diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
new file mode 100644
index 0000000..9ce0b8c
--- /dev/null
+++ b/.github/workflows/main.yml
@@ -0,0 +1,95 @@
+name: CI
+on:
+  workflow_dispatch:
+  push:
+    branches:
+    - master
+  pull_request:
+    branches:
+    - master
+
+defaults:
+  run:
+    shell: bash -l {0}
+
+jobs:
+  unix:
+
+    runs-on: ${{ matrix.os }}
+
+    strategy:
+      fail-fast: false
+      matrix:
+        os: [ubuntu-20.04, ubuntu-22.04, macos-13, macos-14]
+
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Get number of CPU cores
+        uses: SimenB/github-actions-cpu-cores@v2
+
+      - name: Install mamba
+        uses: mamba-org/setup-micromamba@v1
+        with:
+          environment-file: environment-dev.yml
+
+      - name: Make build directory
+        run: mkdir build
+
+      - name: Configure CMake
+        run: |
+          cmake .. \
+            -DCMAKE_PREFIX_PATH=$CONDA_PREFIX \
+            -DCMAKE_INSTALL_PREFIX=$CONDA_PREFIX \
+            -DDOWNLOAD_GTEST=ON \
+            -DCMAKE_INSTALL_LIBDIR=lib
+        working-directory: build
+
+      - name: Build
+        run: make -j ${{ steps.cpu-cores.outputs.count }}
+        working-directory: build
+
+      - name: Test xeus-calc
+        run: ./test_xeus_calc
+        working-directory: build/test
+
+  win:
+
+    runs-on: ${{ matrix.os }}
+    defaults:
+      run:
+        shell: cmd /C call {0}
+
+    strategy:
+      fail-fast: false
+      matrix:
+        os: [ windows-2019, windows-2022 ]
+
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Install mamba
+        uses: mamba-org/setup-micromamba@v1
+        with:
+          environment-file: environment-dev.yml
+          init-shell: cmd.exe
+
+      - name: Make build directory
+        run: mkdir build
+
+      - name: Configure cmake
+        run: |
+          cmake .. ^
+           -G Ninja ^
+           -DCMAKE_BUILD_TYPE=Release ^
+           -DDOWNLOAD_GTEST=ON ^
+           -DDEPENDENCY_SEARCH_PREFIX="%CONDA_PREFIX%\Library" ^
+           -DCMAKE_PREFIX_PATH="%CONDA_PREFIX%\Library" ^
+           -DCMAKE_INSTALL_PREFIX="%CONDA_PREFIX%"
+        working-directory: build
+
+      - name: Build
+        run: |
+          set CL=/MP
+          ninja install
+        working-directory: build