Konstantin Pribluda - Architect / Developer / Full Stack

Q: Where is Konstantin based?

Konstantin is based in Vilnius, Lithuania .

Q: What languages does Konstantin speak?

Konstantin speaks the following languages: German (Native), Lithuanian (Elementary), Turkish (Elementary) .

Q: How many years of experience does Konstantin have?

Konstantin has at least 32 years of experience. During this time, Konstantin has worked in at least 21 different roles and for 50 different companies . The average length of individual experience is 1 year and 7 months . Note that Konstantin may not have shared all experience and actually has more experience.

Q: What is Konstantin's latest experience?

Konstantin's most recent position is Architect / Developer / Full Stack at XUSD DAO .

Q: What companies has Konstantin worked for in recent years?

In recent years, Konstantin has worked for XUSD DAO , DB Netz AG / Infra.GO , NDA Client , DVAG Frankfurt , and Krola GmbH .

Q: Which industries is Konstantin most experienced in?

Konstantin is most experienced in industries like Information Technology , Healthcare , and Banking and Finance . Konstantin also has some experience in Telecommunication , Aerospace and Defense , and Construction .

Q: Which business areas is Konstantin most experienced in?

Konstantin is most experienced in business areas like Information Technology , Operations , and Project Management . Konstantin also has some experience in Product Development , Quality Assurance , and Business Intelligence .

Q: Which industries has Konstantin worked in recently?

Konstantin has recently worked in industries like Information Technology , Healthcare , and Banking and Finance .

Q: Which business areas has Konstantin worked in recently?

Konstantin has recently worked in business areas like Information Technology , Operations , and Product Development .

Recommended expert

Vilnius, Lithuania

Check rate

Experience

Sep 2024 - Present

1 year 8 months

Architect / Developer / Full Stack

XUSD DAO

Development of smart contracts and trading front-ends for new crypto tokens (pegged to US dollar)
Contracts developed for an Ethereum-based blockchain
Front-ends with React
Including unit and end-to-end tests
Smart contracts with Solidity
Tests with Hardhat
Front-end with React/TypeScript/Node/vite/viem

Mar 2023 - Aug 2024

1 year 6 months

Full Stack Developer

DB Netz AG / Infra.GO

Development work on a video management platform for track videos
Management, delivery, and analysis of video recordings of DB routes for training, vegetation analysis, infrastructure inspection, and map display
Setting up a data warehouse for management to monitor filming and processing status in real time
Scheduled ETL processes to integrate and prepare data from various sources
Backend: Java, Spring Boot, JPA, Feign, REST, Python, Postgres, Thymeleaf
Frontend: Angular, TypeScript, Node.js, HTML, Less/Sass, Video.js, Jasmine, Protractor, npm
Build and CI/CD: GitLab, Maven, Cucumber
Operation on AWS: Lambdas, S3, SNS, Step Functions, CloudFormation

Jan 2023 - Feb 2023

2 months

Frontend / JavaScript Developer

NDA Client

Development of data extraction and scraping tools for websites
Development of userscripts for data collection and migration of non-cooperating websites
Plain JavaScript, Chrome browser, Tampermonkey APIs

Jun 2022 - Dec 2022

7 months

Backend Developer

DVAG Frankfurt

Development of backend microservices
Migration of Jenkins CI pipelines to GitHub Actions
Security audit of dependencies and business logic
Code review
Cloud-native application
Development and bug fixing of internal microservices (Spring Boot/OpenAPI/Feign)
CI migration to GitHub Actions for 35–40 individual services
Maven, Spring Boot, Spring Cloud, OpenFeign, OpenAPI Generator, Keycloak, Swagger, Java, Kotlin, Groovy, ActiveMQ, Spock (integration tests), Docker, Kubernetes, Azure deployment, MongoDB, Spring Data

May 2022 - Jun 2022

2 months

Fullstack Developer / Architect

Krola GmbH

Rapid application prototyping for clients using source code generators
Use of modern tools for fast architecture decisions
JHipster generators, Spring Boot, TypeScript, Yeoman, npm, Gradle, JPA, MongoDB, Keycloak/OAuth, Docker, React, Angular, Vue, microservices, Prometheus, Grafana, GraphQL

Mar 2022 - May 2022

3 months

Backend Developer / Architect

TAS Mönchengladbach

Upgraded training system for military radio communications to the latest technologies
Migrated build system to Gradle
Introduced unit tests
Migrated to Spring Boot
Updated to the latest Struts version
Cleaned up code and added documentation
Switched from JAXB to XStream
Improved the data model
Performed security audit of logic and dependencies
Refactored business logic
Conducted code reviews
Gradle, Java 11, Spring Boot, Struts 2/XWork, JUnit, Tomcat, Jakarta

Apr 2021 - Feb 2022

11 months

Full-Stack Developer / Architect

Voicecollect / ATIS / Uher

Cloud-based recording system for phone calls, video streams, and similar data for emergency services, police, call centers, air traffic control, and military
Designed architecture based on business requirements, project setup, backend and frontend development
Ensured test coverage at all levels
Microservice architecture with service gateway and load balancing
Angular frontend and reactive Spring Boot gateway communicating with microservices
Dockerized components with encrypted communication
Authentication with OAuth (Keycloak, other options possible)
Full-text search with Elasticsearch
Java, JavaScript, TypeScript, Spring Boot, Angular, React/Redux, Git, Gradle, Protractor, Cucumber, JUnit, JPA, REST, Liquibase, OpenID Connect, npm, Docker, Docker Compose, Keycloak, Eureka Discovery Server, Hystrix, Swagger/OpenAPI, JWT, GitLab CI/CD, GraphQL

Mar 2021 - Apr 2021

2 months

Developer / Architect

Motorsport (NDA Client)

Web-based geodata editor for racetracks
Fixed-price project with tight time and budget constraints
Full web application with React JS frontend, Spring Boot backend and database
User management and microservices architecture
Prepared for deployment on cloud platforms (GCP, AWS, Kubernetes, Docker)
Used modern source code generators
Integrated devices using MQTT
Java, JavaScript, React JS, Gradle, npm, Yeoman, Leaflet, MySQL, JPA, Spring Boot, microservices, JWT, Docker, GCP, AWS, JUnit, Jest, Cucumber, MQTT

Jan 2021 - Feb 2021

2 months

Developer / Architect

VW

Developed prototype of OAuth server with client credentials flow
Go, public key encryption, JWT, Docker, Kubernetes

Dec 2018 - Dec 2020

2 years 1 month

Developer / Architect

Smiths Detection

Full-stack software development in Java, Python, Shell
Automated regression testing and continuous integration with Jenkins/Cucumber
Conducted code reviews
Created build pipelines and installation packages
Developed JavaScript frontends (airport overview editor with SVG) integrated into JSF
Migrated from TCP to encrypted communication (SSL/TLS) for C applications and Java servers
Troubleshot and adjusted the ImageViewer Swing client
Performed security audit of dependencies
Linux, CentOS, JBoss WildFly, plain Java apps, JSP, JSF, EJB, J2EE, Cucumber, Python, SVN, SnapSVG, jQuery, PrimeFaces, Mojarra, web services, make, Git, CVS, Jenkins, Artifactory, Docker, virtualization (KVM), SSL/TLS, encryption, C/C++, Gradle, Java/Swing, single sign-on, Groovy, Python, RPM, Kanban, Scrum, Mockito, JMockit, JUnit, Spring, JPA

Jan 2018 - Feb 2018

2 months

Developer / Architect

Media

Switched the website to static generation
Removed the database as CMS backend
Simple authoring with Markdown
Templating with Jade/Pug
JavaScript, Node.js, deployment via script
Static website for performance and security
Node.js, JavaScript, Sass/Less, Markdown, Jade/Pug, Bootstrap, Wintersmith, Angular

May 2017 - Dec 2018

1 year 8 months

Developer / Architect

vwd Vereinigte Wirtschaftsdienste GmbH

Developed workflows, analyses and reports for portfolio management, data supply and MiFID 2
Java, Delphi, Haskell, Perl, JavaScript
Plugin development in IntelliJ IDEA
SVN, GIT

Jan 2017 - Apr 2017

4 months

Developer

ICW AG

Further development and maintenance of the portal application for blood glucose meters (Accu Check 360 Connect)
Bug fixing, adjustments and development of new features
Java 8, J2EE, JSF, Apache Tomcat, Oracle, MsSQL, Hibernate, JUnit, JMockit, Maven, Jenkins, Selenium, Kanban, Scrum

Jan 2017 - Feb 2017

2 months

Remote

Developer

Montafina GmbH

Software for data reconciliation when selling bank branches via remote desktop
Anonymized data reconciliation with CSV lists
Report generation
Java 1.4, JDBC, MS SQL, Eclipse, Jasper Reports

Aug 2016 - Sep 2016

2 months

Developer

Projektfabrik GmbH

Reverse engineering and overhaul of a legacy application in the capital gains tax area
Switching the database layer from DB2/Host/Adabas & Natural to PostgreSQL
Import of the source code into a GIT repository
Build with Maven and creation of Eclipse projects
Java/J2EE, Hibernate, JBoss, JSP, Struts 1, DB2, PostgreSQL, XML, Mockito, UML, DbUnit, Spring, Adabas, Natural

Apr 2015 - May 2015

2 months

Developer

Projektfabrik GmbH

Developed a REST wrapper for an existing EJB layer as part of a data migration project
Standalone Java application with integrated web server (Jetty)
API documentation with Swagger4J
Maven, Spring Boot, Spring REST, Spring-EJB, Jetty, Git, Gradle

Jun 2013 - Dec 2016

3 years 7 months

Senior Java Developer, Architect, Full Stack

Kosmos Banking / Montafina GmbH

Developed portals, tools, and business processes for private banking focusing on compliance, portfolio benchmarking, portfolio analysis, OLAP, and investment suggestions
Created investment performance reports with Aspose (portfolio valuation, monitoring investment guidelines)
Developed analysis tools with Saiku/Mondrian and Crossfilter/DC JS/Angular
Business processes for compliance checks and report generation with Aspose
Migrated SVN to GIT, CI with Jenkins, DevOps
Introduced unit tests with mocking (JMockit)
Developed an IntelliJ plugin for in-house BPM
Java 6–8, proprietary BPM, JavaScript (ExtJS, D3, Angular), Infinispan, Lucene/SOLR, Hibernate, Spring, Maven, IntelliJ IDEA plugin development, OLAP, Jenkins, Sonar, TDD, Kanban, Scrum, JIRA, GitLab, Cucumber, Groovy, JUnit, DbUnit, OAuth

Aug 2012 - Jun 2013

11 months

Senior Java Developer, Architect

DB Systel

Contributed to RIS (traveler information system) and FIS (internal train displays)
Architecture review and implementation
Integration of legacy systems
Implemented unit tests and monitored test coverage
Batch processing of audio data
Unix, Java, J2EE, Enterprise Architect, Maven, JDBC, SQL, JSF, Oracle, JPA, Hibernate, Git, JMockit, RichFaces, Facelets, EJB, Single Sign-On

Jan 2012 - Jul 2012

7 months

Senior Java Developer, Architect

Online Directory Services GmbH

Relaunched gelbeseiten.de including URL scheme change for better search engine indexing
Optimized performance and ensured test coverage
Refactored and migrated to Spring configuration and stateless operation
Distributed system across multiple data centers for reliability and performance
Communication using Hessian/CXF
Java, Tomcat, Apache HTTPD, Apache Solr, Struts 1, JSP, JavaScript, JMockit, JUnit, Maven, Eclipse, CAS/Spring-Security, Hessian, SAML, Kanban, Scrum

Sep 2011 - Dec 2011

4 months

Senior Java Developer, Senior Java Architect

Imperia AG / Deka Investment

Developed and integrated custom CMS modules in BEA WebLogic Portal
BEA WebLogic, Maven, Jenkins, Java, Spring MVC, Pirobase CMS, Velocity, jQuery, JavaScript

Apr 2011 - Sep 2011

6 months

Senior Java Developer, Senior Java Architect

SYNYX GmbH

Consulting and development for customer projects of 1&1 / Karlsruhe
Integration of standalone software with calendar and appointment databases via CardDAV/CalDAV, storage in Open-Xchange
Development of provisioning adapters for third-party middleware between webshop (Intellishop), billing system and application providers
Java, Apache CXF, Apache Tomcat, JPA/Hibernate, REST, SoapUI, MySQL, Apache Wicket

May 2010 - Present

16 years

Technical Project Manager

MEI GmbH

Overall software development and offshore team leadership for control software of a bone densitometer
Creation of requirements specifications, QA, acceptance and handover
Architecture, coaching and a part-time permanent position with profit sharing

May 2010 - Mar 2011

11 months

Development and Deployment Support

Deutsche Telekom AG

Support for development and technical architecture consulting
Development of various adapters, connectors and integration scenarios in JBoss ESB
Design and execution of test procedures for acceptance and performance tests
Introduction of Maven
J2EE, JBoss, jBPM 4, ESB, SOA, Maven, Eclipse, SoapUI

May 2010 - May 2010

1 month

Instructor

Nürnberger Versicherungsgruppe

Development and delivery of a five-day training course on JBoss ESB and jBPM 4
Preparation of training materials including hands-on exercises

May 2010 - May 2010

1 month

Instructor

Prodyna GmbH

Development and delivery of a half-day intensive training for jBPM 4 developers

Apr 2010 - Apr 2010

1 month

Consultant

Deutsche Telekom / ZIT

Troubleshooting and customizing jBPM management tools for new process versions

Mar 2010 - Apr 2010

2 months

Consultant

SCHUFA Holding AG

Advice on improving build and test processes
Focus on build and automated testing
Eclipse, Ant, Maven, JUnit, XDoclet, Java, Oracle, EJB 3, Struts 1/2, JSP

Feb 2010 - Feb 2010

1 month

Developer

Own development (Open Source)

Developed a JSON marshalling library for the Android platform
Lightweight library (~4 KB) with no external dependencies
Google Android 1.5+, Java

Jan 2010 - Apr 2010

4 months

Developer

T-Systems (Darmstadt)

Developed and integrated tools and libraries for quality assurance and SLA monitoring for a stats application
Java, Jasper Reports, JasperServer Pro, Spring MVC, Maven, Groovy, SoapUI, JMeter, Spring AOP, Hibernate, Tomcat, shell scripts

Nov 2009 - Feb 2010

4 months

Developer

Own development

Developed an ad-supported game for the Android platform
Released on the App Store with over 10,000 downloads
Java, Android SDK 1.5–2.1, IntelliJ IDEA

Nov 2009 - Dec 2009

2 months

Consultant

DB Systel

Ten-day consultancy on introducing ActiveMQ as an alternative to MQ-Series
Creation of high-performance and fault-tolerant configurations
Integration with existing MQ-Series installations
ActiveMQ 2.3, MQ-Series 6.1, Groovy, Java, XML, Spring, Bash, Linux

Nov 2009 - Nov 2009

1 month

Instructor

Brockhaus GmbH / Digital River

Delivered a three-day course on Servlet API, J2EE and Spring MVC
Developed training materials and hands-on exercises

Aug 2009 - Nov 2009

4 months

Developer

United Internet (1&1)

Optimized and enhanced an ACS for TR-069-compliant CPEs after acquiring a competitor
Integrated new CPEs (AVM Fritz!, Samsung) into existing ACS infrastructure
Performance tuning and bug fixes
Adjusted Tomcat cluster for overnight CPE updates (4–5 million requests between 01:00 and 05:00)
CPEs, Apache HTTPD, Java, J2EE, Groovy, Servlets, SOAP (XFire, Axis), TR-069, JUnit, JPA/Hibernate, MySQL

Apr 2009 - Jun 2009

3 months

Test Automation

T-Home

Developed and executed test cases for business logic implemented in BPEL
Ran and analyzed tests with SoapUI
Provided feedback to architects and developers
Oracle BPEL Server, various application servers, Web Services, SoapUI, Groovy, Java, XML, XSLT, XPath

Dec 2008 - Apr 2009

5 months

Developer

Neckermann Versand AG

Developed high-performance applications for XML transformation and parsing of large (> 1 GB) files
ETL applications for Demandware and SAP imports/exports
Integration into WebSphere Process Server
UNIX/Linux, IBM WebSphere 6.1 (WID, ESB, Process Server), Talend OS, MySQL, Maven, Eclipse, XML, StAX, XMLBeans, JUnit, DBUnit, JDBC, Hibernate, Adabas/Natural

Aug 2008 - Dec 2008

5 months

Consultant

Lufthansa Systems

Evaluation of various ESB products (Proof of Technology) to improve SOA infrastructure
Implementation of typical integration scenarios
Development of operational concepts and developer guidelines
Execution of performance tests in various configurations
Documentation of results
Sopera, Apache ServiceMix, Eclipse, Ant, Maven 2, BEA WLS 9.x/10.x, Tomcat, JBoss 4.2.2, TIBCO, MQ Series, Linux SLES 10.x, ActiveMQ, Joram, Talend OS, BPEL, Apache ODE, Perl

Jan 2008 - Jun 2008

6 months

Developer

Fraport AG

Participated in the "Barcode Boarding Pass" project
Developed a distributed application for checking barcode-based boarding passes
Swing frontend with barcode scanner integration
Workgroup server for frontends (Java, DI with PicoContainer/Spring or JBoss SLSB)
MDB/SLSB-based backend server on IBM WebSphere 6.x
MQ-Series for distribution of flight data and statistics

Jan 2008 - Jan 2008

1 month

Consultant

Deutsche Post AG / Printcom

Consulting and troubleshooting a mission-critical distributed application based on JBoss and Hibernate
Performance optimization of large data retrievals with Hibernate
Eclipse RCP frontend, Oracle RDBMS

Oct 2007 - Oct 2007

1 month

Instructor

Verband Süddeutscher Apotheker

Four-day training in J2EE, EJB 3.0, web services, JMX administration, and JBoss configuration

Jun 2007 - Jun 2007

1 month

Instructor

Nokia Siemens Networks

Three-day training on servlets, JMX, SIP, and JBoss on behalf of OiO GmbH

Sep 2006 - Dec 2007

1 year 4 months

Developer / Architect

T-Online International

Creation of admin frontends for business processes (jBPM/BPEL)
Development of web services and queue adapters for MQ-Series and Oracle AQ
Development of admin tools for Oracle OC4J (JMX)
Adaptation of stored procedures in Oracle DB
Java, J2EE, BEA WLS 8.1.4/9.x, Ant, Maven 2, XDoclet, Eclipse, WebWork 2 (Struts 2), Velocity, Hibernate, Oracle RDBMS, PL/SQL, Pico/Nanocontainer, HTML, CSS, Dojo/AJAX

Apr 2006 - Aug 2006

5 months

Consultant

DBV-Winterthur

Consulting on the rollout of JBoss 4 into production focusing on security, SSL, monitoring, and operational support
JBoss 4, Solaris 10

Mar 2006 - Mar 2006

1 month

Instructor

Telenet GmbH

Two-day workshop on WebWork 2 and modern web technologies including material preparation and exercises
Hibernate, IoC, project organization with Maven

Jan 2006 - Jan 2006

1 month

Consultant

T-Online MMS

Troubleshooting an EJB application on behalf of Brockhaus GmbH
JBoss, J2EE

Sep 2005 - Dec 2005

4 months

Instructor

Brockhaus GmbH

Multiple J2EE training courses on behalf of Brockhaus GmbH/Tria

Apr 2005 - Apr 2006

1 year 1 month

Portal Developer

Kessel Systems

Developed a planning and configuration portal for an online game
Linux, MySQL, JBoss, Tomcat, Hibernate, Pico/Nanocontainer, Velocity, HTML, CSS, WebWork, Maven, Perl/Awk for game data preparation and extraction tools

Dec 2004 - Apr 2005

5 months

Developer

T-Online

Developed a B2B portal application on BEA Portal Server
Integrated with CoreMedia CMS and SAP backend systems
Customized the portal design with CSS
Oracle database

Jan 2003 - Dec 2004

2 years

Project Manager

Information Desire GmbH

Developed an information portal for the civil engineering industry (unitracc.de)
JBoss, WebWork, Velocity, Pico/Nanocontainer, Hibernate, MySQL, Java 1.4, XDoclet 2, HTML, CSS
In-house development: portal framework, validation framework, security/authentication, XDoclet modules, CMS

Aug 2002 - Oct 2002

3 months

Developer

UKW Wiesbaden

Developed a billing system for logistics companies
J2EE, EJB, Swing frontend, PDF reporting

Jan 2001 - Apr 2002

1 year 4 months

Technical Project Manager

Deutsche Bank AG (SEHK)

Developed a portal for currency and precious metal logistics
J2EE (EJB, JBoss, JSP, JAAS, Struts), Ant, XDoclet, Oracle

Jan 2000 - Present

26 years 4 months

Developer, Operator

MEI GmbH

Development and operation of the web platform
Linux, Apache, mod_perl, HTML::Mason, Postgres, MySQL, HTML, CSS

Jan 1999 - Dec 2001

3 years

Developer

Deutsche Telefon AG

Development and operation of the web platform and billing software
Linux, Apache, mod_perl, HTML::Mason, Postgres, Adabas, Awk, Shell, batch processing of CDRs with Perl/Awk

Jan 1995 - Dec 1999

5 years

Developer, Technical Project Lead

MEI GmbH

Medical video archiving and processing (DICOM)
System for archiving cardiac catheterization procedures
Sun/Solaris and SGI IRIX
C/C++ with Motif/X11, scripting subsystems, assembly, Awk, Perl, Shell, CD burner

Jan 1994 - Dec 1995

2 years

Developer

City Fitness

Development of a point-of-sale system for a fitness studio with integration to inventory and membership management
Windows 95, Visual Basic, VBA, MS Access

Industry Experience

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

Experienced in Information Technology, Healthcare, Banking and Finance, Telecommunication, Aerospace and Defense, and Transportation.

Information Technology

Healthcare

Banking and Finance

Telecommunication

Aerospace and Defense

Transportation

Business Area Experience

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

Experienced in Information Technology, Operations, Project Management, Product Development, Quality Assurance, and Business Intelligence.

Information Technology

Operations

Project Management

Product Development

Quality Assurance

Business Intelligence

Summary

Technical focus areas:

Java
Microservice architectures
OAuth
Spring Boot
Docker
Test automation with Selenium / Cucumber / Protractor
Portal development
Framework design
Integration of open-source frameworks
Build and configuration
Automated source code generation using XDoclet or similar tools
Content management
Persistence
ORM
Setting up test environments
Mocking
ETL
J2EE
JSF
SVG
Mojarra
PrimeFaces
Java
Mobile applications with Android
JavaScript
Data visualization
OLAP
OOA
OOD
XML
JSON
Reporting (Crystal / Aspose)
CI
DevOps

Industries:

Banking
Insurance
Telecommunications
Medical technology
Logistics
Civil engineering
Education
Aviation
Security
Shipping
Retail
Finance

Miscellaneous:

Active co-developer of various open-source projects (XDoclet 1&2, struts1, xword/webwork (truts 2), pico/nanocontainer, javaocr, andject, JSON Serializer, own projects). Deep knowledge of related and used open-source projects, as well as personal acquaintance with their developers.

Publications:

Java Magazin 2.2003: "XDoclet EJB development made easy"
Java Spektrum 5.2006: Article on dependency injection with PicoContainer

Speaker:

JAX 2003, source code generation using XDoclet

Skills

Operating Systems:

Google Android
Cp/m (Basic Knowledge)
Real-time Operating Systems
Hpux: Administration, Programming
Irix: Administration, Programming, Troubleshooting
Ms-dos: Programming, Administration
Osf/motif: Programming
Rsx-11
Rt-11
Sun Os, Solaris: Administration, Application Development
Unix: Administration, Programming (Mostly Linux), Web Server Operation, Installation, Firewall Configuration
Windows: Programming, Administration

Programming Languages:

Assembly (Mips, Sparc, Intel, Pdp): Development Of Image Codecs (Lossless Jpeg)
Basic: Various Small Projects, Access, Asp
C: Medical Image Processing, Programming Under Unix, Gui Programming With Motif
C++: Libraries For Dicom Standard, Medical Image Processing, Gui Programming (Irix), Data Conversion Applications
Corba Idl
Delphi: Database Application Programming
Emacs Lisp: Daily Use, Small Programs
Forth: Advanced Knowledge, Graphical Programming, Postscript
Fortran
Gupta / Centura (Basic Knowledge)
Imake, Gnu Make, Makemaker, Etc.: Daily Use, Creating Makefiles, E.g., With Autoconf/automake
Java, Javascript: J2ee, Ant, Xdoclet, Ejb, Jboss, Velocity, Struts, Webwork, Jedit, Applet Programming
Lisp: Emacs Programming, Gimp Scripting
Macro Languages: M4 (Sendmail, Autoconf/automake)
Machine Languages: Sparc, Mips (O32, N32, N64), Intel, Pdp / 68xxx
Pascal
Perl: Scripting For Os Administration, Web Server (Html::mason), Database Programming (Dbi, Persistent), Data Conversion And Preparation, Log Processing, Call Data Processing
Php: Website Development
Prolog: Small Programs
Python
Scripting Languages: Beanshell, Jelly, Jython, Groovy
Unix Shell: Scripting For Os Administration (Bash, Csh, Sh, Etc.), Use In Medical Image Processing
Tex, Latex
Vrml
Xt, Motif, Xmt, Gtk: Gui Development Under X11
Yacc/lex
Opengl
S-5 Simatic
Html, Css

Databases:

Access
Adabas
Approach
Bde
Dao
F&a
Jdbc
Ms Sql Server
Msql / Mysql
Odbc
Oracle
Postgres (From 7.0, E.g., As Ejb Persistence Layer)
Sql
Solid Experience With Object-relational Mapping Using Hibernate

Software Packages And Tools (Selection):

Java: J2ee (Ejb, Jsp, Jsf, Servlet), J2se, Jmx
Jca (Connection Pools, Transactions, Jndi, Jrmp)
Aop, Aspect-oriented Programming, Xdoclet (Contributor / Committer)
Messaging: Mq Series, Oracle Aq
Ioc: Pico/nanocontainer (Committer), Customization Of Various Open-source Frameworks (Hibernate, Webwork)
Applet Programming (Java Games, Applets For Data Entry)
Bcel (Byte Code Engineering Library)
Junit: Test Development And Execution, Organization And Setup Of Test Environments

Application Servers:

Jboss (3.x, 4.x): Various Web/ejb Projects, Administration And Operation
Bea Weblogic (8.1), Bea Portal, Bea Workshop
Ibm Websphere

Persistence:

Castor Jdo
Jaws
Hibernate

Templating And Web Development:

Jakarta Velocity
Servlet Programming
Jsp Development
Swing / Awt: Front-end Development (Gui For Xdoclet, Jedit Plugin, Ejb Client Applications)
X11 Gui Development: Motif, Xmt, Gtk

Pdf And Reporting:

Report Generation As Pdf (Velocity, Xslt, Xsl:fo, Fop)

Full-text Search:

Development Of Search Systems (Lucene-based)

Content Management:

Custom Developments Based On Hibernate

Open-source Products (Use / Contributions):

Perl
Apache Httpd
Tomcat / Catalina
Jboss
Ant
Xdoclet / Xdoclet-2
Webwork
Middlegen
Xdocletgui
Eclipse
Cvs
Struts
Jedit (Including Plugin Development)
Velocity
Beanshell
Fop
Pico/nanocontainer
Lucene

Xml Technologies:

Jaxp, Dom, Sax, Xerces, Xalan, Xslt, Docbook
Xstream, Xpp3, Pull Parser

Additional Database Experience:

Mysql: Database-driven Websites, Faq Management, Content Management
Msql: Medical Image Processing
Postgres: Database-driven Websites
Oracle: Views & Queries, Persistence Layer In Banking Environment
Mckoy / Hypersonic: Use In Jedit And Jboss

Application Frameworks:

Struts: Use In Banking Projects, Development Of Tag Libraries, Automatic Generation Of Form Beans
Webwork: Use In Web Development
Html::mason: Creation Of Complex Websites And Cms

Configuration Management:

Cvs: Daily Use, Repository Organization
Clearcase

Multimedia Programming:

Jpeg (Own Codec For Lossless Jpeg)
Dicom-compliant Image Data
Video Grabbing & Processing (Sgi, Parallax Graphics, Optibase, Edt)

Documentation Generation:

Anakia
Docbook
Confluence

Methods:

Languages

German

Native

Lithuanian

Elementary

Turkish

Elementary

Education

Oct 1994 - Jun 1999

FH Wiesbaden

Computer Science · Wiesbaden, Germany

Oct 1989 - Jun 1994

IFMO

Saint Petersburg, Russian Federation

IFMO

Dipl. Ing., Systems Engineering · Systems Engineering · Saint Petersburg, Russian Federation

Statistics

Experience

Total positions 54

Experience in Information Technology 26.5 y

Avg length 1 y 5 m

Longest experience 26 y 3 m

Expertise

Recent roles Architect / Developer / Full Stack, Full Stack Developer, Frontend / JavaScript Developer

Main industries Information Technology, Healthcare, Banking and Finance

Main business areas Information Technology, Operations, Project Management

Qualifications

Highest degree Master

Profile

Created

August 2025

Last Update

April 2026

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Frequently asked questions

Do you have questions? Here you can find further information.

Where is Konstantin based?

Konstantin is based in Vilnius, Lithuania.

What languages does Konstantin speak?

Konstantin speaks the following languages: German (Native), Lithuanian (Elementary), Turkish (Elementary).

How many years of experience does Konstantin have?

Konstantin has at least 32 years of experience. During this time, Konstantin has worked in at least 21 different roles and for 50 different companies. The average length of individual experience is 1 year and 7 months. Note that Konstantin may not have shared all experience and actually has more experience.

What roles would Konstantin be best suited for?

Based on recent experience, Konstantin would be well-suited for roles such as: Architect / Developer / Full Stack, Full Stack Developer, Frontend / JavaScript Developer.

What is Konstantin's latest experience?

Konstantin's most recent position is Architect / Developer / Full Stack at XUSD DAO.

What companies has Konstantin worked for in recent years?

In recent years, Konstantin has worked for XUSD DAO, DB Netz AG / Infra.GO, NDA Client, DVAG Frankfurt, and Krola GmbH.

Which industries is Konstantin most experienced in?

Konstantin is most experienced in industries like Information Technology, Healthcare, and Banking and Finance. Konstantin also has some experience in Telecommunication, Aerospace and Defense, and Construction.

Which business areas is Konstantin most experienced in?

Konstantin is most experienced in business areas like Information Technology, Operations, and Project Management. Konstantin also has some experience in Product Development, Quality Assurance, and Business Intelligence.

Which industries has Konstantin worked in recently?

Konstantin has recently worked in industries like Information Technology, Healthcare, and Banking and Finance.

Which business areas has Konstantin worked in recently?

Konstantin has recently worked in business areas like Information Technology, Operations, and Product Development.

What is Konstantin's education?

Konstantin holds a Master in Systems Engineering from IFMO.

What is the availability of Konstantin?

Konstantin is immediately available full-time for suitable projects.

What is the rate of Konstantin?

Konstantin's rate depends on the specific project requirements. Please use the Meet button on the profile to schedule a meeting and discuss the details.