Contributions — Tools, Writing & Talks

/ 019 projects

Software
contributions.

Published projects, with their documentation, examples and source code. From my current work on AI collaboration and pipeline reliability to tools built for database and frontend engineering.

01 /

Proof of concept · MIT · 2026

DAG-Healer

An orders API changes, the import fails, and a separate Airflow workflow diagnoses the incident with Claude Code and checks a proposed repair. Follow the recorded recovery and see where the checks can fail.

Apache AirflowAI diagnosisPython

Explore the proof of concept Step-by-step demo

DAG-Healer’s reliability workflow in Airflow, from waiting for an incident to rerunning the import. — The independent reliability DAG diagnoses incidents, verifies proposed repairs and triggers the import after an accepted correction.

02 /

Experimental lab · 2026

Slow Thinker

How do AI agents on different LLMs influence each other, and when does another round stop paying off? Follow their contributions, inspect the results, and see what each experiment teaches me about the process.

Multi-agentEvaluation

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Agent contributions across rounds in a Slow Thinker report.

03 /

GitHub · MIT · T-SQL

czSQLServerGit

Every CREATE, ALTER and DROP becomes a Git commit authored by the login that made it — detected inside SQL Server by a DDL trigger and queued through Service Broker, so developers never wait and nothing depends on their discipline. A small utility database, standard SQL Server features and Git: nothing you won't understand. Open source under MIT.

SQL Server Git Open source

View on GitHub

Schema history and a stored-procedure diff, viewed in Fork.

04 /

Free tool

czAsyncSQLServer

Fork/join for T-SQL: launch statements in parallel and run the next step only when every one has finished, including the work they fork into the same group. Each outcome is timed and logged for that step to check. Pure T-SQL on Service Broker, no CLR or COM. Open source under MIT.

SQL Server T-SQL Async

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The asynchronous workflow explained in the project documentation.

05 /

Tool

sqlDataTrans

Integration controller and supervisor that keeps SQL Server data replicas in sync — bulk, continuous (AWS DMS) and incremental checksum modes, built for data-warehouse feeds.

SQL Server AWS DMS Replication

Explore the project

06 /

Free tool

czJsDocShowcase

Sencha application that renders JSDoc and Markdown documentation with live examples and developer guides — it powers the documentation of my other tools.

Sencha Docs tooling

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07 /

Free plugin

czResponsiveGrid

A plugin for Ext JS Modern grids that moves the columns that don't fit into each row, below its cells, as aligned label and value lines, instead of hiding them. You declare candidate layouts; on every resize it works out in real pixels which one fits best and applies it.

Ext JS Grids

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08 /

Free plugin

Grid Stateful Plugin

True stateful behavior for Ext JS 7 Modern grids — column order, visibility and width survive across sessions. With live fiddles to try and download.

Ext JS State

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09 /

Free override

Number field internationalization

Override adding international thousand-separator display to Ext JS number fields.

Ext JS i18n

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/ 024 appearances

Standing in front
of the room.

Conference talks, keynotes and working demos. Technical conversations with the people who build systems and the people who decide to invest in them.

001

Speaker — Snowflake Summit 2025, San Francisco Public speaker at Snowflake's flagship conference in 2025, representing Celestial Systems as its Principal Data & AI Architect.

Snowflake Summit

Data platforms Evangelism

002

Keynote — Data & AI corporate event Opening keynote designed to bridge the gap between AI practitioners and the broader business community.

Celestial Systems

Keynote Enterprise AI

003

AI ML + GenAI In Action Working demonstration of machine learning and generative AI patterns on Dataiku, built to show business value — not slides.

Dataiku demo

Dataiku GenAI

004

Host & technical anchor — client events and online sessions Recurring role in late-stage enterprise conversations: the senior technical voice clients meet before they commit.

Enterprise pipeline

Pre-sales Trust anchor

→

/ 037 articles & essays

Published
articles.

Writing on enterprise AI, software architecture and the decisions behind delivery. Strategic analysis alongside engineering positions I have put into practice.

013

The AI Platform is the Strategy A strategy document for medium and large organizations facing the agent wave: platform versus protocol, governance, architecture, and where the value actually accrues. Full document available for download.

cesarzea.com · July 2025

Enterprise AI Agents Strategy

014

A Strategic Analysis of the U.S.–EU AI Policy Divergence What America's AI Action Plan means for organizations regulated under the EU AI Act — and how to plan around the divergence instead of being caught by it.

cesarzea.com · July 2025

AI policy EU AI Act

015

About “The Illusion of Thinking” Apple's reasoning-models paper, translated for a non-academic audience: what it actually claims, what it doesn't, and what it means for systems in production.

LLMs Research commentary

016