The person behind it
He built the tool
he needed when he
was on the street.
Aaron Rosa is a pastor-in-process, software engineer, and mercy ministry practitioner in Anne Arundel County. He founded The Hood Shepherd and built GospelGraph out of three years of incarnational ministry in public housing — before he had a framework for any of it.
Leadership
Where this started
Harbor House came
before any of this.
Aaron spent three years doing mercy ministry in public housing and among the unhoused in Anne Arundel County through Harbor House — before he wrote a single methodology document, before he ran a single Census query, before GospelGraph existed as anything other than a frustration.
The frustration was specific: he kept watching pastors and church planters walk into neighborhoods they had not read. Not bad people. Not lazy people. People who genuinely wanted to be useful and did not have anything to orient them. They were making real decisions — where to plant, where to invest three years of their lives — on instinct and a drive-by read.
He built the tool because he had seen what it cost to not have one.
Formation
An odd résumé
for this kind of work.
Naval Academy graduate. Production software engineer at Northrop Grumman. Master of Journalism from the University of Maryland. M.Div. from Westminster Theological Seminary, where Harvie Conn's biblical urban theology finally gave him a framework for what he had been doing on the street for three years.
None of that was planned as a sequence. It is just what happened. The military taught him how to operate under pressure and take institutional work seriously. The newsroom trained him not to publish until he actually understood what he was looking at. The engineering job taught him to build things rather than just describe them. Westminster gave him the theological load-bearing walls.
He did not hire anyone to build GospelGraph. He built it himself, over nights and weekends, while the rest of his life was happening. That is worth saying plainly — because the tool reflects it. It is not a product designed by a team optimizing for a market. It is something built by someone who needed it.
Sent and accountable
He's not operating
independently.
That matters.
Aaron is a missionary sent by Faith Community Church to Anne Arundel County and a local missions partner of Bay Area Community Church in Annapolis. He's in the ordination process within a Reformed denomination.
This is not window dressing. A lot of ministry tech projects float free of any real ecclesial accountability — they run on vision statements and advisory boards and the founder's personal credibility. The Hood Shepherd has elders. It has a sending church. It has people who know Aaron and can ask hard questions about whether the work is actually serving the mission it claims to serve.
The data serves the pastor. The pastor serves the block. If the tool ever starts reversing that order, someone should say so — and there are people in Aaron's life whose job it is to do exactly that.
The conviction behind it
Presence precedes program.
GospelGraph exists because Aaron believes the church's most common failure in hard neighborhoods is not lack of resources or lack of desire — it is lack of knowledge. You cannot love your neighbor well if you have not yet figured out who your neighbor is and what their actual life looks like.
Harvie Conn spent his career making this argument from Scripture: shalom is not only a spiritual category. Its absence is visible. Shortened lifespans, fractured households, streets people do not feel safe on — these are not just social problems. They are diagnostic. The Gospel is meant to touch all of it, and where it has, you can see it over time. That is the theological engine underneath the methodology.
The tool is a servant of that conviction, not the conviction itself. You still have to go.
Get in touch
He reads his email.
If you're a denominational leader thinking about licensing, a church planter trying to make sense of a specific neighborhood, or a journalist working on something in this space — reach out. He responds to everything eventually, and faster when the question is specific.
Support the Mission
The harvest is plentiful.
The laborers are few.
The Hood Shepherd is entirely donor-funded. Your tax-deductible gift sustains the neighborhood intelligence infrastructure that equips church planters and mercy workers to go where the Gospel is needed most.