diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
new file mode 100644
index 0000000000..d140d72eaf
--- /dev/null
+++ b/.github/workflows/ci.yml
@@ -0,0 +1,63 @@
+name: CI
+
+on:
+  pull_request:
+    branches:
+      - dev
+  push:
+    branches:
+      - dev
+
+jobs:
+  Build-and-Test-LinuxOsx:
+    runs-on: ${{ matrix.os }}
+    strategy:
+      fail-fast: false
+      matrix:
+       os: [ubuntu-latest, macos-latest]
+    defaults:
+      run:
+        shell: bash -l {0}
+    steps:
+      - uses: actions/checkout@c85c95e3d7251135ab7dc9ce3241c5835cc595a9
+        with:
+          submodules: true
+          ref: dev
+      - uses: conda-incubator/setup-miniconda@3b0f2504dd76ef23b6d31f291f4913fb60ab5ff3
+        with:
+          miniconda-version: "latest"
+          activate-environment: isis
+          environment-file: environment.yml
+          auto-activate-base: false
+          auto-update-conda: true
+      - name: Check build environment
+        run: |
+          conda list
+          conda env export
+      - name: Download ISIS data
+        run: |
+          mkdir isis_data
+          mkdir isis_testData
+          which rclone
+          rclone mount asc_s3://asc-isisdata/usgs_data isis_data --config=${GITHUB_WORKSPACE}/isis/config/rclone.conf --daemon
+          rclone mount asc_s3://asc-isisdata/isis_testData isis_testData --config=${GITHUB_WORKSPACE}/isis/config/rclone.conf --daemon
+      - name: Build ISIS
+        run: |
+          mkdir -p build
+          cp ${GITHUB_WORKSPACE}/isis/IsisPreferences ${GITHUB_WORKSPACE}/build/
+          export ISISDATA=${GITHUB_WORKSPACE}/isis_data
+          export ISISTESTDATA=${GITHUB_WORKSPACE}/isis_testData
+          export ISISROOT=${GITHUB_WORKSPACE}/build/
+          export PATH=$PATH:${GITHUB_WORKSPACE}/build/bin/
+          cd build
+          cmake -DisisData=${GITHUB_WORKSPACE}/isis_data -DisisTestData=${GITHUB_WORKSPACE}/isis_testData -DSWIG_DIR=$CONDA_PREFIX/bin/swig -DJP2KFLAG=OFF -DCMAKE_BUILD_TYPE=RELEASE -Wdeprecated -GNinja ../isis
+          ninja
+      - name: Run ISIS tests
+        run: |
+          cd build
+          export ISISDATA=${GITHUB_WORKSPACE}/isis_data
+          export ISISTESTDATA=${GITHUB_WORKSPACE}/isis_testData
+          export ISISROOT=${GITHUB_WORKSPACE}/build/
+          export PATH=$PATH:${GITHUB_WORKSPACE}/build/bin/
+          ctest -VV
+