diff --git a/.github/workflows/build-src.yml b/.github/workflows/build-src.yml
index 1383c4e219597..67a363975a45d 100644
--- a/.github/workflows/build-src.yml
+++ b/.github/workflows/build-src.yml
@@ -15,11 +15,17 @@ on:
         description: "Key needed to access cached depends"
         required: true
         type: string
+    outputs:
+      key:
+        description: "Key needed for restoring artifacts bundle"
+        value: ${{ jobs.build-src.outputs.key }}
 
 jobs:
   build-src:
     name: Build source
     runs-on: ubuntu-24.04
+    outputs:
+      key:  ${{ steps.bundle.outputs.key }}
     container:
       image: ${{ inputs.container-path }}
       options: --user root
@@ -89,9 +95,20 @@ jobs:
           ./ci/dash/test_unittests.sh
         shell: bash
 
-      - name: Upload build artifacts
+      - name: Bundle artifacts
+        id: bundle
+        run: |
+          export BUILD_TARGET="${{ inputs.build-target }}"
+          export BUNDLE_KEY="build-${BUILD_TARGET}-$(git rev-parse --short=8 HEAD)"
+          ./ci/dash/bundle-artifacts.sh create
+          echo "key=${BUNDLE_KEY}" >> "${GITHUB_OUTPUT}"
+
+      - name: Upload artifacts
         uses: actions/upload-artifact@v4
         with:
-          name: build-artifacts-${{ inputs.build-target }}
+          name: ${{ steps.bundle.outputs.key }}
           path: |
-            /output
+            ${{ steps.bundle.outputs.key }}.tar.zst
+          compression-level: 0
+          overwrite: true
+          retention-days: 3
diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index 6b14bf2dfa1ee..8b3ba89217800 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -154,3 +154,39 @@ jobs:
       build-target: win64
       container-path: ${{ needs.container.outputs.path }}
       depends-key: ${{ needs.depends-win64.outputs.key }}
+
+  test-linux64:
+    name: linux64-test
+    uses: ./.github/workflows/test-src.yml
+    needs: [container, depends-linux64, src-linux64]
+    with:
+      bundle-key: ${{ needs.src-linux64.outputs.key }}
+      build-target: linux64
+      container-path: ${{ needs.container.outputs.path }}
+
+  test-linux64_nowallet:
+    name: linux64_nowallet-test
+    uses: ./.github/workflows/test-src.yml
+    needs: [container, depends-linux64_nowallet, src-linux64_nowallet]
+    with:
+      bundle-key: ${{ needs.src-linux64_nowallet.outputs.key }}
+      build-target: linux64_nowallet
+      container-path: ${{ needs.container.outputs.path }}
+
+  test-linux64_sqlite:
+    name: linux64_sqlite-test
+    uses: ./.github/workflows/test-src.yml
+    needs: [container, depends-linux64, src-linux64_sqlite]
+    with:
+      bundle-key: ${{ needs.src-linux64_sqlite.outputs.key }}
+      build-target: linux64_sqlite
+      container-path: ${{ needs.container.outputs.path }}
+
+  test-linux64_ubsan:
+    name: linux64_ubsan-test
+    uses: ./.github/workflows/test-src.yml
+    needs: [container, depends-linux64, src-linux64_ubsan]
+    with:
+      bundle-key: ${{ needs.src-linux64_ubsan.outputs.key }}
+      build-target: linux64_ubsan
+      container-path: ${{ needs.container.outputs.path }}
diff --git a/.github/workflows/test-src.yml b/.github/workflows/test-src.yml
new file mode 100644
index 0000000000000..62e47d0152eee
--- /dev/null
+++ b/.github/workflows/test-src.yml
@@ -0,0 +1,83 @@
+name: Test source
+
+on:
+  workflow_call:
+    inputs:
+      bundle-key:
+        description: "Key needed to access bundle of artifacts"
+        required: true
+        type: string
+      build-target:
+        description: "Target name as defined by inputs.sh"
+        required: true
+        type: string
+      container-path:
+        description: "Path to built container at registry"
+        required: true
+        type: string
+
+env:
+  INTEGRATION_TESTS_ARGS: "--extended --exclude feature_pruning,feature_dbcrash"
+
+jobs:
+  test-src:
+    name: Test source
+    runs-on: ubuntu-24.04
+    container:
+      image: ${{ inputs.container-path }}
+      options: --user root
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v4
+        with:
+          ref: ${{ github.event.pull_request.head.sha }}
+          fetch-depth: 1
+
+      - name: Download build artifacts
+        uses: actions/download-artifact@v4
+        with:
+          name: ${{ inputs.bundle-key }}
+
+      - name: Manage releases cache
+        uses: actions/cache@v4
+        if: inputs.build-target == 'linux64'
+        with:
+          path: |
+            releases
+          key: releases-${{ hashFiles('ci/test/00_setup_env_native_qt5.sh', 'test/get_previous_releases.py') }}
+
+      - name: Run functional tests
+        id: test
+        run: |
+          git config --global --add safe.directory "$PWD"
+          export BUILD_TARGET="${{ inputs.build-target }}"
+          export BUNDLE_KEY="${{ inputs.bundle-key }}"
+          ./ci/dash/bundle-artifacts.sh extract
+          ./ci/dash/slim-workspace.sh
+          source ./ci/dash/matrix.sh
+          ./ci/dash/test_integrationtests.sh ${INTEGRATION_TESTS_ARGS}
+        shell: bash
+
+      - name: Bundle test logs
+        id: bundle
+        if: success() || (failure() && steps.test.outcome == 'failure')
+        run: |
+          export BUILD_TARGET="${{ inputs.build-target }}"
+          echo "short-sha=$(git rev-parse --short=8 HEAD)" >> "${GITHUB_OUTPUT}"
+          ( [ -d "testlogs" ] && echo "upload-logs=true" >> "${GITHUB_OUTPUT}" && ./ci/dash/bundle-logs.sh ) \
+                              || echo "upload-logs=false" >> "${GITHUB_OUTPUT}"
+        shell: bash
+
+      - name: Upload test logs
+        uses: actions/upload-artifact@v4
+        if: |
+          success() || (failure() && steps.test.outcome == 'failure')
+          && steps.bundle.outputs.upload-logs == 'true'
+        with:
+          name: test_logs-${{ inputs.build-target }}-${{ steps.bundle.outputs.short-sha }}
+          path: |
+            test_logs-${{ inputs.build-target }}.tar.zst
+            test_logs-${{ inputs.build-target }}.tar.zst.sha256
+          compression-level: 0
+          overwrite: true
+          retention-days: 1
diff --git a/ci/dash/bundle-artifacts.sh b/ci/dash/bundle-artifacts.sh
new file mode 100755
index 0000000000000..4dee647179334
--- /dev/null
+++ b/ci/dash/bundle-artifacts.sh
@@ -0,0 +1,59 @@
+#!/usr/bin/env bash
+# Copyright (c) 2024-2025 The Dash Core developers
+# Distributed under the MIT software license, see the accompanying
+# file COPYING or http://www.opensource.org/licenses/mit-license.php.
+
+export LC_ALL=C.UTF-8
+
+set -eo pipefail
+
+SH_NAME="$(basename "${0}")"
+VERB="${1}"
+
+if [ -z "${BUILD_TARGET}" ]; then
+  echo "${SH_NAME}: BUILD_TARGET not defined, cannot continue!";
+  exit 1;
+elif [ -z "${BUNDLE_KEY}" ]; then
+  echo "${SH_NAME}: BUNDLE_KEY not defined, cannot continue!";
+  exit 1;
+elif  [ ! "$(command -v zstd)" ]; then
+  echo "${SH_NAME}: zstd not found, cannot continue!";
+  exit 1;
+elif [ -z "${VERB}" ]; then
+  echo "${SH_NAME}: Verb missing, acceptable values 'create' or 'extract'";
+  exit 1;
+elif [ "${VERB}" != "create" ] && [ "${VERB}" != "extract" ]; then
+  echo "${SH_NAME}: Invalid verb '${VERB}', expected 'create' or 'extract'";
+  exit 1;
+fi
+
+OUTPUT_ARCHIVE="${BUNDLE_KEY}.tar.zst"
+if [ -f "${OUTPUT_ARCHIVE}" ] && [ "${VERB}" = "create" ]; then
+  echo "${SH_NAME}: ${OUTPUT_ARCHIVE} already exists, cannot continue!";
+  exit 1;
+elif [ ! -f "${OUTPUT_ARCHIVE}" ] && [ "${VERB}" = "extract" ]; then
+  echo "${SH_NAME}: ${OUTPUT_ARCHIVE} missing, cannot continue!";
+  exit 1;
+fi
+
+if [ "${VERB}" = "create" ]; then
+  EXCLUSIONS=(
+    "*.a"
+    "*.o"
+    ".deps"
+    ".libs"
+  )
+  EXCLUSIONS_ARG=""
+  for excl in "${EXCLUSIONS[@]}"
+  do
+    EXCLUSIONS_ARG+=" --exclude=${excl}";
+  done
+
+  # shellcheck disable=SC2086
+  tar ${EXCLUSIONS_ARG} --use-compress-program="zstd -T0 -5" -cf "${OUTPUT_ARCHIVE}" "build-ci";
+elif [ "${VERB}" = "extract" ]; then
+  tar --use-compress-program="unzstd" -xf "${OUTPUT_ARCHIVE}";
+else
+  echo "${SH_NAME}: Generic error";
+  exit 1;
+fi
diff --git a/ci/dash/bundle-logs.sh b/ci/dash/bundle-logs.sh
new file mode 100755
index 0000000000000..f2c022a7a9290
--- /dev/null
+++ b/ci/dash/bundle-logs.sh
@@ -0,0 +1,28 @@
+#!/usr/bin/env bash
+# Copyright (c) 2025 The Dash Core developers
+# Distributed under the MIT software license, see the accompanying
+# file COPYING or http://www.opensource.org/licenses/mit-license.php.
+
+export LC_ALL=C.UTF-8
+
+set -eo pipefail
+
+SH_NAME="$(basename "${0}")"
+LOG_DIRECTORY="testlogs"
+
+if [ ! -d "${LOG_DIRECTORY}" ]; then
+  echo "${SH_NAME}: '${LOG_DIRECTORY}' directory missing, will skip!";
+  exit 0;
+elif [ -z "${BUILD_TARGET}" ]; then
+  echo "${SH_NAME}: BUILD_TARGET not defined, cannot continue!";
+  exit 1;
+fi
+
+LOG_ARCHIVE="test_logs-${BUILD_TARGET}.tar.zst"
+if [ -f "${LOG_ARCHIVE}" ]; then
+  echo "${SH_NAME}: ${LOG_ARCHIVE} already exists, cannot continue!";
+  exit 1;
+fi
+
+tar --use-compress-program="zstd -T0 -5" -cf "${LOG_ARCHIVE}" "${LOG_DIRECTORY}"
+sha256sum "${LOG_ARCHIVE}" > "${LOG_ARCHIVE}.sha256";
diff --git a/ci/dash/slim-workspace.sh b/ci/dash/slim-workspace.sh
new file mode 100755
index 0000000000000..1a3aa3a601896
--- /dev/null
+++ b/ci/dash/slim-workspace.sh
@@ -0,0 +1,41 @@
+#!/usr/bin/env bash
+# Copyright (c) 2025 The Dash Core developers
+# Distributed under the MIT software license, see the accompanying
+# file COPYING or http://www.opensource.org/licenses/mit-license.php.
+
+export LC_ALL=C.UTF-8
+
+set -eo pipefail
+
+SH_NAME="$(basename "${0}")"
+
+if [ -z "${BUILD_TARGET}" ]; then
+  echo "${SH_NAME}: BUILD_TARGET not defined, cannot continue!";
+  exit 1;
+elif [ -z "${BUNDLE_KEY}" ]; then
+  echo "${SH_NAME}: BUNDLE_KEY not defined, cannot continue!";
+  exit 1;
+fi
+
+TARGETS=(
+  # Bundle restored from artifact
+  "${BUNDLE_KEY}.tar.zst"
+  # Binaries not needed by functional tests
+  "build-ci/dashcore-${BUILD_TARGET}/src/dash-tx"
+  "build-ci/dashcore-${BUILD_TARGET}/src/bench/bench_dash"
+  "build-ci/dashcore-${BUILD_TARGET}/src/qt/dash-qt"
+  "build-ci/dashcore-${BUILD_TARGET}/src/qt/test/test_dash-qt"
+  "build-ci/dashcore-${BUILD_TARGET}/src/test/test_dash"
+  "build-ci/dashcore-${BUILD_TARGET}/src/test/fuzz/fuzz"
+  # Misc. files that can be heavy
+  "build-ci/dashcore-${BUILD_TARGET}/src/qt/qrc_bitcoin.cpp"
+  "build-ci/dashcore-${BUILD_TARGET}/src/qt/qrc_dash_locale.cpp"
+)
+
+# Delete directories we don't need
+for target in "${TARGETS[@]}"
+do
+  if [[ -d "${target}" ]] || [[ -f "${target}" ]]; then
+    rm -rf "${target}";
+  fi
+done
diff --git a/contrib/containers/ci/Dockerfile b/contrib/containers/ci/Dockerfile
index d642ffc3984d9..cdce794c5731a 100644
--- a/contrib/containers/ci/Dockerfile
+++ b/contrib/containers/ci/Dockerfile
@@ -184,6 +184,7 @@ RUN apt-get update && apt-get install $APT_ARGS \
     wine-stable \
     wine64 \
     zip \
+    zstd \
     && rm -rf /var/lib/apt/lists/*
 
 # Make sure std::thread and friends is available