Hearth AI is seeking a top-tier Voice AI prompt specialist for a high-impact consulting engagement. We are refining the user experience for our fast-growing flagship AI receptionist. We are looking for a top-tier, freelance Prompt Engineer who specializes in voice agents to help us achieve a more natural, effective, and human-like conversational flow. This is a short-term consulting engagement. You will work directly with our product team and CEO to: Audit & Review: Analyze our current prompt library and conversation flows, identifying areas for improvement in clarity, tone, and efficiency.
Design & Engineer: Design, test, and refine write new, experimental prompts for various scenarios (e.g., call routing, message taking, appointment scheduling, handling ambiguity, repeat callers).
Test & Optimize: Help us structure A/B tests to measure the performance of new prompts against existing ones. This is the right role for you if: You have at least 1-2 years of professional experience focused specifically on prompt engineering and conversational design for voice-first AI products (e.g., AI assistants, advanced IVR, voice-controlled applications). Deep understanding of the nuances of spoken language vs. written language (e.g., handling pauses, interruptions, and non-linear conversations). Ability to define and embody a specific persona/tone of voice for an AI agent. Your portfolio demonstrates a deep understanding of Voice User Interface (VUI) design principles. We must see examples of your work for voice agents. You have a sophisticated understanding of modern prompt engineering techniques (e.g., chain-of-thought, few-shot learning, ReAct) and how to apply them to spoken dialogue. You are results-obsessed and have direct experience measuring and improving conversational AI performance through A/B testing and data analysis. You have a "good ear" for what makes a conversation feel natural and can write dialogue that leverages the high-fidelity output of platforms like ElevenLabs. Bonus points for: Current or previous experience at a leading voice-first company Experience with workflow automation tools (n8n, Zapier) and an understanding of how prompts fit into an API-driven system. Excellent communication skills and the ability to articulate the rationale behind your prompt design choices. How to Apply: Please begin your proposal with the word "HEARTH" so we know you've read the details. In your proposal, please include: A link to your portfolio or 2-3 specific examples of voice-related prompt engineering or conversational design work. A brief paragraph on your experience and philosophy for creating effective prompts for a voice-based AI receptionist to achieve desired user or business outcomes.
Flutter App Play Store Release Assistance Category: Android App Development, Android Studio, App Development, App Publication, App Store Optimization, Flutter, Mobile App Development, Mobile Development Budget: ₹12500 - ₹37500 INR
Modern Car Review Website Build Category: Graphic Design, HTML, Performance Tuning, PHP, UI / User Interface, Web Design, Web Development Budget: min $100000 SGD
Cold Callers for career centers, job seekers Category: Business Development, Call Center, CRM, Customer Service, Lead Generation, Market Research, Sales, Telemarketing, Telephone Handling, VoIP Budget: $10 - $30 USD
23 Oct 2025 03:58 GMT
BigFix CIS Baseline Hardening -- 2 Category: Automation, Compliance, Documentation, Network Security, Project Management, Scripting, System Administration, Windows Server Budget: ₹12500 - ₹37500 INR
23 Oct 2025 03:57 GMT
API Documentation Writer Needed Category: API Development, API Integration, Copywriting, Ghostwriting, JavaScript, PHP, Software Documentation, Technical Writing Budget: $15 - $25 USD
23 Oct 2025 03:57 GMT
Residential Cost Estimate Proposal Category: Budgeting And Forecasting, Construction Management, Excel, Financial Analysis, Project Management, Proposal Writing, Report Writing, Word Processing Budget: $14 - $30 NZD
23 Oct 2025 03:57 GMT
Friends Gift Contribution App Category: Android, Flutter, IOS Development, IPhone, Mobile App Development, PHP, React Native, UI / User Interface Budget: $750 - $1500 USD