Senior Java / Spring Engineer
Aktualisiert am 27.05.2024
Profil
Freiberufler / Selbstständiger
Remote-Arbeit
Verfügbar ab: 27.05.2024
Verfügbar zu: 100%
davon vor Ort: 100%
Java
Spring
Hibernate
JavaScript
Jenkins
MySQL
AWS
Gradle
Maven
IntelliJ
English
Fluent
German
Grundkenntnisse
Polish
Muttersprache

Einsatzorte

Einsatzorte

München (+500km)
Deutschland, Schweiz, Österreich
möglich

Projekte

Projekte

6 years 5 months
2018-01 - now

eCommerce systems for top photography equipment manufacturer

Spring Jquery Graphql ...
  • eCommerce systems for top photography equipment manufacturer, top Bundesliga football club and more.
  • Large scale Ticket reservation system for top Bundesliga club (greenfield microservice project)
  • Visual product configurator for B2B customers of top window shades/blinds manufacturer
    • Inhouse eCommerce platforms maintenance
    • migration from monolith to microservice/reactive architecture
    • new features/platforms architecture + development
    • Automated UI testing + Load testing
    • integration with customer ERP systems
    • Requirements analysis and delivering technical specifications
Spring Jquery Graphql REST Grpc Rsocket Reactor Docker Kubernetes SSO (Keycloak) Kafka Postgresql Mongodb Gradle Jenkins Ofbiz Idea Youtrack Git Gitlab Selenium Jmeter Loader.io Navision
ZYRES
Frankfurt/Main
1 year 10 months
2022-07 - 2024-04

Implementation of various cross-cutting concerns

Senior Java Backend Engineer Java 8/11/17 Kotlin Kafka ...
Senior Java Backend Engineer
  • Implementation of various cross-cutting concerns as a member of a general Technical Platform team for one of the highest traffic websites in german internet
  • Communication with functional teams and stakeholders, code reviews
  • Migration of 100+ microservices and monolith from legacy kafka clusters to multiple domain based kafka clusters, code cleanup and modernisation
  • Implementation of patterns responsible for maintaining consistency between datasources and kafka events delivery


Java 8/11/17 Kotlin Kafka Mirrormaker 2 Spring Boot Kubernetes Junit JIRA Git Github IntelliJ Scrum
(Ebay) Kleinanzeigen
Berlin / Remote
8 months
2021-10 - 2022-05

Credit Risk

Senior Java Backend developer Java core OneSumX Junit ...
Senior Java Backend developer
  • Implementation of custom software extensions to the customer Risk platform (OneSumX)
  • Refactoring of legacy code, application of software patterns and extensive unit testing
  • SCRUM based cooperation with an international team of Business Analysts - translating business requirements into technical specifications
Java core OneSumX Junit JIRA Git Bitbucket IntelliJ Scrum
Nord/LB
Remote, DE
6 years 6 months
2011-08 - 2018-01

Continuous integration of GUI frontend and middleware

Eurex Clearing GUI Full Stack Developer, JAVA Backend Developer GWT GXT Spring ...
Eurex Clearing GUI Full Stack Developer, JAVA Backend Developer
  • Working with Product Owners and translating business requirements into technical specifications and GUI/middleware implementations
  • Continuous integration of GUI frontend and middleware with financial backend systems (developed in parallel) and in-house infrastructure
  • Partial maintenance of the backend codebase responsible for GUI-backend integration (PL/SQL)
  • Development and maintenance of the common components shared across the GUI and middleware applications
  • Providing support during software installation on simulation and production environments
  • Processing end-user feedback, providing usability improvement solutions
  • Reporting to management using Agile toolset, following in-house standards for software development and maintenance
GWT GXT Spring Hibernate REST JMS PL SQL XML XSLT Junit Tomcat Rally Selenium RC Jenkins Eclipse GIT Gerrit
German Stock Exchange
Eschborn
7 months
2010-09 - 2011-03

In-house project planning

Hibernate Spring Spring-MVC ...
In-house project planning / issue tracking / release management application:
  • 6 months mission of porting of an existing cgi based web application into an open source based JEE stack.
  • analysys of the legacy software and gathering requirements for new features
  • architecting and implementation of the new application stack
  • providing usability improvements and database optimizations
Hibernate Spring Spring-MVC Jsp web services (apache cxf) JUnit jQuery Lucene Tomcat Oracle Ant Eclipse SVN
German Stock Exchange
Eschborn
5 years 1 month
2005-03 - 2010-03

Account Planning / Financial Reporting / Business Intelligence Tools

developer, architect EJB3 Hibernate Struts2 ...
developer, architect
  • a standard JEE n-tier applications running in a clustered JBOSS environment
  • developer/architect in a team of 6 java developers
  • translating customer informal requirements into system delivery specification
  • translating customer feedback into formal change requests
EJB3 Hibernate Struts2 Freemarker JUnit selenium-rc jQuery Jboss Oracle Mysql Maven2 Eclipse
Hoffman-La Roche
Warsaw, Poland
1 year 7 months
2003-09 - 2005-03

Insurance and Government Fund Management areas

Web application developer JavaServlets XSL HTML ...
Web application developer
  • implementation of data model, business services, web controllers
  • design and implementation of in-house MVC framework based on xslt
  • unit tests, integration tests, functional tests implementation
JavaServlets XSL HTML JavaScript XSD EJB2 PL/SQL Oracle Weblogic Ant Eclipse
Profi-Data
Szczecin, Poland

Aus- und Weiterbildung

Aus- und Weiterbildung

1998 - 2003

Software Engineering

Master of Science

Technical University of Szczecin, Poland


Focus:

Thesis: on request


Certifacation

English - FCE certificate

Position

Position

Senior Java /J2EE Engineer

Kompetenzen

Kompetenzen

Top-Skills

Java Spring Hibernate JavaScript Jenkins MySQL AWS Gradle Maven IntelliJ

Produkte / Standards / Erfahrungen / Methoden

Profile

  • 19+ years of experience in IT
  • 19+ years of experience as Java Backend Developer / JEE Developer

Einsatzorte

Einsatzorte

München (+500km)
Deutschland, Schweiz, Österreich
möglich

Projekte

Projekte

6 years 5 months
2018-01 - now

eCommerce systems for top photography equipment manufacturer

Spring Jquery Graphql ...
  • eCommerce systems for top photography equipment manufacturer, top Bundesliga football club and more.
  • Large scale Ticket reservation system for top Bundesliga club (greenfield microservice project)
  • Visual product configurator for B2B customers of top window shades/blinds manufacturer
    • Inhouse eCommerce platforms maintenance
    • migration from monolith to microservice/reactive architecture
    • new features/platforms architecture + development
    • Automated UI testing + Load testing
    • integration with customer ERP systems
    • Requirements analysis and delivering technical specifications
Spring Jquery Graphql REST Grpc Rsocket Reactor Docker Kubernetes SSO (Keycloak) Kafka Postgresql Mongodb Gradle Jenkins Ofbiz Idea Youtrack Git Gitlab Selenium Jmeter Loader.io Navision
ZYRES
Frankfurt/Main
1 year 10 months
2022-07 - 2024-04

Implementation of various cross-cutting concerns

Senior Java Backend Engineer Java 8/11/17 Kotlin Kafka ...
Senior Java Backend Engineer
  • Implementation of various cross-cutting concerns as a member of a general Technical Platform team for one of the highest traffic websites in german internet
  • Communication with functional teams and stakeholders, code reviews
  • Migration of 100+ microservices and monolith from legacy kafka clusters to multiple domain based kafka clusters, code cleanup and modernisation
  • Implementation of patterns responsible for maintaining consistency between datasources and kafka events delivery


Java 8/11/17 Kotlin Kafka Mirrormaker 2 Spring Boot Kubernetes Junit JIRA Git Github IntelliJ Scrum
(Ebay) Kleinanzeigen
Berlin / Remote
8 months
2021-10 - 2022-05

Credit Risk

Senior Java Backend developer Java core OneSumX Junit ...
Senior Java Backend developer
  • Implementation of custom software extensions to the customer Risk platform (OneSumX)
  • Refactoring of legacy code, application of software patterns and extensive unit testing
  • SCRUM based cooperation with an international team of Business Analysts - translating business requirements into technical specifications
Java core OneSumX Junit JIRA Git Bitbucket IntelliJ Scrum
Nord/LB
Remote, DE
6 years 6 months
2011-08 - 2018-01

Continuous integration of GUI frontend and middleware

Eurex Clearing GUI Full Stack Developer, JAVA Backend Developer GWT GXT Spring ...
Eurex Clearing GUI Full Stack Developer, JAVA Backend Developer
  • Working with Product Owners and translating business requirements into technical specifications and GUI/middleware implementations
  • Continuous integration of GUI frontend and middleware with financial backend systems (developed in parallel) and in-house infrastructure
  • Partial maintenance of the backend codebase responsible for GUI-backend integration (PL/SQL)
  • Development and maintenance of the common components shared across the GUI and middleware applications
  • Providing support during software installation on simulation and production environments
  • Processing end-user feedback, providing usability improvement solutions
  • Reporting to management using Agile toolset, following in-house standards for software development and maintenance
GWT GXT Spring Hibernate REST JMS PL SQL XML XSLT Junit Tomcat Rally Selenium RC Jenkins Eclipse GIT Gerrit
German Stock Exchange
Eschborn
7 months
2010-09 - 2011-03

In-house project planning

Hibernate Spring Spring-MVC ...
In-house project planning / issue tracking / release management application:
  • 6 months mission of porting of an existing cgi based web application into an open source based JEE stack.
  • analysys of the legacy software and gathering requirements for new features
  • architecting and implementation of the new application stack
  • providing usability improvements and database optimizations
Hibernate Spring Spring-MVC Jsp web services (apache cxf) JUnit jQuery Lucene Tomcat Oracle Ant Eclipse SVN
German Stock Exchange
Eschborn
5 years 1 month
2005-03 - 2010-03

Account Planning / Financial Reporting / Business Intelligence Tools

developer, architect EJB3 Hibernate Struts2 ...
developer, architect
  • a standard JEE n-tier applications running in a clustered JBOSS environment
  • developer/architect in a team of 6 java developers
  • translating customer informal requirements into system delivery specification
  • translating customer feedback into formal change requests
EJB3 Hibernate Struts2 Freemarker JUnit selenium-rc jQuery Jboss Oracle Mysql Maven2 Eclipse
Hoffman-La Roche
Warsaw, Poland
1 year 7 months
2003-09 - 2005-03

Insurance and Government Fund Management areas

Web application developer JavaServlets XSL HTML ...
Web application developer
  • implementation of data model, business services, web controllers
  • design and implementation of in-house MVC framework based on xslt
  • unit tests, integration tests, functional tests implementation
JavaServlets XSL HTML JavaScript XSD EJB2 PL/SQL Oracle Weblogic Ant Eclipse
Profi-Data
Szczecin, Poland

Aus- und Weiterbildung

Aus- und Weiterbildung

1998 - 2003

Software Engineering

Master of Science

Technical University of Szczecin, Poland


Focus:

Thesis: on request


Certifacation

English - FCE certificate

Position

Position

Senior Java /J2EE Engineer

Kompetenzen

Kompetenzen

Top-Skills

Java Spring Hibernate JavaScript Jenkins MySQL AWS Gradle Maven IntelliJ

Produkte / Standards / Erfahrungen / Methoden

Profile

  • 19+ years of experience in IT
  • 19+ years of experience as Java Backend Developer / JEE Developer

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