Application Platform Engineer - Java & Kubernetes (f/m/d)

SupplyOn is the digital infrastructure for globally connected industries.

For more than 25 years, our platform has managed complex supply chains, connecting over 70 percent of the world’s leading industrial companies and ensuring that everything is in the right place at the right time.

We drive digital transformation where it truly matters: in the real network. Technologically strong. Internationally connected.

Our SupplyOn team, made up of many talented individuals, is growing with new challenges, employees, and development opportunities. To drive innovation and digitalization forward together, we are looking for a Application Platform Engineer - Java & Kubernetes (f/m/d) to join us immediately in our Budapest office - Hybrid (3 days/week onsite)

Together, we want to make a real impact. Do you? Then we look forward to welcoming you as part of our team!

What you will do

As part of our central platform team, you will build, operate, and continuously improve the technical foundation that enables our agile development teams to deliver reliable and scalable products efficiently and securely.

Your focus will be on Platform Engineering: providing stable platform services, automating operations, supporting developer tooling, and evolving our Java middleware and cloud-native infrastructure landscape.

You will work closely with development teams, DevOps engineers, and operations colleagues to ensure high availability, smooth deployments, and a modern engineering platform.

• Build, operate, and continuously improve our central Java application platform and runtime environment
• Plan and execute middleware and platform upgrades (e.g. JBoss, Spring Framework)
• Operate and continuously improve Kubernetes/OpenShift-based platform environments and deployment processes
• Develop and maintain shared platform services and central microservices
• Support agile development teams with platform, infrastructure, and deployment-related topics
• Drive automation and standardization across infrastructure and delivery processes
• Analyze incidents, troubleshoot complex technical issues, and improve operational stability
• Contribute to the continuous improvement of system architecture, developer tooling, and platform operations

What you should bring

• Professional experience in Platform Engineering and Java backend engineering
• Strong hands-on experience with Java enterprise technologies, Spring Boot, and JBoss
• Practical experience with Kubernetes platforms; OpenShift experience is a plus
• Solid understanding of CI/CD pipelines and deployment automation (e.g. Jenkins, GitOps workflows)
• Experience with microservices architectures and shared backend/platform services
• Good understanding of software security and secure platform operations
• Experience operating and maintaining enterprise-scale systems
• Strong analytical and troubleshooting skills
• Structured and solution-oriented working style
• Good communication skills and willingness to collaborate across multiple agile teams
• Motivation to continuously improve platform reliability, automation, and developer experience

How we work

• A modern working environment with a high degree of autonomy and creative freedom
• Close collaboration within agile and cross-functional teams
• Strong focus on personal and professional development
• Clear leadership principles, dedicated learning formats, and continuous growth opportunities
• A culture that values ownership, collaboration, and continuous improvement

Our environment is dynamic, our mindset clear: we think in impact, not in hierarchies.

We work across disciplines, continuously evolving our solutions together, and taking responsibility for what we do.

What unites us is the drive to make a difference. That’s why we create space – for independent work, new ideas, and both professional and personal growth.

At SupplyOn, development isn’t just possible – it’s part of who we are. Shaping and changing things is part of our everyday work.

You’re eager to contribute, think along, and co-create? Then SupplyOn is the right place for you.