Navas Herbert

Data Engineer & AI Builder who learns in public. ETL, data modeling, FastAPI, RAG - I write about what I'm building as I build it, mistakes included

Joined on May 16, 2026

Navas Herbert

Jun 25

We Built a Real API Live in Class - Here's How the Grade Tracker Session Went

#python #ai #fastapi #beginners

9 min read

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Navas Herbert

Jun 20

Build Your First RAG System From Scratch - No Frameworks, Just Python

#python #ai #machinelearning #beginners

9 min read

Navas Herbert

Jun 19

Building a REST API with FastAPI from Scratch - Full CRUD, SQLite, Middleware & CORS

#fastapi #python #webdev #beginners

11 min read

Navas Herbert

Jun 18

I Built an AI Document Intelligence API to Demo to My Internship Students - Here's the Full Story

8 min read

Navas Herbert

Jun 9

Today I Taught Linux File Permissions - And Alice Couldn't Read the Salary File

#linux #devops #beginners #ai

6 min read

Navas Herbert

Jun 9

Python Week 6: Our Programs Finally Read Real Files

#python #beginners #dataengineering #ai

8 min read

Navas Herbert

Jun 7

Python Week 5: One Variable, Many Values (Data Structures!)

#python #beginners #programming #opensource

8 min read

Navas Herbert

Jun 7

Python Week 4: We Taught Python to Remember Things (Functions!)

#python #beginners #development #programming

8 min read

Navas Herbert

May 25

Python Week 2: We Taught Python to Make Decisions

#ai #programming #python #learning

6 min read

Navas Herbert

May 25

Python Week 3: We Stopped Repeating Ourselves (Loops!)

#python #beginners #development #programming

7 min read

Navas Herbert

May 19

We Switched From SQL to Python - Here's How Week 1 Went

#python #beginners #development #programming

6 min read

Navas Herbert

May 16

I Taught SQL to Complete Beginners: Here's What Actually Happened

#sql #postgres #beginners #teaching

5 min read

Navas Herbert

May 16

Making Africa Energy Data Accessible to LLMs - a Practical Guide

#mcp #africa #energy #python

3 min read

DEV Community

Navas Herbert

Badges

1 Week Community Wellness Streak

Writing Debut

We Built a Real API Live in Class - Here's How the Grade Tracker Session Went

Want to connect with Navas Herbert?

Build Your First RAG System From Scratch - No Frameworks, Just Python

Building a REST API with FastAPI from Scratch - Full CRUD, SQLite, Middleware & CORS

I Built an AI Document Intelligence API to Demo to My Internship Students - Here's the Full Story

Today I Taught Linux File Permissions - And Alice Couldn't Read the Salary File

Python Week 6: Our Programs Finally Read Real Files

Python Week 5: One Variable, Many Values (Data Structures!)

Python Week 4: We Taught Python to Remember Things (Functions!)

Python Week 2: We Taught Python to Make Decisions

Python Week 3: We Stopped Repeating Ourselves (Loops!)

We Switched From SQL to Python - Here's How Week 1 Went

I Taught SQL to Complete Beginners: Here's What Actually Happened

Making Africa Energy Data Accessible to LLMs - a Practical Guide