AI Engineer specializing in building and deploying AI automation workflows, intelligent data pipelines, and multi-channel AI assistants (voice, chat, and web). Experienced in integrating LLM applications with third-party platforms and improving model outputs through advanced prompt engineering. Track record of delivering end-to-end AI systems for lead qualification, appointment scheduling, customer support automation, and compliance monitoring—using tools like Retell, Vapi, LangChain/LangGraph, and Zapier/Make/n8n—while translating business needs into measurable results.

Happiness Chibuzor

AI Engineer specializing in building and deploying AI automation workflows, intelligent data pipelines, and multi-channel AI assistants (voice, chat, and web). Experienced in integrating LLM applications with third-party platforms and improving model outputs through advanced prompt engineering. Track record of delivering end-to-end AI systems for lead qualification, appointment scheduling, customer support automation, and compliance monitoring—using tools like Retell, Vapi, LangChain/LangGraph, and Zapier/Make/n8n—while translating business needs into measurable results.

Available to hire

AI Engineer specializing in building and deploying AI automation workflows, intelligent data pipelines, and multi-channel AI assistants (voice, chat, and web). Experienced in integrating LLM applications with third-party platforms and improving model outputs through advanced prompt engineering.

Track record of delivering end-to-end AI systems for lead qualification, appointment scheduling, customer support automation, and compliance monitoring—using tools like Retell, Vapi, LangChain/LangGraph, and Zapier/Make/n8n—while translating business needs into measurable results.

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Experience Level

Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Intermediate
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Language

English
Advanced

Work Experience

Independent AI Engineer — Self-Directed AI Projects at Independent (Self-Directed Projects)
June 1, 2026 - July 31, 2026
Built and deployed a RAG chatbot using LangChain and ChromaDB for document-grounded Q&A, and developed a persistent long-term memory chatbot using LangChain/LangGraph. Created a BERT-based FAQ chatbot with Hugging Face Transformers and designed a LangGraph-based tool-using agent for multi-step autonomous tasks. Implemented semantic search with Pinecone and built a voice AI lead follow-up agent to automate outbound re-engagement calls. Also developed an NLP text classification pipeline using transformer-based models to categorize unstructured text.
AI Engineer at Diginomic
January 1, 2026 - January 1, 2026
Analyzed CRM infrastructure and designed an integration strategy connecting Retell voice agent capabilities to Diginomic’s CRM without disrupting workflows. Built voice agents to handle routine inquiries with high automation coverage and improved first-contact resolution through conversational flow optimization. Implemented compliance monitoring and call quality assurance, maintaining high system uptime.
AI Engineer at Leaf & Life
January 1, 2026 - January 1, 2026
Migrated a pharmacy receptionist voice agent from Vapi to Retell with knowledge base integration. Connected Make.com and Twilio for SMS notifications, booking emails, and real-time appointment confirmations. Built a time-aware scheduling system with timezone awareness and business-hour validation to reduce double bookings. Deployed an autonomous scheduling system that handled the majority of booking requests with measurable improvements in patient satisfaction.
Independent AI Engineer — Self-Directed AI Projects at Self-directed
January 1, 2026 - July 1, 2026
Built and deployed RAG and chatbot systems using LangChain and vector databases (ChromaDB/Pinecone). Engineered long-term conversational memory across sessions using LangGraph. Developed fine-tuned transformer-based FAQ automation and multi-step tool-using agent workflows. Implemented semantic search and a voice AI lead follow-up agent for outbound re-engagement, plus an NLP text classification pipeline for categorizing unstructured data.
AI Engineer at Moore Studios
October 1, 2025 - October 1, 2025
Developed multiple AI voice agents for lead generation, appointment scheduling, customer data collection, and workflow automation. Integrated agents with HubSpot, GoHighLevel, Salesforce, and Zoho CRM. Automated data syncing using n8n/Zapier/Make.com to eliminate manual entry and reduce processing time. Built multi-vertical qualification automation handling large lead volumes with high accuracy.
AI Engineer at Tanta Holdings
October 1, 2025 - October 1, 2025
Set up a Retell voice agent for B2B franchise partnership outreach with full HubSpot CRM integration (call logging, lead creation, contact updates). Designed qualification-based conversational flows and call transfer routing. Configured calendar booking as backup scheduling and completed extensive test calls before launch. Delivered documentation/training and deployed a production-ready system within days with minimal issues.
Voice AI Engineer at BW Solutions
September 1, 2025 - October 1, 2025
Integrated Vapi voice AI into an e-commerce sales funnel with dynamic call routing by buyer journey stage. Designed stage-specific prompts that adapted behavior and improved conversion. Implemented webhook integration for real-time inventory/pricing and order processing, reducing sync errors. Deployed a multi-stage inbound/outbound qualification system with strong accuracy over a short timeline.
Data Analyst & AI Developer at Freelance (Fiverr & Upwork)
January 1, 2025 - Present
Performed business analytics using SQL and reporting tools to generate actionable insights and improve decision speed. Built dashboards and automated reporting. Ran ETL over large datasets using MySQL/Excel to improve data accuracy. Built voice AI agents (Synthflow/Vapi) for recruitment, sales, and support automation. Engineered LLM-powered conversational workflows with webhook processing and multi-turn dialogue handling. Integrated AI solutions with GoHighLevel/Zapier/JotForm via API pipelines to reduce processing time.
AI Automation Engineer at UbiGrowth, Inc.
January 1, 2025 - September 1, 2025
Developed and deployed 20+ AI automation workflows integrating CRM, communication, and operational platforms through APIs/webhooks. Designed scalable data pipelines connecting LLM-powered services with CRM systems and tools to improve accuracy and reduce sync errors. Built multi-channel AI assistants across voice/chat/web for real-time processing. Implemented JSON configuration frameworks to speed up deployments and increase operational efficiency significantly.
Voice AI Engineer at Major Plumbing Co Inc
October 1, 2024 - October 1, 2025
Built a Vapi receptionist agent to handle inbound calls and route to departments/voicemail. Implemented CRM logging via webhooks and captured customer/service details. Designed a service evaluation agent to collect scope, timeline, budget, and urgency and route requests. Deployed email notifications with transcriptions/customer details quickly after calls. Implemented a dual-agent system to reduce manual handling and improve service team turnaround time.
Voice AI Engineer at Pulse Digital LLC
September 1, 2024 - October 1, 2025
Reviewed real customer call recordings to identify performance gaps, bugs, and flow issues impacting satisfaction/conversion. Implemented targeted fixes for mishearing, inappropriate responses, and transfer failures; validated changes against real call scenarios. Iteratively improved agent performance, reducing error rates and increasing inbound capacity while maintaining high satisfaction scores.
Graduate Intern (NYSC), Data Analysis at Green Institute
April 1, 2024 - April 1, 2025
Supported environmental data collection, processing, analysis, and reporting for research and sustainability programs. Processed datasets using Excel for publications and stakeholder reporting. Served as Moderator at the 5th World Environment Day Symposium (2024).
Virtual Assistant and CRM Software Management at Freelancer (Fiverr, Upwork)
February 1, 2021 - Present
Managed virtual assistant tasks including scheduling, communication, and data entry. Utilized CRM software to manage customer relationships and track engagement, and optimized CRM workflows to improve operational organization.
Virtual Assistant and CRM Software Management at Freelancer (Fiverr/Upwork)
February 1, 2021 - Present
Managed virtual assistant tasks including scheduling, communication, and data entry. Used CRM software to manage customer relationships and track engagement, and optimized CRM workflows.
Chatbot Developer at Freelance (Fiverr & Upwork)
January 1, 2021 - Present
Set up and customized Intercom chatbot/Help Center configurations and widgets for client websites. Trained a GPT-4 powered assistant (Fin AI) on company knowledge to improve query resolution accuracy. Configured email forwarding into the Intercom help desk. Built Intercom FAQs/workflows to streamline support tasks. Deployed Botpress and Tidio chatbot systems and integrated them on client websites to automate a large share of incoming queries.

Education

B.Sc. in Microbiology at Obafemi Awolowo University
January 1, 2018 - January 1, 2023
Graduate Intern (NYSC), Data Analysis at Green Institute
April 1, 2024 - April 1, 2025
Bachelor of Science (B.Sc.) in Microbiology at Obafemi Awolowo University
January 1, 2018 - January 1, 2023

Qualifications

The AI Engineer Course 2026: Complete AI Engineer Bootcamp
August 1, 2026 - August 23, 2026
Artificial Intelligence Fundamentals
August 1, 2026 - August 23, 2026
Intro to Programming
August 1, 2026 - August 23, 2026
Python
August 1, 2026 - August 23, 2026
Healthcare Systems Engineering
April 1, 2025 - August 23, 2026
HSE 1, 2, 3 / EIA
January 1, 2026 - August 23, 2026
Basics of Data Science
June 1, 2026 - August 23, 2026
Basics of Microsoft Power BI
June 1, 2026 - August 23, 2026
Basics of Artificial Intelligence
June 1, 2026 - August 23, 2026
Master ChatGPT
June 1, 2026 - August 23, 2026
Essentials of MS Excel, Formulas and Functions
June 1, 2026 - August 23, 2026
The AI Engineer Course 2026: Complete AI Engineer Bootcamp (Udemy)
August 1, 2026 - August 24, 2026
Artificial Intelligence Fundamentals (IBM)
August 1, 2026 - August 24, 2026
Intro to Programming (Kaggle)
August 1, 2026 - August 24, 2026
Healthcare Systems Engineering (Johns Hopkins University, Coursera)
April 1, 2025 - August 24, 2026
Healthcare Systems Engineering (HSE 1, 2, 3 / EIA) (ARP Technology)
January 1, 2026 - August 24, 2026
Basics of Data Science (UniAthena)
June 1, 2026 - August 24, 2026
Basics of Microsoft Power BI (UniAthena)
June 1, 2026 - August 24, 2026
Basics of Artificial Intelligence (UniAthena)
June 1, 2026 - August 24, 2026
Master ChatGPT (UniAthena)
June 1, 2026 - August 24, 2026
Essentials of MS Excel, Formulas and Functions (UniAthena)
June 1, 2026 - August 24, 2026

Industry Experience

Software & Internet, Healthcare, Professional Services, Media & Entertainment, Financial Services, Education, Retail, Telecommunications