Front-End Engineer, AWS Holmes, AWS Holmes

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., 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

2+ years of non-internship professional front end, web or mobile software development using JavaScript, HTML and CSS experience

• 1+ years of computer science fundamentals (object-oriented design, data structures, algorithm design, problem solving and complexity analysis) experience

• Experience using JavaScript frameworks such as angular and react

• Experience building reusable UX components or libraries

Preferred Qualifications

• 1+ years of agile software development methodology experience

• Experience with common front-end technologies such as HTML, CSS, JS, TypeScript, and Node

• Knowledge of professional software engineering & best practices for full software development life cycle, including coding standards, software architectures, code reviews, source control management, continuous deployments, testing, and operational excellence

Amazon Web Services (AWS) is the world’s most comprehensive and broadly adopted cloud platform. We pioneered cloud computing and never stopped innovating - that’s why customers from the most successful startups to Global 500 companies trust our robust suite of products and services to power their businesses.

Inclusive Team Culture

Here at AWS, it’s in our nature to learn and be curious. Our employee-led affinity groups foster a culture of inclusion that empower us to be proud of our differences. Ongoing events and learning experiences, including our Conversations on Race and Ethnicity (CORE) and AmazeCon (gender diversity) conferences, inspire us to never stop embracing our uniqueness.

Mentorship & Career Growth

We’re continuously raising our performance bar as we strive to become Earth’s Best Employer. That’s why you’ll find endless knowledge-sharing, mentorship and other career-advancing resources here to help you develop into a better-rounded professional.

Work/Life Balance

We value work-life harmony. Achieving success at work should never come at the expense of sacrifices at home, which is why we strive for flexibility as part of our working culture. When we feel supported in the workplace and at home, there’s nothing we can’t achieve in the cloud., The base salary range for this position is listed below. Your Amazon package will include sign-on payments and restricted stock units (RSUs). Final compensation will be determined based on factors including experience, qualifications, and location. Amazon also offers comprehensive benefits including health insurance (medical, dental, vision, prescription, Basic Life & AD&D insurance and option for Supplemental life plans, EAP, Mental Health Support, Medical Advice Line, Flexible Spending Accounts, Adoption and Surrogacy Reimbursement coverage), 401(k) matching, paid time off, and parental leave. Learn more about our benefits at https://amazon.jobs/en/benefits .

USA, TX, Austin - 143,700.00 - 194,400.00 USD annually

USA, TX, Houston - 143,700.00 - 194,400.00 USD annually