---
title: "Kelvin R. Tobias (@kelvinintech) | Hashnode"
description: "Engineering Leader | Writer | Software Developer | Advocate for Neurodiversity. Read the latest articles by Kelvin R. Tobias on Hashnode."
url: "https://hashnode.com/@kelvinintech"
---

@kelvinintech

# Kelvin R. Tobias

@kelvinintech · Greenville, NC · Joined December 2024

Engineering Leader | Writer | Software Developer | Advocate for Neurodiversity

[Website](https://kelvinintechconsultingllc.site/)

### [Tough Vikings Take Delayed Icebaths 🧊](https://kelvinintech.hashnode.dev/tough-vikings-take-delayed-icebaths?utm_source=hashnode&utm_medium=feed)

Learn the machine learning lifecycle with a Viking analogy.

17 min read · [kelvinintech.hashnode.dev](https://kelvinintech.hashnode.dev/tough-vikings-take-delayed-icebaths?utm_source=hashnode&utm_medium=feed)

[Oct 19](https://hashnode.com/posts/tough-vikings-take-delayed-icebaths/6ad673598e97208120682bb0)

### [I Scored a 612 on AWS ML Engineer Associate (Passing is 720). Here's the AI Prep Pipeline I'm Building So It Doesn't Happen Again.](https://kelvinintech.hashnode.dev/i-scored-a-612-on-aws-ml-engineer-associate-passing-is-720-here-s-the-ai-prep-pipeline-i-m-building-so-it-doesn-t-happen-again?utm_source=hashnode&utm_medium=feed)

I sat MLA-C02 and scored a 612. Passing is 720. On paper, that's a fail. But here's the part I'm actually proud of: I never watched a single minute of the Udemy course that came with my practice quest

16 min read · [kelvinintech.hashnode.dev](https://kelvinintech.hashnode.dev/i-scored-a-612-on-aws-ml-engineer-associate-passing-is-720-here-s-the-ai-prep-pipeline-i-m-building-so-it-doesn-t-happen-again?utm_source=hashnode&utm_medium=feed)

[Sep 25](https://hashnode.com/posts/i-scored-a-612-on-aws-ml-engineer-associate-passing-is-720-here-s-the-ai-prep-pipeline-i-m-building-so-it-doesn-t-happen-again/6ab6e54367f1db6759b2afe3)

### [The Room You Walk Into](https://kelvinintech.hashnode.dev/the-room-you-walk-into?utm_source=hashnode&utm_medium=feed)

A few weeks ago I taught a prompt engineering workshop to a room of high school students in Kinston, North Carolina. One of them told me AI felt intimidating. Another said he uses it every day but has

5 min read · [kelvinintech.hashnode.dev](https://kelvinintech.hashnode.dev/the-room-you-walk-into?utm_source=hashnode&utm_medium=feed)

[Jul 12](https://hashnode.com/posts/the-room-you-walk-into/6a5404f8e49732d70f3abd60)

### [Hello\_LLM: Calling Claude from Python, C#, and R — Why Biotech Engineers Need All Three](https://kelvinintech.hashnode.dev/hello-llm-calling-claude-from-python-c-and-r-why-biotech-engineers-need-all-three?utm_source=hashnode&utm_medium=feed)

Why biotech engineers need fluency across three languages. Build the same LLM integration in Python, C#, and R to understand ecosystem trade-offs.

6 min read · [kelvinintech.hashnode.dev](https://kelvinintech.hashnode.dev/hello-llm-calling-claude-from-python-c-and-r-why-biotech-engineers-need-all-three?utm_source=hashnode&utm_medium=feed)

[Apr 22](https://hashnode.com/posts/hello-llm-calling-claude-from-python-c-and-r-why-biotech-engineers-need-all-three/69e8ca015d1c1071054a88a6)

### [PyTorch Zero to One: Why I Built a CNN from Scratch (and What It Taught Me That Transfer Learning Wouldn't)](https://kelvinintech.hashnode.dev/pytorch-zero-to-one-why-i-built-a-cnn-from-scratch-and-what-it-taught-me-that-transfer-learning-wouldn-t?utm_source=hashnode&utm_medium=feed)

A software engineer's hands-on approach to understanding CNN feature extraction, regularization, and overfitting — no pretrained backbones allowed.

6 min read · [kelvinintech.hashnode.dev](https://kelvinintech.hashnode.dev/pytorch-zero-to-one-why-i-built-a-cnn-from-scratch-and-what-it-taught-me-that-transfer-learning-wouldn-t?utm_source=hashnode&utm_medium=feed)

[Mar 28](https://hashnode.com/posts/pytorch-zero-to-one-why-i-built-a-cnn-from-scratch-and-what-it-taught-me-that-transfer-learning-wouldn-t/69c856407cf27065107388fb)