© Piotr Sikora 2025 | All Rights Reserved

Process Automation Specialist
Expert in business process automation using n8n, Python, and AI. I help companies save time and money through intelligent workflow automation. With years of experience in process optimization, I specialize in identifying repetitive tasks and transforming them into efficient, automated workflows.
My approach combines technical expertise with business understanding to deliver automation solutions that truly make a difference. Whether it's streamlining accounting processes, optimizing logistics, or automating marketing workflows, I focus on creating sustainable, scalable solutions.
Real case of Flowlint - R1: Node is missing retry/backoff configuration - n8n linter
Comprehensive analysis of 14 real-world scenarios showing how TOON reduces LLM token costs by 75% compared to JSON while maintaining full feature parity.
Learn how to pass objects to n8n Guardrails by stringifying JSON, sanitizing PII, and parsing it back. Includes full workflow and configuration steps.
When the Guardrails node was announced on October 30th, 2025 during the n8n Livestream: AI Guardrails, Pinecone & Community Highlights, I was genuinely excited. This is exactly the kind of feature many AI-automation builders were waiting for.
A few weeks ago, I started contributing to the n8n forum by answering questions and sharing my knowledge.
Learn how to list Ollama models and send chat or text generation requests using cURL. This guide shows practical examples with the Llama 3 model, including streaming and non-streaming responses, plus how to generate output with the Ollama API. Perfect for developers working with local LLMs and AI tools.
n8n workflow for content manager and SEO specialists
Did you knew that you can easily overwrite print function using `FunctType`
Have you ever been dreaming about variables in CSS code? Or maybe other functionalities like functions? The simplest way to have a variables in CSS is to work with preprocessor like SASS
Sometimes you will need to create autoexecuted object (for example in case of load/document ready events)
Learn how to create collapsible elements and accordion components using pure CSS-no JavaScript needed
Have you been creating your own classes in pure JavaScript?
Headhunters are calling to you and want to check your skills as fast as possible.
Last weekend Ive been with my friends at DevMeeting about Angular 2.0 in Krakow.
Last time I was a little bit busy... because of playing with Raspberry Pi :) Yeah... I think it made me motivated to digg deeper in nodejs/expressjs.
Ive been trying to build simple filtering in application -> Show-ur-bugs
Pipes are very important element of Angular 2 framework.
It's been a long time... I should tell about this book.
I was using a lot of plugins which can make my life easier when Im dealing with inputs especially checkboxes and radio buttons.
Do you want to check your fundamental knowledge of FEDev?
Currently everybody is focused on most trendy JS Framework
Each project needs evolution. After a comment by Peter van Meijgaard Ive made a few changes.
I’m so lazy that I forgot to write any post on this website for last few months…
I heard very interesting story about improvements in delivery of emailers.
Angular is giving great tools to build application and NgRx gives you opportunity to manage you app with state.
MeetJS has arrived in Kielce! Join a growing JavaScript community and connect with developers passionate about web technologies. Don’t miss our upcoming talk on how side projects can boost your skills and motivation. If you're in or near Kielce, you’re invited to be part of the event.
Hey ! It was a great time to meet you all **JavaScript**'ers / **UI'ers** / **FrontEnd'ers** on **MeetJS Kielce!** I hope this virgin event will come true this month once again!
Learn how to simplify your code and improve development in JavaScript and Node.js, with lessons updated continuously based on real-life use cases.
Discover why Stylus became my go-to CSS preprocessor after years of using SASS. Learn how Stylus simplifies workflow with cleaner syntax, object-based styling, and powerful functions for generating CSS properties.
We are after second edition of MeetJS Kielce which took place 4th of April in Czerwony Fortepian.
I had a situation last week with requests to server from Vue using Axios where data field has been empty.
This article will be an introduction how to create project based on Typescript using Vue and Vuex.
This article will describe shortly how to build Redux-like state machine engine
Give back to community they said and here it comes!
To start project we will need to create node project. I assume that you have installed Node.js on your machine.
I had a chance to work with one of websites which was affected by hackers attack
Do you want to set HTTP security headers in WordPress?
During the recent integration event in Grodek with , one of the planned attractions (along with amazing conversations with people) were arcade machines.
Learn what WordPress XML-RPC is, why xmlrpc.php can be a security vulnerability, and how to disable XML-RPC manually using .htaccess. Protect your WordPress site from brute-force attacks and unauthorized access with a simple code snippet that blocks or restricts xmlrpc.php usage.
While working on one of the NATAS challenges from overthewire.com, I encountered the **XOR encryption algorithm**. It is a **symmetric-key algorithm**, meaning the same key is used for both encryption and decryption
Let’s imagine that we have an object which we want to access.
Let's imagine that we could optimize / minify if statement. What could we do?
Do you sometimes find yourself wondering (especially when you haven't looked at your own code for a while or are tasked with maintaining someone else's legacy code) what a particular piece of code actually does?
Since the emergence of LLMs on the market, I've been quite skeptical of them.
As a developer passionate about JavaScript, I have a question out of curiosity.
Short training by Tomek Turba gave me a great overview of issues related to AI Security in companies
Short training by Tomek Turba gave me a great overview of issues related to AI Security in companies