Hans-Christian Riess-Senior Software Architect

Consulting and prototype work on AI voice and multilingual agent systems, using AI-assisted delivery across realtime translation prototypes, call-centre automation, and voice-to-voice consultation workflows.

• Built and advised on AI voice / agentic conversation prototypes, including realtime translation and consumer-facing consultation experiences.
• Worked across call-centre automation, voice UX, product architecture, implementation tradeoffs, and prototype development.

Consulting and prototype work across medical workflows, visual reasoning tools, and product/interaction experiments between the long-running miaVent period and later AI systems work.

• Worked on tablet-based medical workflow concepts and voice-supported visual reasoning prototypes.
• Explored product interaction patterns at the boundary of software, workflow, and expert reasoning.

billing production operations and support plus development and configuration of the billing system and interfaces to the mediation system, which transported call data from the PSTN into IT systems. The domain included land-line telephony, call-by-call billing, interconnect billing, service provider billing, and reseller billing.

• Supported production billing runs, customer-specific configuration, backlog recovery, VAT-related changes, and billing reliability under operational pressure.
• Developed and configured Arbor billing functionality and interfaces around mediation and downstream billing workflows.
• Worked close to operations, where data correctness, recoverability, domain understanding, and production judgment mattered more than clean greenfield design.

Modernization and maintenance of the billing system and additional interfaces inherited after the VIAG Interkom split. The context was land-line telephony and legacy billing infrastructure rather than greenfield product development.

• Maintained and modernized billing-system functionality, integrations, and adjacent operational interfaces.
• Worked in a legacy-heavy environment where continuity, correctness, and safe change mattered as much as new feature work.
• Supported inherited telecom billing processes including land-line telephony billing and related enterprise interfaces.

Work on a long-lived business platform in the miaVent period, evolving from bespoke database/front-end deployments toward a more maintainable SaaS-oriented architecture.

• Implemented complex business-rule, incentive-plan, marketing-plan, deployment, and customer-specific logic across legacy-constrained systems.
• Helped modernize architecture and process around repeated customer deployments, backporting, reliability, and maintainability.
• Participated in modernization topics including Scrum, microservices, high availability, and AWS migration.