Wesley Sing
Founder of Appetite Technology. Builds human-approved AI agents in production.
Durban, South Africa
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Wesley Sing is the founder and director of Appetite Technology, a software and AI company in Durban, South Africa, trading since 2012. He started out in broadcast television and has been building software for 17 years. He leads engineering on Naya CRM, an agentic CRM in which an AI assistant researches leads and drafts outreach that a person approves before anything is sent. The same assistant powers Appetite Host, ChERP for churches, Newbi digital business cards and the Kwalifi learning platform. Wesley and Appetite Technology have delivered more than 240 projects, for clients including Coca-Cola, Toyota and Colgate-Palmolive.
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The privacy firewall: keeping pastoral notes away from the finance office with row-level security
A church needs one system for two very different kinds of sensitive data: who is in counselling, and who gave what. ChERP, a church management and accounting platform, keeps them apart with a privacy firewall enforced in the database itself, not in the screens. Finance roles never see pastoral records, not even as a locked folder, because Postgres row-level security filters every query before any data comes back. The same mechanism keeps every church isolated from every other church on the platform.
In 15 minutes: why access rules in the UI fail (reports, exports and APIs route around them), how row-level security policies close that gap, and how to do the same in .NET with Npgsql by setting the tenant and role per connection, instead of relying only on EF Core global query filters.
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