Jan Krajewski

SHOPPING SOLUTION FOR THE BANKING SECTOR - Maintenance and development of microservices supporting commercial processes, including orders, discounts, transactions, cashback, mainly in Microsoft technologies such as .Net Core (WebAPI, Entity Framework, Dapper), SQL Server, Azure Cloud (Service Bus, Functions, App Insights). - Managing the software development process using environments such as Team City, Bitbucket, Visual Studio, Git, Jira, Confluence and many others.

SAAS APPLICATION SUPPORTING WEALTH MANAGEMENT - Maintanance and development of software supporting financial business, mainly in Microsoft technologies such as .Net MVC, Entity Framework, SQL Server, Azure. - Support for the front-end side implementation using Razor, JavaScript, jQuery and other technologies. - Managing the software development process using environments such as Azure DevOps, Visual Studio, Git and many others.

INSURANCE SOFTWARE SOLUTIONS - Business web applications created in Microsoft technologies (.Net MVC, .Net Web API, WCF, WWF, Entity Framework, SQL Server and others) for an insurance company - Developed back-end and took part in front-end side of projects (JavaScript, jQuery, Razor, HTML, CSS) - Prepared unit tests using xUnit, Moq, AutoFixture - Took part in creating web services in .Net Core (Web API, MediatR, Entity Framework, SQL Server and others) - Used Angular 6, .Net Core, microservices in POC

E-LEARNING PLATFORM FOR SMART SPIN ORGANIZATION - Complex platform used by both company members and their clients, improving communication, offering different types of learning materials, complex courses, events, and advanced progress tracking. - .NET MVC application, fully responsive, featuring TypeScript and Less. - Developed back-end and took part in front-end side of the project.

SHOPEN E-COMMERCE PLATFORM - Multi-purpose redistributable shop solution for enterprise clients, focused on B2B solutions. - .NET MVC application, fully responsive, featuring multi-language support, TypeScript and Less. - Designed for extensive scalability and high performance in data-heavy environment. - Developed back-end and took part in front-end side of the project.

BUSINESS PROJECT FOR POLISH ENERGY SUPPLIER - Developed web customer service project in Java 8 and Java EE 7 (EJB, JSF, JPA). - Deployed solution for large number of customers. - Implemented advanced forms in JSF and Primefaces. - Extended project with JPA for building entities and JPQL for creating queries. - Used tools and technologies: Eclipse, SQL Server Management, JIRA, JBoss, SVN.

DEVELOPER IN CLIENT-CREATED SYSTEMS, ASSECO - Business application created in Java EE (EJB, JSF, JPA, JAX-WS). - Implemented advanced forms in JSF and Primefaces. - Created and consumed SOAP web services. - Introduced JPA for building entities and JPQL for creating queries. - Configured and performed performance tests using JMeter tool. - Used tools and technologies: IntelliJ IDEA, Sql Developer, JIRA, SoapUI, JBoss, SVN. - Worked with Scrum methodology.

GEOPORTAL FOR POLISH ENERGY SUPPLIER - Portal based on internet geodesy maps. - Project developed in Geomajas architecture which is based on: GWT, Spring, JDBC, Maven, etc. - Configured connections with defined WMS services. - Used tools and technologies: Netbeans, Sql Developer, Tomcat, SVN.

POC FOR AVIATION INDUSTRY - Project written in Java EE (Spring, JDBC, etc.) utilizing Predix platform and OSGI standard. - Used JAX-RS while creating REST APIs. - Developed complex queries and stored procedures in PL/SQL. - Used tools and technologies: Eclipse, Sql Developer, JIRA, Erwin, JBoss, Maven. - Worked with Scrum methodology and GIT version control system.

AVIATION BUSINESS WEB APPLICATION - Project written in Java EE (EJB, GWT, etc.). - Provided and developed connection to database using JDBC interface. - Developed complex queries and stored procedures in PL/SQL. - Used tools and technologies: Netbeans, Sql Developer, JIRA, Quality Center, Erwin. - Used version control systems: CVS, SVN, GIT. - Worked with Scrum methodology. - Offered support for internal client and testers.

SOLUTION FOR SIMPLIFICATION OF ACCOUNTING - Designed system architecture. - Developed project in following technologies: C++, Qt, QSS, Postgre SQL. - Created production version for various Linux distributions. - Used tools and technologies: Qt Creator, SVN and web2project. - Worked with Scrum methodology with a team of 3 undergraduates.

Faculty: Technical Physics, IT and Applied Mathematics. Institute: Software Engineering and Data Analysis. MSc thesis: Reactive network intrusion prevention.

Faculty: Technical Physics, IT and Applied Mathematics. Institute: Software Engineering and Data Analysis. BSc thesis: Advanced Web application interfaces in Spring Framework.