Richard Opálka - Software Developer at IBM

Richard Opálka

Software Developer at IBM

Prague, Prague, Czechia

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Summary

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Richard Opálka is a seasoned software developer and principal-level engineer with 18 years of experience building and hardening Java-based server infrastructure, currently based in Prague and recently joining IBM after a long tenure at Red Hat/JBoss. He has deep expertise in backend systems, modular classloading, and webserver internals—contributing critical fixes and RFC-compliant improvements to notable open-source projects such as Undertow and WildFly. Richard’s work spans fixing deadlocks and security issues to modernizing Servlet API support and remoting subsystems, demonstrating a pragmatic focus on reliability and standards compliance. Comfortable across enterprise middleware and low-level runtime code, he pairs a strong testing mindset with architecture-aware refactoring. An interesting detail: he has repeatedly bridged product-quality engineering and upstream open-source stewardship, removing deprecated code while ensuring compatibility with evolving JDK behaviors.

18 years of coding experience

23 years of employment as a software developer

B.Sc., Informatics Science, B.Sc., Informatics Science at University of Pavel Jozef Šafárik at Košice (Slovakia)

Economics, Accounting & International Marketing, Economics, Accounting & International Marketing at Secondary Commercial Schoold at Humenne (Slovakia)

English, Czech, Slovak

Stackoverflow

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Github Skills (25)

jakartaee10

back-end-development10

testing10

webpages10

jax-ws10

web-content10

webservice10

java10

servlet10

classloader10

javas10

http-server10

wildfly10

xml-parsing10

xml10

Programming languages (3)

JavaSCSSHTML

Github contributions (5)

jboss-modules/jboss-modules

Oct 2011 - Nov 2022

A Modular Classloading System

Role in this project:

Back-end Developer

Contributions:51 reviews, 146 commits, 132 PRs in 11 years 2 months

Contributions summary:Richard primarily focused on improving the module classloading system, addressing issues, and enhancing the functionality of the classloader. They implemented test cases and fixed bugs related to resource loading and class loading. The contributions include modifications to resource loaders such as the `JarFileResourceLoader`, along with improvements to the module alias functionality. The user also addressed and fixed various JDK-related integration issues.

classloadingjboss-modulesjavamodularclassloader

wildfly/wildfly

Sep 2012 - Jan 2023

WildFly Application Server

Role in this project:

Back-end Developer

Contributions:166 reviews, 9 commits, 248 PRs in 10 years 5 months

Contributions summary:Richard's commits focused on fixing bugs and refactoring the WildFly Application Server's web services modules, particularly within the backend for Java EE applications. Their contributions involved rectifying test failures, removing obsolete code and dependencies, and enhancing the integration of Enterprise Java Beans (EJBs) with web services. The user demonstrated expertise in Java, JAX-WS, and the underlying architecture of the WildFly application server.

application-serverwildfly

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