diff --git a/.env.sample b/.env.sample
deleted file mode 100644
index 8627d06..0000000
--- a/.env.sample
+++ /dev/null
@@ -1,5 +0,0 @@
-export TEAM_ID=$(cs list workspaces | grep $WORKSPACE_ID | awk '{print $2}')
-export UV_PYTHON_INSTALL_DIR=/home/user/app/.codesphere-internal/.uv-python-install
-export UV_PYTHON_BIN_DIR=/home/user/app/.codesphere-internal/.uv-python-bin
-export UV_CACHE_DIR=/home/user/app/.codesphere-internal/.uv
-export UV_PYTHON_CACHE_DIR=/home/user/app/.codesphere-internal/.uv-python
\ No newline at end of file
diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index 09138ab..c6558c4 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -18,7 +18,6 @@ codesphere-deploy:
     PLAN: 'Micro'
     ON_DEMAND: 'false'
     ENV: |
-      CS_TOKEN=$CODESPHERE_TOKEN
   environment:
     name: 'Preview Deployment Python MR_$CI_MERGE_REQUEST_IID'
     on_stop: codesphere-teardown
diff --git a/README.md b/README.md
index bfcc8f0..76fe946 100644
--- a/README.md
+++ b/README.md
@@ -1,6 +1,6 @@
 # python-demo test
 
-before running any stage you will need to set up a 'CS_TOKEN' env var containing an Codesphere API key.
+This is a Python demo application with a Streamlit frontend and FastAPI backend.
 
 # open backend api docs
 
diff --git a/backend/requirements.txt b/backend/requirements.txt
new file mode 100644
index 0000000..aca0a52
--- /dev/null
+++ b/backend/requirements.txt
@@ -0,0 +1,10 @@
+# Main dependencies
+fastapi[all]>=0.115.12
+numpy>=2.3.0
+pandas>=2.3.0
+pytest-cov>=6.1.1
+pytest-profiling>=1.8.1
+
+# Dev dependencies (for testing and security checks)
+bandit>=1.8.3
+pytest>=8.4.0
diff --git a/ci.DEV.yml b/ci.DEV.yml
new file mode 100644
index 0000000..ed6fa2e
--- /dev/null
+++ b/ci.DEV.yml
@@ -0,0 +1,52 @@
+schemaVersion: v0.2
+prepare:
+  steps:
+    - name: install frontend dependencies
+      command: cd frontend && virtualenv .venv && .venv/bin/pip install -r requirements.txt
+    - name: install backend dependencies
+      command: cd backend && virtualenv .venv && .venv/bin/pip install -r requirements.txt
+test:
+  steps:
+    - name: test frontend
+      command: cd frontend && .venv/bin/python -m pytest
+    - name: test backend
+      command: cd backend && .venv/bin/python -m pytest
+    - name: security check frontend
+      command: 'cd frontend && .venv/bin/python -m bandit -r . -c pyproject.toml
+        --format=custom --msg-template "{abspath}:{line}: {test_id}[{severity}]:
+        {msg}" -o bandit-results.txt'
+    - name: security check backend
+      command: 'cd backend && .venv/bin/python -m bandit -r . -c pyproject.toml
+        --format=custom --msg-template "{abspath}:{line}: {test_id}[{severity}]:
+        {msg}" -o bandit-results.txt'
+run:
+  frontend:
+    steps:
+      - name: start frontend application
+        command: cd frontend && .venv/bin/python -m streamlit run --server.address 0.0.0.0
+          --server.port 3000 main.py
+    plan: 20
+    replicas: 1
+    isPublic: true
+    network:
+      path: /
+      stripPath: false
+  backend:
+    steps:
+      - name: start backend application
+        command: cd backend && .venv/bin/python -m uvicorn app:app --reload --port 3000
+          --host 0.0.0.0
+    plan: 20
+    replicas: 1
+    isPublic: false
+  api-docs:
+    steps:
+      - name: deploy docs
+        command: cd backend && .venv/bin/python -m uvicorn doc:app_docs --host 0.0.0.0
+          --port 3000
+    plan: 20
+    replicas: 1
+    isPublic: true
+    network:
+      path: /api
+      stripPath: false
\ No newline at end of file
diff --git a/ci.PROD.yml b/ci.PROD.yml
new file mode 100644
index 0000000..3af153b
--- /dev/null
+++ b/ci.PROD.yml
@@ -0,0 +1,45 @@
+schemaVersion: v0.2
+prepare:
+  steps:
+    - name: install frontend dependencies
+      command: cd frontend && virtualenv .venv && .venv/bin/pip install -r requirements.txt
+    - name: install backend dependencies  
+      command: cd backend && virtualenv .venv && .venv/bin/pip install -r requirements.txt
+    - name: optimize python bytecode
+      command: cd frontend && .venv/bin/python -m compileall -b .
+    - name: optimize backend bytecode
+      command: cd backend && .venv/bin/python -m compileall -b .
+test:
+  steps: []
+run:
+  frontend:
+    steps:
+      - name: start frontend application
+        command: "cd frontend && .venv/bin/python -m streamlit run main.py --server.headless true
+          --server.address 0.0.0.0 --server.port 3000 --browser.gatherUsageStats
+          false --logger.level warning --server.enableCORS false --server.enableXsrfProtection true"
+    plan: 8
+    replicas: 2
+    isPublic: true
+    network:
+      path: /
+      stripPath: false
+  backend:
+    steps:
+      - name: start backend application
+        command: cd backend && .venv/bin/python -m uvicorn app:app --port 3000 --host 0.0.0.0
+          --workers 4 --worker-class uvicorn.workers.UvicornWorker --access-log --no-use-colors
+    plan: 8
+    replicas: 2
+    isPublic: false
+  api-docs:
+    steps:
+      - name: deploy docs
+        command: cd backend && .venv/bin/python -m uvicorn doc:app_docs --host 0.0.0.0 --port 3000
+          --workers 2 --access-log --no-use-colors
+    plan: 8
+    replicas: 1
+    isPublic: true
+    network:
+      path: /api
+      stripPath: false
\ No newline at end of file
diff --git a/ci.QA.yml b/ci.QA.yml
new file mode 100644
index 0000000..6ff661d
--- /dev/null
+++ b/ci.QA.yml
@@ -0,0 +1,41 @@
+schemaVersion: v0.2
+prepare:
+  steps:
+    - name: install frontend dependencies
+      command: cd frontend && virtualenv .venv && .venv/bin/pip install -r requirements.txt
+    - name: install backend dependencies
+      command: cd backend && virtualenv .venv && .venv/bin/pip install -r requirements.txt
+test:
+  steps: []
+run:
+  frontend:
+    steps:
+      - name: start frontend application
+        command: "cd frontend && .venv/bin/python -m streamlit run main.py
+          --server.headless true --server.address 0.0.0.0 --server.port 3000
+          --browser.gatherUsageStats false --logger.level info"
+    plan: 20
+    replicas: 1
+    isPublic: true
+    network:
+      path: /
+      stripPath: false
+  backend:
+    steps:
+      - name: start backend application
+        command: cd backend && .venv/bin/python -m uvicorn app:app --port 3000 --host
+          0.0.0.0 --workers 2
+    plan: 20
+    replicas: 1
+    isPublic: false
+  api-docs:
+    steps:
+      - name: deploy docs
+        command: cd backend && .venv/bin/python -m uvicorn doc:app_docs --host 0.0.0.0
+          --port 3000 --workers 2
+    plan: 20
+    replicas: 1
+    isPublic: true
+    network:
+      path: /api
+      stripPath: false
diff --git a/ci.Qa.yml b/ci.Qa.yml
deleted file mode 100644
index 3d0f976..0000000
--- a/ci.Qa.yml
+++ /dev/null
@@ -1,59 +0,0 @@
-schemaVersion: v0.2
-prepare:
-  steps:
-    - name: install Codesphere cli tool
-      command: mkdir -p $HOME/.local/bin && wget -qO-
-        'https://api.github.com/repos/codesphere-cloud/cs-go/releases/latest' |
-        grep linux_amd64 | grep browser_download_url | sed s/.*https/https/ |
-        sed s/\".*$// | xargs wget -O $HOME/.local/bin/cs && chmod +x
-        $HOME/.local/bin/cs
-    - name: install uv standalone version
-      command: curl -LsSf https://astral.sh/uv/install.sh | env
-        UV_INSTALL_DIR="$HOME/app" sh && chmod +x $HOME/app/uv
-    - command: cp -n .env.sample .env
-    - name: "set ev vars "
-      command: . .env && cs set-env -w $WORKSPACE_ID -t $TEAM_ID --env-var
-        UV_PYTHON_INSTALL_DIR=$PWD/.codesphere-internal/.uv-python-install
-        --env-var UV_PYTHON_BIN_DIR=$PWD/.codesphere-internal/.uv-python-bin
-        --env-var UV_CACHE_DIR=$PWD/.codesphere-internal/.uv --env-var
-        UV_PYTHON_CACHE_DIR=$PWD/.codesphere-internal/.uv-python
-    - name: install frontend environment
-      command: . ./env && cd frontend && { [ ! -d ".venv" ] && uv venv; uv sync
-        --no-dev; }
-    - name: install backend environment
-      command: . ./env && cd backend && { [ ! -d ".venv" ] && uv venv; uv sync
-        --no-dev; }
-test:
-  steps: []
-run:
-  frontend:
-    steps:
-      - name: start frontend application
-        command: ". ./env && cd frontend && uv run streamlit run main.py
-          --server.headless true --server.address 0.0.0.0 --server.port 3000
-          --browser.gatherUsageStats false --logger.level info "
-    plan: 20
-    replicas: 1
-    isPublic: true
-    network:
-      path: /
-      stripPath: false
-  backend:
-    steps:
-      - name: start backend application
-        command: . ./env && cd backend && uv run uvicorn app:app --port 3000 --host
-          0.0.0.0 --workers 2
-    plan: 20
-    replicas: 1
-    isPublic: false
-  api-docs:
-    steps:
-      - name: deploy docs
-        command: . ./env && cd backend && uv run uvicorn doc:app_docs --host 0.0.0.0
-          --port 3000 --workers 2
-    plan: 20
-    replicas: 1
-    isPublic: true
-    network:
-      path: /api
-      stripPath: false
diff --git a/ci.dev.yml b/ci.dev.yml
deleted file mode 100644
index b82cf69..0000000
--- a/ci.dev.yml
+++ /dev/null
@@ -1,69 +0,0 @@
-schemaVersion: v0.2
-prepare:
-  steps:
-    - name: install Codesphere cli tool
-      command: mkdir -p $HOME/.local/bin && wget -qO-
-        'https://api.github.com/repos/codesphere-cloud/cs-go/releases/latest' |
-        grep linux_amd64 | grep browser_download_url | sed s/.*https/https/ |
-        sed s/\".*$// | xargs wget -O $HOME/.local/bin/cs && chmod +x
-        $HOME/.local/bin/cs
-    - name: install uv standalone version
-      command: curl -LsSf https://astral.sh/uv/install.sh | env
-        UV_INSTALL_DIR="$HOME/app" sh && chmod +x $HOME/app/uv
-    - name: copy template .env file
-      command: cp -n .env.sample .env
-    - name: "set ev vars "
-      command: . .env && cs set-env -w $WORKSPACE_ID -t $TEAM_ID --env-var
-        UV_PYTHON_INSTALL_DIR=$PWD/.codesphere-internal/.uv-python-install
-        --env-var UV_PYTHON_BIN_DIR=$PWD/.codesphere-internal/.uv-python-bin
-        --env-var UV_CACHE_DIR=$PWD/.codesphere-internal/.uv --env-var
-        UV_PYTHON_CACHE_DIR=$PWD/.codesphere-internal/.uv-python
-    - name: install frontend environment
-      command: . ./env && cd frontend && { [ ! -d ".venv" ] && uv venv; uv sync; }
-    - name: install backend environment
-      command: . ./env && cd backend && { [ ! -d ".venv" ] && uv venv; uv sync; }
-test:
-  steps:
-    - name: test frontend
-      command: . ./env && cd frontend && uv run pytest
-    - name: test backend
-      command: ". ./env && cd backend &&  uv run pytest "
-    - name: security check frontend
-      command: '. ./env && cd frontend && uv run bandit -r . -c pyproject.toml
-        --format=custom --msg-template "{abspath}:{line}: {test_id}[{severity}]:
-        {msg}" -o bandit-results.txt'
-    - name: security check backend
-      command: '. ./env && cd backend && uv run bandit -r . -c pyproject.toml
-        --format=custom --msg-template "{abspath}:{line}: {test_id}[{severity}]:
-        {msg}" -o bandit-results.txt'
-run:
-  frontend:
-    steps:
-      - name: start frontend application
-        command: . ./env && cd frontend && uv run streamlit run --server.address 0.0.0.0
-          --server.port 3000 main.py
-    plan: 20
-    replicas: 1
-    isPublic: true
-    network:
-      path: /
-      stripPath: false
-  backend:
-    steps:
-      - name: start backend application
-        command: . ./env && cd backend && uv run uvicorn app:app --reload --port 3000
-          --host 0.0.0.0
-    plan: 20
-    replicas: 1
-    isPublic: false
-  api-docs:
-    steps:
-      - name: deploy docs
-        command: . ./env && cd backend && uv run uvicorn doc:app_docs --host 0.0.0.0
-          --port 3000
-    plan: 20
-    replicas: 1
-    isPublic: true
-    network:
-      path: /api
-      stripPath: false
diff --git a/ci.prod.yml b/ci.prod.yml
deleted file mode 100644
index 2f51ae9..0000000
--- a/ci.prod.yml
+++ /dev/null
@@ -1,55 +0,0 @@
-schemaVersion: v0.2
-prepare:
-  steps:
-    - name: install Codesphere cli tool
-      command: mkdir -p $HOME/.local/bin && wget -qO-
-        'https://api.github.com/repos/codesphere-cloud/cs-go/releases/latest' |
-        grep linux_amd64 | grep browser_download_url | sed s/.*https/https/ |
-        sed s/\".*$// | xargs wget -O $HOME/.local/bin/cs && chmod +x
-        $HOME/.local/bin/cs
-    - name: install uv standalone version
-      command: nix-env -iA nixpkgs.uv
-    - name: "set ev vars "
-      command: . .env && cs set-env -w $WORKSPACE_ID -t $TEAM_ID --env-var
-        UV_PYTHON_INSTALL_DIR=$PWD/.codesphere-internal/.uv-python-install
-        --env-var UV_PYTHON_BIN_DIR=$PWD/.codesphere-internal/.uv-python-bin
-        --env-var UV_CACHE_DIR=$PWD/.codesphere-internal/.uv --env-var
-        UV_PYTHON_CACHE_DIR=$PWD/.codesphere-internal/.uv-python
-    - name: install frontend environment
-      command: cd frontend && { [ ! -d ".venv" ] && uv venv; uv sync --no-dev; }
-    - name: install backend environment
-      command: cd backend && { [ ! -d ".venv" ] && uv venv; uv sync --no-dev; }
-test:
-  steps: []
-run:
-  frontend:
-    steps:
-      - name: start frontend application
-        command: "cd frontend && uv run streamlit run main.py --server.headless true
-          --server.address 0.0.0.0 --server.port 3000 --browser.gatherUsageStats
-          false --logger.level info "
-    plan: 8
-    replicas: 1
-    isPublic: true
-    network:
-      path: /
-      stripPath: false
-  backend:
-    steps:
-      - name: start backend application
-        command: cd backend && uv run uvicorn app:app --port 3000 --host 0.0.0.0
-          --workers 2
-    plan: 8
-    replicas: 1
-    isPublic: false
-  api-docs:
-    steps:
-      - name: deploy docs
-        command: cd backend && uv run uvicorn doc:app_docs --host 0.0.0.0 --port 3000
-          --workers 2
-    plan: 8
-    replicas: 1
-    isPublic: true
-    network:
-      path: /api
-      stripPath: false
diff --git a/ci.yml b/ci.yml
index 80289cc..1f5c590 100644
--- a/ci.yml
+++ b/ci.yml
@@ -1,31 +1,19 @@
 schemaVersion: v0.2
 prepare:
   steps:
-    - name: install Codesphere cli tool
-      command: mkdir -p $HOME/.local/bin && wget -qO-
-        'https://api.github.com/repos/codesphere-cloud/cs-go/releases/latest' |
-        grep linux_amd64 | grep browser_download_url | sed s/.*https/https/ |
-        sed s/\".*$// | xargs wget -O $HOME/.local/bin/cs && chmod +x
-        $HOME/.local/bin/cs
-    - name: install uv standalone version
-      command: curl -LsSf https://astral.sh/uv/install.sh | env
-        UV_INSTALL_DIR="$HOME/app" sh && chmod +x $HOME/app/uv
-    - command: cp -n .env.sample .env
-    - name: install frontend environment
-      command: . ./env && cd frontend && { [ ! -d ".venv" ] && uv venv; uv sync
-        --no-dev; }
-    - name: install backend environment
-      command: . ./env && cd backend && { [ ! -d ".venv" ] && uv venv; uv sync
-        --no-dev; }
+    - name: install frontend dependencies
+      command: cd frontend && virtualenv .venv && .venv/bin/pip install -r requirements.txt
+    - name: install backend dependencies
+      command: cd backend && virtualenv .venv && .venv/bin/pip install -r requirements.txt
 test:
   steps: []
 run:
   frontend:
     steps:
       - name: start frontend application
-        command: ". ./env && cd frontend && uv run streamlit run main.py
+        command: "cd frontend && .venv/bin/python -m streamlit run main.py
           --server.headless true --server.address 0.0.0.0 --server.port 3000
-          --browser.gatherUsageStats false --logger.level info "
+          --browser.gatherUsageStats false --logger.level info"
     plan: 8
     replicas: 1
     isPublic: true
@@ -35,7 +23,7 @@ run:
   backend:
     steps:
       - name: start backend application
-        command: . ./env && cd backend && uv run uvicorn app:app --port 3000 --host
+        command: cd backend && .venv/bin/python -m uvicorn app:app --port 3000 --host
           0.0.0.0 --workers 2
     plan: 8
     replicas: 1
@@ -43,7 +31,7 @@ run:
   api-docs:
     steps:
       - name: deploy docs
-        command: . ./env && cd backend && uv run uvicorn doc:app_docs --host 0.0.0.0
+        command: cd backend && .venv/bin/python -m uvicorn doc:app_docs --host 0.0.0.0
           --port 3000 --workers 2
     plan: 8
     replicas: 1
diff --git a/frontend/requirements.txt b/frontend/requirements.txt
new file mode 100644
index 0000000..2f6d724
--- /dev/null
+++ b/frontend/requirements.txt
@@ -0,0 +1,12 @@
+# Main dependencies
+numpy>=2.2.6
+pandas>=2.3.0
+plotly>=6.1.2
+pytest-cov>=6.1.1
+pytest-profiling>=1.8.1
+requests>=2.32.4
+streamlit>=1.45.1
+
+# Dev dependencies (for testing and security checks)
+bandit>=1.8.3
+pytest>=8.4.0