Work Experience

AI Engineer

Arroyo Consulting — Nashville, TN, USA (Remote)

Sep 2024 – Present

• Designed and deployed AI agent architectures using LangChain, LangGraph, and LangSmith with LangFuse for tracing and evaluations.
• Implemented RAG pipelines for continuous scanning/classification of SAM.gov procurement opportunities aligned with client domains.
• Integrated n8n + MCP Servers + Power Automate to orchestrate cross-platform automations with LLM tool-calling.
• Built Playwright-based E2E validation agents; added TTS/STT voice interfaces for internal support flows.
• Optimized vector-store selection across MariaDB PGVector, Pinecone, and ChromaDB for latency and cost.

AI Technology Developer & Engineering Advisor

BEATT, USA

Jul 2017 - Sep 2024

• Led research projects, prototyping, and technology selection for computer vision, data acquisition, and device control.
• Developed two complete Ticket Vending Machine (TVM) software stacks: one integrated with ™Cubic transport API; another with full product catalog for South Shore Transportation Agency.
• Implemented custom drivers and monitoring for: Coin validators (CCTalk), Bill validators (Serial), QR readers (Serial), RFiD readers (Serial), custom HID ticket printers (hopt-schuler.com), card dispensers, thermal receipt printers, and Ingenico Pinpad via ChipDNA.
• Built TVM Manager (C# WinForms) for multi-server fleet configuration, status monitoring, and first-boot provisioning.
• Hardened systems with tamper sensors, comms loss recovery, and robust error handling.

Independent Consultant / Research Developer

Various Clients & Academic Groups

2010 – 2017

• Developed multiple Telegram bots (@TradingAlert_bot, @AdsVideoPlayer_bot, @ridesmx_bot, @bookServerbot) and Android/Unity3D apps with content sync and MD5 integrity checks.
• Built GymOnline (POS & access control) across 5 gyms with Arduino-based turnstile control and WinForms migration.
• Created VB.NET Basketball Scoreboard with hotkey-driven UX and dual-display support.
• Implemented OpenCV/YOLO pipelines with Intel RealSense for pedestrian/vehicle detection and onboard people counting.

Recent AI Work

• Documentation Retrieval (POC): Python PDF ingestion via langchain-community loaders to a local Chroma vector store; searchable through a Node.js web UI using AIEmbeddings tuned for technical docs.
• E-Mail Reflection Agent: LangGraph + OpenAI (GPT-4o mini) to analyze threads and generate coherent, action-oriented replies; graph includes verification checkpoints for clarity and relevance.
• Developer Documentation Agent: Doxygen site scraper → offline Chroma store; LangGraph answers from docs; fallback to Google via Tavily with sanity checks for coherence using GPT-4o mini.
• SAM.gov Procurement Pipelines: Continuous ingest, classify, and alert; vector-store routing across PGVector/Pinecone/Chroma with cost/latency-aware policies.
• Automation: n8n ↔ MCP Servers ↔ Power Automate orchestration; Playwright-based E2E testing; speech I/O for internal agentic assistants.

Selected Projects

• Multiple Protein Sequence Alignment (C#, CUDA, C++): Guide-tree innovation using novel radial distance; repositories: PhdThesis • Align4
• Icarus Softcore (VHDL, VB, Java): Softcore CPU for FPGAs; compiler emits tailored hardware to reduce device utilization.
• Telegram Bots (PHP, MySQL, Web APIs): @TradingAlert_bot (Ichimoku signals), @AdsVideoPlayer_bot (remote playlist control), @ridesmx_bot (rides), @bookServerbot (67k+ titles; tagging/resume-based search).
• GymOnline (PHP, MySQL, Embedded): POS & access control across 5 gyms; Arduino bridges PC↔turnstiles; later WinForms app w/ fingerprint & printing.
• Basketball Scoreboard (VB.NET): Live scoring with dual display — demo: YouTube.
• Computer Vision (OpenCV, YOLO): RealSense-based pedestrian/vehicle detection; object counting on public transport.
• Ticket Vending Machines (TVM): Full stack incl. ChipDNA/Ingenico, QR tickets, coin/bill validators, RFID, printers; plus central control manager (C#).

Publications

• Sequence Alignment by Radial Evaluation of Local Interactions. DOI: 10.2174/1574893613666180130143055. Proposed a novel radial distance metric to generate robust guide trees for MSA; demonstrated statistically superior SP/CS scores vs. MUSCLE/Clustal Omega guide trees on SABRE & PREFAB.
• Modeling the Turning Speed and Car Following Behaviors of Autonomous Vehicles in a Virtual World. Ing. invest. y tecnol. (2015) 16(3):391–405. ISSN 1405-7743. (CARRILLO-GONZALEZ, ARAMBURO-LIZARRAGA, ORTEGA-MAGANA)
• Design of a distributed-control serial bus architecture with dynamical connection among channels ("Zinbus"). Scientific figure & latency analysis: ResearchGate.
• Scientific Computing in Gravitation. Proceedings of the 1st International Supercomputing Conference in México (ISUM 2010), Guadalajara — initial work with CACTUS on UdeG VIRGO cluster.
• Electroencephalographic high-performance cloud data processing system. Proceedings of ISUM 2013, Guadalajara — online cluster processing platform for EEG datasets with significant runtime reductions vs. standalone execution.