Roberto Chavez Jr

Software Engineer

Resume

Work Experience

April 2026 - Present

CV Concierge A.I. LLC

Founder

Founded an agency building AI voice agents for local businesses in the Coachella Valley and Palm Springs — home services, healthcare, real estate, and professional services.

Achievements / Tasks

  • Designed and ship AI voice agents that answer calls 24/7, qualify leads, route by intent, book appointments, and run follow-up sequences.
  • Built call qualification, CRM logging, and proposal generation flows so owners stop losing leads to unanswered phones and cold follow-ups.
  • Offer both cloud-hosted and self-hosted deployments so clients with stricter data requirements (healthcare, legal) can keep inference on-prem.
  • Running early-stage sales, onboarding, and delivery for the first cohort of customers.

Tech Stack

Languages: Python, Typescript, Go

AI / ML: faster-whisper, vLLM, Kokoro, LangChain

Infrastructure: LiveKit, Neon, Vercel

Frameworks: Svelte 5, SvelteKit

January 2026 - April 2026

Vital4U - Precise Nutrition International, Inc.

AI Specialist | Backend Engineer

Architected a self-hosted AI voice platform on dual NVIDIA DGX Sparks, replacing third-party services and eliminating per-minute API costs.

Achievements / Tasks

  • Built real-time voice pipeline with faster-whisper (STT), vLLM + Qwen3 / GLM-4.5 (LLM), and Kokoro (TTS), achieving fast end-to-end latency.
  • Designed a node graph FSM for call routing covering intent, order collection, account lookup, returns, and escalation using structured exit tokens.
  • Vector DB for RAG, building isolated per-project knowledge bases with LangChain ingestion pipelines for multi-format data.
  • Self-hosted LiveKit (Go / Node.js / Rust) as WebRTC orchestration layer and built a Svelte 5 frontend dashboard for agent monitoring and configuration.

Tech Stack used at Employer

Languages: Python, Typescript, Go, Rust

AI / ML: faster-whisper, vLLM, Qwen3, GLM-4.5, Kokoro, LangChain

Infrastructure: NVIDIA DGX Spark, LiveKit

Frameworks: Svelte 5

Feb 4, 2020 - September 2025

ESP Personnel

Web Dev | Full Stack

Work closely with stakeholders and upper management in healthcare. Initially hired as a front end web developer but given opportunities to work on back end .NET frameworks (4, 6, 8) and database schemas in Microsoft SQL Server. Depending on the project, including previous ones, I switch between front end or back end frameworks.

Favorite project: Build and maintain functional Learning Management Software ( https://orientation-plus.org ) coded in Blazor (.Net Core), Typescript, and MS-SQL with Dapper ORM. Facility and/or Healthcare Staff can use GUI UI tools, with animation, to create Orientation courses for nurses. This also includes early stages allowing designers to create mobile friendly courses.


Tech Stack used at Employer

Languages: C#, Typescript, SQL

Libraries: Reveal JS, Interact JS, DragSelect, DapperORM

Frameworks: .NET (4, 6, 8), Blazor WebAssembly, Svelte

April 18, 2025 - August 2025

Prosway (Part-time)

Software Engineer

Developing a CRM applicatiton in Real Estate and match making system to automate the less need for real estate agents.


Tech Stack used at Employer

Languages: Typescript, PostgreSQL

Tools: Supabase Firebase

Frameworks: Svelte Kit

Feburary 2016 - June 2016

Tutree

Subject Tutor
Computer Science Tutor: Data structures. Through tutoring, I enable my students to become confident in their coding abilities, while also strengthening my own abilities.
April 2015 - August 2015

UCSC Engineering Mentor

Mentor
I was a Peer Mentors who provide personal and academic advice, support, and encouragement for all participants of the ESB program.

Education

2017 - 2019
UCSC: Machine Learning (AI) Thesis (B.S.)
September 2012 - June 2017
UCSC: Computer Engineer (B.S.)