Retell AI Voice Automation Engineer

@sufyanasmat38

As a software engineer, I'm excited to express my keen interest in your Retell AI Voice Automation Engineer role. My precise comprehension of the Retell AI system, coupled with extensive experience in successful voice agent productions within various industries, makes me a standout candidate for your project. The HVAC, electrical, roofing, trades, and medical-spa sectors aren't foreign to me; I've consistently delivered effective and efficient solutions for similar verticals through my automation expertise.

@adeelpirzada

Hi, I am Adeel. I built MyHeartLine, a voice AI product where an agent calls people on a schedule, holds a natural conversation, then transcribes and routes the summary to the right people with alerts when something needs attention. That is the same class of problem as your HVAC and trades agents. For this I would design the Retell agent around clear intent capture first, then wire n8n for the CRM and calendar sync so failures are visible rather than silent. GoHighLevel integration is straightforward from that side. I can join discovery calls and turn loose requests into a working flow on the spot. Available to start this week at 30 to 40 hours. Are most of your clients already on GoHighLevel, or is that still being decided per client?

@Jennycreation

Hello Sir, I have already worked on many **cryptocurrency trading systems, automated trading platforms, and exchange API integration projects**. I can also show you demos of my previous work. I am a full-time freelancer with **17+ years of experience** in software development, trading automation, and financial API integrations. My relevant experience includes: * Cryptocurrency trading platforms * Binance and Bybit API integration * MT4 and MT5 trading automation * C#-based copy trading software * Arbitrage trading systems (Binance ↔ Bybit) * Automated order execution (Buy/Sell/Square Off) * Portfolio and position management * Margin and risk management features * Real-time market data integration * Trading bots and strategy automation I have already developed a **C#-based Copy Trading Software** where trades from a master account are automatically copied to multiple child accounts. I have also built **arbitrage trading systems** between Binance and Bybit using their official APIs. In addition, I have developed trading platforms using **Zerodha Kite API, Alice Blue API, Angel One API, and Profitmart API**, including features such as order placement, position management, square-off, margin calculation, and automated trading execution. I have also implemented strategy automation using **AmiBroker CSV integration**. I can start working immediately and deliver a secure, scalable, and reliable trading solution based on your requirements. Please contact me in private chat so we can discuss your project in detail. I will be happy to show you **live demos and examples of my previous trading projects**. Looking forward to working with you. Thanks & Regards, Sanjay

@HamparProd

I work hands-on with AI agent integrations, APIs, webhooks, workflow automation and production backend systems, and I’m comfortable owning the complete path from call flow through CRM/calendar actions and deployment. With Retell, I structure external actions through controlled custom functions and verified webhooks, with validation and idempotency around appointment booking, CRM updates, transfers and follow-up workflows. I’m also comfortable wiring n8n/Make-style automations and troubleshooting end-to-end failures rather than treating the voice-agent configuration in isolation. I can personally join discovery/demo calls and explain the technical tradeoffs clearly to non-technical clients. Rate: $15/hr. Initial availability: 20 hours over 5 working days. I can complete the requested application form and start immediately after award.

@longngoc2307

==== Hi - Truong here ==== "PRODUCTION-READY RETELL AI VOICE AGENTS" — you need someone who can handle the full build, API/webhooks, CRM/calendar sync, and live troubleshooting. I’d structure each agent around Retell’s call flow, with n8n/Make handling webhooks and CRM/calendar actions. I’d also test failure cases like missed API responses, duplicate bookings, and transfers before going live so the agent doesn’t break during real customer calls. For GoHighLevel or Vapi clients, I’d keep the integrations separated from the voice logic so each client can be changed without rebuilding the whole agent. Which CRM and calendar integrations do you use most often with your Retell projects? Looking forward to work with you.

@lazarr4

Hello, I can build Retell AI voice agents as controlled order-processing workflows rather than open-ended chatbots, which keeps them reliable and easy to maintain for trades clients. I built a similar system for a roofing client—used Retell’s intent detection to route calls to the right team, then connected it to n8n to log leads in GoHighLevel, which cut their manual data entry by 60%. I’d approach this by designing the agent with clear intents first, then layering n8n automations to handle the workflow, not just the voice part. The biggest improvement will come from reducing back-and-forth in calls by making the agent guide customers to the right solution. Proper setup will save your clients time and frustration by making the agent feel like a real assistant, not a scripted bot. I’ll also document the workflow so future updates are straightforward. Once deployed, I’ll test the agent live with you to confirm it handles real calls smoothly. If this approach works for you, I’d be happy to discuss the project in more detail. Thanks, Lazar.

@codeandcommand

I have hands-on time with Retell AI, mapping conversation flows, setting up webhooks, and connecting it to n8n and GoHighLevel for lead routing. For a voice agent project like this, the tricky part is usually handling call transfers and post-call data sync cleanly. I can start today and have a working agent live in 3 days. The budget and timeline here are early estimates based on the post. Once we talk through the full call flow and integrations, the real numbers might shift up or down. Want me to send a quick plan for how I'd structure the agent?

@jaroslavcaprata

Hello, I build production voice-agent and automation systems where the difficult part is not making the agent talk—it is making every CRM, calendar, webhook, and follow-up action work reliably. I can own the full Retell AI workflow: • Inbound/outbound agent configuration • Prompt and conversation-flow design • Appointment booking and rescheduling • Custom functions and secure webhooks • GoHighLevel contact/opportunity synchronization • n8n / Make automation workflows • Calendar and CRM integrations • Call transfer, SMS and follow-up actions • Post-call summaries, dispositions and lead updates • Retry/error handling, logging and end-to-end testing For HVAC/trades, I’d structure agents around qualification, service area, urgency, booking and human escalation. For medical-spa clients, I’d keep workflows appropriately constrained around scheduling and approved business information. I’m also comfortable joining discovery/demo calls, translating requirements into technical workflows, troubleshooting live integrations, and documenting each deployment for handover. I’m interested in an ongoing client-facing engineering relationship rather than one-off automation work.

@David198493

Hello, For voice automation projects, the difficult part is rarely configuring the agent itself — it is designing reliable conversation flows, handling edge cases, and ensuring integrations continue working when real customer data enters the system. How are you currently managing agent performance validation after deployment, especially for failed transfers, incomplete lead data, and CRM synchronization issues? I’d approach this by building production-ready Retell AI workflows with clear conversation logic, webhook-driven integrations, automated testing scenarios, and reliable monitoring across CRM, calendar, and business systems. I’ve developed AI automation systems using LLM integrations, API/webhook architectures, Python/Node.js backends, workflow automation platforms, and production SaaS integrations, focusing on reliability, maintainability, and smooth client handoffs. I’d be glad to help build and deploy voice agents that deliver consistent results for your clients.

@michela542

Hi I have developed several AI automation systems, voice agents, CRM integrations, and workflow platforms using APIs, webhooks, n8n, GoHighLevel, WhatsApp, and AI services. ? The most important and difficult part is making voice agents reliably communicate with CRMs, calendars, and automation workflows in real time. ✅ In similar AI automation projects, the main challenge was connecting conversational agents with external business systems while keeping every call outcome and customer action synchronized. I solved this with webhook-driven workflows, REST APIs, structured event handling, CRM synchronization, calendar integrations, and n8n automation, including validation, retries, and error handling so each conversation could trigger the correct business workflow without duplicate actions. ✅ This approach has supported thousands of conversations and automated workflows, including lead qualification, appointment booking, CRM updates, follow-ups, WhatsApp notifications, and human handoffs, with reusable architectures that can be adapted to different client industries. I am ready to discuss your Retell AI technical requirements, architecture, and prepared specifications in detail. With this kind of experience, I can contribute to implementing your idea and vision. Looking forward to discussing your vision with you. Best regards Michel

@Cruz1217

Building voice agents for HVAC and medical-spa clients means the conversation needs to handle interruptions and technical jargon without dropping the call. I would start by mapping out the specific call flows for each industry so the agent sounds natural, then wire the backend to n8n for the CRM and calendar logic. I have built similar voice systems that handle live call transfers and hold music, so I can get your agents running fast. A common mistake is connecting the webhook before the audio quality is stable, which causes dropped calls during handshakes. I would test the audio pipeline thoroughly before going live to prevent those frustrating disconnects. You will get a fully tested agent that handles the specific quirks of your client's phone systems. I am ready to start immediately.

@Champian

Do you have Retell AI API access and a sample client flow we can start from? We can assign a dedicated voice-AI engineer working 8 hours a day, 5 days a week — what would you want them to pick up first? Whenever you're available, drop me a message and we'll go over everything before starting. Thank you!

@stanislavk51

Hello, I am a Retell AI Voice Automation Developer with over 10 years of experience in the API and workflow automation field. I can build reliable voice agents for HVAC, electrical, roofing, trades, and medical-spa clients, from discovery through live production deployment. I will configure and test Retell AI agents, connect CRM and calendar systems through API and webhooks, and create dependable workflows with n8n or Make.com. I can also support GoHighLevel and Vapi environments, troubleshoot live issues, and verify every call flow end to end. I understand this role requires clear client communication. I will join discovery and demo calls, explain technical choices in simple language, confirm feasibility quickly, and turn unclear requests into maintainable solutions. Each delivery will include concise documentation and a practical handover walkthrough. I am ready to help create voice automations that work reliably under real client conditions and time pressure. Thank you for reading my proposal to the end, and I sincerely hope to work on this project with you, Best, Stanislav

@abela399

Hi, The critical part is making the voice agent reliable beyond the demo, especially around API failures, calendar conflicts, CRM updates, call transfers, and webhook retries. I can own the Retell workflow end to end, with n8n handling the surrounding automation and integrations cleanly. I have hands-on experience building AI agent workflows, n8n automations, API/webhook integrations, CRM connections, and production systems. I’m comfortable translating client requirements into concrete call flows, testing edge cases, troubleshooting live integrations, and explaining technical decisions during discovery or demo calls. For HVAC and service businesses, booking and lead data must stay synchronized across the voice agent, CRM, and calendar without duplicate actions or lost calls. Which CRM and calendar combination appears most often across your current Retell client projects? Kind regards, Abel.

@hakan1022

Hi, there I recently delivered a production‑ready Retell AI voice agent for a national HVAC chain, integrating GoHighLevel, Google Calendar, and a custom n8n orchestrator to trigger ticket creation and follow‑up emails. I implemented multi‑domain speech models, webhook‑based stateful dialogs, and a resilient error‑handling middleware that retries failed API calls up to three times before alerting the ops team. The main challenge was keeping latency under 1 s while parsing nested JSON from Vapi; I solved it by pre‑serializing intent payloads and caching common responses in Redis. I plan to start with a modular architecture: a lightweight FastAPI service exposing the voice endpoint, a dedicated n8n workflow for CRM sync, and a GoHighLevel webhook listener. I will use Docker Compose for local dev and CI pipelines, ensuring zero‑downtime deployments via Helm on Kubernetes. For calendar integration, I’ll use the Google Calendar API with a background worker that reconciles event status every 5 minutes. If I use my previous experience, your project will likely be completed successfully. Hope to discuss this in detail. Through detailed discussion, I think I can find the better solution to finish your project successfully. Thank you

@ronanfebruary

Hey — saw your post about needing a Retell AI Voice Automation Engineer. The biggest snag with Retell often comes down to customizing voice flows to feel natural without breaking automation. Quick question: Are you looking to build entirely new workflows from scratch, or optimize existing ones? I’ve been hands-on with Retell AI automations and helped smooth out voice interactions that boost engagement. If you send over your current setup or a spec, I can take a look and share some ideas.

@anathim23

I have extensive experience working with Retell AI and can efficiently translate its features into practical, hands-on solutions. My background includes developing voice automation workflows that enhance user interaction while maintaining system reliability. I focus on understanding client goals to customize Retell AI implementations that deliver seamless and scalable voice experiences. My approach emphasizes clean, maintainable code and thorough testing to ensure smooth deployment. Quick question before I suggest an approach: Are you already committed to a specific deployment environment, or flexible on cloud platforms?

@cristiann67

Hello, Having worked on numerous AI integration and automation projects throughout my 7-year career, I am confident in delivering the exceptional standard of work your HVAC, electrical, roofing, trades, and medical-spa clients need. In particular, my experience with Retell AI aligns perfectly with your project requirements. I possess advanced skills in configuring, training, and deploying voice agents as well as developing tight API and webhook integrations - all elements that are crucial to the success of your projects. Not only am I adept at building production-ready automations, but I also place paramount importance on clear communication and reliability under pressure. These traits are key in delivering on-time projects - all while ensuring optimum customer satisfaction. Understanding that this is a client-facing role, I appreciate the significance of being able to assess feasibility on the spot and seamlessly turning loose client requests into concrete solutions. Lastly, my full stack development proficiency and comprehensive knowledge in mobile, web applications and backend systems make me an ideal candidate for implementing robust CRM integrations while working with platforms such as GoHighLevel or Vapi. Should you entrust me with this role, you can count on consistent delivery of concise documentation and a thorough handover procedure for easy maintainability post-project deployment. I'm eager to discover more about your pr Thanks!

@PINESCRIPTERR

Hi, I understand you need a hands-on engineer who can take Retell AI voice agents from architecture and configuration through API integrations, testing and production deployment for trades and medical-spa clients. I can build the complete voice workflow around Retell AI, connecting agents to CRMs, calendars and third-party services through REST APIs, webhooks and automation platforms such as n8n or Make. I can structure the workflows so calls, appointments, customer data and follow-up actions are handled reliably, with proper validation, error handling and logging. I can also work with GoHighLevel or Vapi environments where required, troubleshoot integration issues and translate client requirements into maintainable technical solutions. For production deployments, I’ll test the complete call flow, webhook events, API failures, scheduling edge cases and CRM updates before handover, with concise documentation and a walkthrough for the client. I’m comfortable working directly from technical requirements and participating in discovery/demo discussions to determine feasibility and propose practical implementation approaches. Best regards, Houssame