Staff Software Engineer - AI Runtime

Are you excited by the challenge of building genuinely new infrastructure — where the problems aren't fully defined yet and the roadmap changes as fast as the field itself? Do you want to help figure out how AI agents discover, understand, and safely interact with real-world APIs? If so, we'd love to talk to you about joining Apollo's AI Systems team. This team owns Constellation — Apollo's control plane for AI agents. Where GraphOS gives developers a unified way to query their data, Constellation gives AI agents a way to safely discover, understand, and coordinate across APIs at the enterprise level. This is genuinely early-stage R&D: we're piloting with select enterprise customers, iterating quickly, and figuring out the right architecture as we go rather than executing against a fixed multi-quarter plan. What you'll do - Design and build systems for API discovery, schema understanding, and safe agent-to-API orchestration at enterprise scale. - Own search, ranking, relevance, or query-planning problems central to how agents find and use the right APIs and data — this is core to the role, not a peripheral concern. - Prototype quickly, evaluate multiple algorithmic approaches, and ... Click Apply to read the full job description.