Martin Ždila, Software Developer in Košice, Košice Region, Slovakia
Martin Ždila

Software Developer in Košice, Košice Region, Slovakia

Member since August 21, 2015
Martin is software professional specialized in Java and JavaScript full-stack software design and development. He prefers open source software and technologies. Martin considers himself very agile in learning new technologies and finding solutions to difficult technical problems.
Martin is now available for hire



  • MySQL, 15 years
  • Java, 11 years
  • HTML5, 8 years
  • JavaScript, 6 years
  • Redux, 3 years
  • Express.js, 3 years
  • Node.js, 3 years
  • React, 3 years


Košice, Košice Region, Slovakia



Preferred Environment

Linux, VSCode, Git, JIRA, Eclipse

The most amazing...

...thing I've built is


  • Vice President

    2010 - PRESENT
    Freemap Slovakia
    • Achieved "A Crazy Mapper" at*Martin*.
    • Imported a huge number of buildings from Cadastre.
    • Imported land coverage from EEA Urban Atlas and Corine Landcover.
    • Implemented a Simplify Polygon JSOM plugin.
    • Created a custom map theme using CartoCSS in TileMill.
    • Created a wizard for embedding maps using Leaflet.
    • Mapped thousands of kilometers of hiking and bicycle trails in the outdoors.
    • Helped find bugs in the map and taught new mappers.
    • Presented OpenStreetMap at a local meetup.
    • Developed the portal including back-end server.
    Technologies: OpenStreetMap
  • Developer

    2015 - 2018
    • Developed the whole application found at, including back-end servers (signalling, recorder, and API). Based on React/Node.js.
    Technologies: Node.js, React, Redux, WebRTC
  • Application Developer

    2014 - 2015
    EEA s.r.o.
    • Helped to create a payment router with a web management console. Mostly focused on payment error resolver.
    • Created a web console for managing the application (Partners, Merchants, Users, Transactions, Terminals, Updates, Payment setting etc.) using AngularJS and Bootstrap.
    • Created a statistics view using D3 chars.
    • Implemented server security using Spring Security, supporting OAuth, Basic HTTP Auth, and form authentication.
    • Helped to design multilayer architecture consisting of REST, Facade, Service, and DAO.
    Technologies: Spring, Hibernate, QueryDSL, AngularJS, Webpack, Robot
  • Mulesoft Anypoint Studio Template Developer

    2014 - 2014
    • Implemented various templates for aggregation, migration, synchronization, and report generation from different connectors (SAP, Siebel, Salesforce, JDBC).
    Technologies: Mule
  • Application Developer

    2014 - 2014
    4Q s.r.o.
    • Created an Android application for managing stocks, customers, orders, meetings, contacts, tasks, and refunds using EclipseLink, Glassfish, and MySQL.
    • Created a synchronization protocol between mobile clients and the server based on REST HTTP.
    • Created a Java server application for managing stocks, customers, orders, meetings, contacts, tasks, and refunds.
    • Created a web application for resource and order management using AngularJS.
    • Created a server application for resource and order management using EclipseLink, Glassfish, and MySQL.
    Technologies: Android, Java, JEE, JPA, Jersey, EclipseLink, MySQL
  • CTO, Software Architect, and Developer

    2007 - 2013
    M-Way Solutions Slovakia s.r.o.
    • Created an application framework based on OSGi.
    • Created a mobile application (midlet) for mobile banking.
    • Created a mobile device management system for managing iPhone, Android, and Windows Mobile phones.
    • Created a mobile provisioning application.
    • Created a transcoding template engine adapting desktop websites for mobile devices.
    Technologies: Java, GWT, OSGi, JavaME, Android
  • Developer, Administrator

    2003 - 2007
    EpiSoftware Slovakia s.r.o.
    • Created a web-based database form a modeler.
    • Created reporting software for Cognos OLAP data cubes.
    • Administered Linux servers running web and email services.
    Technologies: Java
  • Network Administrator, Developer

    2001 - 2003
    Antik Telecom
    • Configured various firewall settings with Netfilter.
    • Set up a mail server (Qmail) for internet provider customers.
    • Set up webhosting for internet provider customers.
    • Created software to inject notifications into a webpage, either ads or debt notifications.
    • Configured routers.
    • Configured QOS.
    • Supported the customers.
    • Configured network monitoring system Nagios.
    Technologies: Linux, PHP, MySQL, C
  • Application Developer

    2001 - 2001
    Datakon s.r.o.
    • Created a web application for monitoring manufacturing processes for paper and pulp.
    Technologies: Linux, Apache HTTPD, MySQL, PHP
  • Web and Server Developer

    2000 - 2001
    ProWeb Consulting, a.s.
    • Developed an information system for doctors in PHP.
    • Implemented a custom mail agent in C.
    Technologies: HTML, PHP, C
  • Application Developer

    2000 - 2000
    Procesná Automatizácia a.s.
    • Created an application for managing warehouse stock in Borland C++.
    Technologies: C++


  • Travel Planner (Development)

    Travel Planner was a demo application for Toptal.

    Basic features:
    - trip management
    - user management
    - multiple user roles
    - REST API

    I decided to use this as an opportunity to learn new technologies - Vert.x 3.0 and React.js.

  • Wirecard Switch (Development)

    Solution of mobile payments for Wirecard. My role was development of the web-client and server. Core technologies are Spring and JPA on server and AngularJS on client side.

    Worked with these technologies, among others: Advanced Spring Web (REST API), Spring Security, FlywayDB, Robot Test Framework, and Swagger on the server side; AngularJS, Bootstrap, Webpack (with bower, npm), and Apache FOP XSLT on the client side; and Robot Framework (integration tests, python), and Mercurial in other areas.

  • Sales Integration System (Development)

    Application for integrating various heterogenous back-end systems of various customers focused on sales. It includes management of stocks, customers, contacts, orders, refunds, and tasks (meetings) and provides some statistical analysis.

    The architecture consists of three distributed layers:
    - back-end on customer side
    - central application server
    - mobile client for retail dealers

    The central application server synchronizes with back-ends and the mobile client synchronizes with the central server. The solution enables retail dealers to manage meetings and to do sales directly on customer's site.

    My role was to design and develop the Android application and to clean up and develop additional features of the central application server. My task was also to design and implement a universal and extensible synchronization subsystem between server and back-ends.

    Technologies used:
    - Android SDK with Android support libraries. Includes Activities, Fragments, Services, Content Providers, SQLite, Notifications, Alarms, and Preferences.
    - Server - Glassfish 4 - EJB, JPA using EclipseLink, JTA, JAX-RS Client and Server using Jersey and CDI

  • Templates for Mulesoft Anypoint Studio (Development)

    Development of templates for Mulesoft Anypoint Studio. The purpose of the templates is to provide a base for integrating the two platforms. Every template works with a different type of business object, different platforms, and a different way of integration. Platforms: Salesforce, SAP, Oracle Siebel, Workday, and Servicenow. Integration ways: aggregation, migration, broadcast, and bi-directional synchronization. Including writing of integration tests.

  • GPX Animator (Development)

    GPX Animator generates a video from GPX files. It is written in Java using Swing.

  • GPS SMS Monitoring (Other amazing things)

    A hobby project about GPS monitoring via SMS based on Arduino, Mediatek GPS module and SIM900A GSM module. The tracking module is controlled and queried by SMS. Suitable for things like vehicle tracking.

  • Arduino based GPS Datalogger and Applications (Other amazing things)

    Hobby project. The project involved creating GPS Dattalogger based on Arduino AVR. Includes the following parts: Arduino Uno compatible, GPS receiver (UBlox/Mediatek, NMEA, UART), SD card (I2C), step-up boost switching power supply, status indication. Integrated SPI Flash memory. Firmware developed with Arduino SDK + libraries.

    Also got experience working with text LCD display, barometric sensor, transmitters (433MHz and 2.4GHz), bluetooth (UART) and communication with Android, RGB LED Strip, GSM module SIM900A. Good soldering skills and understanding of electronics.

  • RGB LED Strip Android Controller (Other amazing things)

    A hobby project with an RGB LED strip controller based on Arduino Leonardo, controlled via Bluetooth with my own Android application. Includes RTC for "offline" scheduling.

  • Resource and Order Management System (Development)

    Development of a resource and order management system.

    Technologies: EclipseLink, Glassfish, MySQL, AngularJS

  • Exisport Maps (Development)

    Developed a client-side map related to parts mostly based on jQuery and Leaflet.

  • Relution (Development)

    Software architect and developer of the product.

    The mCAP is M-Way's basic building block, which provides the mobile infrastructure for businesses. It can be used to implement a variety of different mobile services which can be used for reproduction of enterprise applications. Services and applications for various operating systems can be managed via one platform. The mCAP is highly scalable and optimized for maximum performance.

    Technologies used in the first version: Java, Dojo 0.3, Apache Jackrabbit JCR 1.x, Spring Framework, Servlets, web technologies, and more

    Technologies used in the second version: Java, Spring DM, Apache Jackrabbit JCR 1.x, M-Way ORM, Spring Security, OSGi (Apache Felix). OSGi Enterprise (Configuration Admin, Matatype, Declarative Services, HTTP services, Evends, Logging, User Admin), Log4j, Slf4j, JAXP, JAXB, Spring Framework 2.x - 3.x, GWT 1.4 - 2.5, Servlets, Web Technologies, Jersey (JAX-RS), Jackson (JSON), JAXB, SAX, StAX, XPath, and XSLT.

  • Mobile Device Management (Development)

    Software architect and developer.

    The Mobile Device Management (MDM) platform provides easy to use features for the core aspects of Enterprise Mobility Management (EMM) like configuration management, application management, security, and monitoring.

    Technologies: mCAP, iOS MDM, iOS Push, GCM, Android MDM application development, SCEP Server development, SyncML, Activesync

  • Mobile Banking Client (Development)

    Architect and developer of Mobile Banking Client J2ME Midlet. Technologies: J2ME Polish, WTK.

  • Website (Development)

    Developer of the website. Currently another, more recent version, is online. Techologies: JSF Facelets, Web Presentation Technologies

  • Apparo Fast Edit (Development)

    Software architect and developer of the product.

    Apparo Fast Edit can help you expand your business intelligence environment to include a high-performance data entry component featuring Excel data import support for your everyday business activities.

    Technologies: Java, Struts 1.0, Spring Framework 2.x, Hibernate 3.x, JDBC, JSF 1.0, Web Technologies

  • Kovine Business Graphics (Development)

    Developer of the web application for drawing graphs from Cognos OLAP Cubes. Technologies: Java, JSP, HTML, CSS, AJAX, Eclipse Modeling Framework, Struts, Servlets

  • Informator (Development)

    Software architect and developer of the product.

    Informator is a system residing on an Internet Gateway to send pop-up messages via Web Browser to a specific host on LAN. That could be useful for Internet Service Providers if they need to send some information to their customers.

    Technologies: PHP 4, MySQL, Linux, Apache HTTP, Netfilter, Transproxy 1.5

  • Paper Manufacturing Monitoring System (Development)

    A monitoring system for process of manufacture of paper and pulp. Software architect and developer. Technologies: PHP 4, MySQL

  • Stock Monitoring Application (Development)

    Developed the application in Borland C++ for stock monitoring.

  • Gruveo (Development)

    React/Node.js development of WebRTC videoconference application. I have been the only developer of the web app (excluding design and styling) and back-end servers.

  • Freemap Slovakia Portal (Development)

    Developed the web app in React and back end server in Node.js.

  • Toposcope Designer (Development)

    Developed the web app in React.


  • Languages

    ECMAScript (ES6), JavaScript, Java, CSS, HTML, HTML5, ES7, XSLT, Bash Script, CSS3, SQL, C, TypeScript, Elm, PHP, Visual Basic, Groovy, Perl
  • Frameworks

    Redux, Express.js, Spring JDBC, Koa, Flux, Spring, OSGi, JavaServer Pages (JSP), OAuth 2, Apache Felix (OSGI), Hibernate, JPA, Bootstrap 3, JUnit, GWT, Spring MVC, Electron.js, Tapestry, Swing, Vert.x, Jersey, Spring Security, Qt, Apache Axis, JSF, Grails
  • Libraries/APIs

    Node.js, React Router, React, LeafletJS, Java Collections, Java Servlets, JDBC, SAX, JAXB, OpenStreetMap API, WebRTC, React Redux Form, JMX, Java Security, Android Support Library, Apache HttpClient, Jackson, JTA, JAX-RS, Android API, Google Analytics API, Java 2D, Apache Lucene, JGroups, Facebook API, D3.js, OpenGL, jQuery
  • Tools

    Redux Thunk, Webpack, JOSM, Eclipse IDE, AWS Push Notification Service (AWS SNS), AWS SES, AWS ElastiCache, AWS EBS, NPM, Bower, Apache Ant, Android Studio, Maven, Apache Tomcat, Jetty, Java Concurrency, Inkscape, Gimp, Ivy, Subversion (SVN), Mercurial, Git, Atom, Javadoc, Apache JMeter
  • Paradigms

    REST, Agile Software Development, Design Patterns, OLAP
  • Platforms

    JSE, Linux, Visual Studio Code, AWS Elastic Beanstalk, AWS EC2, Apache Server, Debian Linux, Java ME, Java EE, Oracle Database, Android, Arduino, Windows, Mule ESB
  • Storage

    MySQL, Spring Data, PostGIS, PostgreSQL, SQLite, AWS S3, AWS RDS, Redis, JavaDB, Apache Derby, MongoDB
  • Other

    OSGi Metatype, OSGi Configuration Admin, OSGi Declarative Services, HTTP, Software Design, Chrome Extensions, OSGi User Admin, OSGi Event Admin, OSGi HTTP Service, Apache Commons, CartoCSS, Public-key Cryptography, LDAP, Styled Components, AWS Route 53, GPS, Apache FOP, SVG, AT Commands, SMTP, POP3, IMAP


  • Master of Science degree in Informatics
    1998 - 2003
    Technical University Košice - Košice
  • Technical High School degree in Electronic Computer Systems
    1993 - 1998
    Secondary School of Electrical Engineering in Košice - Košice

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