Staff Frontend Platform Engineer – Scalable UI & Tooling

Intuit; Carmel (IN); On-site; USD 140,000 - 190,000; Full time

Job summary

Mailchimp’s Experience Platform team designs abstractions, documentation, and best practices to empower scalable frontend infrastructure. They build or adopt tools to improve build pipelines, performance, and reliability across large codebases, with a focus on codemods and migrations at scale.

We partner with Design System and Engineering to drive consistency, mentor engineers, and push for autonomous, well-governed systems that reduce risk and improve user experience across Mailchimp's web

Qualifications

• Extensive experience in large-scale frontend development environments.

Responsibilities

• Own and maintain the shared frontend libraries used throughout the app — including how they are packaged, versioned, and distributed — along with the build, compilation, and continuous deployment of frontend assets.
• Maintain and improve the frontend engineering experience by establishing and socializing patterns, testing strategies, and tooling that drive consistency and engineer effectiveness.
• Architect and implement projects consistent with our philosophy and guidelines — including micro frontend patterns and our standards for performance and accessibility — and provide technical guidance on large-scale efforts that span multiple engineering teams.
• Design systems for agentic observability and consumability, structuring codebases for autonomous navigation, modular modification, and self-iteration.
• Establish coding and agent best practices, taking proactive steps to reduce low-quality agent-generated output through agentic oversight, adversarial agents, and deterministic guardrails.
• Guide engineers on breaking work into pieces that agents can execute reliably, enabling them to drive projects independently.
• Collaborate with, mentor, and train other engineers, providing feedback on code and architecture decisions across a distributed team.
• Ensure development focus on the company's biggest initiatives, partnering across departments to understand their operational needs and solve complex problems together.
• Stay current on evolving tools and patterns for managing infrastructure, guiding our adoption of them when appropriate.

Skills

Frontend architecture

React expertise

Code modernization

Cross-team collaboration

Agent-driven development

Tools

Bugsnag

DevTools

Logging/monitoring tools

Job description

Mailchimp’s Experience Platform team designs abstractions, documentation, and best practices to empower scalable frontend infrastructure. They build or adopt tools to improve build pipelines, performance, and reliability across large codebases, with a focus on codemods and migrations at scale.

We partner with Design System and Engineering to drive consistency, mentor engineers, and push for autonomous, well-governed systems that reduce risk and improve user experience across Mailchimp's web