diff --git a/.github/workflows/black.yaml b/.github/workflows/black.yaml
new file mode 100644
index 000000000..5e8b698d6
--- /dev/null
+++ b/.github/workflows/black.yaml
@@ -0,0 +1,18 @@
+name: black
+
+on: [push, pull_request]
+
+# use workaround due to: https://github.com/psf/black/issues/2079#issuecomment-812359146
+jobs:
+    check-formatting:
+        runs-on: ubuntu-22.04
+        steps:
+            - uses: actions/checkout@v2
+            - name: Set up Python 3.11
+              uses: actions/setup-python@v2
+              with:
+                python-version: '3.11'
+            - name: Install Black
+              run: pip install 'black==22.6.0'
+            - name: Run black --check .
+              run: black --check .
diff --git a/.github/workflows/coverage.yaml b/.github/workflows/coverage.yaml
new file mode 100644
index 000000000..b3cd8de03
--- /dev/null
+++ b/.github/workflows/coverage.yaml
@@ -0,0 +1,41 @@
+name: Coverage
+
+on:
+  push:
+    branches:
+      - main
+    paths-ignore:
+      - 'doc/**'
+  pull_request:
+    paths-ignore:
+      - 'doc/**'
+
+jobs:
+  build:
+    runs-on: ubuntu-22.04
+    env:
+      GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+      COVERALLS_REPO_TOKEN: ${{ secrets.COVERALLS_REPO_TOKEN }}
+    steps:
+      - uses: actions/checkout@v2
+      - name: Setup Python
+        uses: actions/setup-python@v2
+        with:
+          python-version: '3.11'
+      - name: Update package index
+        run: sudo apt-get update
+      - name: Install ARMI and MPI
+        run: |
+          sudo apt-get -y install libopenmpi-dev
+          pip install -e .[memprof,mpi,test]
+      - name: Run Coverage
+        run: |
+          coverage run --rcfile=pyproject.toml -m pytest -n 4 --cov=armi --cov-config=pyproject.toml --cov-report=lcov --ignore=venv armi
+          mpiexec -n 2 --use-hwthread-cpus coverage run --rcfile=pyproject.toml -m pytest --cov=armi --cov-config=pyproject.toml --cov-report=lcov --cov-append --ignore=venv armi/tests/test_mpiFeatures.py || true
+          mpiexec -n 2 --use-hwthread-cpus coverage run --rcfile=pyproject.toml -m pytest --cov=armi --cov-config=pyproject.toml --cov-report=lcov --cov-append --ignore=venv armi/tests/test_mpiParameters.py || true
+          coverage combine --rcfile=pyproject.toml --keep -a
+      - name: Publish to coveralls.io
+        uses: coverallsapp/github-action@v1.1.2
+        with:
+          github-token: ${{ secrets.GITHUB_TOKEN }}
+          path-to-lcov: coverage.lcov
diff --git a/.github/workflows/docs.yaml b/.github/workflows/docs.yaml
new file mode 100644
index 000000000..8f7f1a0cf
--- /dev/null
+++ b/.github/workflows/docs.yaml
@@ -0,0 +1,41 @@
+name: Documentation
+
+on:
+  push:
+    branches:
+      - main
+
+jobs:
+  build:
+
+    runs-on: ubuntu-22.04
+
+    steps:
+      - uses: actions/checkout@v2
+      - name: Setup Python
+        uses: actions/setup-python@v2
+        with:
+          python-version: 3.9
+      - name: Update package index
+        run: sudo apt-get update
+      - name: Install mpi libs
+        run: sudo apt-get -y install libopenmpi-dev
+      - name: Install Pandoc
+        run: sudo apt-get -y install pandoc
+      - name: Setup Graphviz
+        uses: ts-graphviz/setup-graphviz@v2.0.2
+      - name: Make HTML Docs
+        run: |
+          pip install -e .[memprof,mpi,test,docs]
+          cd doc
+          git submodule init
+          git submodule update
+          make html
+      - name: deploy
+        uses: JamesIves/github-pages-deploy-action@v4.6.1
+        with:
+          token: ${{ secrets.ACCESS_TOKEN }}
+          repository-name: ${{ github.repository_owner }}/terrapower.github.io
+          branch: main
+          folder: doc/_build/html
+          target-folder: armi
diff --git a/.github/workflows/licensechecker.yaml b/.github/workflows/licensechecker.yaml
new file mode 100644
index 000000000..abeee0e47
--- /dev/null
+++ b/.github/workflows/licensechecker.yaml
@@ -0,0 +1,9 @@
+name: Check License Lines
+on: [push, pull_request]
+jobs:
+  check-license-lines:
+    runs-on: ubuntu-24.04
+    steps:
+    - uses: actions/checkout@master
+    - name: Check License Lines
+      uses: kt3k/license_checker@v1.0.6
diff --git a/.github/workflows/linting.yaml b/.github/workflows/linting.yaml
new file mode 100644
index 000000000..855b4b6cf
--- /dev/null
+++ b/.github/workflows/linting.yaml
@@ -0,0 +1,21 @@
+name: Linting
+
+on: [push, pull_request]
+
+jobs:
+  build:
+
+    runs-on: ubuntu-24.04
+
+    steps:
+      - uses: actions/checkout@v2
+      - name: Setup Python
+        uses: actions/setup-python@v2
+        with:
+          python-version: '3.9'
+      - name: Update package index
+        run: sudo apt-get update
+      - name: Run Linter
+        run:  |
+          pip install -e .[test]
+          ruff .
diff --git a/.github/workflows/unittests.yaml b/.github/workflows/unittests.yaml
new file mode 100644
index 000000000..15c0b2364
--- /dev/null
+++ b/.github/workflows/unittests.yaml
@@ -0,0 +1,35 @@
+name: ARMI unit tests
+
+on:
+  push:
+    paths-ignore:
+      - 'doc/**'
+  pull_request:
+    paths-ignore:
+      - 'doc/**'
+
+jobs:
+  build:
+
+    runs-on: ubuntu-22.04
+    strategy:
+      matrix:
+        python: [3.7, 3.8, 3.9, '3.10', '3.11']
+
+    steps:
+      - uses: actions/checkout@v2
+      - name: Setup Python
+        uses: actions/setup-python@v2
+        with:
+          python-version: ${{ matrix.python }}
+      - name: Update package index
+        run: sudo apt-get update
+      - name: Install mpi libs
+        run: sudo apt-get -y install libopenmpi-dev
+      - name: Run Tests and Coverage
+        run: |
+          pip install -e .[memprof,mpi,test]
+          pytest -n 4 armi
+          mpiexec -n 2 --use-hwthread-cpus coverage run --rcfile=pyproject.toml -m pytest --cov=armi --cov-config=pyproject.toml --cov-report=lcov --cov-append --ignore=venv armi/tests/test_mpiFeatures.py || true
+          mpiexec -n 2 --use-hwthread-cpus coverage run --rcfile=pyproject.toml -m pytest --cov=armi --cov-config=pyproject.toml --cov-report=lcov --cov-append --ignore=venv armi/tests/test_mpiParameters.py || true
+          coverage combine --rcfile=pyproject.toml --keep -a
diff --git a/.github/workflows/validatemanifest.py b/.github/workflows/validatemanifest.py
new file mode 100644
index 000000000..2e1fd901a
--- /dev/null
+++ b/.github/workflows/validatemanifest.py
@@ -0,0 +1,57 @@
+# Copyright 2022 TerraPower, LLC
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+"""
+Validating the package-data in the pyproject.toml.
+
+Validate that we aren't trying to include files that don't exist.
+"""
+
+from glob import glob
+import os
+import toml
+
+# CONSTANTS
+ARMI_DIR = "armi/"
+PRPROJECT = "pyproject.toml"
+
+
+def main():
+    # parse the data files out of the pyproject.toml
+    txt = open(PRPROJECT, "r").read()
+    data = toml.loads(txt)
+    fileChunks = data["tool"]["setuptools"]["package-data"]["armi"]
+
+    # loop through each line in the package-data and find all the file paths
+    errors = []
+    for i, line in enumerate(fileChunks):
+        # make sure the file exists
+        path = ARMI_DIR + line.strip()
+        if "*" in path:
+            paths = [f for f in glob(path) if len(f) > 3]
+            if not len(paths):
+                errors.append((i, path))
+        else:
+            if not os.path.exists(path):
+                errors.append((i, path))
+
+    # If there were any missing files, raise an Error.
+    if errors:
+        for (i, line) in errors:
+            print("Nonexistant file on line {}: {}".format(i, line))
+        raise ValueError("Package-data file is incorrect: includes non-existant files.")
+
+
+if __name__ == "__main__":
+    main()
diff --git a/.github/workflows/validatemanifest.yaml b/.github/workflows/validatemanifest.yaml
new file mode 100644
index 000000000..acd640208
--- /dev/null
+++ b/.github/workflows/validatemanifest.yaml
@@ -0,0 +1,19 @@
+name: Validate Manifest
+
+on: [push, pull_request]
+
+jobs:
+  build:
+
+    runs-on: ubuntu-24.04
+
+    steps:
+      - uses: actions/checkout@v2
+      - name: Setup Python
+        uses: actions/setup-python@v2
+        with:
+          python-version: '3.11'
+      - name: Validate Manifest
+        run: |
+          pip install toml
+          python .github/workflows/validatemanifest.py