Product Engineer, Intelligence Interfaces

Stealth AI Startup; San Francisco (CA); Remote; USD 150,000 - 250,000; Full time

Job summary

A leading company in AI research is seeking a Product Engineer to design critical user-facing systems where real-time model behavior becomes structured. This role requires experience in building intuitive interfaces for expert users, utilizing skills in React, TypeScript, and dynamic frontend architectures. Join a small senior team dedicated to clarity and performance in a remote-flexible environment offering meaningful equity.

Benefits

Medical insurance

Vision insurance

401(k)

Paid maternity leave

Paid paternity leave

Meaningful equity

Qualifications

• Expérience approfondie avec React et TypeScript.
• Capacité à travailler dans des environnements de produits.
• Intérêt pour l'architecture durable et la performance.

Responsibilities

• Architecturer et construire des expériences produits réactives et en temps réel.
• Concevoir des interfaces basées sur le jugement des utilisateurs.
• Définir les workflows pour les utilisateurs expérimentés.

Skills

React

TypeScript

Node.js

Real-time UIs

Frontend architectures

Tools

Tailwind

Python

Rust

Job description

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This range is provided by Stealth AI Startup. Your actual pay will be based on your skills and experience — talk with your recruiter to learn more.

Base pay range

$150,000.00/yr - $250,000.00/yr

Additional compensation types

RSUs

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Senior Talent Partner @ Stealth AI start-up (via Talentful)

Craft the interface where adaptive systems become legible, structured, and trusted.

About Noumena

Noumena is an AI research lab and product company building toward AGI through narrow, adaptive intelligence. We design systems that evolve through use, reflecting and amplifying the judgment of expert users. By owning the full stack, from silicon to interface, we ensure intelligence and interaction evolve in lockstep.

We’re starting with expert software developers, but the platform we’re building will adapt to experts across fields: engineering, research, planning, and beyond.

About the Role

We’re hiring a Product Engineer to lead the design and implementation of our most critical user-facing systems: interfaces where real-time model behavior becomes structured, intuitive experience.

This is not frontend-as-polish. It’s frontend as product. You’ll work closely with model, infrastructure, and design leads to build tools where adaptive intelligence becomes actionable, visible, and trusted. You’ll define how these surfaces behave, not just how they look. Our users aren’t casual, they’re experts: engineers, researchers, and high-agency builders who demand clarity and precision.

TypeScript, React, Next.js, Tailwind, Node.js. Bonus points for experience across the stack with Python or Rust, and with model-adaptive or real-time UIs.

Responsibilities

• Architect and build responsive, real-time product experiences
• Design opinionated interfaces grounded in user judgment and model feedback
• Shape UI logic that evolves with system capabilities
• Prototype and iterate interaction paradigms that adapt through use
• Define workflows that support deep users, from onboarding to power use

You May Be a Good Fit If You:

• Have deep experience with React, TypeScript, and dynamic frontend architectures
• Think in flows and system constraints, not just layout or state
• Have built structured tools for technical users or high-leverage domains
• Care about performance, clarity, and long-term architectural health
• Thrive in zero-to-one product environments and high-agency teams

Bonus Points For:

• Working across the stack (TypeScript, Python, Rust)
• Building editors, structured planning tools, or real-time UIs
• Designing for data-heavy or model-driven applications
• Engineering feedback loops between system use and behavior

Why This Role Matters

This is the surface layer of Noumena’s intelligence engine, the space where capability becomes clarity. Every interaction you shape becomes a site of adaptation, trust, and refinement. You’re not just building a product, you’re defining how usable intelligence feels.

Team & Culture

We’re a small, senior team of researchers, engineers, and builders. We value deep ownership, curiosity, and deliberate thinking. We care about coherence, from silicon to syntax, and we move with quiet urgency.

We’re remote-flexible and invest in real-world time together, especially during pivotal build phases. We’re radically deliberate: open to experimentation, allergic to drift, and committed to systems that matter.

Location & Compensation

• Remote-flexible (with travel covered for quarterly in-person gatherings)
• Open to candidates spending time in the Bay Area during key build phases
• Includes meaningful equity: high-impact work means high ownership

Seniority level

• Seniority level

  Mid-Senior level

Employment type

• Employment type

  Full-time

Job function

• Industries

  Technology, Information and Internet

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Inferred from the description for this job

Medical insurance

Vision insurance

401(k)

Paid paternity leave

Paid maternity leave

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