Create your own service using Upstart.

ess_upstart.conf

#!upstart
description "ESS Server"
author      "Aayush Sarva, <aayush@socialcops.org>"

env DIRECTORY=/home/dev/electoralsearch_server/

# Specify Runlevel events (Refer [1])
# When to start the service
start on runlevel [2345]

# When to stop the service
stop on runlevel [06]

# Process
script 
	export HOME="/root"

	cd $DIRECTORY	
	# Run Server
	exec sudo /usr/bin/node /home/dev/electoralsearch_server/server-side.js

end script


## sudo initctl reload-configuration
## sudo initctl list | grep testservice
## sudo start testservice 
## sudo stop testservice

## Developer Notes:

# [1] 	Background on Runlevels:
# 		Runlevels define modes of system operation. 
# 		Runlevels  0,  1  and  6  are reserved.  Runlevel 0 is used to halt the
# 		system and 6 to reboot the system.  Runlevel 1 is  used  to  bring  the
# 		system  back down into single-user mode, after which the runlevel will be S.

# [2] 	When you initially copy a new conf file into the /etc/init folder you need to call : initctl reload-configuration
# 	  	By this your upstart should be properly registered.

# References:
# A) http://upstart.ubuntu.com/cookbook
# B) https://help.ubuntu.com/community/UbuntuBootupHowto
# C) http://upstart.ubuntu.com/getting-started.html


#First, you can check that your job is actually known to upstart:
#sudo initctl list | grep your_job_name
#If it's not found, you can try reloading the configuration and then re-checking:
#sudo initctl reload-configuration
#sudo start your_job_name