diff --git a/.github/workflows/maven.yml b/.github/workflows/maven.yml
index 532c1bc..4392240 100644
--- a/.github/workflows/maven.yml
+++ b/.github/workflows/maven.yml
@@ -20,40 +20,28 @@ jobs:
           java-version: "21"
           cache: maven
 
-      # Prefer apt.postgresql.org over the runner's preinstalled PostgreSQL so
-      # the postgresql-server-dev package resolves cleanly. Only pg_config is
-      # needed here — pgPointCloud produces a static libpc.a, no server.
-      - name: Remove existing PostgreSQL installations [prefer apt.postgresql.org]
-        run: |
-          sudo service postgresql stop || true
-          sudo apt-get --purge remove postgresql* -y || true
-          sudo rm -rf /var/lib/postgresql/ /etc/postgresql/ \
-            /var/log/postgresql/ || true
-
-      - name: Add PostgreSQL APT repository
-        run: |
-          sudo apt-get install -y curl ca-certificates gnupg
-          curl https://www.postgresql.org/media/keys/ACCC4CF8.asc \
-            | sudo apt-key add -
-          sudo sh -c 'echo "deb http://apt.postgresql.org/pub/repos/apt/ \
-            $(lsb_release -cs)-pgdg main" > /etc/apt/sources.list.d/pgdg.list'
-
-      - name: Install MEOS build dependencies
-        run: |
-          sudo apt-get update -qq
-          sudo apt-get install -y \
-            cmake build-essential \
-            libjson-c-dev libgeos-dev libproj-dev libgsl-dev \
-            libh3-dev libgdal-dev libxml2-dev \
-            autoconf automake libtool pkg-config \
-            postgresql-17 postgresql-server-dev-17
-
-      - name: Build libmeos.so + JMEOS.jar from the tracked commit
-        # build-jmeos.sh builds libmeos from the recorded MobilityDB commit, builds the
-        # JMEOS jar from JMEOS main, installs the jar into the local Maven repo, and stages
-        # libmeos.so under kafka-streams-app/lib. MOBILITYDB_REF is read from the single
-        # recorded surface commit so no SHA is duplicated in this workflow.
-        run: MOBILITYDB_REF="$(tr -d '[:space:]' < tools/meos-source-commit.txt)" JOBS=2 ./build-jmeos.sh
+      # Read the pinned MobilityDB commit from the single recorded surface file
+      # so no SHA is duplicated across this workflow.
+      - name: Read the pinned MobilityDB commit
+        id: meos
+        run: echo "sha=$(tr -d '[:space:]' < tools/meos-source-commit.txt)" >> "$GITHUB_OUTPUT"
+
+      # Build and install libmeos (all families, + spatial_ref_sys.csv /
+      # ways1000.csv under /usr/local/share) through the shared MEOS build
+      # recipe instead of an inline copy of it. build-jmeos.sh then only builds
+      # the JMEOS jar against this installed libmeos.
+      - name: Build and install libmeos via the shared provision-meos action
+        uses: MobilityDB/MEOS-API/.github/actions/provision-meos@master
+        with:
+          mobilitydb-ref: ${{ steps.meos.outputs.sha }}
+          build-libmeos: "true"
+
+      - name: Build JMEOS.jar against the installed libmeos
+        # libmeos is already built and installed under /usr/local by the
+        # provision-meos action, so build-jmeos.sh skips its own libmeos build
+        # and only builds the JMEOS jar from JMEOS main, installs it into the
+        # local Maven repo, and stages libmeos.so under kafka-streams-app/lib.
+        run: JOBS=2 ./build-jmeos.sh
 
       - name: Test the Kafka Streams app
         # The generated MeosOps* facades forward to the installed JMEOS jar; the tests
diff --git a/build-jmeos.sh b/build-jmeos.sh
index ef116d4..44fd671 100755
--- a/build-jmeos.sh
+++ b/build-jmeos.sh
@@ -93,48 +93,59 @@ clone_at() {
 }
 
 # ---------------------------------------------------------------------------
-# 1. Build libmeos.so from MobilityDB.
-# ---------------------------------------------------------------------------
-MDB_DIR="${WORK_DIR}/MobilityDB"
-clone_at "${MOBILITYDB_REPO}" "${MOBILITYDB_REF}" "${MDB_DIR}"
-
-# Build every optional MEOS family via -DALL so the facades link against a
-# libmeos with the full symbol surface (circular buffers, H3, JSON, network
-# points, pgPointCloud, geoposes, quadbin, raster, rigid geometries, Arrow).
-# H3 is pinned to the distro's system library (the CI apt step installs
-# libh3-dev); pgPointCloud's vendored libpc.a needs pg_config, pinned to the
-# apt.postgresql.org PostgreSQL 17 the CI workflow installs. Override via
-# MEOS_CMAKE_ARGS for a non-Debian layout.
-MEOS_CMAKE_ARGS="${MEOS_CMAKE_ARGS:--DALL=ON -DH3_LIBRARY=/usr/lib/x86_64-linux-gnu/libh3.so -DH3_INCLUDE_DIR=/usr/include/h3 -DPOSTGRESQL_PG_CONFIG=/usr/lib/postgresql/17/bin/pg_config}"
-
-log "Building libmeos.so (MEOS=ON ${MEOS_CMAKE_ARGS})"
-rm -rf "${MDB_DIR}/build"
-cmake -S "${MDB_DIR}" -B "${MDB_DIR}/build" -DMEOS=ON ${MEOS_CMAKE_ARGS} >/dev/null
-cmake --build "${MDB_DIR}/build" --target meos -j "${JOBS}"
-
-LIBMEOS_SO="$(find "${MDB_DIR}/build" -name 'libmeos.so' -print -quit)"
-[ -n "${LIBMEOS_SO}" ] || { echo "error: libmeos.so not produced by the MEOS build" >&2; exit 1; }
-log "Built ${LIBMEOS_SO}"
-
-# ---------------------------------------------------------------------------
-# 1b. Provision MEOS's SRID/network reference data at its default runtime path.
-# ---------------------------------------------------------------------------
-# libmeos resolves SRIDs by reading spatial_ref_sys.csv from a fixed default
-# path (meos/src/geo/tspatial_transform_meos.c: SPATIAL_REF_SYS_CSV =
-# "/usr/local/share/spatial_ref_sys.csv"). A full `cmake --install` would place
-# it there (meos/CMakeLists.txt), but this script only builds the `meos` target,
-# so the data files are staged explicitly. Without them, any SRID-touching call
-# (npoint, tgeompoint) makes libmeos print "Cannot open the spatial_ref_sys.csv
-# file" to stdout, which corrupts the surefire fork channel and terminates the
-# JVM under test ("The forked VM terminated without properly saying goodbye").
-MEOS_DATA_DIR="${MEOS_DATA_DIR:-/usr/local/share}"
-log "Provisioning MEOS reference data into ${MEOS_DATA_DIR}"
-provision_data() {
-  local src="$1" dst="$2"
-  install -Dm644 "${src}" "${dst}" 2>/dev/null || sudo install -Dm644 "${src}" "${dst}"
-}
-provision_data "${MDB_DIR}/meos/src/geo/spatial_ref_sys.csv" "${MEOS_DATA_DIR}/spatial_ref_sys.csv"
-provision_data "${MDB_DIR}/meos/examples/data/ways1000.csv"  "${MEOS_DATA_DIR}/ways1000.csv"
+# 1. Obtain libmeos.so.
+# ---------------------------------------------------------------------------
+# When a libmeos is already installed — e.g. CI builds and installs it through
+# the shared MobilityDB/MEOS-API provision-meos action, whose `cmake --install`
+# also provisions spatial_ref_sys.csv / ways1000.csv under /usr/local/share —
+# reuse it and build only the JMEOS jar against it. Otherwise build libmeos from
+# the pinned MobilityDB commit here (and stage the reference data explicitly).
+INSTALLED_LIBMEOS="${INSTALLED_LIBMEOS:-/usr/local/lib/libmeos.so}"
+if [ -f "${INSTALLED_LIBMEOS}" ]; then
+  LIBMEOS_SO="${INSTALLED_LIBMEOS}"
+  log "Reusing pre-installed libmeos: ${LIBMEOS_SO} (skipping the MobilityDB build)"
+else
+  MDB_DIR="${WORK_DIR}/MobilityDB"
+  clone_at "${MOBILITYDB_REPO}" "${MOBILITYDB_REF}" "${MDB_DIR}"
+
+  # Build every optional MEOS family via -DALL so the facades link against a
+  # libmeos with the full symbol surface (circular buffers, H3, JSON, network
+  # points, pgPointCloud, geoposes, quadbin, raster, rigid geometries, Arrow).
+  # H3 is pinned to the distro's system library (the CI apt step installs
+  # libh3-dev); pgPointCloud's vendored libpc.a needs pg_config, pinned to the
+  # apt.postgresql.org PostgreSQL 17 the CI workflow installs. Override via
+  # MEOS_CMAKE_ARGS for a non-Debian layout.
+  MEOS_CMAKE_ARGS="${MEOS_CMAKE_ARGS:--DALL=ON -DH3_LIBRARY=/usr/lib/x86_64-linux-gnu/libh3.so -DH3_INCLUDE_DIR=/usr/include/h3 -DPOSTGRESQL_PG_CONFIG=/usr/lib/postgresql/17/bin/pg_config}"
+
+  log "Building libmeos.so (MEOS=ON ${MEOS_CMAKE_ARGS})"
+  rm -rf "${MDB_DIR}/build"
+  cmake -S "${MDB_DIR}" -B "${MDB_DIR}/build" -DMEOS=ON ${MEOS_CMAKE_ARGS} >/dev/null
+  cmake --build "${MDB_DIR}/build" --target meos -j "${JOBS}"
+
+  LIBMEOS_SO="$(find "${MDB_DIR}/build" -name 'libmeos.so' -print -quit)"
+  [ -n "${LIBMEOS_SO}" ] || { echo "error: libmeos.so not produced by the MEOS build" >&2; exit 1; }
+  log "Built ${LIBMEOS_SO}"
+
+  # -------------------------------------------------------------------------
+  # 1b. Provision MEOS's SRID/network reference data at its default runtime path.
+  # -------------------------------------------------------------------------
+  # libmeos resolves SRIDs by reading spatial_ref_sys.csv from a fixed default
+  # path (meos/src/geo/tspatial_transform_meos.c: SPATIAL_REF_SYS_CSV =
+  # "/usr/local/share/spatial_ref_sys.csv"). A full `cmake --install` would place
+  # it there (meos/CMakeLists.txt), but this branch only builds the `meos` target,
+  # so the data files are staged explicitly. Without them, any SRID-touching call
+  # (npoint, tgeompoint) makes libmeos print "Cannot open the spatial_ref_sys.csv
+  # file" to stdout, which corrupts the surefire fork channel and terminates the
+  # JVM under test ("The forked VM terminated without properly saying goodbye").
+  MEOS_DATA_DIR="${MEOS_DATA_DIR:-/usr/local/share}"
+  log "Provisioning MEOS reference data into ${MEOS_DATA_DIR}"
+  provision_data() {
+    local src="$1" dst="$2"
+    install -Dm644 "${src}" "${dst}" 2>/dev/null || sudo install -Dm644 "${src}" "${dst}"
+  }
+  provision_data "${MDB_DIR}/meos/src/geo/spatial_ref_sys.csv" "${MEOS_DATA_DIR}/spatial_ref_sys.csv"
+  provision_data "${MDB_DIR}/meos/examples/data/ways1000.csv"  "${MEOS_DATA_DIR}/ways1000.csv"
+fi
 
 # ---------------------------------------------------------------------------
 # 2. Build JMEOS.jar against that libmeos.so.