Projects:
• Digital promotional payments solutions project living in Azure environment. Highly responsive application authorizing digital vouchers accepted by tills.

Tasks:
• Implementing application’s new features, including MVC functionality, REST APIs, Azure Functions
• Performing code reviews
• Introducing DevOps techniques via Azure DevOps

Tech stack:
C#, Git, SourceTree, Azure, Azure DevOps, MVC Core, MongoDB

C# Developer

I am teaching C#, Java Script and Java languages as bootcamp trainer and mentor.

C#, JS, Java instructor

Projects:
• Explain Everything Windows Store App. Application essentially is interactive whiteboard with collaboration features. At least versions on iOS and Android.
• Main goal was to implement collaboration feature when multiple people can share a common session – they can draw, write and record on one, shared whiteboard. Collaboration should be platform-oblivious, so Windows, Android and iOS versions of the app should be able to participate.
• Web version of the application - implementation of the app for web browser experience. This time it was implemented using JS and React.

Tasks:
• Increasing performance of the application
• Implementing new features
• Performing code reviews

Tech stack:
C#, XAML, Git, BitBucket, SourceTree, JIRA, JS, React

I was developing ETL application using C# and SQL.

Projects:
• For a company delivering wireless sensors net, I have implemented EventView component consisting of two controls and a controller:
    o EventMap (XamlMapControl) control for live display of data coming over from sensors net – displaying devices along with their detection range, alarms connected in a logical events, radar tracks and other warnings (tamper, low battery, missing heartbeat etc.).
    o EventList control for display of alarms connected in logical events and managing them – highlighting, clearing if false alarm (passing car, deer etc.), downloading images and videos from the devices etc.
    o EventEngine class responsible for grouping incoming alarms into logical events, based on several factors like time of occurrence, proximity etc. and passing data to EventControls for display.

Tasks:
• Gathering requirements from the client
• Planning tasks
• Implementing
• Performing demos for the client

Tech stack:
C#, WPF, Git, SVN, Redmine

Projects:
• Mosaic – sample management application handling sample ordering, storing in automated stores, freezers, using weighs, mixing compounds etc.

Tasks:
• Designing and developing software, mostly backend concerning ordering of the samples, also some exposure on WebForms frontend.

Tech stack:
C#, Oracle, ASP.NET, Java Script, WinForms, TFS

Software Engineer

Projects:
• VRT – application collecting and transforming data so it is kept in relational database like in an OLAP cube.
• Agamemnon – ETL application, developed in Java. Responsible for providing reports written in in-house developed language.
• DB provisioning automation – goal of the project was to provide automated database provisioning platform, decreasing the time required from months to days (hardware being a bottleneck here).

Tasks:
• Gathering requirements from internal client
• Planning tasks and semi-sprints (Kanban with two weeks timebox)
• Designing and developing software
• Refactoring code
• Taking care of continuous integration and deploymentC#, ASP.NET, NUnit, MS SQL Server

Tech stack:
Team City, IIS, Jira, SVN
Java, Spring Batch, Velocity, Angular, Oracle, Jira, SVN
C#, WCF, Oracle, Jira, SVN

C# Risk Developer

Projects:
• WinForms invoice life cycle software.

Tech stack:
WinForms, SQL, JIRA, SVN, integration with printer drivers via COM

In C++, I implemented an algorithm „A Simple OPT +1 algorithm for cutting stock under the modified integer round-up property assumption” utilizing COIN-OR solvers

Intern (C++ developer)

Projects:
• WPF ERP system managing work of gear factory.

Tech stack:
WPF, SQL, Entity Framework, JIRA, SVN

Projects:
• WinForms ERP systems. 
• E-shop using ASP.NET, integrated with PayPal payments.

Tech stack:
WinForms, SQL, TFS, ASP.NET WebForms

Most of my experience revolves around .NET ecosystem. In the beginnings I worked mostly with WinForms, WPF later and then moved to web side of things. Nowadays I work with .net core in many forms, Azure, CI via Microsoft DevOps, SQL and NoSQL altogether.

Most of my projects were using SQL under the hood. Usually Microsoft SQL but Oracle too. I am quite experienced in using SQL, optimizing queries and designing databases.

I'm NoSQL enthusiast and love to work with MongoDB. I use this in my everyday work for around a year now. I did pass official certification exam by Mongo.

Not much professional experience with Neo4j so far but I'm NoSQL enthusiast and would love to put my theoretical knowlegde into practice. I did pass official certifiation exam by Neo4j.

.NET Developer, Azure and NoSQL enthusiast, aspiring architect 

Sebastian Pietrzak

.NET core MVC application for organizing and managing tabletop tournaments. Initially implemented for Dust1947 wargamer but generic enough to support other game systems as well. 

Personal details

Sebastian P.

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