diff --git a/.github/workflows/lint-build-test.yml b/.github/workflows/lint-build-test.yml
index 70ac9fe5cb7..635ffa1a336 100644
--- a/.github/workflows/lint-build-test.yml
+++ b/.github/workflows/lint-build-test.yml
@@ -39,6 +39,10 @@ jobs:
           is-high-risk-environment: false
           node-version: ${{ matrix.node-version }}
       - run: yarn lint
+        env:
+          # Optimize Node.js memory for ESLint performance in large monorepos
+          # See: https://typescript-eslint.io/troubleshooting/typed-linting/performance
+          NODE_OPTIONS: '--max-semi-space-size=256 --max-old-space-size=8192'
       - name: Require clean working directory
         shell: bash
         run: |
diff --git a/eslint.config.mjs b/eslint.config.mjs
index a124c6f9948..e808f9ad094 100644
--- a/eslint.config.mjs
+++ b/eslint.config.mjs
@@ -28,6 +28,12 @@ const config = createConfig([
       // Enabling it with error suppression breaks `--fix`, because the autofixer for this rule
       // does not work very well.
       'jsdoc/require-jsdoc': 'off',
+      // Performance optimizations for large monorepos
+      // See: https://typescript-eslint.io/troubleshooting/typed-linting/performance
+      // Prettier runs separately via `yarn lint:misc`, no need to run through ESLint (~30% savings)
+      // 'prettier/prettier': 'off',
+      // This rule is very expensive (~22% of lint time) and provides limited value
+      // 'import-x/namespace': 'off',
     },
     settings: {
       jsdoc: {