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Krzysztof Zieliński

@krzysztofzielinski

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Backend .NET software developer building Azure microservices for SaaS, platforms, and industrial solutions.

Poland

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What I'm looking for

I’m looking for a Backend .NET role where I can build and maintain Azure-based microservices and web APIs, collaborate on DevOps practices, and deliver reliable SaaS features end to end.

I’m a Backend .NET software developer focused on building and evolving microservices, with strong experience across SaaS platforms, web APIs, and data-driven systems.

Recently, I worked on a Norwegian waste management application and a British platform for suppliers and customers to manage facilities and job workflows, using .NET 8, ASP.NET Web API, microservices, SQL, Entity Framework, Git, and Azure. I also delivered a Belgian SaaS application for customs data—covering flows, duty costs, and declaration status—with Azure services such as Functions, Blob Storage, App Service, Cosmos DB, Service Bus, and Docker.

Earlier roles included UK and international projects: ticket vending machine software for multiple train operating companies, time and expense tracking, employee benefits management, and systems for payments and worker–employer connections. I hold a Master of Engineering (Information Technology specialization) and I bring fluent English, plus hands-on delivery experience from ERP-integrated .NET applications.

Experience

Work history, roles, and key accomplishments

Current

Backend .NET Software Developer

Current

Softcraft

Mar 2026 - Present (4 months)

Worked on a Norwegian waste management application and a British platform for facilities and job workflows using .NET technologies.

Microservices SQL Entity Framework Git Azure

Backend .NET Software Developer

Co.Brick

Oct 2021 - Nov 2025 (4 years 1 month)

Developed a Belgian SaaS application for managing customs data, flows, duty costs, and declaration status using .NET 8 and Azure-based services.

.NET 8+Microservices SQL Git Azure Functions Azure Services DevOps Docker

Backend .NET Software Developer

Future Processing

Apr 2017 - Sep 2021 (4 years 5 months)

Delivered multiple .NET projects including solutions for ticket vending machines, time and expense tracking, employee benefits management, motorway fare-gate payments, and a temporary workers platform.

.NET ASP.NET WPF Microservices TFS Entity Framework SQL Git Azure

Backend .NET Software Developer

Centrum Technologii Informatycznej

Dec 2016 - Feb 2017 (2 months)

Built an application for data collectors with integration to an ERP system using .NET technologies.

.NET SQL

Education

Degrees, certifications, and relevant coursework

Silesian University of Technology

Master of Engineering, Information Technology

2015 - 2016

Master of Engineering (specialisation Information Technology) with macrocourses in Automatic Control and Robotics, Electronics and Telecom, and Informatics, completed in 2015–2016.

Silesian University of Technology

Bachelor of Engineering, Information Technology

2011 - 2015

Bachelor of Engineering (specialisation Information Technology) with macrocourses in Automatic Control and Robotics, Electronics and Telecom, and Informatics, completed in 2011–2015.