diff --git a/.ci/env/derecho.sh b/.ci/env/derecho.sh
new file mode 100755
index 0000000000..2feea5c9ee
--- /dev/null
+++ b/.ci/env/derecho.sh
@@ -0,0 +1,22 @@
+#!/bin/sh
+
+echo "Setting up derecho environment"
+workingDirectory=$PWD
+. /etc/profile.d/z00_modules.sh
+echo "Loading modules : $*"
+cmd="module purge"
+echo $cmd && eval "${cmd}"
+
+# We should be handed in the modules to load
+while [ $# -gt 0 ]; do 
+  cmd="module load $1"
+  echo $cmd && eval "${cmd}"
+  shift
+done
+
+#  Go back to working directory if for unknown reason HPC config changing your directory on you
+if [ "$workingDirectory" != "$PWD" ]; then
+  echo "derecho module loading changed working directory"
+  echo "  Moving back to $workingDirectory"
+  cd $workingDirectory
+fi
diff --git a/.ci/env/helpers.sh b/.ci/env/helpers.sh
new file mode 100644
index 0000000000..2ddd560893
--- /dev/null
+++ b/.ci/env/helpers.sh
@@ -0,0 +1,46 @@
+#!/bin/sh
+
+# Useful string manipulation functions, leaving in for posterity
+# https://stackoverflow.com/a/8811800
+# contains(string, substring)
+#
+# Returns 0 if the specified string contains the specified substring,
+# otherwise returns 1.
+contains()
+{
+  string="$1"
+  substring="$2"
+  
+  if [ "${string#*"$substring"}" != "$string" ]; then
+    echo 0    # $substring is in $string
+  else
+    echo 1    # $substring is not in $string
+  fi
+}
+
+setenvStr()
+{
+  # Changing IFS produces the most consistent results
+  tmpIFS=$IFS
+  IFS=","
+  string="$1"
+  for s in $string; do
+    if [ ! -z $s ]; then 
+      eval "echo export \"$s\""
+      eval "export \"$s\""
+    fi
+  done
+  IFS=$tmpIFS
+}
+
+banner()
+{
+  lengthBanner=$1
+  shift
+  # https://www.shellscript.sh/examples/banner/
+  printf "#%${lengthBanner}s#\n" | tr " " "="
+  printf "# %-$(( ${lengthBanner} - 2 ))s #\n" "`date`"
+  printf "# %-$(( ${lengthBanner} - 2 ))s #\n" " "
+  printf "# %-$(( ${lengthBanner} - 2 ))s #\n" "$*"
+  printf "#%${lengthBanner}s#\n" | tr " " "="
+}
diff --git a/.ci/env/hostenv.sh b/.ci/env/hostenv.sh
new file mode 100644
index 0000000000..208d1e57f3
--- /dev/null
+++ b/.ci/env/hostenv.sh
@@ -0,0 +1,16 @@
+#!/bin/sh
+
+# Allow selection of hostname, and if none is provided use the current machine
+# While this may seem unintuitive at first, it provides the flexibility of using
+# "named" configurations without being explicitly tied to fqdn
+hostname=$AS_HOST
+if [ -z "$hostname" ]; then
+  hostname=$( python3 -c "import socket; print( socket.getfqdn() )" )
+fi
+
+if [ $( contains ${hostname} hsn.de.hpc ) -eq 0 ]; then
+  # Derecho HPC SuSE PBS
+  . .ci/env/derecho.sh
+else
+  echo "No known environment for '${hostname}', using current"
+fi
diff --git a/.ci/hpc-workflows b/.ci/hpc-workflows
new file mode 160000
index 0000000000..97ca807b0e
--- /dev/null
+++ b/.ci/hpc-workflows
@@ -0,0 +1 @@
+Subproject commit 97ca807b0e1b7d67a35ab10e938b29774242e48e
diff --git a/.ci/mpas_compilation.jsonc b/.ci/mpas_compilation.jsonc
new file mode 100644
index 0000000000..31e393e261
--- /dev/null
+++ b/.ci/mpas_compilation.jsonc
@@ -0,0 +1,48 @@
+// MPAS Compilation tests
+{
+  "submit_options" :
+  {
+    // Default values
+    "timelimit" : "00:15:00",
+    "working_directory" : "..",
+    "arguments" :
+    {
+      "base_env_numprocs"      : [ "-e", "NUM_PROCS=4" ],
+
+      ".*make.*::args_build_core"     : [ "-c", "atmosphere" ],
+      ".*debug.*::args_build_debug"     : [ "-d" ],
+      ".*make.*::args_build_options"     : [ "-b", "-j $NUM_PROCS" ],
+      ".*make.*gnu.*::args_target"     : [ "-t", "gnu" ]
+    },
+    // Derecho-specifics
+    "hsn.de.hpc"  :
+    {
+      "submission" : "PBS",
+      "queue"      : "main",
+      "hpc_arguments"  : 
+      {
+        "node_select" : { "-l " : { "select"       : 1, "ncpus" : 16 } },
+        "priority"    : { "-l " : { "job_priority" : "economy"       } }
+      },
+      "arguments"  : 
+      {
+        // We want NUM_PROCS to match ncpus
+        "base_env_numprocs"      : [ "-e", "NUM_PROCS=16" ],
+        "very_last_modules"       : [  "cray-mpich", "parallel-netcdf" ],
+        ".*gnu.*::test_modules"   : [ "gcc/12.2.0" ]
+      }
+    }
+  },
+  // Specific GNU compilation test
+  "make-gnu" :
+  {
+    "steps" :
+    {
+      // Eventually include debug and other compile modes
+      "optimized" :
+      {
+        "command"      : ".ci/tests/build.sh"
+      }
+    }
+  }
+}
diff --git a/.ci/tests/build.sh b/.ci/tests/build.sh
new file mode 100755
index 0000000000..3431007f52
--- /dev/null
+++ b/.ci/tests/build.sh
@@ -0,0 +1,90 @@
+#!/bin/sh
+help()
+{
+  echo "./build.sh as_host workingdir [options] [-- <hostenv.sh options>]"
+  echo "  as_host                   First argument must be the host configuration to use for environment loading"
+  echo "  workingdir                Second argument must be the working dir to immediate cd to"
+  echo "  -b                        Additional make arguments passed in"
+  echo "  -c                        Core to build"
+  echo "  -t                        Target configuration (gnu, intel, etc)"
+  echo "  -d                        Debug build"
+  echo "  -e                        environment variables in comma-delimited list, e.g. var=1,foo,bar=0"
+  echo "  -- <hostenv.sh options>   Directly pass options to hostenv.sh, equivalent to hostenv.sh <options>"
+  echo "  -h                  Print this message"
+  echo ""
+  echo "If you wish to use an env var in your arg such as '-b core=\$CORE -e CORE=atmosphere', you must"
+  echo "you will need to do '-b \\\$CORE -e CORE=atmosphere' to delay shell expansion"
+}
+
+echo "Input arguments:"
+echo "$*"
+
+AS_HOST=$1
+shift
+if [ $AS_HOST = "-h" ]; then
+  help
+  exit 0
+fi
+
+workingDirectory=$1
+shift
+
+cd $workingDirectory
+
+# Get some helper functions, AS_HOST must be set by this point to work
+. .ci/env/helpers.sh
+
+while getopts b:c:t:de:h opt; do
+  case $opt in
+    b)
+      buildCommand="$OPTARG"
+    ;;
+    c)
+      core="$OPTARG"
+    ;;
+    t)
+      target="$OPTARG"
+    ;;
+    d)
+      debug="DEBUG=true"
+    ;;
+    e)
+      envVars="$envVars,$OPTARG"
+    ;;
+    h)  help; exit 0 ;;
+    *)  help; exit 1 ;;
+    :)  help; exit 1 ;;
+    \?) help; exit 1 ;;
+  esac
+done
+
+shift "$((OPTIND - 1))"
+
+# Everything else goes to our env setup, POSIX does not specify how to pass in
+# arguments to sourced script, but all args are already shifted. This is left for
+# posterity to "show" what is happening and the assumption of the remaining args
+. .ci/env/hostenv.sh $*
+
+# Now evaluate env vars in case it pulls from hostenv.sh
+if [ ! -z "$envVars" ]; then
+  setenvStr "$envVars"
+fi
+
+# Re-evaluate input values for delayed expansion
+eval "core=\"$core\""
+eval "target=\"$target\""
+eval "buildCommand=\"$buildCommand\""
+
+make clean CORE=$core
+
+echo "Compiling with options $target core=$core $debug $buildCommand"
+echo "make $target CORE=$core $debug $buildCommand"
+make $target CORE=$core $debug $buildCommand
+result=$?
+
+if [ $result -ne 0 ]; then
+  echo "Failed to compile"
+  exit 1
+fi
+
+echo "TEST $(basename $0) PASS"
diff --git a/.gitmodules b/.gitmodules
new file mode 100644
index 0000000000..c96aa594e8
--- /dev/null
+++ b/.gitmodules
@@ -0,0 +1,3 @@
+[submodule ".ci/hpc-workflows"]
+	path = .ci/hpc-workflows
+	url = https://github.com/islas/hpc-workflows/