Senior Product Engineer, AI, Full-Stack

This is a fully remote position, open to applicants in Washington.

📋 Description

• Develop and enhance the chat interface and agent workspaces, incorporating streaming protocols, message/run persistence, tool-call and approval user experience, as well as citation rendering.

• Collaborate with the platform team on the application builder, generated toolchain, preview sandbox, and user experience for generation/repair loops.

• Oversee the component and design system utilized across chat, workspaces, and the application builder.

• Create the agent-facing developer experience, which includes command-line interface (CLI), deployment tools, and manifests.

• Manage the complete stack behind features: TypeScript frontend, Node/FastAPI backend-for-frontend, Postgres schema, deployment, and on-call responsibilities.

• Ensure enterprise readiness through accessibility, localization, and audit trails.

• Troubleshoot across product, backend, and platform layers utilizing backend service traces and runtime/Kubernetes logs.

⛳️ Requirements

• Over 5 years of extensive, production-level experience with React/TypeScript.

• Practical experience with a streaming protocol from start to finish (SSE or WebSocket), including the ability to debug a raw byte stream.

• True full-stack ownership experience with Node/Fastify or Python/FastAPI.

• Proficient in managing authentication, idempotency, pagination, race conditions, and migrations.

• Experience in enterprise environments with accessibility, handling empty/error states, and localization.

• Regular use of AI coding tools, driven by specifications, with examples of modifying tool outputs.

• Responsibility for instrumentation, evaluations on AI-dependent behavior, cost awareness, and on-call duties.

• Strong expertise in TypeScript (strict), React 19, TanStack Query, Vite, Node/Fastify or Python/FastAPI, Postgres/Redis, and SSE/WebSocket streaming.

• Familiarity with zod-validated wire contracts, sandboxed iframes/CSP/postMessage, Playwright/Vitest, WCAG 2.2 AA guidelines, i18n frameworks, and OIDC/OAuth2 session mechanics.

• Bachelor's Degree; a Master's Degree is an advantage.

• Must currently be authorized to work in the United States on a full-time basis.

• Required to travel twice a year for company summits.

• Completion of a written take-home assignment followed by a live two-hour technical session.

• Applicants may submit a maximum of two applications at a time; exceeding two applications within a six-month period will result in disqualification.

🏝️ Benefits

• Competitive compensation package for early-stage startup roles (based on skills, experience, and location).

• Eligibility for bonuses.

• Comprehensive health insurance with significant coverage for dependents.

• Flexible paid time off policy.

• Equity opportunities.

• Fully remote work culture.

• Participation in company summits held twice a year.