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Cronos International - Middleware Support Senior Engineer (European Commission Brussels)

Key Responsibilities

  • The Administrator will be responsible for installation and configuration performance tuning and maintenance of WebLogic, Tomcat and WildFly application servers.
  • He will be responsible for the J2EE software applications and support the users who have any issues in deployment and product usage.
  • Furthermore he will troubleshoot infrastructure issues, support the application development  cycle involved with application design deploying code and resolving any infrastructure problems, monitoring production and acceptance environment, tuning J2EE application servers to optimize performance and stabilizing and improving JVM performance by tuning the heap size GC policy and connection pools


Required skills

  • Strong written and interpersonal communication skills, with both technical and non-technical audiences.
  • Excellent writing and training skills.
  • Good attention to detail.
  • Ability to troubleshoot effectively
  • Strong initiative and follow through; ability to work within a team environment.
  • Understanding of network protocols TCP/IP and HTTP.
  • Good Knowledge of application servers (WebLogic, Tomcat, WildFly).
  • Good Knowledge of Database Management (MySQL, Oracle RDBMS).
  • Good Knowledge of Java, J2EE, XML, SOAP.
  • Experience with Linux environments scripting.
  • English is mandatory and other European languages are nice to have


Preferred skills

  • Middleware products WebLogic, Tomcat, and WildFly application server and Apache.
  • Experience with large scale J2EE deployment Java programming or software development life cycle
  • Good knowledge of SOA Architecture and Web services (SOAP and REST)
  • Experience with SoapUI and free API test tool
  • Public key Infrastructure knowledge is nice to have.
  • Knowledge of SQL.


Working conditions

  • Work shifts of 8 hours covering the time range between 08:00 am and 06:00 PM from Monday to Friday with some flexibility required when overtime is exceptionally needed + Standby service 06:00 PM ---> 08:00 am + weekends and during public and Commission holidays
  • Occasional travel may occur.
  • Office located in Brussels

Beschrijving bedrijf

CRONOS International is since October 2005 the company of the CRONOS group specialized in delivering ICT services to private and public International Organizations. By creating a distinct organization, CRONOS wants to emphasize the additional components that characterize international organizations, such as multilinguism, different cultures, more complex decisions processes and so on.
Ever since its inception, CRONOS has demonstrated an extraordinary growth, both in revenue and staff numbers.
CRONOS' ability to swiftly adapt to the ever-changing market demands made it the most preferred technology partner for many companies on the lookout for high quality ICT solutions.
A thorough understanding of customers' needs and a continuous quest for innovation, combined with a consistent but flexible attitude towards excellence, paved the way to rapid growth and success.

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