Krzysztof Pajak
Tech Lead at grandnode.com
Poland
Summary
🤩
Rockstar🎓
Top SchoolKrzysztof Pajak is a Tech Lead and seasoned backend engineer with 9 years of experience building cloud-native and cross-platform e-commerce systems using ASP.NET Core and MongoDB. He currently leads design and implementation of a microservice for electronic tax declarations at Symfonia, bringing strong architecture, integration, and engineering-practice discipline to production systems. Previously he helped evolve GrandNode, an open-source .NET Core e-commerce platform, contributing backend features and bug fixes around category management, store filtering, and authentication workflows. Comfortable with Azure, Kubernetes, GraphQL and messaging patterns, he blends platform-level thinking with hands-on coding to deliver reliable services. A dotnet-foundation member based in Poland, he pairs academic computer science training with practical experience shipping scalable SaaS and cloud applications. An often-overlooked strength is his track record of improving developer-facing features that simplify admin workflows and long-term maintainability.
9 years of coding experience
Studia magisterskie, Computer Science, Studia magisterskie, Computer Science at Krakow University of EconomicsInformatyka ekonomiczna, Informatyka ekonomiczna at Akademia Ekonomiczna w Krakowie
Github Skills (11)
asp-net-core10
csharp10
mongodb10
back-end-development10
ecommerce10
mongodb-database10
dotnet-core10
asp-net-core-mvc9
entity-framework-core7
asp-net6
nosql6
Programming languages (5)
Github contributions (5)
grandnode/grandnode2
May 2021 - Jan 2023
Open-Source eCommerce Platform on .NET Core, MongoDB, AWS DocumentDB, Azure CosmosDB, LiteDB & Vue.js
Role in this project:
Back-end Developer
Back-end DeveloperContributions:12 releases, 12 reviews, 971 commits in 1 year 8 months
Contributions summary:Krzysztof contributed to the development of an e-commerce platform built on ASP.NET Core with MongoDB. The commits showcase the addition of functionality to the category management system with the introduction of an external identifier. Furthermore, the user addressed a bug related to filtering by store in the back-end interface and made minor improvements to disable two-factor authentication. These contributions point to a focus on back-end development and database interactions within the GrandNode2 e-commerce platform.
tenantecommercelitedbshopping-cartvue
KrzysztofPajak/MediatR.MinimalApi
Jun 2024 - Jan 2025
Extends Mediatr functionality for Minimal APIs in ASP.NET Core 8
Contributions:4 releases, 9 PRs, 42 pushes in 7 months
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