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babilonczyk/README.md

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

More info

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

APR '21 - DEC '23 - Ragnarson Softwarehouse

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:


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

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