Guild UI Engineer at Guild focused on building React and TypeScript web applications for AI agent control planes. Collaborate with designers and backend engineers to develop high-performance interfaces and extend Python backend services.
Responsibilities
We are building the control plane for AI agents in teams and companies.
As a UI Engineer, you'll help build the user-facing layer of that control plane - the web applications, workflows, and interfaces that make powerful agent infrastructure usable by real teams. You'll work alongside another senior UI engineer, with real ownership over specific surfaces and problems rather than sole responsibility for the whole frontend. Your core craft is React and TypeScript: component architecture, state management, performance, and the judgment to turn complex systems into interfaces people trust.
Our designers aren't just handing off mockups - several of them now build UI directly, using coding agents to write real production code. A big part of this role is partnering with them: helping them realize their design intent, reviewing and hardening what they ship, and bringing software engineering discipline — architecture, performance, testing, maintainability - to the frontend as it grows. You won't own visual design; that's their job. You'll help ensure the engineering quality of what ends up in production.
You'll also work with our Python backend - reading and extending services, shaping APIs, and making sure the frontend and backend evolve together.
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 love deep frontend craft, enjoy raising the bar on code quality without gatekeeping who gets to write it, want full-stack range without carrying backend architecture solo, and care about how humans interact with autonomous systems - we want to talk.
Web Application & Product Experience (primary focus)
Help shape the architecture and implementation of our React + TypeScript web application, alongside our other senior UI engineer
Build high-performance, stateful interfaces for managing agents
Develop dashboards, policy configuration UIs, audit views, and workflow builders
Establish frontend patterns, component structure, and state management conventions the whole team - including designers - can build on
Own specific surfaces end-to-end, from first pass to production
Qualification
Comfortable reviewingComfortable working in a Python backendStrong API design instinctsExperience building CLIs
Required
Deep experience building production-grade web applications in React + TypeScript - component architecture, state management, performance
Comfortable reviewing, refactoring, and building on code written by others - including designers using AI coding tools - without being precious about who wrote it
Comfortable working in a Python backend: reading, extending, and occasionally designing services and APIs
Strong eye for interaction design and interface quality (we have designers for visual design - but you should have good taste)
Experience shipping SaaS products used by technical teams
Ability to translate complex backend systems into usable interfaces
Strong API design instincts
Experience with design systems or component libraries
Experience building developer tools or control-plane software
Experience designing workflow builders or configuration-heavy interfaces
Experience with real-time systems or streaming UIs
