Staff Frontend Engineer (Internal Applications)

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Requirements:

• 7+ years in front-end development, with 3+ years specializing in web components (LitElement/Lit, Svelte, etc.).
• Mastery of TypeScript, including advanced type utilities and monorepo workflows.
• Proven experience building internal tools/frameworks.
• Deep knowledge of backend integration patterns: REST, gRPC/Protobuf, OpenAPI specs, and BFF architectures.
• Expertise in build tooling (Rollup, esbuild), testing (Web Test Runner), and CI/CD pipelines.
• Strong communication skills to align stakeholders across engineering, product, and DevOps.

Responsibilities:

• Design and implement a unified LitElement-based component library for internal tools, prioritizing reusability, accessibility, and performance.
• Establish coding standards, documentation, and contribution workflows for cross-team adoption.
• Optimize build pipelines (e.g., Webpack, Vite) for tree-shaking, testing, and versioning.
• Create frontend patterns for consuming REST APIs, Protobuf schemas, and WebSocket streams.
• Collaborate with backend teams to define API contracts, error-handling standards, and authentication flows (OAuth2, JWT).
• Implement shared TypeScript types/interfaces for API responses to reduce integration friction.
• Build CLI tools or templates to scaffold new internal apps with preconfigured state management, routing, and API layers.
• Mentor engineers on LitElement best practices, custom element lifecycle, and reactive programming.
• Conduct code reviews and architectural audits to enforce consistency.
• Profile and optimize rendering performance (e.g., lazy loading, memoization, pagination) for data-heavy internal tools.
• Design a theming system with CSS custom properties and shadow DOM encapsulation.