Engineer — Product & User Interface Systems Job at Guild.ai in San Francisco

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

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.

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.