AI Engineer — Conversational AI, Voice, LLM, Retell
Project Brief We're building an AI voice agent that handles 14,000+ inbound calls per month for a real estate law firm — answering questions, verifying caller identity, routing to the right staff, and escalating when needed. The agent needs to sound warm and professional, enforce strict compliance rules, and never provide legal advice. This is a production-grade conversational AI project where prompt quality, workflow design, and telephony integration all matter equally. Must-Haves LLM prompt engineering — designing, testing, and iterating on prompts that control agent behavior in production (voice/phone context strongly preferred over chatbot-only experience) Conversational AI workflow design — multi-step flows with branching logic, intent detection, and error handling Experience with at least one voice AI or conversational AI platform — Retell, Vapi, Bland, Voiceflow, Amazon Connect, Twilio Voice, or similar Experience working with LLM APIs (OpenAI, Anthropic, or similar) — model selection, token cost management, and latency tradeoffs Detail-oriented mindset — a small prompt change can cause the agent to disclose sensitive information or sound robotic. Precision matters. Professional English proficiency — clear written communication in Slack and async updates
Nice to Have
Experience with ElevenLabs or similar TTS platforms Compliance-sensitive AI design — experience building systems where the AI must enforce rules about what it can and cannot say (healthcare, finance, legal, or similar regulated domains) Familiarity with telephony concepts — PBX routing, PSTN call transfers, SIP Experience setting up call analytics — scoring, sentiment analysis, intent categorization, and accuracy monitoring Background in real estate, legal, or other high-compliance industries
What You Will Do
Configure and tune the AI voice agent on the Retell platform — conversation flows for call greeting, intent detection, caller routing, wire verification, closing date inquiries, and escalation handling Write and iterate on LLM prompts that control the agent's personality, decision-making, and compliance behavior Design multi-step conversation workflows with branching logic (e.g. caller asks about wire instructions → verify identity → look up file → confirm or escalate) Configure the agent's knowledge base — staff directories, office information, FAQs, and process explanations Work on the telephony integration layer — understanding how calls route from the PBX through to the agent and how the agent transfers calls back to specific extensions Own the analytics and quality layer — call scoring, sentiment analysis, intent categorization, and accuracy monitoring using Retell's analytics and custom tooling Collaborate closely with the backend engineer who builds the APIs the agent calls, and with the technical lead Why This Could Be Your Next Big Move 🎙️ Real voice AI in production — Not a demo or a POC. You're building an agent that handles tens of thousands of real calls per month, with real compliance stakes. 🧠 Prompt engineering that actually matters — This isn't chatbot tuning. You're designing the decision logic that determines what the agent says, what it withholds, and when it escalates. ⚖️ High-stakes, regulated domain — Experience building compliant AI for legal and real estate is rare and valuable. This role puts that on your resume. 🚀 Greenfield ownership — You're shaping the architecture of the agent from the ground up, with direct impact on how the product evolves. Benefits & Compensation 💵 $5,000/month — paid in USD, bi-weekly via Deel 🌎 Fully Remote — work from anywhere in Latin America 📄 Long-term contract — starting with a 6-month contract, then full-time 🏖️ Paid PTO — competitive package 🤝 Referral Program — earn a bonus for referring talent that gets hired To Apply Please send your resume in English. Include the following: 🔗 LinkedIn Profile URL (required) 💻 GitHub Repository or project examples (required) ✉️ Cover Letter — tell us about a conversational AI or voice project you've built and the challenges you solved (optional but encouraged) About OneSeven Tech OneSeven Tech is an AI-enabled software agency headquartered in Miami, with 8 years building AI-driven digital products for scaling and established companies. We specialize in consulting, designing, and developing ROI-focused solutions across 22 industries — from healthcare and legal to real estate and fintech. Our multidisciplinary team blends AI strategy, UX/UI, web and mobile engineering, and machine learning to deliver real outcomes. With 101+ successful projects completed and a 4.9/5 client rating, we work as a deeply embedded partner — not just a vendor. We operate as a remote-first organization with a global team and a US-based client portfolio. Salary: 4000 - 5000 USD Per month Apply To This Job