Skip to content
HyperspellHyperspellSan Francisco, CA

Product Engineer

Builds product for AI agent memory and context layer, focusing on backend systems, developer SDKs/APIs, integrations with tools like Slack/Notion, and agent primitives. Requires 3+ years backend/fullstack experience, Python/TypeScript fluency, and strong product judgment for onsite SF role.

150k – 220k
On-site3+ YOEBackend Engineering

About the role

Responsibilities

  • Build developer experience and SDKs: APIs, SDKs, docs, examples, and integration flows.
  • Develop agent memory primitives: context, memory, retrieval, freshness, relevance systems (episodic memory, procedural memory, context generation, query expansion, agent-ready summaries).
  • Build and improve integrations and data pipelines (Slack, Gmail, Notion, Drive, Linear, other company knowledge sources).
  • Conduct product discovery through customer proximity: talk to developers, identify pain points, build reusable product improvements.
  • Lead zero-to-one product development from idea to shipped product.

Requirements

  • 3+ years experience building product as 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 bias toward shipping.
  • Clear communication and good user empathy.
  • Enjoyment of building developer tools.
  • Ability to work onsite in San Francisco.

Compensation

  • $150k-$220k base salary.
  • 0.5%-1.5% equity.
  • $10,000 dream work setup budget.
  • Health, dental, vision coverage and generous health benefits.

Skills

PythonTypeScriptAPIsSDKsAI AgentsLlm SystemsRetrievalIntegrationsBackend EngineeringData Pipelines

Similar roles

Backend Engineering jobs
Cloudflare

Software Engineer, Workers Deploy & Config

CloudflareNew York, NY +4

Build and scale the control plane for Cloudflare Workers, the serverless edge platform. Design distributed systems, high-traffic APIs, storage schemas, and own production reliability for services powering Pages and R2. Requires strong Go experience plus knowledge of observability, databases, and Kubernetes.

150k – 206k
On-site5+ YOEBackend Engineering
Doxel

Backend Software Engineer

DoxelSan Francisco, CA

Backend engineer building and scaling data pipelines, APIs, and storage systems (DuckDB, PostgreSQL, Airflow) that power construction-insight applications and integrate with CV/ML models.

150k – 200k
Hybrid3+ YOEBackend Engineering
Resend

Deliverability Engineer, Core Sending

ResendUnited States

As a Deliverability Engineer, you will be responsible for building and maintaining core components for sending transactional and marketing emails. This role requires expertise in email deliverability, reputation, and high-volume email systems.

150k – 180k
RemoteBackend Engineering
Resend

Backend Engineer , Core Sending

ResendUnited States

As a Backend Engineer on the Core Sending Squad, you will build and operate Resend’s email transport infrastructure, focusing on SMTP delivery, MTA systems, and routing. You will design systems for throttling, IP pools, and reputation-aware routing, and improve bounce classification.

150k – 170k
RemoteBackend Engineering
Kodex

Software Engineer — Integrations

KodexUnited States

Build and operate customer-facing integrations (APIs, identity federation, webhooks) connecting Kodex with third-party systems. Backend-leaning generalist with 4+ years experience in TypeScript/Node.js/React and production API experience.

150k – 180k
Remote4+ YOEBackend Engineering