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Mark C Allen

For DevOps engineers. Ideas, concepts, tips & tricks based on my day-to-day experience.

Everyday DevOps - 10 Reasons for Static Analysis

Everyday DevOps www.markcallen.com 10 Reasons for Static Analysis In this post, I break down how and why I use static analysis tools like ESLint and Ruff to catch bugs early, keep code clean, and automate checks before code ever hits CI. I show how to wire them into a JavaScript and Python project with examples you can copy and adapt. Want fewer bugs and cleaner code with less manual effort? Give it a quick read and start levelling up your workflow. Read Devcontainers for an easy-to-use...

Everyday DevOps - Did I Break the Internet

Everyday DevOps www.markcallen.com Did I Break the Internet 🚨 Thursday, I deployed core-api 😅 Two minutes later, Google declared a global incident. Did I break the internet? Highly unlikely. Was the timing suspicious? Absolutely. But let this be your friendly reminder: Correlation does not equal causation. If you have ever hit deploy and immediately wondered if you broke something. This one’s for you. Read Devpod on DigitalOcean Sometimes, your local development environment is doing too much...
Foxgloves by the side of the road

Everyday DevOps - How I Actually Use LLMs to Program

Everyday DevOps www.markcallen.com Please forward this to at least one other person you'd think would benefit from Everyday DevOps. New? Signup How I Actually Use LLMs to Program Large language models (LLMs) like ChatGPT, Gemini, and Claude are shaking up how we write software, but let’s be clear: they aren’t magic wands.For me, the problems I try and solve fall into three categories:1. I know what I know2. I know when I don't know3. I don't know what I don't know.I've detailed these in my...

Everyday DevOps - My Viral LinkedIn Post on Easy Dev Environments

Everyday DevOps www.markcallen.com My Viral LinkedIn Post on Easy Dev Environments Last week, I shared a LinkedIn post about the all-too-familiar pain of setting up local development environments. To my surprise, it struck a nerve. Thousands of reactions and hundreds of comments poured in from developers and DevOps pros worldwide. Why did it resonate? Because it highlighted a universal frustration: messy configurations, broken READMEs, and undocumented “tribal knowledge” that slows everyone...
Hotel lake at sunset

Everyday DevOps - The Myth of the Dying Junior Programmer

Everyday DevOps www.markcallen.com The Myth of the Dying Junior Programmer In my latest article, I challenge the fear that AI will wipe out early-career developers. Instead, I argue that AI tools like GitHub Copilot, ChatGPT, and others are actually supercharging junior devs, helping them write better code, learn faster, and contribute meaningfully to real-world projects sooner than ever. Rather than eliminating junior roles, AI is reshaping what it means to grow in this field, turning raw...
Code on a screen

Everyday Devops - The Value of an easy-to-use Dev Environment

Everyday DevOps www.markcallen.com The Value of an Easy-to-Use Dev Environment Spinning up a local dev environment shouldn’t feel like trying to launch a rocket with duct tape and hope. If it takes more than five minutes or, worse, requires tracking down Dave from QA, who “just knows how it works,” you’ve already lost. All I want is to clone the repo, run a command or two, and feel like a productivity god. One setup script rules them all: it wires up your config, fires up the stack, and makes...

Everyday DevOps - How to Write a Great README

Everyday DevOps www.markcallen.com How to Write a Great README In this post, I break down how to write a great README.md for your public GitHub projects. Using my own CLI tool, env-secrets, as an example, I walk through the structure every good README should follow: a clear project description, simple install instructions, usage examples, and setup steps for local development. I also cover how to document the release process, encourage contributions, and polish your README with markdown...
Elephant Rock

Everyday DevOps - Explaining technical things to non-technical people: the interview question

Everyday DevOps www.markcallen.com Explaining technical things to non-technical people: the interview question When explaining complex technical concepts to non-technical people—especially in interviews—I focus on empathy, simplicity, and storytelling to make ideas accessible without losing their depth. I draw from personal experience to show how aligning with the audience’s perspective improves understanding and highlights the ability to communicate technical expertise in a clear and...

Everyday DevOps - Using Feature Flags to Build a Better AI

Everyday DevOps www.markcallen.com Using Feature Flags to Build a Better AI In my latest post for DevCycle, I dive into how we tackled the tricky job of rolling out new AI models at Helix without risking a big public flop. Instead of launching updates blindly, we used feature flags to test new models with a small group of users first, either using email or device IDs. This let us spot issues early, tweak things quickly, and ensure Helix’s image recognition stayed sharp and accurate. Honestly,...
Coffee cup on books

Everyday Devops - Is it vibe coding if you know what you are doing

Everyday DevOps www.markcallen.com Is it vibe coding if I know what I’m doing? While AI tools like Chatgpt are transforming development workflows, their actual value is realized only when paired with solid expertise. This article highlights how informed developers can leverage AI to enhance productivity, demonstrating that understanding the fundamentals remains essential, even in an era of generative coding. Read Tips & Tricks for the week Static analysis is a key component of CI/CD, and that...

For DevOps engineers. Ideas, concepts, tips & tricks based on my day-to-day experience.