I'm an IT infrastructure and security specialist with 15 years in network administration and security engineering.
I also design, build and run production web applications end to end — I write them, deploy them, and keep them working for real users.
I build under Simpliflex Systems Ltd.
Education software that works with no internet connection, built for real learners.
| Project | What it is | Scale |
|---|---|---|
| Cybersecurity Mastery | Offline cybersecurity training, aligned to Security+ / CySA+ / CISSP | 15 tracks · 118 modules · 4,140 questions |
| Simpliflex Learn | UK National Curriculum platform, Key Stage 1 to GCSE | 515 topics · 32,678 questions |
| Simpliflex Learn NG | Nigerian curriculum edition with a JAMB exam simulator | 367 topics · 9,839 questions |
| Career Learning Paths | Cloud, Cyber, Software, DevOps, Data and AI — foundations to project work | 18 tracks |
| Curious Kids Encyclopedia | Illustrated offline encyclopedia for ages 9–12 | ~350 articles |
Built in: per-child accounts · parent dashboards · printable worksheets · offline text-to-speech · subscription billing
Probabilistic match-outcome models across three sports. The interesting part is not the prediction — it is proving the confidence attached to it is honest.
| Sport | Coverage | Approach |
|---|---|---|
| Football | 16 leagues, plus Big-5 season models | Poisson and Dixon–Coles scorelines, expected-goals projection |
| Basketball | 427-league catalogue, measured across 325 | Rating systems with pace and form adjustment, Monte Carlo simulation |
| Tennis | ATP singles | Surface-weighted Elo |
How they are evaluated
- Calibration over accuracy. A model that says "70%" must be right about 70% of the time.
- Scored on Brier score, log-loss and expected calibration error, not on hit rate alone.
- Isotonic recalibration where raw confidence drifts. On the basketball engine this cut expected calibration error from 0.050 to 0.009 across 325 leagues.
- Walk-forward backtesting, so a model is only ever judged on matches it could not have seen.
| Project | What it is |
|---|---|
| Simpliflex Systems | Company sites and brand assets for Simpliflex Systems Ltd (RC-9336897) |
| AdRunna | AI-powered radio advertising marketplace for Nigeria — 300+ stations, smart media buying, live rates and availability. Early-access waitlist open. |
| QS Pro Manager | Quantity-surveying SaaS built for a client — React, Express and Prisma |
🔍 I test what the user actually touches. A content check proving a question has a valid answer key tells you nothing about whether the screen can draw it. I learned that the hard way, and now gate the render path too.
🧪 Every new check gets proved. I revert the fix and confirm the test fails before I trust it. A gate that cannot fail is not a gate.
🚦 Automated checks before every ship. Simpliflex Learn runs 26 of them: content validation, navigation, authentication, marking, accessibility and read-aloud coverage.
👥 Real users set the priorities. The last release came straight from a learner's message about her quiz skipping questions.
Building with
Currently deepening — Kubernetes · Terraform · AWS architecture · applied cybersecurity in a home lab
Happy to talk network and security engineering, education software, or shipping small products solo.
Pronouns: He/Him