@paul-murithi

Paul Murithi Kirera

@paul-murithiMeru, KenyaJoined October 2025

BSc IT Student • Aspiring AI & Backend Engineer

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Paul Murithi Kirera's blogs

From Zero to Flask: My Web Dev Kickofffrom-zero-to-flask.hashnode.dev1 post Week 1: Beyond Docker Composebuilding-a-5-service-local-appliance.hashnode.dev1 post Week 2: Migration Engine Setupbuilding-a-production-migration-system.hashnode.dev1 post Week 3: The Ingestion Layerweek-3-the-ingestion-layer.hashnode.dev1 post Week 4: The Art of Tracethe-art-of-trace.hashnode.dev1 post

Sim-Pesa Is Live: A 16-Week Build Log, A Finished Product, and Everything In Between

Sim-Pesa Build Log — Week 16 of 16 Sim-Pesa is live. Sixteen weeks ago, I could not log into the M-Pesa developer portal. Today, I shipped a local-first transactional appliance that simulates the ent

May 12 · 8 min readweek-16.hashnode.dev

The Onboarding Wizard: Docker, NGINX, and the localhost Trap

Sim-Pesa Build Log — Week 15 of 16 Welcome to another build log of Sim-Pesa. This is a project I've been building for 15 weeks now to level up my software development skills. The project is aimed at

May 3 · 13 min readweek-15.hashnode.dev

Building the Virtual Smartphone: Redis Pub/Sub and the Human-in-the-Loop Problem

Sim-Pesa Build Log — Week 14 of 16 Welcome to another build log of Sim-Pesa. If you're new here, this is a project I've been building for 14 weeks now with the aim of leveling up my software developm

Apr 26 · 13 min readweek-14.hashnode.dev

Simulating the Circle of Trust: Security Mocking Without the Overhead

Sim-Pesa Build Log — Week 12 of 16 Welcome to another build log of Sim-Pesa. If you're new here, Sim-Pesa is a project I've been building to level up my software development skills. I've been writing

Apr 10 · 10 min readweek-12.hashnode.dev

Building Resilient Webhooks: Exponential Backoff and the Art of Retry Logic

Sim-Pesa Build Log — Week 11 of 16 Welcome to another build log of Sim-Pesa. If you're new here, Sim-Pesa is a project I'm building to level up my backend development skills. It's a transactional sta

Apr 2 · 10 min readweek-11.hashnode.dev

Paul Murithi Kirera

About

Available for

Paul Murithi Kirera's blogs

Sim-Pesa Is Live: A 16-Week Build Log, A Finished Product, and Everything In Between

The Onboarding Wizard: Docker, NGINX, and the localhost Trap

Building the Virtual Smartphone: Redis Pub/Sub and the Human-in-the-Loop Problem

Simulating the Circle of Trust: Security Mocking Without the Overhead

Building Resilient Webhooks: Exponential Backoff and the Art of Retry Logic

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Paul Murithi Kirera

About

Available for

Paul Murithi Kirera's blogs

Sim-Pesa Is Live: A 16-Week Build Log, A Finished Product, and Everything In Between

The Onboarding Wizard: Docker, NGINX, and the localhost Trap

Building the Virtual Smartphone: Redis Pub/Sub and the Human-in-the-Loop Problem

Simulating the Circle of Trust: Security Mocking Without the Overhead

Building Resilient Webhooks: Exponential Backoff and the Art of Retry Logic