Multi-Tenant Scheduling SaaS
OperationalSchema-isolated multi-tenant appointment platform with async WhatsApp reminders and M-Pesa payments.
- .NET
- PostgreSQL
- Redis
- Hangfire
- M-Pesa
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// SYSTEMS
Systems architecture
Flagship distributed systems I designed and built — with architecture diagrams, stack breakdowns, and honest metrics.
Notitia — Observability Platform
OperationalAutomated observability and PDF reporting service replacing manual spreadsheet workflows.
- C#
- .NET
- QuestPDF
- PostgreSQL
- SMTP
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Matatu Digital Signage
OperationalIoT edge signage for Kenyan matatu fleets — offline-first Raspberry Pi clients managed over MQTT.
- Raspberry Pi
- MQTT
- Python
- Node.js
- React
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// CASE STUDIES
In depth
Multi-Tenant Scheduling SaaS
A horizontally scalable booking platform serving multiple clinic tenants with WhatsApp reminders and M-Pesa payments.
.NET 8ASP.NET CoreC#PostgreSQLRedisEntity Framework CoreHangfire
Notitia — Observability & Reporting
An internal observability and PDF reporting platform that replaced ad-hoc spreadsheets with structured, automated reports.
C#.NET 8ASP.NET CorePostgreSQLDapperQuestPDFSMTP
Matatu Digital Signage
IoT-driven digital signage system for Kenyan public transit (matatu) fleets, delivering route and ad content over MQTT.
Raspberry PiPythonLinuxMQTTMosquitto BrokerNode.jsTypeScript