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Neofacto - Senior Java Developer



Job description

  • Senior Java developer responsibilities include designing and developing high-volume, low-latency applications for mission-critical systems and delivering high-availability and performance
  • Able to work autonomously and guide/mentor intermediate and Junior developers on the projects he is assigned to
  • Contribute in all phases of the development LifeCycle
  • Write well designed, testable, efficient code
  • Ensure designs are in compliance with specifications
  • Understand client requirements and how they translate in application features
  • Perform unit and integration testing before launch
  • Troubleshoot and debug applications
  • Prepare and produce releases of software components
  • Support continuous improvement by investigating alternatives and technologies and presenting these for architectural review



  • Minimum of 7 years of proven experience as developer
  • Bachelor / Master's Degree in Computer Science / Business Information Systems
  • Proven experience leading development teams with successful results
  • Strong understanding of J2EE architecture and / or Spring
  • Profound insight of Java and JEE internals (Classloading, Memory Management, Transaction management etc.)
  • Strong server-side development experience of enterprise applications using Java EE / Spring
  • Familiarity with Maven, Agile practices, Jira (or similar tools), enterprise and RESTful architectures
  • Strong experience in several of the following areas: Java J2EE, Spring, JUnit, SOA principals , Rest services, SQL, ORM, JPA, database design, application servers
  • Familiarity with best practices for Java and design patterns
  • Current knowledge of XML, UML, HTML, JavaScript, Linux/Windows
  • Proficient understanding of code versioning and CI tools, such as GIT/SVN, Jenkins, Sonar, Nexus
  • Good written and oral communication skills in English


Considered as plus

  • ICT and Telecom Business domain understanding
  • Knowledge of Apache  Camel, BPM engines,  CXF Web services,  Apache AMQ is a strong plus
  • Experience in developing front-end (Angular) is a strong plus
  • OSGI (KARAF),  Red Hat JBoss AS / EAP , Red Hat SSO , Red Hat Fuse is a strong plus
  • PaaS solutions like Cloudfoundry , OpenShift
  • MicroServices, Docker, Containers, Orchestration (Swarm, Kubernetes)


Soft skills

  • Team player who is flexible and able to work with end-users and production issues simultaneously
  • Excellent communication skills, must be able to clearly communicate ideas, decisions and reasoning to both technical and non-technical team members
  • Ability to work within a fast-paced environment with aggressive timelines
  • Technical mindset with great attention to detail
  • Creativity in addressing technical challenges / problem solver / analytical skills
  • Strong written and verbal skills: English is a must, French, German and / or Luxembourgish considered an asset


Neofacto is mainly recognized in Mobile and Web development. The company started in 2000 in Luxembourg and is well known as a serious, creative and innovative partner to its customers. The services range from strategic advice, business analysis and modeling, architecture choices, software development, testing, and project management.

Created by IT entrepreneurs, Neofacto is a team of passionate engineers and consultants; the company is also the incubator of several high-tech startups like Jamendo in the digital music space or Scorechain/Yallet around the bitcoin crypto currency.

Neofacto has around fifty employees in Luxembourg, fifteen in Belgium; and is seeking to expand on the same business model that made its success for fifteen years.

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