Senior Product Engineer (AI, Full-Stack)

AZX, Seattle

The role

We are seeking a Product Engineer that owns the demo's we build for clients from the schema to the pixel, the deployment and the observability. You'll work across the chat surface and agent workspaces, the app builder alongside the platform team, and the shared component and design system, plus the agent-facing developer experience — since our platform's users are coding agents as much as humans. Enterprise readiness is a feature here, not an afterthought: accessibility, localization, and audit trails get demoed, not promised.

All jobs

Senior Product Engineer (AI, Full-Stack)

AZX, Seattle

Posted pay

$140K–$230K

a year

Compared with similar jobs

This base pay is near the median for senior software engineering jobs that are remote in the US.

Median: $185K a year
Other jobs in the group: 937

We compare the middle of each posted range. This is base pay as posted. The group does not include this job.

Location: Seattle
Work type: Remote
Level: Senior
Experience: 5+ years
Skills in the job text: Python
TypeScript
Kubernetes
React
PostgreSQL
FastAPI
Redis
Posted: Aug 31, 2026
Last check: 4 h ago
Job type: Software engineering

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AZX

Open tech jobs: 6
With posted pay: 100%
Median posted base: $140K–$230K

About AZX: funding, hiring and pay

AZX

About AZX: funding, hiring and pay

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The role

What you need

5+ years of deep, production experience with React/TypeScript — streaming UIs, high-frequency updates, virtualization, and real state management, with informed, hands-on opinions about React 19.
Hands-on experience with a streaming protocol end to end (SSE or WebSocket) — chunk boundaries, reconnection semantics, abort propagation — including having personally debugged a raw byte stream.
True full-stack ownership: you've shipped the backend half of your own front ends (Node/Fastify or Python/FastAPI), handling auth, idempotency, pagination, race conditions, and migrations.
Product taste backed by enterprise experience — accessibility you can defend to a screen-reader user, thoughtful empty/error states, and localization that goes beyond a strings file.
An AI-native working style: daily use of AI coding tools, driven by specs rather than vibes, with concrete examples of where you overrode a tool's output.
A strong sense of ownership – instrumentation, evals on AI-dependent behavior, cost awareness, and on-call are part of "done," not a later phase.
Practical depth in some of our core stack — TypeScript (strict), React 19, TanStack Query, Vite, Node/Fastify or Python/FastAPI, Postgres/Redis, and SSE/WebSocket streaming — with a track record of researching into unfamiliar parts of it.
Familiarity with the surrounding toolchain: zod-validated wire contracts, sandboxed iframes/CSP/postMessage, Playwright/Vitest, WCAG 2.2 AA, i18n frameworks, and OIDC/OAuth2 session mechanics
Bachelor's Degree; Master's is a plus

Why AZX!

Be part of a fast-growing, profitable, mission-driven company with industry-leading clients tackling the massive opportunity of AI transformation in critical industries.
Competitive early-stage startup compensation (based on capabilities, experience, and location)
Bonus eligibility
Health insurance with meaningful coverage for dependents
Flexible paid time off
Equity
Fully remote culture with a cluster of teammates in Seattle

Additional Information

Must be able to travel 2x/year for company summits
Applicants must be currently authorized to work in the United States on a full-time basis.
We are unable to sponsor or take over sponsorship of employment visas at this time.
Please note that our interview process includes a written take-home assignment followed by a live two-hour technical session with our engineering team, so if that format isn't a good fit, we'd ask that you not apply
Please only apply to a maximum of 2 roles at a time, any applicants who apply to more then 2 roles within a 6 month period will automatically be disqualified

Next Steps

If this job sounds like a great fit but you don’t check ALL of these qualification boxes, we’d still love to hear from you!

Senior Product Engineer (AI, Full-Stack)

The role

Senior Product Engineer (AI, Full-Stack)

The role

What you will do

What you need

Additional Information

Next Steps

About AZX

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