TENIOS GmbH

Full-stack Engineer

• Take end-to-end responsibility (“you build it, you run it”) for the cloud-native communications platform
• Develop and maintain low-latency call-control systems using FreeSWITCH and Kamailio
• Implement ACD engines and AI-powered IVR workflows
• Integrate real-time AI voicebot platforms via WebSockets/RTP
• Evolve and scale the Java 21+/Spring-based backend platform with microservices and RabbitMQ
• Expand multi-tenant capabilities and maintain usage-rating, billing, and invoicing engines
• Apply secure-coding practices to support ISO 27001 and NIS 2 compliance
• Manage CI/CD pipelines, Kubernetes deployments, and observability to achieve 99.99%+ availability
• Maintain existing Backbone.js and Marionette.js frontends and lead the migration to modern frontend frameworks
• Adopt and promote AI-assisted development tools and agent-based CLI workflows
• Work closely with Platform Engineering, Security, and Product teams

Senior Software Engineer, Java