Marek KaliƄski

IT Tooling Engineer

Automations | Back-end Engineering | Front-end Engineering | Data Engineering | UX Design

Hi there!

I'm Marek and this is my personal portfolio website. I wanted it to be simple and comprehensive - hopefully it is exactly that. If you'd like to know more, feel free to contact me on LinkedIn.

About me

I began my IT journey in 2019 when I joined Atos GDC Poland, providing L1 support as a Service Desk Agent. After one year on the desk, I was promoted to streamline knowledge management, agent training initiatives, and all other activities related to service desk operations support.


My transition into engineering started as a result of a major automation push. I was appointed to lead a specialized team tasked with the end-to-end management of an AI-powered chatbot. In this role, I was responsible for the design and implementation of complex user flows, establishing myself as the Subject Matter Expert (SME) for chatbot operations within the organization. My success in optimizing these processes led me to consult with other teams, helping them replicate these efficiencies for their respective customers.


As I collaborated more closely with technical support teams to enhance chatbot capabilities by integrating ServiceNow and Nexthink APIs, I transitioned into a dedicated technical role. Since then, my focus has been to become a skilled programmer, starting with Python for back-end logic and automation, and utilizing Node.js and vanilla JavaScript for front-end integrations.

Technical skills

Over the years, I have worked with a wide range of technologies. These are the tools I am most comfortable with today, but it is by no means an exhaustive list of what I can do or what I am excited to learn in the future.

Python
Comfortably utilize Python for back-end engineering, specifically building APIs and web applications using FastAPI and Django, capable of integrating with external services.
Back-end APIs & Databases
Solid experience in implementing and consuming REST and GraphQL APIs. I am familiar with SQL databases and can ensure that data retrieval and storage are handled efficiently.
Data Engineering & AI Operations
Skilled in managing AI-powered product operations, including knowledge base architecture and ETL pipelines. I used Python and Jupyter Notebooks to clean and prepare large datasets, transforming raw information into actionable insights and reporting.
JavaScript & Front-end Integration
Fundamental proficiency in vanilla JavaScript and Node.js for creating custom front-end functionalities and tailored back-end integrations. This enables me to build full-stack features, such as AI-powered features or interactive web interfaces.
Automated Testing
I'm familiar with writing testable code and developing comprehensive automated test suites using Selenium and Python's testing frameworks.
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ServiceNow & Enterprise Tooling
Years of experience in the ServiceNow platform, extending its capabilities through custom widgets and API integrations.

Soft skills

During my engineering journey I have also built a strong suite of soft skills that undoubtedly allowed me to excel in all of my roles so far.

Language

Technical Writing & Documentation

As an English major, I naturally excel at working with language and various language-oriented tasks. I can produce all kinds of internal and technical high-quality content like SOPs, WIs, product documentation, or training materials. In addition, I have a vast experience in designing, writing and publishing end user facing content such as KB articles or chatbot user flows.

Presentation

Great interpersonal skills

Writing, however, is not my only strength when it comes to soft skills. I tend to do a very good job giving presentations; hence, I have been asked to conduct technical product demonstrations or lead various training sessions on many occasions. I am also known to have the ability and willingness to be the face of the team, push for things to be done or act as 'that guy' connecting everyone.

Experience

Experienced IT professional

The everyday corporate world has a unique set of challenges but given my background and current experience I was always able to and I continue to successfully navigate any professional situation thrown at me. I am also very experienced in collaborating with international stakeholders.