Patryk Domałeczny
Technical Team Lead at Contractbook
Katowice, Silesian Voivodeship, Poland
Summary
🤩
Rockstar🎓
Top SchoolPatryk Domałeczny is a Technical Team Lead with 11 years of software engineering experience and over 3 years in management, currently leading a cross-functional team at Contractbook from Katowice, Poland. He combines hands-on development in React, TypeScript, Python and Elixir with product-driven leadership—spending roughly half his time coding while guiding a team of six to validate product hypotheses. Patryk has driven measurable impact, notably leading a project that boosted the fully signed contracts funnel success rate by 50%, and he pairs technical planning with direct user research and requirement gathering. As an early front-end hire, he established engineering processes and infrastructure, and later shepherded outsourced teams to adopt company culture and delivery standards. He contributes to open-source—working on Marble.js to modernize TypeScript/RxJS server-side patterns and improve query/URL parameter handling and test coverage—demonstrating a taste for functional, reactive backend design. With an MBA in IT underway and a master’s in computer science, he blends technical depth with business-minded execution and active mentorship.
11 years of coding experience
8 years of employment as a software developer
Master Degree Computer Science, Master Degree Computer Science at The Silesian University of TechnologyMaster of Business Administration - MBA Information Technology, Master of Business Administration - MBA Information Technology at AGH University of Krakow
Polish, English, German
Stackoverflow
1reputation
0reached
1answer
0questions
Github Skills (17)
javascript10
typescript10
rxjs10
typescript-types10
nodejs10
typescripts10
application-framework9
app-framework9
functional-programming9
web-framework9
observables8
observable8
querystring8
testing8
reactive8
Programming languages (6)
Github contributions (5)
marblejs/marble
May 2018 - May 2018
Marble.js - functional reactive Node.js framework for building server-side applications, based on TypeScript and RxJS.
Role in this project:
Backend Developer
Backend DeveloperContributions:19 commits, 8 pushes, 2 branches in 4 days
Contributions summary:Patryk primarily contributed to the Marble.js framework by implementing and refactoring core functionalities related to query and URL parameters. They focused on migrating the project to use modern import syntax, creating middleware for handling default query parameters, and improving the structure and naming conventions of core components. The user also added testing coverage for the query parameter functionalities.
rxjsfunctional-programmingfunctional-reactive-programmingjs-frameworknode-js
pdomaleczny/borewicz
Oct 2017 - Jan 2018
Contributions:7 PRs, 17 pushes, 4 branches in 2 months
personselfiedrunkshevalidating
Find and Hire Top DevelopersWe’ve analyzed the programming source code of over 60 million software developers on GitHub and scored them by 50,000 skills. Sign-up on Prog,AI to search for software developers.