diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
new file mode 100644
index 00000000..a9c67305
--- /dev/null
+++ b/.github/workflows/ci.yml
@@ -0,0 +1,73 @@
+name: Tests
+
+on:
+  push:
+  pull_request:
+  schedule:
+    - cron: '0 0 * * *'  # every day at midnight
+
+jobs:
+  build:
+    if: ${{ github.repository == 'slaclab/Badger' }}
+    runs-on: ${{ matrix.os }}
+    defaults:
+      run:
+        shell: bash
+    strategy:
+      max-parallel: 1
+      matrix:
+        os: [ubuntu-latest, windows-latest, macos-latest]
+        python-version: ["3.9", "3.11"]
+    env:
+      DISPLAY: ':99.0'
+      QT_MAC_WANTS_LAYER: 1  # PyQT gui tests involving qtbot interaction on macOS will fail without this
+    steps:
+      - name: Setup Mambaforge
+        uses: conda-incubator/setup-miniconda@v2
+        with:
+          miniforge-variant: Mambaforge
+          miniforge-version: latest
+          activate-environment: badger-dev
+          use-mamba: true
+          python-version: ${{ matrix.python-version }}
+
+      - uses: actions/checkout@v3
+
+      - name: Get Date
+        id: get-date
+        run: echo "today=$(/bin/date -u '+%Y%m%d')" >> $GITHUB_OUTPUT
+        shell: bash
+
+      - name: Cache Conda env
+        uses: actions/cache@v3
+        with:
+          path: ${{ env.CONDA }}/envs
+          key:
+            conda-${{ runner.os }}--${{ runner.arch }}--${{ github.workflow }}--${{
+            steps.get-date.outputs.today }}--${{
+            hashFiles('environment.yml') }}--${{ env.CACHE_NUMBER }}--${{ matrix.python-version }}
+        env:
+          CACHE_NUMBER: 0
+        id: cache
+
+      - name: Setup Mambaforge for real if not cached
+        uses: conda-incubator/setup-miniconda@v2
+        with:
+          miniforge-variant: Mambaforge
+          miniforge-version: latest
+          activate-environment: badger-dev
+          use-mamba: true
+          python-version: ${{ matrix.python-version }}
+          environment-file: environment.yml
+        if: steps.cache.outputs.cache-hit != 'true'
+
+      - name: Install Badger
+        shell: bash -l {0}
+        run: |
+          pip uninstall -y badger-opt || true
+          pip install --no-dependencies .
+
+      - name: Run Tests
+        shell: bash -l {0}
+        run: |
+          python scripts/run_tests.py
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