Develop and optimize prompts for generative AI models, with a focus on Voice AI
Conduct testing to improve model performance, accuracy and relevance of outputs
Fine-tune and automate prompts to increase efficiency and consistency
Analyze usage data and model outputs to drive continuous improvements and data-driven decisions
Integrate and tune Voice AI systems based on platforms such as fonio, vapi ai, retell ai, ElevenLabs or Deepgram
Develop, train and maintain proprietary Voice AI prototypes and workflows
Monitor current trends and technical developments in generative AI, prompt engineering and language models to evolve internal strategies

Experience working with Voice and AI platforms such as fonio, vapi ai, retell ai, ElevenLabs, Deepgram or comparable tools
Knowledge of integration, control and optimization of speech AI systems
Experience implementing your own Voice AI projects is a strong advantage
Basic technical knowledge of TypeScript, Python or similar languages is desirable
Passion for generative AI, language models and voice technologies
Creative and analytical mindset for developing innovative AI interactions
Excellent German and English skills, both written and spoken

Young company, 100% remote, high level of trust — ideal conditions if you want to grow professionally and personally, develop and leave your mark on the success of a fast-growing company
Inspiring company culture based on shared values such as drive, positivity, progress and “Deliver Wow”
With “onpreo Flex” you decide where you work most effectively
Our remote work policy includes the option to work from home or from any location within the United Kingdom or the European Economic Area

Prompt Engineer – Focus on Voice AI

Key skills