Senior Java Software Engineer (m/f)

Osijek / remote, Hrvatska

The DEKRA Arbeit Group, with its more than 140 locations throughout Europe, is one of the most successful and innovative umbrella organizations in the area of personnel services. We are a highly professional and ambitious company driven by talented and dedicated people who are committed in delivering all our services.

Our Client is Optiva, a leading global provider of cloud-native revenue management software for the telecommunications industry, covering the full lifecycle of telecom billing system experience. It has the most contemporary team of experts across the globe, on six continents.

It is servicing the world’s largest and most innovative telecom service providers using cutting-edge technologies. It provides solutions for optimization of financial operations and facilitates the work of numerous telecom companies. At Optiva, the strategic focus is advancing society's digital services.

Optiva’s company values are creativity, integrity, collaboration and accountability. If you are passionate about modern technologies development and want to develop your skills and competencies further, then we would very much like to hear from you.

At Optiva, they are looking for:


Senior Java Software Engineer (m/f)

Location: Osijek

(remote, on-site or hybrid)

Job Role:

Working as part of a multi-disciplinary team, you will be responsible for implementation of highly scalable and reliable software solutions. You will work together with technical leads on design activities and develop information systems by designing, coding and installing software solutions. As a Senior, you will assist in team development through mentorship and knowledge sharing. You will stay on the leading edge of development practices to drive efficiency through the lifecycle and achieve goals.


  • BSc degree in Computer Science, Engineering or equivalent
  • Minimum 5 years’ experience developing complex solutions using Java or .NET
  • Excellent troubleshooting skills
  • DB knowledge (Oracle, MySQL, PostgreSQL, Redis, MongoD, Apache…)
  • Excellent OOP skills
  • Experience working with CICD / GIT / Jira / Jenkins
  • Experience working in an agile environment and an advocate for best practices
  • Teamwork and adaptability to challenges
  • Fluency in English (spoken and written) is mandatory

Other useful knowledge / experience:

  • Experience working with Cloud solutions (GCP, AWS, Azure) and Containers (Kubernetes, Docker)
  • Experience with Billing and Payments solutions
  • Knowledge of 3GPP standards, 3G, 4G Architecture and Technologies is a plus

The Client offers:

  • Working with other experts as part of international, global teams
  • Challenging and stimulating working environment
  • Excellent opportunity for personal and professional development
  • Possibility of advancement through dedication and efficiency
  • Freedom to innovate
  • Improving foreign language skills
  • Flexible working hours
  • Working on-site, remote or hybrid
  • Competitive compensation package

Senior Java Software Engineer (m/f)

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Senior Java Software Engineer (m/f)

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