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.
Automated Email Marketing System Category: Automation, Content Strategy, Email Marketing, HTML, Lead Generation, Marketing, PHP, Web Design Budget: $25 - $50 USD
15 Mar 2026 05:01 GMT
SEO Boost for website and Product Pages Category: Google Analytics, Internet Marketing, Keyword Research, Link Building, Marketing, Search Engine Marketing (SEM), SEMrush, SEO, Website Audit, Website Optimization Budget: $30 - $250 USD
Animated Mary Poppins Video Background Category: 2D Animation, 3D Animation, Adobe Animate, Adobe Creative Cloud, After Effects, Animation, Caricature & Cartoons, Video Production Budget: $30 - $250 AUD
15 Mar 2026 04:57 GMT
African Sports Betting Site & App Category: Android, API Integration, Cloud Computing, Database Management, IPhone, Mobile App Development, PHP, Web Development Budget: $1500 - $3000 USD
15 Mar 2026 04:56 GMT
Proyek Pemasukan Data Sederhana Category: Data Analysis, Data Entry, Data Management, Data Processing, Excel, Google Sheets, Typing, Virtual Assistant Budget: $15 - $25 USD
15 Mar 2026 04:55 GMT
Amazon Listing Category: Data Analysis, Data Collection, Data Entry, Data Management, ECommerce, Excel, Web Search Budget: $30 - $250 USD
15 Mar 2026 04:50 GMT
E-Commerce Customer Support Assistant Category: Accounting, Admin Support, Customer Experience, Customer Service, Data Management, Email Handling, General Office, Helpdesk, Virtual Assistant, Zendesk Budget: ₹750 - ₹1250 INR
15 Mar 2026 04:49 GMT
Garrys Mod Strafe Optimizer Category: C, Programming, C#, C++, Game Testing, Linux, Software Architecture Budget: £250 - £750 GBP
15 Mar 2026 04:49 GMT
WIX Portfolio Redesign & SEO Category: Content Strategy, Graphic Design, Internet Marketing, Link Building, Page Speed Optimization, SEO, Web Design, Web Development, Website Optimization, Wix Budget: $30 - $250 USD
