerospike, Vertica, Redis)
  • microservices
  • Python for data work or automation
  • experience working across large codebases with multiple teams

What the JD emphasized

  • quality modeling
  • statistical modeling
  • real-time decisioning
  • model update
  • advertiser outcomes
  • platform economics

Other signals

  • quality modeling
  • statistical modeling
  • real-time decisioning
  • model update
  • advertiser outcomes
  • platform economics