Bernard Katamanso

Engineer & Pan-Africanist 🇬🇭

I build infrastructure and tools that shape how people create software. I work from Ghana, and I believe in engineering that is deliberate, precise, and built to last.

I write about what I build and what I learn along the way: systems architecture, developer tooling, infrastructure, and the engineering problems that keep me up at night. I build from Ghana because I believe world-class engineering is about depth and craft, not geography.

Projects

9 projects · 2 in progress

View all on GitHub

mNotify TS SDK

TypeScript SDK for mNotify messaging APIs.

Type-safe TypeScript SDK for mNotify's Bulk Messaging Solution API. Features SMS sending, contact management, templates, and webhook validation with automatic retries.

TypeScript Node.js API Design

Source

SESS CLI

Session-based Git CLI for issue-driven repos.

A session-based Git CLI that turns units of work into explicit sessions: start, pause, resume, and end with a branch push and PR handoff. Uses SQLite to track state and integrates with GitHub issues via gh.

Go SQLite CLI

Source

Valkey Collab

Real-time collaborative whiteboard.

Real-time collaborative whiteboard application built with FastAPI, Vue.js, and Valkey. WebSocket-based synchronization with persistent storage.

Python FastAPI Vue.js Valkey

Source

Listen to This Article

WordPress TTS plugin for accessibility.

A WordPress plugin that adds text-to-speech functionality to posts, letting visitors listen to article content via generated audio files. Supports audio generation, regeneration, and media library integration.

PHP WordPress JavaScript

Source

React Components

Feature-rich reusable React components.

Collection of feature-rich React components including accordion with search, navigation utilities, and other reusable UI patterns.

React TypeScript JavaScript

Source

PodPlay

Modern podcast player with glassmorphism UI.

A minimal podcast player web app with Apple-inspired glassmorphism design. Features RSS feed support, offline downloads, playback speed control, keyboard shortcuts, and a Python backend for serving audio downloads.

JavaScript Python HTML CSS

Source

Vesper

Time blocking for deep work.

A time blocking application designed to help structure your day, maintain focus, and achieve deep work states.

Source

SMSX

Bulk SMS platform with scheduling.

Comprehensive messaging application with bulk SMS capabilities, intelligent scheduling, automated reminders, and analytics dashboard.

TypeScript Node.js React Hono Drizzle ORM

Source

Text Editor

Desktop text editor in Java.

A desktop text editor application built with Java and Maven, featuring core text editing functionality.

Java Maven

Source

3 featured · 2 in progress

Technical Writing

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May 12, 2026 6 min read

The Object in the Machine

Git stores everything as objects named by their content. This post covers the three object types (blobs, trees, commits) and how they chain together to form Git's immutable history.

May 8, 2026 2 min read

Hello, I'm Bernard Katamanso

A proper introduction: who I am, what I build, why I write, and where to find me around the web.

May 8, 2026 2 min read

LLM Reasoning: From Next-Token Prediction to Constrained Decoding

A first-principles look at autoregressive transformers, the hallucination problem, and how constrained decoding can ground LLM outputs in structured knowledge.

Essays

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Latest from Substack

How to Make Deep Work Relevant to You

I have read Cal Newport’s Deep Work, and while the concept is insightful, I’ve been wrestling with how to actually apply it when you are still searching for your direction.

May 6, 2026 6 min