by Klementyna_Witczak | Jul 24, 2026 | Work
May 2026 marks a period of massive transition for me. After over seven years of working full-time in the industry, including the last three years as a data architect, I’ve made the leap to leave the corporate nest and dedicate myself entirely to building KajoData....
by Klementyna_Witczak | Jul 20, 2026 | Work
In the world of data analysis, we often fall into a certain trap. We focus entirely on tools. We learn the newest Python libraries, master advanced SQL joins, build complex models in Power BI, and we believe that is enough to succeed. As a data analyst and data...
by Klementyna_Witczak | Jul 8, 2026 | Work
Since May of this year, when I completely went “on my own” after over seven years of full-time employment, including three years as a Data Architect, I have had even more time to observe the market. Developing KajoData and KajoDataSpace full-time, I talk...
by Klementyna_Witczak | Jul 6, 2026 | Work
May 2026 is a truly exceptional moment for me. After more than seven years of working in the data world, including three incredibly intense years as a Data Architect, I am closing a certain corporate chapter of my life. I have decided to step away from full-time...
by Klementyna_Witczak | Jul 6, 2026 | Work
Most of the advice I usually share on my blog or YouTube channel is aimed at people just entering the IT industry. I try to ensure those tips are structured, ethical, and methodical. I explain step-by-step how to build competencies, learn new tools, and craft a solid...
by Klementyna_Witczak | Jun 29, 2026 | Work
The world of data analysis is changing right before our eyes at a dizzying pace. Every other moment, we hear about new artificial intelligence models, further breakthroughs in automation, and tools that are supposedly designed to completely replace human labor. Many...
by Klementyna_Witczak | Jun 26, 2026 | Work
Logistics is a fascinating, yet incredibly unforgiving world. Unlike many other industries, absolutely everything here is brutally calculated. The vast majority of processes rely on hard dates, storage levels, and the physical flow of goods. This means that if the...
by Klementyna_Witczak | Jun 24, 2026 | Work
May 2026 is an absolutely pivotal moment for me. After more than seven years of intense work in the data analytics space, including three years specifically as a data architect, I have made the decision to permanently step away from full-time corporate employment....
by Klementyna_Witczak | Jun 22, 2026 | Work
When I started my journey in the data world over seven years ago, I was convinced that the key to success was perfect technological mastery. I thought that if I learned the most difficult functions in SQL, wrote flawless Python code, and built advanced models, the...
by Klementyna_Witczak | May 21, 2026 | Work
The discourse surrounding artificial intelligence is flooded with myths, fears, and extreme opinions. Whenever Large Language Models enter public debate, the conversation almost instantly drifts toward the same talking points: business function automation, corporate...
by Klementyna_Witczak | May 20, 2026 | Work
Entering the world of technology is often portrayed today as a straightforward, rosy path to financial and professional success. Numerous myths have grown around the IT industry, fueled by social media headlines and idealized images straight out of Silicon Valley....
by Klementyna_Witczak | May 19, 2026 | Work
When we think of the IT world, our minds often jump to rows of numbers, complex databases, and cold corporate logic. But there is a corner of the tech industry where those numbers come to life—where they run, jump, and even cry. That world is gamedev, and...
by Klementyna_Witczak | May 18, 2026 | Work
When we first start our adventure with data analysis, we often find ourselves staring at a screen full of charts and tables, wondering where this is all actually going. Without a clear vision of the future, it is easy to get stuck in a loop of repetitive reporting,...
by Klementyna_Witczak | May 15, 2026 | Work
In the world of data analysis, we are currently facing a fascinating but slightly stressful phenomenon. On one hand, data is hailed as the new gold, yet on the other, I increasingly hear voices full of concern. People are wondering if the field is about to be...
by Klementyna_Witczak | May 14, 2026 | Work
May 2026 marks a pivotal moment in my life. After more than seven years in the data world, including three years as a Data Architect, I am finally closing the chapter of traditional employment to dedicate myself fully to KajoData. It is a time for reflection, but also...
by Klementyna_Witczak | May 13, 2026 | Work
If you’re reading this, a thought has likely taken root in your mind, one that can effectively ruin many an evening: “What if I get fired?” You’re not alone in this. The job market can be fickle, and professional uncertainty is one of the most...
by Klementyna_Witczak | May 12, 2026 | Work
We often think that learning is simply a matter of time spent in front of a computer screen or with a book in hand. As someone who has traveled a long professional path – from studying Polish literature, through working in a hostel and a customer service department,...
by Klementyna_Witczak | May 11, 2026 | Work
I often meet people who are already “on the other side” – they’ve successfully changed careers, work as data analysts, and now, looking back, they tend to romanticize their journey. They talk about waking up at 5:00 AM, having inexhaustible motivation, and...
by Klementyna_Witczak | May 8, 2026 | Work
I’m writing to you at a very special moment in my career. As of May 2026, I have officially closed the chapter of my traditional 9-to-5 employment to dedicate myself fully to our growing community. This transition has finally given me the luxury of time—time to...
by Klementyna_Witczak | May 7, 2026 | Work
Have you ever sat at your desk, staring at a spreadsheet or a ticket queue, and asked yourself: what is the point of all this? Why am I putting in so much effort? We often feel like the odds of success are a coin toss—a simple fifty-fifty chance where things either...
by Klementyna_Witczak | May 6, 2026 | Work
Many aspiring data analysts make the same fundamental mistake: they focus almost exclusively on tools. They spend hundreds of hours mastering complex Python libraries, polishing their SQL queries, or creating visually stunning dashboards in Power BI or Tableau. While...
by Klementyna_Witczak | May 5, 2026 | Work
Even if you master Python to a professional level and your Excel spreadsheets look like works of art, you won’t get far in the world of data analysis without understanding analytical terminology. I repeat this to my students all the time: technology is just a...
by Klementyna_Witczak | Apr 30, 2026 | Work
Today, I want to deviate from the standard format you might be used to in my content. There will be no five-step guide to success, nor three questions that will change your life. Instead, let’s sit down and talk honestly about the state of the job market and why...
by Klementyna_Witczak | Apr 29, 2026 | Work
Introduction: A Controversy That Works In a job interview, you should lie. In your CV? You should lie there, too. I know, this sounds like incredibly controversial advice, doesn’t it? Most career advisors will feed you clichés about “authenticity”...
