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Cesar Alvarez
Senior Full-Stack · AI Code Audit Specialist

Turn your AI-generated code into production-grade software

I find what's broken, what's risky, and what will fail under load, then fix it by hand with tested, maintainable code. Backed by 30+ years in regulated, high-stakes environments.

View servicesMy experience
30+
years in production
Why it matters

AI-built code can pass every test and still fall over at 10x load.

AI-built code usually works for the demo. The problems show up when real users arrive.

Traffic →Response time →Demo10xUnauditedAfter cleanup

Illustrative

Duplicated logic
The same rule written five ways, each slightly wrong.
Missing error handling
Happy path only. The first timeout takes everything down.
Security gaps
Exposed secrets, unchecked input, client-trusted auth.
Architecture not built for scale
Sync where it should be async, with no seams for growth.
Services

Audits, fixes, design systems, and full-stack builds

Whether you need a second opinion on an AI-built codebase or a senior engineer to build alongside your team.

Vibe-Code Audits

Static analysis combined with AI-assisted review. You get a written report: what's broken, what's risky, and what to prioritize. Backed by ongoing code reviews for an offshore development team.

Cleanup & Remediation

Fixes for security, performance, dead code, and test coverage, written by hand in JetBrains tooling instead of re-prompted.

Design Systems

Component libraries, design tokens, and the documentation pipeline that keeps them from rotting. Built from zero or audited for drift. I currently lead development on one, including its move to agentic development, and have spent four years turning a designer's Figma files into production pages.

Full-Stack Development

Senior engineering across C#/.NET, Java (Spring, Hibernate, Struts), Node, Angular, React, and Vue, deployed on AWS, Linux, and Windows servers. I've also built many small-business websites with jQuery, Bootstrap, Angular Material, and Tailwind CSS, and complete e-commerce stores on X-Cart.

NEW

Agentic Development for Design Systems

I lead agentic development on a design system today. I can help your team set up the same, so your AI agents build with your design system's components and rules.

Components and tokens documented so agents can follow them
Clear rules for how and when to use each component
A review workflow that keeps agent-built UI on-system
Experience

I read architecture the way AI doesn't.

AI can make the tests pass. It rarely asks whether the design will hold at 10x load. I bring OOA/OOD, GoF design patterns, and decades of judgment about when synchronous processing is the right call and when it isn't.

I've spent 30+ years building software for banking, insurance, retirement plans, healthcare, and e-commerce, where "production-ready" has a real cost. I've run it on AWS, Linux, and Windows servers. Today I'm the lead developer on a design system, leading its move to agentic development. I also build production pages from a designer's Figma files and handle code reviews for an offshore development team in Vietnam. I've been paged for what breaks at scale, so I know what to look for before it does.

15 yrs

The "small one-off" commissions app I built at Aon was rolled out to every client in the program and ran in production for 15 years.

1 in 10M

The ANTLR validator I wrote at Lincoln Financial Group caught a single bad row in a 10+ million row AS/400 export and exposed an obscure bug.

C# / .NET
Java
Spring
Hibernate
Struts
Node.js
Angular
React
Vue
Tailwind CSS
Bootstrap
Angular Material
jQuery
AWS
Linux
Windows
X-Cart
Figma
Agentic AI
Google Maps API
ANTLR
IntelliJ IDEA
Rider
WebStorm

  • Design system lead & code review

    Current
    Lead developer · Design system, leading the move to agentic development
    4 years · Production pages built from a designer's Figma files
    Code reviews · Offshore development team in Vietnam

  • Sysmex

    Healthcare
    HIPAA-compliant healthcare software

  • Allstate

    Insurance
    Roadside Services · Led API documentation for integrating third-party software with the towing dispatch system
    Proposed an improvement to the integration flow that corporate adopted
    Worked with Google to license the Google Maps API for an Angular app that let independent towing companies receive dispatches electronically

  • X-Cart store build

    E-commerce
    Server setup and the full store built from scratch
    Custom skin/theme coded from a designer's PSDs

  • Small-business websites

    Web
    Many sites for small companies built with jQuery, Bootstrap, Angular Material, and Tailwind CSS
    React, Vue, and Angular apps

  • Lincoln Financial Group

    Financial
    403(b) data sharing · Wrote a custom domain-specific language in ANTLR to validate exported files. It processed millions of rows in seconds
    Caught a single bad row in a 10+ million row AS/400 export, which exposed an obscure bug

  • JPMorgan Chase

    Banking
    Investment Banking · Basel compliance
    Treasury & Security Services · State and federal programs

  • Aon

    Warranty
    Led the move from a custom in-house library to Struts
    Built an extended-warranty commissions app for retail sales staff at national retailers. Scoped as a one-off, it was eventually deployed to all of Aon's extended-warranty clients and ran in production for 15 years

Engagement

$200/hour

One hourly rate for audits, fixes, and builds.

Written audit reports
Hands-on remediation
Design system builds & reviews
Full-stack feature development
Small-business websites
Hosting & deployment fixes (AWS, Linux, Windows)
Ongoing code reviews for your team
Agentic development setup for design systems

Code review retainers

Starter
10 hours / month
$1,800/mo
Team
20 hours / month
$3,400/mo

Reviews within one business day · Unused hours roll over one month · Monthly summary of recurring issues

Common questions