[Hiring] Senior Conversational AI & Prompt Engineer @Scale Army Careers

Role Description

This role is open to candidates based in LATAM, Africa, and Eastern Europe. Please note that as this role supports U.S.-based clients, candidates must be available to work during U.S. business hours aligned with the client’s time zone.

Location: Fully Remote (Work from Home) | 9 AM – 5 PM EST

The Senior Conversational AI & Prompt Engineer will design, optimize, and maintain conversational experiences across voice and chat-based AI systems, ensuring natural, accurate, and clinically aligned patient interactions. This role requires deep expertise in prompt engineering, voice AI platforms, and conversational logic, with a strong focus on creating seamless digital experiences across multiple patient touchpoints in a telehealth environment.

Key Responsibilities

• Prompt Engineering & Optimization
  • Design, develop, and refine high-performance prompts for Voice AI agents and chatbots, ensuring clarity, engagement, and alignment with the brand’s clinical voice.
  • Debug and optimize prompts to improve response accuracy, natural language flow, and user satisfaction across both text and voice interactions.
  • Manage context continuity so AI systems maintain patient history and conversational state across chat-based and voice-based interactions.
• Platform & Technical Execution
  • Use Retell AI and Vapi for real-time voice interactions, focusing on low-latency responses and natural conversational turn-taking.
  • Utilize orchestration tools such as LangChain, OpenAI Assistants API, or similar frameworks to build logic-driven conversational experiences.
  • Implement SSML and phonetic optimization for voice applications, while using Markdown and structured data for chat interfaces.
• DTC Strategy & Patient Experience
  • Apply direct-to-consumer experience to tailor conversational flows for telehealth users, balancing empathy, medical guardrails, and conversion objectives.
  • Maintain a consistent AI persona across SMS, web chat, and phone interactions to create a unified concierge-style patient experience for GLP-1 users.
• Collaboration & Reporting
  • Partner with clinical, product, and engineering teams to align AI behavior with medical protocols and business goals.
  • Generate performance reports, analyze transcripts and call logs, and recommend improvements based on user feedback and behavioral data.
• Market & Trend Analysis
  • Monitor trends in speech-to-text, text-to-speech, and LLM reasoning to identify opportunities for innovation and competitive differentiation in telehealth.

Qualifications

• 5+ years of experience in prompt engineering across voice AI and text-based conversational systems.
• Proven experience with Retell AI and Vapi.
• Experience with chat orchestration frameworks such as LangChain, Intercom, OpenAI Assistants API, or custom LLM wrappers is highly preferred.
• Direct-to-consumer experience, particularly in health-related support or high-intent customer journeys.
• Experience running A/B testing on prompts to optimize conversion and information accuracy.

Requirements

• Strong analytical ability to evaluate conversational performance and optimize outcomes.
• Deep understanding of conversational design differences between spoken and written language.
• Ability to troubleshoot technical constraints related to real-time voice latency.
• High attention to detail and creativity in designing natural user experiences.
• Proactive problem-solving mindset within regulated telehealth environments.
• Adaptability in fast-moving product and healthcare settings.

Opportunity

This role offers the opportunity to shape conversational AI experiences at the forefront of telehealth innovation. The Senior Conversational AI & Prompt Engineer will directly influence how patients interact with digital care systems, working closely with cross-functional teams to build clinically responsible, scalable AI experiences in a rapidly growing health technology environment.

Application Process

To be considered for this role these steps need to be followed:

• Fill in the application form
• Record a video showcasing your skill sets