# Sr Software Engineer - Backend API Platform at The Trade Desk

- Company: The Trade Desk
- What the company does: From brand building to performance marketing, our omnichannel platform was built with one goal: helping you reach yours.
- Company website: https://www.thetradedesk.com
- Type: Startups
- Level: Senior
- Location: Seattle
- Work setup: On-site
- Posted: 2026-07-30
- Apply by: 2026-10-12
- Apply: https://job-boards.greenhouse.io/thetradedesk/jobs/5198738007
- Page: https://www.1752.vc/careers/jobs/the-trade-desk-sr-software-engineer-backend-api-platform/

## About the role

You’ll be an end-to-end owner of the systems this team runs, designing, building, and operating them in production while setting the standards other Ventura teams inherit. This role sits at the intersection of API design, identity engineering, and platform work: the problem space spans OAuth and OIDC flows, device attestation, and the authorization model that scopes every request to the right partner, user, and device.

## What they're looking for

- Extensive experience designing and operating user-facing APIs in production: the kind that can scale to millions of end users, where reliability and performance are non-negotiable
- Background in identity and access management: session, device, entitlement, and multi-tenant authorization models, and the discipline required to get them right
- Track record of end-to-end ownership: significant, self-directed contributions to production services from design through operation, not just feature work
- Experience owning a shared platform that other engineering teams build on: codifying standards, running paved paths, and helping partner teams adopt them without disrupting delivery
- Strong programming skills in a modern statically typed backend language
- Solid understanding of both relational and NoSQL data stores, and how to model tenant-scoped data safely

Tags: Software Engineering