I will build ai agents and workflow automation for your business

R
rowanhaly
R
rowanhaly
Dariel S

About this gig

Tired of repetitive work slowing your team down? I build AI agents, chatbots, and workflow automation that handle the busywork for you.


At Optum (UnitedHealth Group), I built AI systems used daily in production:

- A RAG system that recommends medical codes from documents, used by 300+ coders, with 85% of suggestions accepted and 35% less manual work

- Automation that handles 65% of prior-authorization requests, cutting turnaround from 72 hours to under 24


What I can build for you:

- AI chatbots that answer questions from your own documents, website, or database (RAG)

- AI agents that complete multi-step tasks across your tools

- Workflow automation connecting your apps, CRMs, APIs, and databases

- AI features for your product, with validation and human review so mistakes don't reach customers


Tools: Python, Node.js, TypeScript, LangChain, LangGraph, AWS Bedrock, OpenSearch, PostgreSQL


Why work with me:

- 6+ years building production systems, not just demos

- Clear communication and honest estimates

- Clean, documented code you fully own


Message me before ordering with what you'd like to automate, and I'll suggest the simplest solution that works.

Get to know Dariel S

Dariel S

AI Automation Engineer building RAG chatbots and workflows

  • FromPhilippines
  • Member sinceSep 2026
  • Avg. response time1 hour
  • Languages

    English
I build AI automation that saves businesses time and keeps working reliably in production. At Optum (UnitedHealth Group), I built a RAG system on AWS that 300+ medical coders use daily, and automation that handles 65% of prior-authorization requests. I can build AI chatbots trained on your documents, automate your workflows, and connect your apps and APIs using Node.js, TypeScript, and AWS. 6+ years of experience, clear communication, and clean, documented code.

My Portfolio