> Markdown version of [/jobs/ext/1888144-sr-software-engineer-backend-api-platform](https://www.wearedevelopers.com/jobs/ext/1888144-sr-software-engineer-backend-api-platform). Every page supports `.md` or `Accept: text/markdown`. Links point to the HTML versions so they work for humans too. Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Sr Software Engineer - Backend API Platform - **Company:** The Trade Desk - **Location:** Seattle, WA, United States - **Experience:** Expert - **Salary:** $124,900.0 - $228,900.0 - **Contract:** Permanent contract - **Skills:** Application Programming Interfaces (APIs), Amazon Web Services, Computer Programming, Data Stores, Identity and Access Management, Node.Js, NoSQL, OpenID, Software Engineering, TypeScript, Management of Software Versions, Alwayson, Data Logging, Okta, Reliability of Systems, Backend, Event Driven Architecture, Kubernetes, Information Technology, Web Api, Smart Tv - **Published:** August 1, 2026 - **Apply:** https://diversityjobs.com/main/sendform/8/8/28176/1/17767122?backUrl=%2Fcareer%2F17767122%2FSr-Software-Engineer-Backend-Api-Platform-Washington-Seattle ## About the Role * 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. * Hands-on experience with API tooling: contract testing, versioning, and safe rollout and migration patterns across many consumers, including the backwards-compatibility discipline needed when you can't assume every consumer will upgrade on your schedule. * 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. * Deep understanding of system reliability, observability, and operational excellence: SLOs, tracing, structured logging, and on-call rigor for user-facing production services. * Track record of leading technical design and influencing architecture across teams, and mentoring engineers through code and design review. * Strong communication skills with both engineers and non-technical stakeholders, and comfort scoping and sequencing work in ambiguity. * 6+ years of software engineering experience, with meaningful time spent on backend platforms, APIs, or identity systems. We care more about what you can contribute than the level of education you have, whether that's a Bachelor's or Master's in Computer Science, a related field, or equivalent experience., * Experience building production services in Node.js and TypeScript, which much of our API surface runs on. * Strong experience running always-on services on Kubernetes and AWS at scale. * Experience with a production OIDC identity provider (Keycloak or similar). * Experience with device-attestation or public-key device-identity flows (e.g. SPIFFE, mTLS, hardware-root-of-trust patterns). * Familiarity with event-driven systems for asynchronous telemetry, audit, or ad pipelines. * Background in Smart TV, OTT, CTV, or any API layer that backs a hardware fleet or a consumer-facing OS. ## Related Videos - [Leveraging Real time data in FSIs](https://www.wearedevelopers.com/videos/806-leveraging-real-time-data-in-fsis) - [Keeping applications secure by evolving OAuth 2.0 and OpenID Connect](https://www.wearedevelopers.com/videos/100152-keeping-applications-secure-by-evolving-oauth-2-0-and-openid-connect) - [Inside Bitpanda's Tech Stack: Scaling a European Fintech Leader - Markus Dorner](https://www.wearedevelopers.com/videos/1979-inside-bitpanda-s-tech-stack-scaling-a-european-fintech-leader-markus-dorner) - [NoSQL Data Modeling for Front-end Developers](https://www.wearedevelopers.com/videos/297-nosql-data-modeling-for-front-end-developers) - [DevOps at Netflix](https://www.wearedevelopers.com/videos/270-devops-at-netflix) - [Delegating the chores of authenticating users to Keycloak](https://www.wearedevelopers.com/videos/1558-delegating-the-chores-of-authenticating-users-to-keycloak) ## Related Articles - [Highest Paying Tech Companies for Developers](https://www.wearedevelopers.com/magazine/220-highest-paying-tech-companies-for-developers) - [Is Software Engineering Over-Saturated?](https://www.wearedevelopers.com/magazine/418-is-software-engineering-over-saturated) - [Where To Find Software Engineering Jobs](https://www.wearedevelopers.com/magazine/396-where-to-find-software-engineering-jobs) - [Dev Digest 121 - AI goes offline](https://www.wearedevelopers.com/magazine/456-dev-digest-121-ai-goes-offline) - [Dev Digest 120 - Apple and peers](https://www.wearedevelopers.com/magazine/455-dev-digest-120-apple-and-peers) - [Why Attend a Developer Event in 2026?](https://www.wearedevelopers.com/magazine/688-why-attend-a-developer-event-in-2026)