Product Engineer

About the role As a founding product engineer at Hyperspell, your mission is to build the product surface area that makes agent memory useful, trustworthy, and easy for developers to adopt. This is not a customer implementation role. You will talk to customers, learn from them, and build with strong user empathy, but your job is to turn those patterns into reusable product. You’ll work across the stack, with a heavy emphasis on backend systems, AI workflows, developer experience, integrations, APIs, SDKs, evals, and internal tooling. We have a product that works, customers using it, and a category that is getting competitive quickly. The next phase is about shipping a lot of zero-to-one product, making the system work at greater scale, and building the primitives developers need to bring memory and context into their own AI workflows. You’ll work on things like Developer experience and SDKs Build the APIs, SDKs, docs, examples, and integration flows that make it easy for developers to connect their applications to Hyperspell. We want integration to feel obvious, fast, and surprisingly powerful. Agent memory primitives Help build the product layer around context, memory, retrieval, freshness, and relevance. This may include systems for episodic memory, procedural memory, context generation, query expansion, and agent-ready summaries. Integrations and data pipelines Build and improve integrations across tools like Slack, Gmail, Notion, Drive, Linear, and other sources of company knowledge. Make messy data reliable, useful, and available to agents. Product discovery through customer proximity Talk to developers using Hyperspell, understand where they get stuck, and turn repeated pain into product improvements. The goal is not bespoke consulting. The goal is to build product that makes the next integration easier than the last one. Zero-to-one product development Take ambiguous product ideas from “we should probably have this” to something shipped, used, and improved. In a company this small, you’ll touch almost everything. Requirements 3+ years of experience building product as a backend, full-stack, product, AI, or developer tools engineer Fluency in Python and TypeScript Strong backend engineering ability Experience or strong interest in AI agents, LLM systems, retrieval, memory, context engineering, or developer tools Strong product judgment and a bias toward shipping Clear communication and good user empathy Genuine enjoyment of building tools that help other developers succeed Ability to work on location in San Francisco Compensation $150k-$220k base salary 0.5%-1.5% equity $10,000 to build your dream work setup Health, dental, and vision coverage and generous health benefits #J-18808-Ljbffr