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https://github.com/babilonczyk/babilonczyk

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https://github.com/babilonczyk/babilonczyk

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README

          

# Jan Piotrzkowski - Full-Stack Software Engineer

## Hi there 👋🏻

Hi, I’m Jan - a product-focused Software Engineer with 4 years of experience shipping SaaS features, and now building my way into the future of biotech and BioAI. I take ownership in delivering features and improving codebases. I’m honest, easy to work with, and always keep the bigger business picture and its users in mind.

Most of my experience is in full-stack development using **Ruby on Rails**, **Angular**, **GraphQL**, **React**, and **Vue**. I've contributed to SaaS platforms, email automation tools, and data-heavy internal systems. I enjoy working closely with product teams, shipping high-impact features, and improving legacy code through clean architecture and test coverage.

Lately, I'm exploring areas like **bioinformatics**, **Python scripting**, and **cloud automation**, combining my engineering background with curiosity for science and data.

#OpenForWork

## Business Domains

Experienced in business domains: **SaaS**, **Cold Email Outreach**, **Property Tech**, **Energy Tech**

## Exp log:

`DEC '23` - `MAY '25` - [Quickmail.com](https://quickmail.com/)

More info


Working as a core team member in the quickmail - Cold Email Software

`APR '21` - `DEC '23` - [Ragnarson Softwarehouse](https://ragnarson.com/)

More info


Most of the time I've spent working for a starup with a solution for doing cost allocation based on automated metres readouts. The tool collected data from physical metres, decoded and processed the data to generate consumption values and cost allocation for tenants. I've also held an extra role of Project Coordinator for some time.

`JAN '21` - `FEB '22` - The lemkin.pl project for AGH University of Science and Technology

More info


Project realized under the AGH University of Science and Technology in Cracow. I've been responsible for building and extendeeing rest api with ruby using hanami framework.

## Certifications:





AgilePM Foundation




Scrum Master Certified




PRINCE2 Foundation

## I've worked with:

### Languages


Ruby
Python
JavaScript
TypeScript
GraphQL
Sass
Rust

### Frameworks


Ruby on Rails
FastAPI
Angular
TailwindCSS
Vue.js
React
Hanami
Pandas
MatplotLib
Scikit-learn

### DBs


PostgreSQL
Redis
ChromaDB

### Infra & Cloud


Heroku
AWS
Hugging Face
Docker

### Tools & Other


RSpec
Homebrew
Sidekiq

## Socials:







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If you're hiring in biotech business domain, AL/ML roles or for Ruby/Python full-stack projects - let’s talk!