I’m Kevin Nguyen, an AI/Automation Engineer who builds and runs production agentic systems end to end—multi-agent orchestration, LLM integrations with fail-closed guardrails, RAG, and production ML pipelines. I focus on correctness in money-critical, real-world environments: leakage-aware validation, risk checks, and deterministic veto gates when something doesn’t pass. I also ship revenue-generating products, including a live AI-enabled subscription app that takes Stripe payments, as well as a long-running autonomous algorithmic trading system operating without human input. My background in accounting and finance (AP/AR, reconciliations, ERP) keeps me grounded in the kind of math and operational reliability that production systems demand.

Kevin Nguyen

I’m Kevin Nguyen, an AI/Automation Engineer who builds and runs production agentic systems end to end—multi-agent orchestration, LLM integrations with fail-closed guardrails, RAG, and production ML pipelines. I focus on correctness in money-critical, real-world environments: leakage-aware validation, risk checks, and deterministic veto gates when something doesn’t pass. I also ship revenue-generating products, including a live AI-enabled subscription app that takes Stripe payments, as well as a long-running autonomous algorithmic trading system operating without human input. My background in accounting and finance (AP/AR, reconciliations, ERP) keeps me grounded in the kind of math and operational reliability that production systems demand.

Available to hire

I’m Kevin Nguyen, an AI/Automation Engineer who builds and runs production agentic systems end to end—multi-agent orchestration, LLM integrations with fail-closed guardrails, RAG, and production ML pipelines. I focus on correctness in money-critical, real-world environments: leakage-aware validation, risk checks, and deterministic veto gates when something doesn’t pass.

I also ship revenue-generating products, including a live AI-enabled subscription app that takes Stripe payments, as well as a long-running autonomous algorithmic trading system operating without human input. My background in accounting and finance (AP/AR, reconciliations, ERP) keeps me grounded in the kind of math and operational reliability that production systems demand.

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Work Experience

Independent AI Engineer at Self-Employed
November 1, 2024 - Present
Designed, built, and operated production agentic AI systems and revenue-generating products, covering architecture, ML lifecycle, payments engineering, and deployment. Built an autonomous algorithmic trading system that runs unattended for over six months, using a multi-stage multi-agent pipeline with tool use, retrieval-augmented context, multi-model/LLM consensus, an XGBoost ensemble with engineered features and automated retraining/rollback, plus a fail-closed LLM review gate and risk/safety layers. Also founded Wynkie, a live AI-enabled SaaS taking real Stripe payments (App Store and web), including Gemini Vision menu-to-catalog extraction and AI message parsing with rate limits and structured JSON guards, alongside exactly-once-like webhook correctness practices. Architected persistent memory (layered RAG with hybrid retrieval and self-healing backups) and built an AI ad automation system via a custom Google Ads MCP server.
Accountant at Los Angeles County Sanitation Districts
September 1, 2018 - February 1, 2024
Owned high-volume accounts payable in Oracle EBS, handled cash receipts and deposits, wire and manual payments, and intercompany transactions. Performed complex general-ledger reconciliations and produced monthly and quarterly bank reconciliations for a large public agency.
Staff Accountant (contract) at Robert Half
February 1, 2018 - April 1, 2018
Performed balance-sheet analysis, journal entries, fixed-asset work, and general ledger reconciliations to support corporate reporting.
Staff Accountant at CSL Builders
October 1, 2015 - October 1, 2017
Owned the general ledger and monthly close, including journal entries, accruals, and financial statements and cash flow preparation.
Owner & General Manager at Bay Nails Inc.
January 1, 2005 - July 1, 2015
Founded and ran a service business for ten years, managing staff and the P&L and growing to six-figure annual sales.
Senior Accountant at London Financial Group
January 1, 2000 - October 1, 2004
Provided senior accounting support for corporate financial needs (details not specified in resume).
Senior Staff Accountant at Mead, Allsup & Lim CPAs
January 1, 2000 - October 1, 2004
Worked in public accounting on audits, reviews, and corporate tax engagements.

Education

B.A. in Business Administration (concentration in Accounting) at California State University, Fullerton
January 11, 2030 - August 28, 2026

Qualifications

Add your qualifications or awards here.

Industry Experience

Software & Internet, Financial Services, Government, Professional Services, Media & Entertainment, Computers & Electronics