Zsolt Lazar - Fullstack Developer for Java and React

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Košice, Slovakia

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Experience

Jul 2025 - Present

1 year 3 months

Fullstack developer

BE: Java/Spring Boot, JMS
FE: React
Implementation of new functionalities in applications for railways industry and highways

Jan 2024 - Jul 2025

1 year 7 months

Fullstack developer

Twinformatics

BE: Nest, Express, API
FE: Angular 16, IntelliJ Idea
Implementation of a new application for car insurance processing for Wiener Städtische Versicherung and Donau Versicherung

Feb 2023 - Dec 2023

11 months

Vienna, Austria

Fullstack developer

Vienna Airport

BE: Java/Spring, Oracle
FE: Angular, ES6
BE: Spring, Hibernate, IntelliJ Idea
Air transport data processing, migration of legacy applications

Feb 2021 - Jan 2023

2 years

Austria

Fullstack developer

Plasser & Theurer

BE: Java/Spring/Akka, MongoDB, Docker
FE: React, Resium, Angular 8–11/RxJS, Cesium Maps, Highcharts, ES6
Hibernate, IntelliJ Idea
Virtual Track: collecting and processing data from measuring and tamping machines, 3D point-cloud processing and visualization, measurements

Jan 2020 - Apr 2021

1 year 4 months

Fullstack developer

Twinformatics

BE: Java/Spring
FE: Angular 9/Redux, IntelliJ Idea
Implementation of a new application for car insurance processing for Wiener Städtische Versicherung and Donau Versicherung

May 2018 - Dec 2019

1 year 8 months

Austria

Fullstack developer

Plasser & Theurer

BE: Java/Spring/Akka, MongoDB, Docker
FE: Angular 7, ES6
Hibernate, IntelliJ Idea
Virtual Track: collecting and processing data from measuring and tamping machines

May 2017 - Sep 2018

1 year 5 months

React/Redux, Spring Cloud, Node.JS Microservices developer

Liquid Tool Systems AG

BE: microservices in Node JS and Java/Spring, Spring Cloud, Spring Boot, MySQL, MongoDB, Hibernate, Docker
FE: React/Redux, ES6, IntelliJ Idea
IoT IS: collecting measurements from IoT devices and processing data in the cloud

Dec 2016 - Feb 2017

3 months

Fullstack developer

Danubesoft, s.r.o.

Angular 2, TypeScript, Java/Spring, Hibernate, IntelliJ Idea, PostgreSQL, Jira
Voucher system for gambling companies

Jan 2016 - May 2017

1 year 5 months

Developer

Danubesoft, s.r.o.

J2EE, Spring, GWT, AOP, Hibernate, MyBatis, IntelliJ Idea, Oracle DB, Jira
IS supporting back office and customer service for T-Mobile Austria

Jan 2015 - Dec 2015

1 year

Teamleader, JEE developer

Axasoft, s.r.o.

J2EE, EJB, EclipseLink, JSF, PrimeFaces, Liquibase, AOP, WebLogic, NetBeans, IntelliJ Idea, Oracle DB, Jira
IS for processing agricultural subsidy applications for the Ministry of Agriculture

Oct 2014 - Jan 2015

4 months

JEE developer

Crif Slovak Credit Bureau

Software maintenance, implementation, customer support
JEE, web services, XML/XSLT, jQuery, jMeter, Eclipse, MS SQL DB
Process management software in banking

Apr 2014 - Dec 2014

9 months

Slovakia

JEE developer

Tatra banka, a.s.

J2EE, Spring, REST/JSON, Jackson, AOP, NetBeans, GIT, Agile/Scrum, jMeter, Google Analytics, JUnit, Mockito
Mobile banking backend and middleware

Jan 2014 - Apr 2014

4 months

Frontend and backend Programmer

Wirecard AG

Ruby on Rails, J2EE, Spring, Eclipse, Mercurial, Agile/Scrum/Kanban, UML, JIRA, JUnit
Mobile banking registration process for paycards and NFC devices

Oct 2011 - Dec 2013

2 years 3 months

Slovakia

Frontend and backend programmer

Asseco CE

J2EE, Spring, Rational Rose, Eclipse, Informix, SQL, Hibernate, Mercurial, Agile/Scrum/Kanban, UML, JIRA, JUnit, Mockito, PowerMock
Integrated IS for largest Slovak insurance company (VsZP)

Aug 2005 - Oct 2011

6 years 3 months

Frontend Developer

Dupres Consulting s.r.o.

Tomcat 5.5, PostgreSQL, MySQL 5.0, Eclipse 3.2.2, JSP, MyFaces, JBoss RichFaces, Oracle ADF, CVS, SVN, Windows XP, SUSE Linux, FOP, Oracle, PostgreSQL
MAIS: modular academic information system frontend development and bug fixing for universities

Feb 2005 - Jul 2005

6 months

Oracle Forms/Designer Programmer

Delta e.s. (NESS Technologies)

Oracle Designer 2000/6i, Oracle Forms, Reports, SQL Navigator, CVS, MS Visual SourceSafe, Windows NT/2000/XP, Java J2EE, JSP, HTML, JavaScript, IE, Tomcat 4.1, XML, CSS
Integrated accounting and store IS for energy companies and flat co-ops

Oct 2002 - Feb 2005

2 years 5 months

Frontend programmer

VSL a.s. Kosice (IBM Slovakia)

J2EE, Rational Rose, Eclipse, Visual Cafe, Informix
Complex IS for largest Slovak insurance company (VsZP)

Jul 2001 - Sep 2002

1 year 3 months

Developer

VSL a.s. Kosice (IBM Slovakia)

Borland C++ Builder, Rational Rose, DB2
Accounting IS in steel company Zeleziarne Podbrezova a.s.

Jan 1999 - Jun 2001

2 years 6 months

Developer

VSL a.s. Kosice (IBM Slovakia)

WebSphere, WebLogic, Tomcat, DB2, Java Servlets, Rational Rose, Borland C++, JSP
Complex IS for Prvá penzijna a.s., part of Postbank Slovakia; client applications, testing, documentation, data transfer, training and hotline

Dec 1997 - Dec 1998

1 year 1 month

Košice, Slovakia

Developer

Intas s.r.o.

Analytic work and IS implementation (PROSOFT), Sun Solaris, Informix 4GL, Cognos Impromptu, Cognos PowerPlay
IS PROSOFT for intermediate size companies

Aug 1996 - Nov 1997

1 year 4 months

Developer

Fest-Temex

Implementation and support of supermarket applications, server administration (SCO Unix, Windows NT)

Jan 1995 - Jul 1996

1 year 7 months

Developer

SaS Slovakia

FoxPro, Paradox, Object Pascal, Delphi, IT administration, data evaluation
IS for SaS Slovakia

Industry experience

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

Experienced in Information Technology, Insurance, Education, Manufacturing, Banking and Finance, and Telecommunication.

Information Technology

Insurance

Education

Manufacturing

Banking and Finance

Telecommunication

Business area experience

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

Experienced in Information Technology, Product Development, Customer Service, Quality Assurance, Business Intelligence, and Accounting.

Information Technology

Product Development

Customer Service

Quality Assurance

Business Intelligence

Accounting

Summary

Angular, React/Redux Web development and Programming, Java Programming (JEE), Spring

Skills

Good Communication Skills Gained Through My Experience As Software Developer And Teamleader
Frontend/Backend Development, Db Tuning, Analytics

Languages

Hungarian

Native

Slovak

Native

English

Advanced

German

Intermediate

Education

Sep 1992 - Jun 1996

Pavol Jozef Safarik University Kosice

Informatics · Košice, Slovakia

Statistics

Experience

Total positions 22

Experience in Information Technology 14 y

Avg length 1 y 5 m

Longest experience 6 y 2 m

Global experience

Countries worked in 2 (Austria, Slovakia)

Primary country Austria

Expertise

Recent roles Fullstack developer, React/Redux, Spring Cloud, Node.JS Microservices developer, Developer

Main industries Information Technology, Insurance, Education

Main business areas Information Technology, Product Development, Customer Service

Profile

Member since

January 2026

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Frequently asked questions

Have questions? Find more information here.

Zsolt is based in Košice, Slovakia.

Zsolt speaks the following languages: Hungarian (Native), Slovak (Native), English (Advanced), German (Intermediate).

Zsolt has at least 32 years of experience. During this time, Zsolt has worked in at least 10 different roles and for 16 different companies. The average length of individual experience is 1 year and 5 months. Note that Zsolt may not have shared all experience and actually has more experience.

Based on recent experience, Zsolt would be well-suited for roles such as: Fullstack developer, React/Redux, Spring Cloud, Node.JS Microservices developer, Developer.

Zsolt's most recent position is Fullstack developer.

In recent years, Zsolt has worked for Twinformatics, Vienna Airport, and Plasser & Theurer.

Zsolt is most experienced in industries like Information Technology, Insurance, and Education. Zsolt also has some experience in Manufacturing, Banking and Finance, and Telecommunication.

Zsolt is most experienced in business areas like Information Technology, Product Development, and Customer Service. Zsolt also has some experience in Business Intelligence, Quality Assurance, and Accounting.

Zsolt has recently worked in industries like Manufacturing, Insurance, and Transportation.

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

Zsolt attended Pavol Jozef Safarik University Kosice for Informatics.

The availability of Zsolt needs to be confirmed.

Daily rate distribution

0 2 4 6 8

<€320 €320-480 €480-640 €1120+

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.

600

450

300

150

Daily rate avg. 471 €

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

600

450

300

150

Median rate 500 €

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 7 Sep 2026. Actual rates may vary depending on seniority level, experience, skill specialization, project complexity, and engagement length.