Igor Ináš
Java Developer in Prešov, Slovakia
Member since July 6, 2018
Igor has been a Java developer for over a decade. While in touch with the latest frameworks, he always puts emphasis on fundamental concepts and best practices in code writing first. He strives to write maintainable code and follows strict separation of concerns. Duplicate or dead code is not an option. He follows a client-oriented approach, understanding that the client's success is his own success.
Igor is now available for hire
Portfolio
- Real Life Sciences, Inc.Java, Spring Boot, Apache Spark, SWT, Ruby, Rails
- V-Lottery Systems GmbHPHP, Zend Framework, MySQL Enterprise Edition 5.7, jQuery, Redis, Centos...
- Swiss ReJava, Spring, EJB, Hibernate, Swing, DB2, IBM Mainframe, IBM Websphere...
Experience
- Java, 14 years
- Java EE, 12 years
- Test-driven Development (TDD), 12 years
- Functional Programming, 10 years
- Spring, 6 years
- PHP, 6 years
- MySQL, 6 years
- Spring Boot, 2 years
Availability
Part-time
Preferred Environment
Windows, Docker, IntelliJ IDEA
The most amazing...
...software I've created was an API performing thousands of micro financial transactions each second while being limited to only use PHP and simple MySQL.
Employment
Java Software Engineer
2015 - 2018Real Life Sciences, Inc.- Developed a high performance text parsing service.
- Customized an existing desktop UI.
Technologies: Java, Spring Boot, Apache Spark, SWT, Ruby, RailsPHP Software Engineer
2014 - 2018V-Lottery Systems GmbH- Developed two online casino websites.
- Inherited and reverse-engineered an old PHP project.
- Performed major clean up, removed massive amount of duplicate code, introduced enterprise ready improvements.
- Continuously deployed new features, while maintaining virtually zero downtime.
- Developed and secured all features related to financial transactions.
- Developed a high volume remote financial transaction API.
- Established data retention procedures.
- Performed code review and mentoring of junior developers.
Technologies: PHP, Zend Framework, MySQL Enterprise Edition 5.7, jQuery, Redis, Centos, Docker, Scala, AkkaJava Software Engineer
2010 - 2014Swiss Re- Implemented a proprietary data store.
- Implemented batch processing of financial data.
- Migrated, improved and consolidated existing COBOL solution to Java.
- Created whole design and implemented from scratch.
- Improved performance by continuous profiling.
- Performed testing, release planning, created documentation.
- Improved end-user experience by introducing web and desktop GUI.
Technologies: Java, Spring, EJB, Hibernate, Swing, DB2, IBM Mainframe, IBM Websphere, IBM Compute GridJava Developer
2007 - 2009FINAMIS s.r.o.- Developed private banking and financial portfolio management software.
- Implemented business functionalities according to documentation.
- Lead development of GWT web client.
- Maintained and improved an in-house build and deployment platform.
Technologies: Java, EJB, JBoss, Websphere, MSSQL, Oracle, Hibernate, JSF, Swing, GWT, IBM RationalJava Developer
2004 - 2006Siemens Enterprise Communications- Worked on-site at client (bank), performed analysis of internal systems.
- Developed custom adapters for identity management solution.
- Developed access to legacy systems, which did not expose any reasonable API.
- Consulted and supported definitions of processes, roles and rules.
- Created a custom billing solution for a telecommunication company.
- Optimized performance of both new and existing solutions.
- Developed management tools.
Technologies: Java, Sun One AS, Sun Identity Manager, DB2, JMS, MQSeries, JMX, Berkeley DB, Swing, Oracle, PostgreSQL, HibernatePHP developer
2004 - 2004TURKTICARET.NET A.Ş.- Took an AIESEC working traineeship in a foreign software company.
- Developed multiple web sites for small and middle sized companies.
- Developed custom CMS for every website.
- Provided English translations.
Technologies: PHP, Apache, MySQL, HTML, XTemplate
Experience
- QuasarGaming (Development)
Online gambling casino website. I integrated the majority of payment methods, e.g. PayPal, Skrill, and others. I designed and implemented high volume API for exchanging money between user's wallets and 3rd party game providers.
I refactored and reverse-engineered an old PHP solution, bringing it to higher standards, removed duplicate code, set up static code analysis.
Together with DB engineers, I tuned the performance of the database, fixed data model, established data replication and retention procedures.
I directly supported the client and website operations. - AMS-WEB (Development)https://www.finamis.com/products/ams-web#tabbed-tab-3
Developed software for investment banking, portfolio management.
Introduced GWT to technology stack, lead development of new web client (AMS-WEB)
Skills
Languages
Java, PHP, Scala, JavaScript, HTML, GroovyFrameworks
Spring, Spring Boot, GWT, Spring JDBC, Zend Framework, Play Framework, Hibernate, Bootstrap, Grails, SparkLibraries/APIs
JDBC, jQuery, Vue.jsTools
IntelliJ, Jenkins, Jira, AnsiblePlatforms
Java EE, Linux, Windows, Heroku, Docker, JBoss, LAMPStorage
MySQL, IBM DB2, PostgreSQL, MSSQLCE, Oracle SQLParadigms
Functional Programming, Test-driven Development (TDD), ScrumOther
Ajax
Education
- Master's degree in Computer Science2000 - 2006Comenius University - Bratislava, Slovakia
Certifications
- Functional Programming Principles in ScalaAUGUST 2016 - PRESENTCoursera (GSU8J25MK55B)
- Programming LanguagesDECEMBER 2013 - PRESENTCoursera
- Principles of Reactive ProgrammingDECEMBER 2013 - PRESENTCoursera
