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rowanhaly

Dariel S

@rowanhaly

AI Automation Engineer building RAG chatbots and workflows

Philippines
Anglais
Certaines informations sont présentées en anglais.
À propos de moi
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.... Plus d’infos

Compétences

r
rowanhaly
Dariel S
hors ligne • 
Temps de réponse moyen de 1 heure

Voir mes services

Applications Web Full stack
I will build ai agents and workflow automation for your business
De200 $US / projetPlus de détails

Portfolio

Expérience professionnelle

Optum

Senior Full Stack Engineer

Optum • Temps plein

Oct 2022 - Present • 4 yrs 1 mo

I build AI and workflow automation for healthcare claims, prior authorization, and medical coding. - Built a RAG system (AWS Bedrock, OpenSearch) that recommends medical codes from clinical documents. 300+ coders use it daily, accepting 85% of recommendations and cutting manual work by 35%. - Designed confidence-based routing with human review and audit trails, so uncertain AI results are checked before reaching billing. - Automated 65% of prior-authorization requests with a 200+ rule engine handling 50,000+ weekly requests, cutting turnaround from 72 hours to under 24. - Led 15+ event-driven microservices (Node.js, NestJS, Kafka) at 99.95% availability. - Resolved a 2M+ message Kafka backlog, cutting consumer lag by 95%. Tech: Node.js, TypeScript, AWS, OpenSearch, Kafka, PostgreSQL, React, Vue.js

Accenture

Full Stack Engineer

Accenture • Temps plein

Jul 2020 - Aug 2022 • 2 yrs 1 mo

Worked as a Full Stack Engineer focusing on enterprise platforms, including order management and supply-chain integration. Utilized Java and Spring for backend development alongside frontend technologies. Contributed to building observable services and honest data models for complex business systems within a consulting environment.