Agent Infrastructure Engineer — Core Harness (Superagent)

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Description

About ImagineArt We're redefining how the world creates and designs. ImagineArt is one of the fastest-growing GenAI companies in the world. We've scaled faster than most funded startups — with zero outside funding. 100M+ social impressions Built and shipped our own image generation model, now ranked #3 globally for photo realism No funding. No shortcuts. Just a sharp, driven team building one of the strongest GenAI products in the world — and we're just getting started. We're looking for an Agent Infrastructure Engineer to own Superagent , our core agent harness that powers conversations, tool calls, and multi-step agentic workflows across our AI products. This is a deep systems and infrastructure role — not prompt engineering and not simply wrapping model APIs. You'll work on the core orchestration loop, tool-calling infrastructure, context and memory management, streaming, retries, evaluation, observability, and performance. Key Responsibilities Own the architecture, development, and evolution of Superagent , our core agent harness. Design and optimize the agent execution loop for latency, reliability, token efficiency, cost, and task completion. Build and improve core harness systems including context management, memory/state handling, tool routing, function schemas, structured outputs, retries, and error recovery . Build and maintain agent evaluation infrastructure to measure quality and guide engineering decisions with data. Integrate and benchmark multipl

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