Mateusz is available for hire

Mateusz Kowalewski

Verified Expert in Engineering

Solutions Architect and Software Developer

Location

Gdańsk, Poland

Toptal Member Since

January 19, 2022

Mateusz is a solutions architect with 10+ years of experience with .NET and a proven track record of delivering projects of various sizes and complexity, from €100,000 T&M initiatives to €1,000,000 fixed-price programs. He keeps solutions simple and cognitive complexity low. His main areas of activity are presales, project estimation and planning, bootstrapping projects, technical cooperation with customers, technical supervision and leadership, and organization-wide technical strategy.

.NET .NET Core Infrastructure as Code (IaC)Model View ViewModel (MVVM)C#Entity Framework ASP.NET MVC Azure DevOps Microservices CQRS Xamarin ASP.NET Core Blazor Test-driven Development (TDD)Microsoft Silverlight TOGAF Visual Component Library (VCL)

Portfolio

Sii

Azure, Windows Presentation Foundation (WPF), Blazor, Xamarin, .NET, .NET Core...

Sii

Azure, .NET, Microsoft Azure

ASYC

C#, .NET, Windows Presentation Foundation (WPF), Microsoft Silverlight, Prism...

Experience

C# - 10 years .NET - 10 years Solution Architecture - 10 years Azure DevOps - 7 years Azure - 7 years Microservices - 7 years CQRS - 6 years Domain-driven Design (DDD) - 2 years

Availability

Part-time

Preferred Environment

Visual Studio, Microsoft Teams, Windows

The most amazing...

...thing I've delivered is a €1 million fixed-price program consisting of desktop and cloud applications for making measurements of distance on photos.

Work Experience

Solutions Architect

2015 - PRESENT

Sii

Conducted technical supervision over developers. My other responsibilities were bootstrapping projects, architecture governance, and technical leadership over agile teams.
Estimated the projects and made them happen. Contacted and consulted customers. Advised them toward suitable solutions.
Contributed to SEM, an engineering methodology that introduces delivery process standardization in the organization of 300 developers.
Helped with the delivery of around 50 projects from .NET or Azure. Some projects were straightforward, with a small team, time, and material model, and some of them were fixed-price programs worth over 1,000,000 euros.

Technologies: Azure, Windows Presentation Foundation (WPF), Blazor, Xamarin, .NET, .NET Core, CQRS, Domain-driven Design (DDD), Test-driven Development (TDD), Solution Architecture, Microsoft Azure

Technical Leader

2014 - 2015

Sii

Led a team of four. Transformed the Windows Phone mobile app with C++ back end into cross-platform Xamarin-based app with .NET and Azure back end.
Developed a long-term P2P loan platform, leading a team of five. Extended and refactored the .NET back end hosted on Azure.
Managed a team of three. Created a few C4 drivers for various fire protection and alarm systems. The drivers were part of a highly regulated ecosystem.

Technologies: Azure, .NET, Microsoft Azure

Owner, Software Developer, and Architect

2011 - 2014

ASYC

Developed an e-learning solution for a local English language school.
Created a solution for planning activities in companies that hire trainers who perform courses with trainees. It includes the whole business process, from managing people up to accounting.
Developed Funeral System, a system for comprehensive management of funeral houses.
Created Asyc.Core, a framework for fast LOB application development.
Created NeuroLogo, a system that helps therapists in aphasia treatment.
Built a Windows desktop client for a Dropbox-like system.

Technologies: C#, .NET, Windows Presentation Foundation (WPF), Microsoft Silverlight, Prism, Microsoft Azure

Senior Software Engineer

2012 - 2013

Sii

Re-engineered a framework for OpenCL driver validation.
Developed the Hydra Topology Explorer. This tool is still in use and can be considered a visualization tool for early IoT.
Supervised interns and performed a series of technical pieces of training in the C# and .NET domains.

Technologies: C#, .NET

Software Developer

2008 - 2011

Wolters Kluwer

Developed the desktop versions of LEX and ABC, industry-leading legal applications.
Learned how to work within a big team, working together on a 25-million LOC solution.
Introduced algorithms that significantly improved the performance of searching visualization.

Technologies: C++, Microsoft Foundation Class (MFC) Library, Microsoft Foundation Classes (MFC), ERC-20, Standard Template Library (STL)

Software Developer

2006 - 2011

Freelance

Created custom software mainly for the funeral industry.
Learned full software development lifecycle, including the requirement analysis phase.
Developed many applications, three of which are still on the market—obituary designer, ribbon designer, and card designer.

Technologies: .NET, Windows Forms (WinForms), Entity Framework, C++, Visual Component Library (VCL)

Experience

BLK3D

The Leica BLK3D is a measurement solution based on photos. Each photo captured is a complete measurement record that contains height, width, and depth measurements. Measurements can be created at any point, right away on-site using the handheld BLK3D Imager, or at any point in time after that using the BLK3D Desktop Software.

Alice

Single sign-on for all 1,000+ digital learning products for the whole company. Integrated with external credential providers (structure of all 2,000,000+ students in Denmark) and prepared for high traffic peaks.

National Criminal Register

Acted as Lead Solution Architect for v2 of the National Criminal Register. Polish Ministry of Justice sponsored this big, public, fixed-price initiative. The main purpose of it was to eliminate human involvement from the process to the greatest possible extent, and the environment of execution was highly regulated—driven by polish law.

Skills

Frameworks

.NET, .NET Core, Blazor, Entity Framework Core, ASP.NET MVC, ASP.NET Core, Windows Presentation Foundation (WPF), TOGAF, Angular

Platforms

Azure, Xamarin

Other

Solution Architecture, Microsoft Azure, Azure Resource Manager (ARM), Infrastructure as Code (IaC), Domain-driven Design (DDD), ERC-20, MassTransit, Architecture, Production

Languages

C#, C++, SQL

Libraries/APIs

Entity Framework, Microsoft Foundation Class (MFC) Library, Standard Template Library (STL), Windows Forms (WinForms), Visual Component Library (VCL), Microsoft Foundation Classes (MFC)

Paradigms

Azure DevOps, CQRS, Model View ViewModel (MVVM), Microservices, Test-driven Development (TDD), Refactoring

Tools

Microsoft Silverlight, Prism, RabbitMQ

Storage

Elasticsearch

Education

2011 - 2013

Master's Degree in Computer Science

Gdańsk University of Technology - Gdańsk, Poland

2008 - 2011

Engineer's Degree in Computer Science

Gdańsk University of Technology - Gdańsk, Poland

Certifications

AUGUST 2021 - PRESENT

TOGAF 9 Certified

The Open Group

FEBRUARY 2021 - FEBRUARY 2024

Microsoft Azure Solutions Architect Expert

Microsoft

FEBRUARY 2017 - PRESENT

Xamarin Certified Developer

Xamarin

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