AI Prompt Engineer

Our client in the microfinance industry in Kenya is seeking an innovative and technically skilled AI Prompt Engineer to lead the design and optimization of AI-powered voice bot conversations that enhance customer engagement and drive operational performance. This is an exciting opportunity to work at the intersection of generative AI, conversational design, and financial services, developing production-grade prompts that power automated debt collection interactions in both English and Swahili. Working closely with technology, operations, and collections teams, you will continuously refine AI performance through testing, analytics, and experimentation while ensuring regulatory compliance and an exceptional customer experience. If you have hands-on experience with large language models, conversational AI, and a passion for solving real-world business challenges using AI, this role offers the opportunity to make a measurable impact in a fast-paced, technology-driven environment.

Responsibilities

Design, author, and maintain production-grade prompts for AI voice bots deployed across outbound debt collections campaigns and inbound collections IVR in English and Swahili.

Optimise prompt structure using Markdown formatting principles (headers, delimiters, instruction hierarchy) to maximise model comprehension and minimise token overhead and call latency.

Tune and test prompts on Gemini 2.5 Flash (Google AI Studio / Vertex AI) and OpenAI GPT-4o, benchmarking outputs against latency, coherence, and collections compliance targets.

Evaluate how prompt length, token count, instruction complexity, and model parameters (temperature, max_tokens, streaming) affect inference latency and per-call cost.

Implement and iterate on system prompts, few-shot examples, persona definitions, objection handling branches, promise-to-pay capture logic, and fallback scripts for edge-case scenarios.

Conduct structured QA audits on sampled collections call recordings, scoring against defined parameters (script adherence, tone, promise-to-pay handling, loan disclosure compliance).

Maintain a versioned prompt change log with A/B test configurations and measurable outcome data; produce regular performance summaries for the Call Center Manager....