diff --git a/services/tunnelbroker/src/Constants.h b/services/tunnelbroker/src/Constants.h
--- a/services/tunnelbroker/src/Constants.h
+++ b/services/tunnelbroker/src/Constants.h
@@ -48,10 +48,12 @@
     "}$");
 
 // Config
-const std::string CONFIG_FILE_PATH =
-    std::string(std::getenv("HOME")) + "/tunnelbroker/tunnelbroker.ini";
-const std::string DEV_CONFIG_FILE_PATH =
-    std::string(std::getenv("HOME")) + "/tunnelbroker/tunnelbroker-dev.ini";
+const std::string CONFIG_FILE_DIRECTORY_ENV_VARIABLE =
+    "TUNNELBROKER_CONFIG_FILE_DIRECTORY";
+const std::string DEFAULT_CONFIG_FILE_DIRECTORY =
+    std::string(std::getenv("HOME")) + "/tunnelbroker";
+const std::string CONFIG_FILE_NAME = "tunnelbroker.ini";
+const std::string SANDBOX_CONFIG_FILE_NAME = "tunnelbroker-sandbox.ini";
 
 // DeliveryBroker
 const size_t DELIVERY_BROKER_MAX_QUEUE_SIZE = 100;
diff --git a/services/tunnelbroker/src/Tools/ConfigManager.cpp b/services/tunnelbroker/src/Tools/ConfigManager.cpp
--- a/services/tunnelbroker/src/Tools/ConfigManager.cpp
+++ b/services/tunnelbroker/src/Tools/ConfigManager.cpp
@@ -30,10 +30,17 @@
 }
 
 void ConfigManager::load() {
+  char const *configFileDirectoryFromEnvironment =
+      std::getenv(CONFIG_FILE_DIRECTORY_ENV_VARIABLE.c_str());
+  std::string configFilePath = DEFAULT_CONFIG_FILE_DIRECTORY;
+
+  if (configFileDirectoryFromEnvironment != nullptr) {
+    configFilePath = std::string{configFileDirectoryFromEnvironment};
+  }
   if (comm::network::tools::isSandbox()) {
-    loadConfigFile(comm::network::DEV_CONFIG_FILE_PATH);
+    loadConfigFile(configFilePath + "/" + SANDBOX_CONFIG_FILE_NAME);
   } else {
-    loadConfigFile(comm::network::CONFIG_FILE_PATH);
+    loadConfigFile(configFilePath + "/" + CONFIG_FILE_NAME);
   }
 }
 
diff --git a/services/tunnelbroker/tunnelbroker-dev.ini b/services/tunnelbroker/tunnelbroker-sandbox.ini
rename from services/tunnelbroker/tunnelbroker-dev.ini
rename to services/tunnelbroker/tunnelbroker-sandbox.ini