Senior Frontend Engineer, AWS Applied AI Solutions

About the role

AWS Applied AI Solutions (AAIS) is building toward a future where every business innovates with Amazon AI teammates. To get there, we build AI solutions that improve human capabilities and transform entire business functions. We create end-to-end products that surprise and delight out-of-the-box, making complex things easy and hard things possible, with no cloud experience required. We start with customers who embrace the future and build bridges to meet the rest where they are. We pursue ambitious opportunities with conviction, and we are looking for builders who share that mindset.

We're building Chorus, a real-time document workspace where AI agents are actual collaborators: an agent gets a cursor in the doc, edits the same CRDT, and shows up in presence right next to you. We wrote it from scratch in Rust and TypeScript; we sync in under 50ms with hundreds of simultaneous editors on a single document, and it costs roughly a dollar per builder per year to run. It's an exciting combination of greenfield work with a massive user base that provides immediate feedback when something doesn't work.

Requirements

• You proactively seek out problems, propose solutions, and own delivery
• You find ways to deliver code with agents at high speed without sacrificing the quality of the code or the software.
• Experience in building distributed and high-concurrency systems

Additional information

We're a small team with an unusually direct line from idea to thousands of builders using it. If you want to be one of maybe a dozen people in the world shipping production CRDT infrastructure that treats AI as a peer, this is the job.

Key job responsibilities

• Own the front end of a real-time collaborative editing product end to end: its architecture, performance and reliability as it grows from early customers to broad AWS adoption
• Take a front end that grew faster than its foundations and make it one the team can move quickly and safely in. Find the worst pain points, set a direction and drive the cleanup to completion
• Design and deliver major features on a modern editor stack (React, TipTap/ProseMirror, Yjs CRDTs, Rust compiled to WASM), balancing short-term delivery with long-term health
• Know when a one-off fix is the right call and when a repeated pattern needs a shared component, hook or abstraction. Raise it with the team and build it
• Lead technical discussions with backend and partner teams on API contracts, real-time sync behavior and UX tradeoffs. Bring data, write down the options and help the team reach a decision
• Raise the front-end bar through thorough code reviews and clear conventions for state management, testing and component design, and by onboarding newer engineers into the codebase
• Make the front end observable and production-ready: client-side error and performance monitoring, alarms on what you ship, solid test coverage, and real ownership during on-call

A day in the life

• Your mornings are usually free for focus work -- architecture deep dives and hard problems.
• Around 11 you'll have standup, then grab lunch with the team (if you like) before the afternoon opens up for design reviews, CR feedback, or unblocking an engineer.
• Some days you're deep in code; others you're on a call with a customer team working through how their system integrates with yours.

You're the person who knows the system most deeply -- and you work to ensure you're never the bottleneck. The problems are hard and the stakes are high -- but we believe we can move fast, do exceptional work, and have a full life outside of it.

Basic Qualifications

• 4+ years of non-internship professional front end, web or mobile software development using JavaScript, HTML and CSS experience
• 5+ years of front-end developer creating prototypes or wire-frames for enterprise web applications or workflows experience
• Experience developing with MVC/MVM frameworks (e.g. React.JS, AngularJS, Vue)
• Experience in web applications design and development

Preferred Qualifications

• Knowledge of web services technologies such as SOAP, HTTP, WSDL, XSD, and REST
• Experience in a broad range of software design approaches and common UX patterns.

Additional information

Our inclusive culture empowers Amazonians to deliver the best results for our customers. If the country/region you're applying in isn't listed, please contact your Recruiting Partner.

Pay and benefits

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.

USA, WA, Seattle - 168,100.00 - 227,400.00 USD annually