Engineer — Product & User Interface Systems

guild· Engineering
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📍 San FranciscoFullTime💰 USD 140K–320K/yr

About this role

We're building the control plane for AI agents in teams and companies.

As a Founding Engineer focused on Product & User Interface Systems, you will design and build the user-facing layer of that control plane — the web applications, workflows, and interfaces that make powerful agent infrastructure usable by real teams.

This is not a “frontend-only” role. You will work across the stack: distributed cloud-based systems, Kubernetes-based services, and modern web applications. You’ll collaborate deeply with product and design to turn complex infrastructure into intuitive, high-leverage user experiences.

You’ll also help define a new interface paradigm: agents as an interactive modality — not just chat, but structured, controllable, and production-grade workflows.

If you care about product quality, system coherence, and shaping how humans interact with autonomous systems — we want to talk.

What You’ll Own

You will build and evolve the user-facing layer of our platform:

Web Application & Product Experience

  • Design and implement React + TypeScript web applications

  • Build high-performance, stateful interfaces for managing agents

  • Develop dashboards, policy configuration UIs, audit views, and workflow builders

  • Create systems that make complex agent behavior understandable and controllable

Full-Stack Engineering

  • Build backend services supporting the UI

  • Design APIs for agent control, policy configuration, and observability

  • Work within a Kubernetes-native, cloud-based distributed system

  • Collaborate on schema design, data modeling, and service boundaries

Agent-Native Interfaces

  • Explore agents as a new user interface modality

  • Design structured, interactive agent workflows beyond simple chat

  • Combine UI controls with agent reasoning

  • Experiment with hybrid patterns: visual + conversational + automated systems

CLI & Future Interfaces

  • Contribute to a TypeScript- or Python-based CLI

  • Design consistent interaction patterns across web and CLI

  • Lay groundwork for potential future mobile interfaces

Product & Design Collaboration

  • Work closely with product and design to translate concepts into shipped software

  • Participate in usability thinking and iterative refinement

  • Ship quickly, iterate based on feedback, and improve continuously

What We’re Looking For

  • Experience building production-grade web applications in React + TypeScript

  • Comfort working across the full-stack of distributed systems

  • Strong API design instincts

  • Experience shipping SaaS products used by technical teams

  • Ability to translate complex backend systems into usable interfaces

  • Strong product intuition and UX sensibility

Bonus

  • Experience building developer tools or control-plane software

  • Experience designing workflow builders or configuration-heavy interfaces

  • Experience with real-time systems or streaming UIs

  • Experience building CLIs

  • Familiarity with LLM-powered products or agent systems

What Makes This Role Unique

  • You’ll help define how teams interact with autonomous agents.

  • You’ll build interfaces for infrastructure-level systems.

  • You’ll operate at the intersection of product design, distributed systems, and AI.

  • You’ll have ownership from concept to production.

This is a high-impact, high-autonomy role. You’ll influence product direction and user experience at the foundational stage of the company.

Who Thrives Here

  • Engineers who care about product polish and system clarity.

  • Builders who like working across frontend and backend.

  • People comfortable turning complexity into usable abstractions.

  • Those excited about inventing new human–AI interaction models.

Frequently Asked Questions

What is the salary for the Engineer — Product & User Interface Systems role at guild?
The listed salary for this Engineer — Product & User Interface Systems position at guild is USD 140K–320K/yr. This is an FullTime role.
Where is the Engineer — Product & User Interface Systems position at guild located?
This Engineer — Product & User Interface Systems role at guild is based in San Francisco. The position is listed as on-site or hybrid. Check the full job description or apply directly to confirm the work arrangement.
Is the Engineer — Product & User Interface Systems role at guild full-time or part-time?
This is listed as a FullTime position. It is posted as a Engineer — Product & User Interface Systems role in the Engineering department at guild.
Which team or department does the Engineer — Product & User Interface Systems at guild belong to?
This Engineer — Product & User Interface Systems position is part of the Engineering department at guild. See the full job description for more information about the team structure and responsibilities.
How do I apply for the Engineer — Product & User Interface Systems position at guild?
Click the "Apply Now" button on this page. You will be redirected to guild's official application portal hosted on ashby where you can submit your application directly.
When was the Engineer — Product & User Interface Systems job at guild posted?
This Engineer — Product & User Interface Systems position at guild was posted on Feb 13, 2026. Apply as soon as possible — early applications are often reviewed first.
Engineer — Product & User Interface Systems
guild · 💰 USD 140K–320K/yr
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You'll be redirected to guild's official application page on Ashby ATS.