Senior Java Developer

Senior Java Backend Developer – Drive Innovation in High-Performance Systems

Vipas AB is looking for a Senior Java Backend Developer for an exciting assignment with one of our international clients. You will be part of a global team developing a high-performance Online Charging System (OCS) used in mission-critical telecom environments.
In this role, you will take a leading position in backend development, contribute to technical innovation using Java and AI-assisted tools, and mentor other developers in an agile, collaborative setup. This assignment is perfect if you thrive in fast-paced environments and enjoy combining deep technical expertise with teamwork and leadership.
Location: Karlskrona
What you will do
Design and develop scalable backend services using Java


Lead and implement features based on 3GPP Policy Control (Diameter, 5G REST)


Collaborate with international, cross-functional teams to deliver product increments


Maintain and improve CI/CD pipelines and automated testing


Mentor junior developers and promote coding standards and best practices


Support adoption of AI and DevOps tools (e.g., Amazon Kiro, Copilot, Kubernetes)

Requirements
5+ years of experience in backend development with Java


Experience with telecom protocols such as Diameter and 5G REST


Strong knowledge of Docker, Kubernetes, CI/CD, and monitoring tools (Grafana, Prometheus)


Proficiency with Git, Gerrit, Jenkins, Maven


Agile mindset with experience working in Scrum teams


Strong communication skills and a proactive, collaborative approach

About Vipas AB
Vipas AB is a Swedish technology consultancy helping organizations succeed in a digital and connected world. We work with leading companies across industries such as telecom, defense, automotive, energy, and the public sector, delivering expertise in software development, systems engineering, embedded systems, and digital transformation.
At Vipas, we believe in long-term partnerships with our clients and employees. Our consultants are our greatest strength, and we focus on creating assignments where you can grow, make an impact, and feel proud of the work you do.
Why Vipas AB?
Personal development – training, certifications, and career coaching


Supportive culture – close dialogue with dedicated managers and colleagues


Challenging assignments – work with cutting-edge technologies and leading clients


Work–life balance – we value sustainability, flexibility, and long-term careers


Strong network – be part of a growing, knowledge-driven consultancy

Apply today
Send your application to shriniv@vipas.se or contact us at +46 728 479197.