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Own the front-end architecture for the next generation of AWS Holmes, AWS's GenAI-powered content quality platform. You'll build production interfaces in React and TypeScript on the AWS Cloudscape Design System, turning agentic prototypes into self-service rubric management workflows and human-in-the-loop evaluation experiences that serve builders across the company. Holmes processes over 10 million scans annually, and this role leads the UI work that brings rubric creation, testing, and publishing directly to program owners at Amazon scale.
Key job responsibilities
Lead front-end development for the next generation of Holmes, building a scalable rubric management platform in React and TypeScript on the AWS Cloudscape Design System
Transform CDS agent pattern prototypes into production-grade, accessible UI frames - conversational rubric creation, interactive rule testing, and guided workflows
Build self-service rubric management: end-to-end creation, rule editing with live preview, draft/publish lifecycle, evaluation dashboards, and scan report previews
Design human-in-the-loop evaluation surfaces: diff-style content mutation views, batch review interfaces, and feedback collection that drives rubric improvement
Deliver platform UX for program integrations: simplified scan workflows, finding annotations, collaborative sharing, team permissions, and real-time scan status
Own front-end operational excellence: performance monitoring, accessibility compliance , CloudWatch RUM instrumentation, and cross-browser validation
A day in the life
You work with product managers to understand customer experiences and translate requirements into solutions

You create interactive prototypes and participate in user research sessions to validate design decisions early. You write HLD and spec documents for new features, align with backend engineers on API contracts, and implement production components in React and TypeScript. You attend team operational excellence sessions and knowledge transfer meetings, contribute to team demos showcasing new capabilities, and present your work in internal tech talks.

You review teammates' code for accessibility and component quality, and you investigate front-end observability alerts to maintain a reliable user experience.
About the team
The Holmes team builds and operates a comprehensive security scanning and quality assurance platform that enables AWS builders to identify and remediate security risks early in the development lifecycle. Holmes accelerates secure content delivery by providing automated scanning, GenAI-powered quality validation, and early feedback mechanisms that protect millions of AWS training experiences and internal/external content at scale.
Our platform currently:
- Processed 10.58 million scans across 79.57 million files in 2025
- Serves individual builders and services alike across 141+ departments
About AWS
Diverse Experiences
AWS values diverse experiences. Even if you do not meet all of the preferred qualifications and skills listed in the job description, we encourage candidates to apply

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