CarterTech Book a call

For owners of 20 to 200 person businesses

The internal systems your team keeps asking for, built in weeks not quarters.

Twelve years running IT and operations at Ministry of Sound group, with a long list of internal systems live in production. Fixed price, your business owns the code and docs, thirty day warranty.

Book a 20 minute call See past projects

Available for one new project

Stephen Carter, IT and operations lead at Ministry of Sound
Stephen Carter London · Independent technologist
Right now

Helping two London businesses ship internal tools. One slot open from August.

12
Years at Ministry of Sound
11
Internal systems live in production
£2.36M
In sales the ad platforms had missed
30 d
Post launch warranty on every project
What I build

Four kinds of system. All shipped end to end.

  1. Internal tools and dashboards

    One place for your team to see and run the business. Live numbers, real workflows, no spreadsheet chaos.

  2. Reporting and data

    Trustworthy numbers in one report, not five conflicting ones. Daily or weekly, in your inbox before the meeting.

  3. Connecting your systems

    Stop rekeying data between the tools you already pay for. Your CRM, finance and ops finally talking to each other.

  4. Automation and AI workflows

    Quietly handle the repetitive work that eats your week. The system reads, sorts and surfaces what needs you.

Selected work

Real systems running today inside one of London's longest standing music groups.

01

Marketing Attribution

2025 to 2026 · Ministry of Sound group

A music venue was reporting GBP 128k of revenue from its Meta, Google and TikTok ads, when the actual figure was GBP 2.36M. The ticketing system sat between the ad click and the purchase, so the ad platforms could only see a small fraction of the sales they had really driven.

Result. The reporting gap closed almost entirely. The venue can now see which ads are actually paying back, and shift spend towards them. The ad platforms in turn started showing the ads to the kind of people who buy.

Built with Python, Meta CAPI, Google Ads API, TikTok Events, Klaviyo, Azure Functions
02

Marketing Platform

2026 · Ministry of Sound group

Four marketing channels (Google, Meta, TikTok and Google Analytics) across four trading brands. To answer one question the marketing team had to open four logins. The setup running quietly behind the scenes was costing the business about GBP 200 a month, even when no one was using it.

Result. The team work from one screen instead of four. The bill dropped from about GBP 200 a month to about GBP 30, because the system only switches on when someone actually asks a question.

Built with Python, Azure SQL serverless, dlt, Claude API, Flask, Chart.js
03

IT Platform Monitor

2023 to 2026 · Ministry of Sound group

Five separate tools to check whether anything in the business was broken. The operations team were opening each one every morning and crossing their fingers that nothing had slipped through overnight.

Result. One screen the operations team checks first thing every day. In the first month it caught a website security certificate about to expire, a failing drive on the file server, and a forgotten Microsoft 365 licence quietly costing the business every month.

Built with Python, Flask, FortiGate API, M365 Graph, Cloudflare Tunnel, SQLite

Full project list and longer write-ups

How it works

No discovery deck. Just a quick call.

Tell me what is broken or missing in plain English. If it sounds like a fit, we get on a thirty minute call. No slides, no pitch, no obligation to go further.

Within forty eight hours you have a written scope, a fixed price and a delivery date. You decide from there. Most projects take two to eight weeks of build time and start from a few thousand pounds.

I build it, deliver it, and hand over the working system. Your business owns the code and the documentation from day one. I include thirty days of warranty after launch for bugs. After that, you can bring me back hourly for changes, or your team can run with the notes I leave behind.

Who you would be working with

One person on your project. Twelve years inside a real business.

I am Stephen Carter. I run IT and operations at the Ministry of Sound group, where I have built and now look after a long list of internal systems. I take outside work in the small windows my role allows. One client at a time, fixed scope, no agency layer, no junior subbed in.

Read the longer version

Get in touch

Got a system that needs building?

Tell me what is broken or missing. If it is a fit, I will send a fixed price and a start date. If it is not, I will say so.

Replies within one working day No forms, no sales follow up