Jacek Duell

Project UBS

Web and web service based wealth management solution for Switzerland branch of UBS bank. System deployment consists of load balancer in front of web/ws based UI components and enterprise service bus to communicate with cluster of engine components for scaled calculations.

Responsibilities
- Design and implementation of cache solution for performance boost. Spring caching over ehcache. Multi node eviction/reload mechanism through publish/subscribe JMS communication. Bootstrap loaders for cache warm up.
- Analysis and implementation of business requirements from wealth management banking sub domain.

Technologies
Backend: Tomcat, Spring, JPA(Hibernate), SOAP,REST, JMS, ActiveMQ, IBMMQ, Camel
Database: H2, Oracle
CI: Maven, GIT, GitHub, Jenkins, Nexus, Sonar, Jira
Test: Junit, Spring Test, Mockito, DB Unit, Rest Assured
Client side: Angular JS
IDE: Intelij IDEA

Project Solarwinds

Web-based automated ticketing and asset management solution that helps to manage an IT support requests. It includes a web console with an integrated dashboard for performance reporting.
Key product features: automated ticketing system, asset management, reporting system, knowledge base, integration with various third party systems.

Responsibilities
- Design and implementation to meet the security requirements of Federal Information Processing Standards (FIPS)
- Leading the process of changing application architecture from WebObject based monolith to modular, extensible, easy to maintain, modern product. I based it on technological leap still with the full care of existing customers and theirs migration process. That is why I prepared, proposed and get acceptance of a product roadmap to reach the ultimate goal based on releasing in phases to bring value faster

Technologies
Server side: Tomcat, Spring, JPA (Hibernate), WebObjects
Database: H2, MS SQL Server, MySql, PostgreSQL
CI: Maven, GIT, Perforce, Team City, Artifactory, Sonar, Jira
Test: Junit, Spring Test
Client side: Angular JS, WebObjects
IDE: Intelij IDEA

ERP system in retail area; web applications with JEE 7 server side and AngularJS client side, continuous integration and delivery process with test pyramid containing unit tests (both junit with mocking and karma/jasmine for the client), integration in container tests with Arquillian, acceptance tests with REST client and end to end tests with Protractor/selenium web driver.

Responsibilities
- taking part in full software development process,
- requirements analysis, story map creation, development, test
- continuous delivery process design and development,

Technologies
Server side: Java Enterprise 7, CDI, EJB, JPA (Hibernate), JAX-RS, JMS, WebSocket, Batch API, JMX, Jasper Reports
Application Server: JBoss 8 Wildfly
Databases: H2, DB2, Oracle
Continous Integration: Maven, Jenkins, Artifactory, Sonar, JaCoCo
Tests: Arquillian, Junit, Mockito, EasyMock, JMockit, Karma/Jasmine, Protractor/Selenium web driver
Client side: Angular JS, Type script, Npm, Grunt
IDE: Eclipse, Visual Studio

01/2013 – 06/2013

Project
Web application for software discovery and usage analysis, cross time-zone Scrum

Responsibilities
- domain knowledge expert, database designing
- requirements analysis and development

Technologies
Ruby, Ruby on Rails, Sequel, MS SQL Server, Git, Jenkins, Javascript, JQuery


05/2011 – 12/2012
Additional responsibilities
- database design, performance tuning, ORM, REST services design and impl
- technical leadership of the team according to Scrum process
- responsibility for new release of the project, from new team member training, till on time rollout with additional features and over two times faster import
- technical candidates verification in recruitment process


IBM Software Engineer

09/2009 – 04/2011

Project
Web application for asset management domain, designed to store, manage software catalog and data exchange, multicultural, enterprise Scrum

Responsibilities
- design modules and implement requirements for the application
- cooperate with customers and demo the application
- prepare and tune queries in JPQL and native SQL
- awarded by IBM SWG Tivoli Cluster Excellence Award

Technologies:
Java 1.5, open JPA, Websphere, Derby, DB2, XML, REST, Ant, CruiseControl, JProfiler


07/2007 – 08/2009
Additional responsibilities:
- installer development using InstallShield Multi-Platform and shell scripting
- development of toolkit framework using Web services
- gathering customer intimacy, short time assignment in US, conducting project transition to India, providing 2 month remote learning sessions


IBM Junior Software Engineer
01/2007 – 06/2007

Project
Platform for distributed agent systems, OSGi based agent and enterprise server application on WebSphere, waterfall approach turned into Scrum

Responsibilities
- preparing patches with multi OS support for customer using Java and shell scripts

Technologies
Java 1.4, SQL, DB2, Derby, Oracle, Websphere, ISMP, SOAP, OSGi, Eclipse-Equinox

Automated UI testing, CMM process, international team, Java, Clear Case

On-line game service, Socoban and Sudoku games implemented, Java, PHP, SQL, CVS