diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index e34825f8b..c073062b1 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -102,47 +102,37 @@ backend lint:
   retry: 2
   interruptible: true
 
-uniworx:lib:uniworx:
+backend build:
   stage: build
+  cache:
+    - &stack-cache
+      key: default-stack
+      paths:
+        - .stack/
+        - .stack-work/
+
   script:
-    - xzcat frontend.nar.xz | nix-store --import
-    - nix -L build -o result ".#uniworx:lib:uniworx"
-    - nix-store --export $(nix-store -qR result) | xz -T0 -2 > uniworx:lib:uniworx.nar.xz
+    - "nix shell .#gnumake --command -- make CI=1 backend-build"
+    - cp $(stack path --dist-dir)/build/hlint/hlint bin/test-hlint
+    - cp $(stack path --dist-dir)/build/yesod/yesod bin/test-yesod
   before_script: *nix-before
   needs:
     - job: node modules # transitive
       artifacts: false
+    - job: frontend lint # transitive
+      artifacts: false
     - job: frontend build
       artifacts: true
+    - job: backend lint # pipeline performance
+      artifacts: false
   artifacts:
     paths:
-      - uniworx:lib:uniworx.nar.xz
-    name: "${CI_JOB_NAME}-${CI_COMMIT_SHORT_SHA}"
-    expire_in: "1 day"
-  retry: 2
-  interruptible: true
-
-uniworx:exe:uniworx:
-  stage: build
-  script:
-    - xzcat uniworx:lib:uniworx.nar.xz | nix-store --import
-    - nix -L build -o result ".#uniworx:exe:uniworx"
-    - nix-store --export $(nix-store -qR result) | xz -T0 -2 > uniworx:exe:uniworx.nar.xz
-  before_script: *nix-before
-  needs:
-    - job: node modules # transitive
-      artifacts: false
-    - job: frontend build # transitive
-      artifacts: false
-    - job: uniworx:lib:uniworx
-      artifacts: true
-  artifacts:
-    paths:
-      - uniworx:exe:uniworx.nar.xz
+      - bin/
     name: "${CI_JOB_NAME}-${CI_COMMIT_SHORT_SHA}"
     expire_in: "1 day"
   retry: 2
   interruptible: true
+  resource_group: ram
 
 uniworx:exe:uniworxdb:
   stage: build