I build the piece that is missing from the systems you already run.

I’m David Bentley, a systems engineer. You speak to me, and I do the work. On new client builds, Orietta checks the agreed facts and customer journeys before handover.

See the work Course enquiries, made clearer

Builds: David Bentley. Scope, build and handover. Your one point of contact.
Checks: Orietta Trebejo. Project manager & reviewer. Agreed facts and customer journeys on new client builds. About the two of us

Some of my work.

The useful job is not always a tool. It might be course information that is easier to navigate, or an enquiry form that asks the right questions first time.

A regulation library designed to show its sources and review status.

For Sofema Aviation I built a Course Finder and a Training ROI Calculator. Both are publicly accessible. The Knowledge Hub is now live too: plain-English pages on aviation regulations, with source links and an interface for recording a reviewer’s checks.

LiveCourse Finder
LiveTraining ROI Calculator
LiveKnowledge Hub Screenshots captured on 5 October 2026, before launch.
OutcomesAdoption, booking gains, time savings and realised return have not been measured.

Read the case study

The Sofema Knowledge Hub home page: a search box with example searches, and four subjects to browse.

A Knowledge Hub page with a Verified badge. Its note reads: Verified by Sofema Aviation. Checked against the Sofema Aviation Verification Standard and EU law as at 7 August 2026.

The review screen: a statement from the hub page on the left, the EU regulation text on the right, differing words highlighted, and two buttons: Yes, same meaning, and No, something's different.

Email-platform recovery.

2,151profiles recovered and verified within the platform

For a UK wellness brand, I traced an account-wide suppression event dated 4 April 2025. It had gone unnoticed for fifteen months when I investigated it in July 2026.

Read the recovery account The free two-numbers check

Result: 2,151 profiles recovered and verified within the platform.
Scope: Platform status does not establish permission to contact anyone, delivered messages or sales. Sales impact was not measured.
Context: This is my account of one business, not an independent audit. The private records are not reproduced, and this case does not establish that another business has the same problem.
Timing: The fifteen months describes the account before the investigation, not an individual person’s messaging history.

Where AI is used, and where it is not.

AI helps with research and first drafts. People make the decisions and check the result. There are three situations, and the answer is different in each.

When your customer uses a finder, no AI runs.

The rules-based finders prepared for this letter campaign work from a table of routes in the visitor’s browser. Suggested routes refer to captured information from your pages. Where that information does not establish an answer, the finder asks your team to confirm. The same answers, with the same table, give the same result.

What it sees: the visitor’s answers, in their own browser. Nothing is sent to an AI service.

When we build from your public pages, AI drafts and people check.

AI tools read your published pages and draft the table. I review the build. On new client builds, Orietta checks the agreed facts against their sources and follows the customer journeys in scope.

What it sees: published course information and review instructions. See this on a real job

When a job needs your private data, AI runs on your side.

The project’s AI model runs on a computer you own or in an account you control. Your private business data is not sent to a model provider’s AI service. You control the access, and you can switch it off.

How: open-weight models, which are models whose files can be downloaded and run privately.

Checks find mistakes. They do not guarantee that every answer is correct. WhatsApp and email are separate services, outside any private setup. Control and handover

What would you like to make easier?

Tell me about one step. A sentence or two is enough. I reply within one working day, and I will not chase. Please leave out passwords, customer records, learner data and account access.

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