Vladimir Maznicenko - Java Developer for Banking Systems

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Brühl, Germany

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Experience

Mar 2023 - Jun 2024

1 year 4 months

Germany

Developer

Financial services provider

Support and further development of a framework for developing applications in a banking association: DynS/OSPE
Migration of the framework to Java 11 and Java 17
Java8, Java11 and Java17, Spring, Spring-Batch, Spring WebServices, Spring-Security, Spring-Data, JPA, Hibernate, OpenSource libraries etc.
XML, JAXB, JSON, REST and SOAP services, DB2, Oracle, WebSphere or Liberty AS, FreeMaker, Junit, mock libraries, JaCoCo, Maven, IntelliJ, Eclipse, GitHub, SVN, Jira

Aug 2022 - Dec 2022

5 months

Germany

Developer

Authorities

Development of an application to support companies under the Federal Immission Control Act
Java11 and Java17, Spring, Spring-Boot, Spring WebServices, Spring-Security, Spring-Data, JPA, Hibernate, OpenSource libraries etc.
XML, JAXB, JSON, JAX-WS, XSD, WSDL, REST and SOAP services, Swagger, KeyCloak, PostgreSQL, Oracle, Docker, Junit, mock libraries, Maven, IntelliJ, GitLab, agile development, Scrum, Jira

Feb 2022 - Jul 2022

6 months

Germany

Developer

Bank

Further development of the company’s internet and intranet portals
Creation and support of interfaces to external systems
Java11, migration Java8->Java11, Spring, Spring-Boot, Spring WebServices, Spring-Security, Spring-Data, JPA, Hibernate, OpenSource libraries etc.
Tomcat, XML, JAXB, JSON, JAX-WS, XSD, WSDL, REST and SOAP services, Confluence plugin development, Oracle, Junit, TestNG, Mockito, PowerMock etc., Maven, Eclipse, IntelliJ, Jenkins, GIT, BitBucket, Artifactory, agile development, Scrum, Jira

May 2021 - Dec 2021

8 months

Germany

Developer, Architect

Transport

Further development of a service portal for the company
Creation and support of interfaces to external systems
Portal and server-side development under a microservices architecture
Performance optimization of the application
Coordination of requirements and operational support of production
JEE development: Java11, Spring, Spring-Boot, Spring WebServices, Spring-Security, Spring-Data, Apache Camel, JPA, Hibernate, OpenSource libraries etc.
Tomcat, XML, JAXB, JSON, JAX-WS, XSD, WSDL, REST, Oracle, Angular, microservices, OpenShift, Swagger, JUnit, Mockito, Maven, IntelliJ, Jenkins, GIT, GitLab, DevOps, agile development, Scrum, Jira, Confluence

Jan 2019 - Mar 2021

2 years 3 months

Germany

Developer

Insurance

Further development of a life insurance system
Portal, batch, server-side development under a microservices architecture
JEE development: Java8, Spring, Spring-Boot, Spring WebServices, Spring-Security, Spring-Batch, Apache Camel, JPA, Hibernate, Dozer, MapStruct, OpenSource libraries etc.
IBM WebSphere, Tomcat, XML, JAXB, JSON, JAX-WS, XSD, WSDL, REST, DB2, microservices, OpenShift, Swagger, Splunk, JUnit, TestNG, Mockito, Selenium, Cucumber, Sonarqube, Maven, Eclipse, Jenkins, GIT, BitBucket, agile development, Scrum, Jira, Confluence

Oct 2018 - Dec 2018

3 months

Germany

Developer

Softwarehouse

Further development of the portal of an insurance company (product development SSO)
Development of libraries for using SSO login with STS and SAML protocol
Implementation in a microservices architecture
JEE development: Java8, Spring, Spring-Boot, Spring WebServices, Spring-MVC, Spring-Security, STS, SAML protocol
Tomcat, XML, JAXB, JSON, JAX-WS, XSD, WSDL, Microservices, Docker, JUnit, Mockito, Selenium, Cucumber, Maven, Eclipse, Subversion, Jenkins, GIT, Agile development, Scrum, Jira, Confluence

Jan 2017 - Sep 2018

1 year 9 months

Germany

Developer

Insurance company

Further development and support of the insurance company’s online presence
Development of frontend, backend and batch processes
Development of source code generation
JEE development: Java8, Spring, Spring-Batch, Spring-Boot, Spring WebServices (SOAP and REST), Spring-MVC, Spring-Security, JSP, Java-Script, JQuery, Bootstrap
Tomcat, XML, XSLT, JAXB, JSON, JAX-WS, XSD, WSDL, JPA, Hibernate, Dozer, PL/SQL, ICAP protocol (MacAffe server), JUnit, DBUnit, various mock libraries, Selenium, Oracle, SQLDeveloper, SOAP-UI, H2 etc., Maven, Eclipse, Subversion, Jenkins, GIT, EnterpriseArchitect, Agile development, Scrum, HPQC, Jira

Oct 2016 - Nov 2016

2 months

Germany

Developer

Insurance company

Analysis and support of several web applications as part of the insurance company’s web presence
JEE development: Java8, JPA, Web-Services, JSF, Spring, Spring-Boot, Hibernate, Jboss, XML, XSLT, JAXB, JUnit, mock libraries, Oracle, SQLDeveloper, H2 etc., Maven, Eclipse, Jenkins

Jan 2016 - Aug 2016

8 months

Germany

Developer, Coach

Authority

Development of a system for automatic data exchange
Batch process development and creation of the web application for monitoring and evaluating the data
Server-side development
JEE development: Java8, JPA, Web-Services, JSF (Prime-Faces), Spring, Spring-Batch, Hibernate, Jboss, XML, XSLT, JAXB, StAX, JAX-WS, WSDL, Dozer, MapStruct, Poi, JUnit, DBUnit, various mock libraries, Oracle, SQLDeveloper, XMLSpy, H2 etc., Ant, Eclipse, Git, Jenkins

Aug 2015 - Oct 2015

3 months

Germany

Architect, Developer

Bank

Analysis of the existing online banking application
Functional coordination and feasibility analysis of new extension requirements
Definition of the interfaces and implementation of prototype web services
Development of the interface and collaboration with service consumers
Java development: Java8, WebServices (SOAP), JAX-WS, Oracle, SQLDeveloper, Eclipse, XIP (Soffico), DIAMOS

Mar 2015 - Jul 2015

5 months

Germany

Developer

Authority

Further development of the web application across all layers: GUI with JSP and ADF Faces, service layer, and database queries
Porting the application from OC4J to WebLogic
JEE development: Java 5/6, OC4J, JSF (ADF Faces), Spring, Hibernate, JPA, JUnit, various mock libraries, Enterprise Architect, Oracle, SQL Developer, etc., Ant, Eclipse, Git, Jenkins, Scrum

Sep 2013 - Oct 2014

1 year 2 months

Germany

Developer

Insurance

Server-side development in a SOA architecture with Java 6/7 in a heterogeneous environment
Development of web services with various functionalities
Process development with an in-house BPM engine
JEE development: Java 6/7, JBoss, web services, BPM, SOA, Spring, JAXB, JAX-WS, XSLT, MQSeries, JUnit, various mock libraries, Dozer, etc., Enterprise Architect, CentraSite, Oracle, Squirrel, Hermes, etc., Maven, Eclipse, Jenkins

Apr 2012 - Jun 2012

3 months

Germany

Developer

Bayer AG

Development and maintenance of the TROUX application (Enterprise Portfolio Management Tool)
Configuration of the application
Creation of BIRT reports for Oracle
Creation of customized pages (JavaScript/JSP)
JSP, JavaScript, Tomcat, Oracle, PL/SQL, BIRT report

May 2011 - Feb 2012

10 months

Germany

Developer

Telko

Further development and maintenance of a billing and invoicing application
Server-side development in a JEE architecture for JBoss with EJB3, CDI, and JPA
Creation and integration of web services with CXF, Hibernate, and Spring
Use of Sybase, HQL, and SQL
Teamwork using agile development methods
JEE development: Java 6, JBoss, EJB3, JPA, CDI, web services, Spring, Hibernate, CXF, JUnit, mock libraries, Google Guava, Dozer, etc., Sybase, SQuirrel, Maven, Eclipse

Jan 2011 - Feb 2011

2 months

Germany

Developer, Tester

Bank

Setup of the test environment and maintenance of data exchange programs for the Tristan online banking system
Maintenance of batch programs using Spring Batch, Hibernate, and open-source libraries
Preparation of unit tests and integration of open-source products

Sep 2006 - Dec 2010

4 years 4 months

Germany

Developer, Tester

Bank

Further development and maintenance of a fund management application under a J2EE architecture with BEA WebLogic
Use of Struts, JSF, Hibernate and Spring
Frontend development: Javascript, JSP, CSS, Ajax etc.
Backend development: WebServices, EJB, HQL, SQL etc.
Carrying out and supporting tests as well as integrating open-source products
Teamwork using agile methods
J2EE development: Java5, BEA WebLogic, EJB, EJB-Patterns, WebServices, Struts, JSF, IceFaces, RichFaces, Spring, Hibernate, HTML, JSP, JavaScript, CSS, Ajax, Spring DWR, JUnit, Cactus, EasyMock, JMock, JFreeChart, etc., CruiseControl, FOP/XSL, DWR, Oracle, SQL Developer, Ant, Eclipse

Feb 2006 - May 2006

4 months

Germany

Developer

Automotive

Development of a control system under a J2EE architecture with BEA WebLogic and Struts
Work in frontend and backend development in an international project
Platform Windows
J2EE development: HTML, JSP, JavaScript, Struts, BEA WebLogic, EJB, JMS, EJB Patterns, JUnit, Cactus, Oracle (PL/SQL, StoredProcedures), Ant, Eclipse, TOAD, Mercury TestDirector

Sep 2005 - Dec 2005

4 months

Germany

Developer

Software development

Development of a content management system under a J2EE architecture
Mostly server-side development and frontend development with the Struts framework
Independent implementation of a use case requirement for creating a web application
J2EE development: HTML, JSP, JavaScript, CSS, Struts, OC4J, JBoss, EJB, JMS, Spring, Hibernate, JUnit, Cactus, Jakarta Commons, EasyMock, PostgreSQL, Oracle 9i, Maven, Ant, XML Processing, Eclipse

Mar 2005 - Jul 2005

5 months

Germany

Architect, Developer, Coach

Aerospace

Design, development and support during the rollout of an intranet application for automating design processes
Development under Apache/Tomcat with Struts and Hibernate
Use of C++ libraries under HP-UX
J2SE, Struts, Hibernate, web technologies (JSP, JavaScript, Servlets, JavaBeans), Tomcat, Oracle 9i, OCI driver, JUnit, Ant, GUI development patterns, C++ under HP-UX

Jun 2004 - Nov 2004

6 months

Germany

Developer, System Architect

Software

Development of an intranet application for monitoring, recording and supporting project execution in a software company (resource management)
Development under a J2EE architecture using open-source products
J2EE, web technologies (JSP, JavaScript, Servlets), Oracle 9i, Swing development, web development in Java (EJBs, JMS, JTA, JMX, JavaMail), XML processing (XMLSpy), JBoss, JUnit, Ant, J2EE patterns

Nov 2001 - Mar 2004

2 years 5 months

Germany

Developer, System Architect

Federal and State Tax Authorities

Creation of a unified tax administration system for tax offices (Fiscus)
Development of own class libraries under J2EE architecture
Application development for fines, criminal cases, tax investigation, and real estate transfer tax
Integration of new procedures into existing systems such as the Central Public Prosecutor Case Register (ZStV)
MDA-based development under J2EE architecture (4-tier), modeling with RationalRose (UML), web technologies (JSP, JavaScript, Servlets, EJBs, JMS), in-house class libraries and framework, Oracle 8i, client/server development, GUI development, web development in Java, XML processing, MPFJ, application servers (JBoss, OCI4J, BeanTA, Orion), JUnit, Ant, J2EE patterns

Apr 2001 - Sep 2003

2 years 6 months

Germany

Team Lead, Developer, System Architect

IT consulting placement agency

Development of a system for personnel management and project handling (Personal Project Planner)
Responsible for system design and development
Visual Basic 6.0 with SQLServer 2000 and Oracle 8/8i on Windows 2000
Integration of internet interfaces with ASP, MS IIS, Apache/Tomcat, Servlets, JSP, and JavaScript
Client/server programming in the front end (VB 6.0) and database area (T-SQL, PL/SQL)
Use of CrystalReports and porting to Windows 2000 as well as .NET architecture (VisualBasic.NET, ADO.NET, C#)

Apr 2001 - Oct 2001

7 months

Germany

Developer

Telecommunications

Expansion of a billing and invoicing system for T-Online (portal software programming, Infranet programming)
Setup of the premium services of the T-Online customer self-care interface
Web programming under J2EE architecture (4-tier) with EJBs, Servlets, JSP, iPlanet, Infranet server, and Oracle8i
Java and C/C++ programming under Windows and Solaris, front end, client/server and server programming, JBuilder, Oracle tools, Exceed, ClearCase, iPlanet

Aug 2000 - Mar 2001

8 months

Germany

Developer

Telecommunications

Development of the T-Info portal for Telekom
Implementation under J2EE architecture with BEA WebLogic, Gauss-VIP content management system, and Oracle8i
Development of external interfaces and helper applications, Oracle8 administration
Java, Oracle 8i (stored procedures), development under NT and Solaris, BEA WebLogic, J2EE, Servlets and JSP, HTML, FTP and RMI programming, Swing and AWT, Perl programming, ClearCase

Oct 1999 - Jul 2000

10 months

Germany

Developer

Telecommunications

Maintenance of a customer care and billing system (BSCS) for service provider Telepassport
Expansion and further development while supporting the billing system in the back office area
C/C++ and Perl programming under Windows and Linux
Further maintenance of the reconciliation component of the BSCS system
C/C++ development under NT and Linux, Perl programming, Oracle 8i (stored procedures), client-server programming, batch programming under Linux, ClearCase, Rational Rose, encryption methods

Apr 1998 - Aug 1999

1 year 5 months

Germany

Developer, Designer

Software House

Development and maintenance of the Security Administration Manager (SAM) of Schumann for comprehensive account and access management
Management of accounts and access rights on various target platforms (MVS, Unix, OS/2, Windows)
Development of client/server connections and encryption of communication
C/C++ and Java programming under MVS OS/390, OS/2, Solaris, HP Unix, AIX, Windows
C, C++, Java (JCE, JNI, Swing, RMI), client-server development, back-end development under OS/390, security and cryptography, CVS, JBuilder, MS Visual Studio, MFC, STL, CORBA

Apr 1997 - Mar 1998

1 year

Germany

Developer, Architect

Telecommunications

Development of the rating and billing system for T-Mobile (project IV’98)
Connection of front-end applications such as CustomerCare and CallCenters
Participation in the security committee and development of the crypto library for the internal client/server framework TFC
C++, in-house class libraries, Oracle 8i, client-server development under Sun Solaris, DEC Unix and Windows NT
3-tier architecture, modeling in Rational Rose (UML), ClearCase, MS Visual Studio, security and cryptography (Kerberos, RSA, Deffie-Hellman, block ciphers), MFC, STL, ATL

Industry experience

See where this freelancer has spent most of their professional time.

Experienced in Banking and Finance, Information Technology, Insurance, Government and Administration, Telecommunication, and Transportation.

Banking and Finance

Information Technology

Insurance

Government and Administration

Telecommunication

Transportation

Business area experience

See which departments and functions this freelancer has contributed to most.

Experienced in Information Technology, Product Development, Quality Assurance, and Finance.

Information Technology

Product Development

Quality Assurance

Finance

Skills

Main Focus: System Architect, Developer
Core Topics: Object-Oriented Development Of Web-Based Applications, Agile Development, Devops
Development Methods: Ooa, Ood, Oop, Uml, Xml, J2ee Patterns, Gui Development Patterns, Mda-Based Development Under J2ee, Soa And Bpm
Standards And Protocols: Jee, Ejbs, Xml, .Net, Various Encryption Methods, Http, Https, Icap Protocol, Sts, Saml
Programming Languages: Java, Xslt, Html, Javascript, Sql, Hql, T-Sql, Pl/Sql, C, C++, C#, Ado.Net, Visual Basic, Visualbasic.Net, Vb.Net, Perl, Uml
Application Servers, Jee, Web Servers, Frameworks: Spring, Spring-Batch, Spring-Boot, Spring-Mvc, Spring-Security, Spring-Data, Tomcat, Jboss, Weblogic, Websphere/Liberty, Oc4j, Hibernate, Cdi, Jpa, Jdbc, Cxf, Jaxb, Jax-Ws, Jsp, Jsf, Jquery, Angular, Dozer, Mapstruct, Docker, Apache Camel, Splunk, Swagger, Freemaker, Junit, Selenium, Cucumber, Mockito, Easymock, Jmockit, Powermock, Git, Gitlab, Github, Bitbucket, Maven, Jenkins, Ant, Struts, Richfaces, Icefaces, Primefaces, Fop, Xslt, Css, Custom Frameworks (Including Dyns/Ospe From Fi), Microsoft Mfc
Tools/Ide: Eclipse, Intellij, Jbuilder, Netbeans, Enterprisearchitect, Ibm Rational Rose, Cvs, Svn, Git, Cm Synergy, Clearcase, Hpqc, Exceed, Oracle Tools, Siemens Openft Tools, Ms Visual Studio, Ms Office, Crystalreports, Maven, Ant, Jenkins, Docker, Openshift
Database Systems: Oracle, Ms-Sql-Server 7 / 2000, Ms-Access, Db2, Postgresql, Sybase, Btrieve, Hsqldb, H2
Data Communication: Nt Networks, Internet/Intranet, Novell, Ftp, Tcp/Ip
Operating Systems: Linux, Ms Windows, Solaris, Os/2, Os/390, Mvs, Z/Os, Hp-Ux, Aix
Standard Software: Ms Office Professional (Word, Excel, Outlook, Powerpoint)
Industries: Finance (Banks And Insurance), Public Sector (Financial Administration), Software Development, Telecommunications, Transport, Airbus, Automotive, Research, Chemistry

Languages

German

Native

Russian

Native

Ukrainian

Native

English

Intermediate

Education

Diplom mathematician · Mathematics

Dr. rer. nat. · Mathematics

Statistics

Experience

Total positions 27

Experience in Banking and Finance 6.5 y

Avg length 11 m

Longest experience 4 y 3 m

Global experience

Countries worked in 1 (Germany)

Primary country Germany

Expertise

Recent roles Developer, Developer, Architect, Developer, Coach

Main industries Banking and Finance, Information Technology, Insurance

Main business areas Information Technology, Product Development, Quality Assurance

Qualifications

Highest degree Doctorate

Profile

Member since

August 2025

Last update

August 2026

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Frequently asked questions

Have questions? Find more information here.

Vladimir is based in Brühl, Germany.

Vladimir speaks the following languages: German (Native), Russian (Native), Ukrainian (Native), English (Intermediate).

Vladimir has at least 23 years of experience. During this time, Vladimir has worked in at least 9 different roles and for 18 different companies. The average length of individual experience is 1 year and 10 months. Note that Vladimir may not have shared all experience and actually has more experience.

Based on recent experience, Vladimir would be well-suited for roles such as: Developer, Developer, Architect, Developer, Coach.

Vladimir's most recent position is Developer at Financial services provider.

In recent years, Vladimir has worked for Financial services provider, Authorities, Bank, and Transport.

Vladimir is most experienced in industries like Banking and Finance, Information Technology, and Insurance. Vladimir also has some experience in Government and Administration, Telecommunication, and Transportation.

Vladimir is most experienced in business areas like Information Technology, Product Development, and Quality Assurance. Vladimir also has some experience in Finance.

Vladimir has recently worked in industries like Banking and Finance, Transportation, and Government and Administration.

Vladimir has recently worked in business areas like Information Technology and Product Development.

Vladimir holds a Doctorate in Mathematics.

The availability of Vladimir needs to be confirmed.

Daily rate distribution

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<€480 €480-640 €640-800 €800-960 €960+

The rates shown represent the typical market range for freelancers in this position based on recent contracts on our platform.

Average rates for similar positions

Rates are based on recent contracts and do not include FRATCH margin.

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Daily rate avg. 743 €

The average daily rate is the mean of all daily rates from recent contracts of comparable freelancers on our platform.

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Median rate 720 €

The median daily rate is the middle value of all daily rates — half of comparable freelancers charge less, half charge more. Unlike the average, it is barely affected by outliers.

Calculated based on our freelancers’ daily rates as of 6 Sep 2026. Actual rates may vary depending on seniority level, experience, skill specialization, project complexity, and engagement length.