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sipho_nkosi

Sipho N

@sipho_nkosi

AI Chatbot and Automation Developer

United Kingdom
English, Spanish, German, French, Italian, Welsh, Irish, Chinese, Tagalog, Arabic, Vietnamese
About me
I build AI chatbots, custom GPTs, RAG solutions, AI voice agents, and workflow automations that help businesses save time, capture leads, and improve customer support. I specialize in OpenAI, Claude, LangChain, custom LLMs, Retell AI, Vapi, Twilio, GoHighLevel, and Zapier integrations. From AI cold calling agents and virtual receptionists to ChatGPT website widgets, WordPress chatbots, and Claude powered workflows, I deliver tailored solutions. Every project includes testing and a clear handover, with you retaining ownership of your accounts and code. Message me before ordering.... Read more

Skills

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sipho_nkosi
Sipho N
Offline • 
Average response time: 1 hour

See my services

AI Chatbot Development
I will llm chat agent, train custom llm models, lang chain, custom gpt, rag ai chatbots
From$30 / projectMore details
AI Implementation & Deployment
I will ai cold calling retell ghl voice agent twilio voice agent, vapi ai calling agent
From$400 / projectMore details

Portfolio

Work experience

Upwork

Upwork

Freelance • 1 mo

AI Chatbot and Automation Developer

Oct 2026 - Present • 0 mos

I build AI chatbots, LLM chat agents and automations that help small businesses and support teams answer customers faster. What I do: RAG chatbots that answer from a client's own documents, with source citations and human handoff LangChain LLM chat agents and custom GPT setups Website chat widgets, including WordPress Zapier integrations that connect websites and apps AI voice receptionists using Retell, Vapi or Twilio Claude Code and Skills setup How I work: discovery, build, test on the client's real questions, then a documented handover. Clients keep ownership of their accounts, code and API keys. Tools: LangChain, OpenAI and Claude APIs, Zapier, WordPress.

AI Integration and Automation Developer

Sep 2026 - Present • 1 mo

I build and fix AI integrations and automations for small businesses: chatbots, Zapier workflows, and connections between tools and APIs. I check that each integration works on real data before delivery and leave clear handover notes. Tools: Zapier, OpenAI API, LangChain, WordPress