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Staff Software Engineer (Fullstack, BE-leaning)

Scope3 · Remote (United States) · Remote

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About Scope3

About Apostra Apostra is defining a new future for advertising, for both humans and their agents. Our founders helped build the technology that shaped advertising as we know it today. Backed by GV.

About the role

We’re building the future of programmatic advertising through AI agents. Our technical team is creating the infrastructure that enables AI agents to discover, negotiate, and transact media inventory autonomously. In this role, you’ll be a technical leader responsible for the APIs, protocols, and agent interfaces that power our agentic advertising platform. You’ll design systems where AI agents are first-class participants, with their own authentication, capabilities, and communication standards.

What they're looking for

  • 8+ years building distributed backend systems at scale
  • 4+ years in a technical leadership role
  • 4+ years working professionally within the AdTech ecosystem
  • Strong expertise in API design and architecture (REST, event-driven systems, auth, versioning)
  • Experience with AI agent frameworks and communication protocols , or the ability to rapidly learn and evaluate them
  • Proficiency with TypeScript/Node.js, React, and cloud platforms (GCP or AWS)
More about this role

We’re building the future of programmatic advertising through AI agents. Our technical team is creating the infrastructure that enables AI agents to discover, negotiate, and transact media inventory autonomously.

In this role, you’ll be a technical leader responsible for the APIs, protocols, and agent interfaces that power our agentic advertising platform. You’ll design systems where AI agents are first-class participants, with their own authentication, capabilities, and communication standards.

You’ll work at the intersection of advertising technology, distributed systems, and emerging AI agent frameworks—making architectural decisions that shape how our marketplace evolves.

This is a Fullstack (80/20 backend leaning), hands-on leadership role. You’ll write production code, prototype new agent communication patterns, review system designs, and mentor engineers while setting technical direction.

  • We’re operating in a space without a fixed playbook, so this role is best suited for builders who are comfortable creating structure where none exists.
  • Our approach favors rapid experimentation over upfront perfection—we test, learn, and then formalize what works.
  • The pace is fast...

Read the full posting on Scope3's site ↗

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