diff --git a/.gitignore b/.gitignore
index fd798d2..d82e68e 100644
--- a/.gitignore
+++ b/.gitignore
@@ -47,6 +47,7 @@ Thumbs.db
 *.truststore
 secrets/
 credentials/
+.atl
 
 # Application configs
 application-local.yml
diff --git a/scripts/dev-start.sh b/scripts/dev-start.sh
new file mode 100755
index 0000000..67f5f56
--- /dev/null
+++ b/scripts/dev-start.sh
@@ -0,0 +1,42 @@
+#!/bin/bash
+# ================================================================
+# dev-start.sh — Start local development environment
+# Usage: ./script/dev-start.sh
+# ================================================================
+
+# Move to project root regardless of where script is called from
+cd "$(dirname "$0")/.." || exit 1
+
+# 1. Load .env FIRST — Docker Compose needs these variables to start
+# set -a exports ALL variables defined after it
+# source .env reads the file
+# set +a stops auto-exporting
+if [ ! -f .env ]; then
+  echo "ERROR: .env file not found. Copy .env.example and fill in your values."
+  exit 1
+fi
+set -a && source .env && set +a
+echo "Environment variables loaded."
+
+# 2. Start PostgreSQL container
+echo "Starting PostgreSQL..."
+docker compose up -d postgres
+
+# 3. Wait for PostgreSQL to be healthy (uses healthcheck defined in docker-compose.yml)
+echo "Waiting for PostgreSQL to be ready..."
+until docker compose exec -T postgres pg_isready -U "$POSTGRES_USER" -d "$POSTGRES_DB" 2>/dev/null; do
+  sleep 1
+done
+echo "PostgreSQL is ready."
+
+# 4. Start Spring Boot with dev profile (background + PID)
+# WHY background + PID file: allows dev-stop.sh to kill only THIS process,
+# not any other Java project running on the same machine.
+echo "Starting Spring Boot on port ${SERVER_PORT:-8080}..."
+./mvnw spring-boot:run -Dspring-boot.run.profiles=dev &
+SPRING_PID=$!
+echo "$SPRING_PID" > .spring-boot.pid
+echo "Spring Boot PID: $SPRING_PID (saved to .spring-boot.pid)"
+
+# Wait keeps the script alive so you can see logs — Ctrl+C to stop
+wait
diff --git a/scripts/dev-stop.sh b/scripts/dev-stop.sh
new file mode 100755
index 0000000..beb7135
--- /dev/null
+++ b/scripts/dev-stop.sh
@@ -0,0 +1,28 @@
+#!/bin/bash
+# ================================================================
+# dev-stop.sh — Stop local development environment
+# Usage: ./script/dev-stop.sh
+# ================================================================
+
+cd "$(dirname "$0")/.." || exit 1
+
+# 1. Stop Spring Boot using PID file
+# WHY PID file instead of pkill: isolates THIS project — won't kill other Java apps.
+echo "Stopping Spring Boot..."
+if [ -f .spring-boot.pid ]; then
+  PID=$(cat .spring-boot.pid)
+  if kill "$PID" 2>/dev/null; then
+    echo "Spring Boot stopped (PID $PID)."
+  else
+    echo "Spring Boot process (PID $PID) was not running."
+  fi
+  rm -f .spring-boot.pid
+else
+  echo "No .spring-boot.pid found. Spring Boot may not be running."
+fi
+
+echo "Stopping PostgreSQL container..."
+docker compose stop postgres
+echo "PostgreSQL stopped."
+
+echo "Done. All services stopped."