Browse categories
Explore
Fiverr Pro
English
$
USD
I will build retell ai agent, vapi ai calling agent, ghl ai voice agent ai cold calling
Jimmy K
Level 2
5.0
5.0
What people loved about this freelancer
alleymat
Germany
I had a great experience working with Jimmy as a Retell AI developer. He built a highly effective AI appointment booking system for my business and seamlessly...
djnathanshane
United States
Jimmy is very professional at what he does and he works very fast. He’s very thoughtful and nice with his communication. He knows how to use tools for Integration,...
danieladebay351
United Kingdom
Excellent, Jimmy was very helpful. Helped me complete my project incredibly quickly and I’m pleasantly surprised. Very underrated and deserves much more jobs. 10/10
growingrich
United States
Jimmy is amazing! His work is absolutely the best! I have used many people and no one works like Jimmy and his team. I have so many more projects for him. Thank...
growingrich
United States
All I can say is wow wow wow!! Not only did Jimmy deliver my AI outbound caller fast but the attention to details with Jimmy is amazing! He listens. He does...
About this gig
Are you struggling with endless manual calls, CRM or Google Sheet updates, and appointment scheduling?
Manual outreach and data entry waste time, reduce productivity, and limit growth. I build Smart AI calling systems using Retell AI and VAPI AI to create Smart AI voice agents and AI cold calling agents for inbound and outbound automation.
I specialise in Retell AI voice agent development and Vapi AI calling agent integration that connects seamlessly with GoHighLevel, Google Sheets, Cal com, and Google Calendar. Retell AI calling agents automate conversations, qualify leads, schedule appointments, update CRMs, and deliver real time call summaries.
My solutions help you reduce costs, increase conversions, improve response speed, and scale your business with smart AI phone automation.
WHAT I OFFER:
- AI Voice Agent Development (Retell AI & VAPI AI)
- AI Cold Calling Agent for outbound sales
- AI Calling Agent for inbound support
- Lead Qualification Automation
- CRM & GoHighLevel Integration
- Google Sheets Data Sync
- End of Call Summary Automation
- AI Appointment Setter (GHL, Google Calendar & Cal com)
- Automated Follow Up Calling System
N.B: Kindly message me first before placing an order!
Get to know Jimmy K
Jimmy K
AI AGENT AUTOMATION EXPERT
Level 2
- FromNigeria
- Member sinceFeb 2025
- Avg. response time1 hour
- Last delivery3 days
Languages
English, German, French, Spanish, Dutch
Hi, I am Jimmy, an AI Voice Agent and AI Automation Expert helping businesses enhance customer engagement, qualify leads, and book appointments with intelligent voice and chat solutions. I build and deploy AI voice agents and conversational AI chatbots using Vapi AI, Retell AI, and GoHighLevel to automate customer interactions, provide support, and drive business growth.
I also build and implement powerful automation workflows using Make com, n8n, Zapier, and GoHighLevel, including CRM automation, lead nurturing, sales funnels, pipeline management, and business process automation.
My Portfolio
Other Chatbot Development Services I Offer
FAQ
What Platforms Do I Use to Develop AI Voice and AI Calling Agent?
I build custom AI Voice and Calling Agent using Retell AI and VAPI AI. These advanced platforms offer powerful voice recognition, natural language processing, and smooth integration with different applications to enhance functionality and user experience. Retell AI | Vapi AI | Voice Agent
Can Retell AI Voice agent and Vapi AI Voice Agent Connect with CRM Systems?
I connect Retell AI Voice agent and Vapi AI Voice Agent to Google Sheets for data, HubSpot or GoHighLevel for CRM, and Cal com, Google Calendar, or GoHighLevel Calendar for scheduling. Retell AI | Vapi AI | Retell AI Voice Agent | AI Calling Agent | Vapi AI | Retell AI | Vapi AI | Retell AI
How does the Retell AI Voice agent and Vapi AI Calling Agent & AI cold calling process work?
The Retell AI Voice and Vapi AI Calling Agent & AI cold agent automatically dials your lead list, speaks with potential customers using a human-like voice, answers common questions, and captures key details. If the lead qualifies, the AI can schedule a meeting or transfer the call to a real agent.
Can the Retell AI Voice agent and Vapi AI Voice Agent transfer calls to a human?
Absolutely. If a lead wants to speak with a real person or needs complex support, the Retell AI Voice agent and Vapi AI Voice Agent can instantly transfer the call to your sales rep or support team. Vapi AI Calling Agent | Retell AI | AI Voice Agent | Vapi AI | AI Calling Agent | Voice Agent
How can Retell AI Voice agent and Vapi AI Calling Agent help reduce my customer service workload?
Retell AI Voice agent and Vapi AI Calling Agent can automatically answer routine questions, route calls, and resolve common issues (like order tracking or account updates), allowing your human agents to focus on complex or high value tasks.
Can the Retell AI Voice agent and Vapi AI Calling Agent handle both inbound and outbound calls?
Yes, Retell AI Voice agent and Vapi AI Calling Agent can handle incoming calls (support, inquiries) and make outbound calls (sales, appointment reminders, follow-ups) using natural, human like voices.
How natural and human sounding is the voice interaction?
Modern AI voice systems use advanced text to speech and speech recognition models (e.g., OpenAI, ElevenLabs, Deepgram) to make conversations feel smooth and human. You can even select tone, gender, and accent preferences. Voice AI Agent | AI Voice Agent | Retell AI | Retell AI Calling Agent
How much does it cost to run an AI voice agent?
Pricing usually depends on call minutes, number of agents, and telephony usage. For example it starts around $0.05–$0.10 per minute, plus additional model and phone charges. Costs are often lower than hiring and training full-time agents.
How do I train or customize the Retell AI Voice agent and Vapi AI Calling Agent for my business?
You can upload FAQs, scripts, or connect your knowledge base. For deeper customization, developers can tweak prompts or integrate APIs so the AI speaks in your brand’s tone and uses accurate business logic.
How secure are these AI voice agent interactions?
Both platforms are built with strong data security in mind. Retell AI & VAPI AI for example, follows SOC 2, GDPR, and HIPAA standards, ensuring conversations and user data remain private and compliant. Vapi AI Voice Agent | Vapi AI Calling Agent | Retell AI Voice Agent | Make com | AI Agent
Reviews
12 reviews for this Gig
| (12) | ||
| (0) | ||
| (0) | ||
| (0) | ||
| (0) |
Rating Breakdown
- Seller communication level
- Quality of delivery
- Value of delivery
Sort By
Most relevant
T t_uwood
United States
Worth the money, pay attention there is a lot of useful information.
$50-$100
Price
1 day
Duration
J 
Seller's Response
Helpful?S shek_nelson
Repeat Client
United States
Very very good, this is my second time working with him. Very nice job!
$200-$400
Price
6 days
Duration
J Seller's Response
Helpful?I 
insideoutus
Repeat Client
Philippines
Went above and beyond
$200-$400
Price
9 days
Duration
J Seller's Response
Helpful?I insideoutus
Repeat Client
Philippines
Jimmy was fantastic! He fixed everything and completed the work on time.
$200-$400
Price
12 days
Duration
J Seller's Response
Helpful?S shek_nelson
Repeat Client
United States
Amazing work, just fabulous.
Up to $50
Price
2 days
Duration
J Seller's Response
Helpful?
Reviews
12 reviews for this Gig
| (12) | ||
| (0) | ||
| (0) | ||
| (0) | ||
| (0) |
Rating Breakdown
- Seller communication level
- Quality of delivery
- Value of delivery
Sort By
Most relevant
T t_uwood
United States
Worth the money, pay attention there is a lot of useful information.
$50-$100
Price
1 day
Duration
J Seller's Response
Helpful?S shek_nelson
Repeat Client
United States
Very very good, this is my second time working with him. Very nice job!
$200-$400
Price
6 days
Duration
J Seller's Response
Helpful?I insideoutus
Repeat Client
Philippines
Went above and beyond
$200-$400
Price
9 days
Duration
J Seller's Response
Helpful?I insideoutus
Repeat Client
Philippines
Jimmy was fantastic! He fixed everything and completed the work on time.
$200-$400
Price
12 days
Duration
J Seller's Response
Helpful?S shek_nelson
Repeat Client
United States
Amazing work, just fabulous.
Up to $50
Price
2 days
Duration
J Seller's Response
Helpful?
