Blog Posts

Long-form articles and blog posts
Abstract digital landscape with layered purple mountain silhouettes and flowing data streams of binary code and wireframe elements against a gradient sky, visualizing the intersection of technology and nature.

You don’t need permission to get promoted

| In General
| 7 minute read

After 27 years in tech—working at Sun Microsystems, Oracle, and AWS, then coaching dozens of colleagues through promotions from both sides—I’ve learned something that most people get backwards: Your career belongs to you. Not your company. Not your manager. Not the promotion committee. Everything el…

A silhouetted figure stands in the center of a futuristic corridor with neon pink and blue glowing lines on the ground and vertical light beams extending upward into the distance, creating a symmetrical tunnel effect against a gradient background transitioning from blue at the top to magenta and purple on the sides.

The explore/exploit guide to your first tech job

| In Tech
| 7 minute read

A YouTube viewer reached out to me the other day after watching one of my videos. He’d just started at a big tech company and wanted to know: How do you navigate the fog? How do you figure out what to focus on? What are things to avoid?

I’ve felt that fog three times—at Sun Microsystems, Oracle, and AWS. And after 27 years and countless conversations with mentees, I think there are three phases that help cut through it.

A tabby cat with striking amber eyes sits at a desk in warm, golden lighting, surrounded by an open book, stacked papers, and a glowing desk lamp. Digital icons representing WiFi, images, shopping, and other technology symbols float in the air around the cat, suggesting connectivity and digital communication. The scene is bathed in warm orange and yellow tones, with a window visible in the background showing an evening sky.

We’re still living in the cat pictures era of AI

| In Tech
| 7 minute read

Most people use AI the way our parents used the Internet in 1995. They’d dial up their modem, check the weather forecast on Yahoo, maybe look up a recipe, and call it a day. The idea that this same technology would eventually let them video call their grandchildren, run a business, or access humani…

AWS re:Invent 2014 conference slide showing Constantin in a light blue shirt standing on stage. The slide title reads “What you'll get out of this session” with five bullet points: A lower AWS bill, A more scalable, robust, dynamic architecture, More time to innovate, Real-world customer examples, and Easy to implement. A mountain with a flag icon appears in the bottom right corner of the slide.

3 slides everyone uses (but you should delete)

| In General
| 7 minute read

In 2014, I was preparing my AWS re:Invent presentation on “Running Lean Architectures.” I had my slides ready: agenda, bio, resources. Then I stopped. Why was I presenting this in the first place? The answer: to help people save money on AWS. Not to check boxes on a corporate template. Not to prove …

A watercolor illustration of a solitary figure in dark clothing standing on a vast, layered desert landscape. The scene features rolling sand dunes in warm tones of beige, tan, and gold, with deep burgundy and rust-colored bands flowing across the foreground. A golden sun or citrus slice appears in the upper left corner. The composition conveys a sense of isolation and contemplation in an arid, minimalist environment.

When Claude Suggested Brian Eno: Building Art You Can't Control

| In Tech
| 12 minute read

On constrained serendipity, learning by doing, and whether the system is the art. I’m chatting with Claude, kicking around ideas on building a tool that generates AI images, but without the prompting. I like to start these chats by brain-dumping ideas into it. In this case it’s about auto-generating…

Silhouette of a woman on stage with arms outstretched in a confident pose, backlit by golden and blue stage lights with a blurred audience in the background.

Before you present: 7 critical checks for tech speakers

| In General
| 7 minute read

February 1998. Munich. Sun Microsystems. My first customer presentation. I stood in front of a roomful of IT professionals with a marketing deck about our “newest, better workgroup server.” I hadn’t rehearsed beyond flipping through the slides a couple of times. I didn’t know who these people were o…

A blue background with wavy patterns features the text 'INVITE YOUR HEROES INTO AI!' in white letters with red outline. On the left is a person in a purple suit with a dancing pose. Next to them is a large yellow pointing hand gesture towards a robot with a square head, round eyes, a red triangular nose, and a yellow bulb on top. On the right is a cartoon illustration of Constantin, wearing a dark green hoodie, with a thoughtful hand gesture near his chin.

Invite your heroes into your AI conversations

| In Tech
| 7 minute read

I had a problem.

I wanted to create a YouTube channel and had my first video ready to go, but then… nothing. Weeks passed. I had ideas, I had equipment, and I’d watched enough tutorials to edit like a pro. But I couldn’t get myself to shoot video number two.

Classic procrastination.

So I did what I often do when I’m stuck: I talked to Claude. But this time, I didn’t just ask for advice. I invited two experts into the conversation to help me figure this out.

A lone figure walks through a minimalist architectural space with illuminated vertical golden panels and columns, their silhouette reflected on the polished white floor, creating a sense of scale and ethereal atmosphere with warm backlighting.

From Worry to Action: A Crisis Survival Guide

| In General
| 11 minute read

A few days ago, I had a conversation with a former colleague who interviewed for a new job because she couldn’t stand her current one. Getting a new offer made her feel relieved and optimistic again: She had escaped.

Many others may not be so lucky this year.

Tech layoffs are accelerating. The economy—if we’re honest and look past the AI boom—looks shaky. Gold prices are spiking, which historically signals uncertainty ahead. And if you’re reading this feeling worried about your job, your future, or the general state of things, I know well how you feel.

Over 27 years and five major crises, I’ve learned one thing: the difference between thriving and drowning isn’t luck—it’s knowing what you can change and what you can’t.

A surreal artistic illustration showing three people in business attire walking across a large, colorful DNA double helix structure that serves as a bridge through a cloudy sky. The DNA strand displays vibrant rainbow colors including pink, orange, blue, and purple. Below, a small figure with an umbrella appears to be falling through the clouds. The scene has a dreamy, fantastical quality with soft pastel clouds in the background.

The 30-year-old trust formula that still runs the world

| In General
| 10 minute read

“To me, you’re not just Systems Engineers—you are Speaking Engineers. I’ve got plenty of engineers working on great products. However, I need you to speak to customers and earn their trust in our technology.” That was Scott McNealy, CEO of Sun Microsystems, talking to a room full of technical profes…

Whimsical steampunk factory scene with cartoon workers operating brass machinery among clouds and stars.

The unexpectedly complex rabbit holes involved in making music playback a 1-click experience

| In Tech
| 15 minute read

All I wanted was to press a button and hear SomaFM Groove Salad through my home stereo. 🎵

What I got instead was six weeks of diving into AV receiver telnet commands, Raspberry Pi power mysteries, and NFC webhook proxies. Sometimes I spent an entire week debugging my Home Assistant setup only to discover I’d been using the wrong IP address the whole time 🤦‍♂️.

But here’s the thing: the journey is the reward. Sure, I could have just lived with telling Alexa to turn on my AV receiver, connect to it over Bluetooth, then asking it to play what I want. But then I wouldn’t have learned how UPNP broadcasts get mangled by WiFi bridge modes, or that a 2.2W Raspberry Pi can teach you more about power supply stability than any electrical engineering textbook.

This is the story of how a simple goal—press button, get music—led me down some of the most beautifully complex rabbit holes I’ve explored in years. And why that complexity is exactly the point. 🐰

Four hooded figures in dark robes riding horses through a destroyed modern city street at night. The scene is illuminated by vibrant neon lighting in pink, purple, and orange hues from damaged storefronts and buildings. Debris and rubble are scattered across the wet pavement, creating an apocalyptic cyberpunk atmosphere.

The four horsemen of a dying career (and the shields that protect you)

| In Productivity
| 9 minute read

Working for my then employer’s Munich office in 2011, I felt it—that hollow sensation when your career becomes a treadmill. The acquisition of the company I originally joined had stripped away the technological beauty and purpose I’d thrived on for more than a decade. The rigid culture, the pure commercial focus, the loss of autonomy.

I wasn’t incompetent, broke, or irrelevant… I was just bored.

And boredom, I realized, was the first horseman of a dying career.

A network of fungal mycelia with golden-orange spores connected by luminous thread-like structures radiating outward from a bright central hub, set against a blue background, resembling the interconnected web structure of fungal networks.

How to thrive as an Expert Generalist in the age of AI

| In General
| 8 minute read

A human being should be able to change a diaper, plan an invasion, butcher a hog, conn a ship, design a building, write a sonnet, balance accounts, build a wall, set a bone, comfort the dying, take orders, give orders, cooperate, act alone, solve equations, analyze a new problem, pitch manure, program a computer, cook a tasty meal, fight efficiently, die gallantly.

Specialization is for insects.

— Robert A. Heinlein

When I read a recent article about Expert Generalists on Martin Fowler’s blog, I immediately changed my LinkedIn title. Finally, someone had named what I’d been doing for 27 years without realizing it!

A magical library interior with towering curved bookshelves reaching up to a ceiling covered in golden autumn leaves, warm ambient lighting, and a silhouetted person standing before a large circular window that floods the space with golden light

How to turn imposter syndrome into a superpower

| In Productivity
| 5 minute read

Here’s a secret: after almost 13 years at Amazon Web Services, I still felt like most people around me were smarter and more capable than me. And now, as a blogger looking at other writers? That feeling hasn’t gone away. If this sounds familiar, you’re experiencing imposter syndrome—and you’re in ex…