Senior Developer (REF5631M)

Stack

Responsibilities

• ▹Develop, maintain, and enhance microservice-based applications using Java and Quarkus, ensuring high performance, scalability, and reliability
• ▹Operate and support production environments running on Kubernetes, including deployment automation, monitoring, troubleshooting, and incident resolution
• ▹Design and maintain integrations with Kafka, MongoDB, and external systems using Apache CXF-based services and APIs
• ▹Implement and improve CI/CD pipelines using Jenkins, automate operational processes with Linux and Bash scripting
• ▹Collaborate closely with business and technical stakeholders, perform root cause analysis, and drive continuous improvements across development and operations

Requirements

• ▹At least 5 years of experience in Software Development
• ▹Java
• ▹Quarkus
• ▹Kubernetes
• ▹MongoDB
• ▹Kafka
• ▹Apache CXF Framework
• ▹Linux + Bash
• ▹Jenkins
• ▹Experience working in agile
• ▹Collaboration with Jira and Confluence

Nice to have

• ▹AWS
• ▹MongoDB Atlas Cloud
• ▹Citrus Framework
• ▹Reactive programming
• ▹Grafana
• ▹Prometheus
• ▹OpenSearch
• ▹Postgres
• ▹GitLab/ArgoCD

Soft skills

About the company

Deutsche Telekom IT Solutions is a subsidiary of the Deutsche Telekom Group and was named Hungary's most attractive employer in 2025 (according to a representative survey by Randstad). The company provides a wide portfolio of IT and telecommunications services with more than 5,300 employees, serving hundreds of large corporate customers in Germany and other European countries. In 2019, DT-ITS received the Best in Educational Cooperation award from HIPA and was recognized as the Most Ethical Multinational Company. The company continuously develops its four sites in Budapest, Debrecen, Pécs, and Szeged, and is constantly looking for skilled IT professionals to join its team.