Before we come to the point of the role of engineers in NGOs who work for society, let me put forward, what is an NGO and how do they function.
An NGO or non-government organisation as what it is known as is a group of organisations or formed by individual volunteers to render help to people and communities in need through analysis and expertise. The work done through an NGO is without any government affiliation an try to bring the problems of citizens in front of the governments or people or department in charge. As working in an NGO is voluntary, it is normally termed as charity work and may not get too much remuneration but is done for self-satisfaction and passion and love towards humanity.
Now coming to your query about the scope of data analysis in NGOs, It is not only for engineers but people of any profession and background can work for an NGO and provide their expertise for the welfare of people and society. There are many NGO's that collect data and use for helping people like NGO looking after the safety of women, can collect data of them and monitor them through special app or system by tracking their mobile phone and helping them when they are in need.
Many Non-Governmental Organizations (NGOs) gathers data in large quantity through surveys, participatory methods or interview but are not able to capitalise the data due to ineffective analysis, sharing and management of these data. These data can be of vital importance if they are organised, handled and controlled and collaborated with concern department or government for proper action. Thus a data analyst engineer can use his expertise to analyze the collected data, compute the output and result, circulate the results of their data collection, etc which will be of mass importance to people, society and government thus fill in data gaps.
There are many NGOs that directly recruit graduates or engineers for their work and they are:
a) Professional Assistance for Development Action (PRADAN) - http://www.pradan.net
b)Self-Reliant Initiatives through Joint Action (SRIJAN) - http://srijanindia.org
c)Humanitarian Aid International(HAI) - https://hai-india.org
“The most important thing in life is to learn how to give out love, and to let it come in." — Morrie Schwartz