Open to product & engineering work

Matthew Ketter

Product manager and software engineer with 30 years spent building and improving web platforms, payments, KYC, and product operations. These days, I am working mostly on AI tools and open-source projects.

Featured work

A selection of product and engineering work where the main task was usually the same: understand the problem clearly, make careful tradeoffs, and build something useful enough to survive real use.

AI product engineer

Compliance tool

I built an open-source Python CLI that uses LLMs to review marketing materials for potential SEC Marketing Rule issues. The goal was not to replace human judgment, but to make compliance review more careful, traceable, and easier to inspect.

AI product engineer

Newsletter ghostwriter

I built a system that used AI to draft newsletters for financial advisors, with citations, source excerpts, compliance notes, and reasoning checks. I wanted reviewers to see not only the finished draft, but the evidence and assumptions behind it.

AI product engineer

Content engine

I built an AI content platform and WordPress plugin for generating draft posts from defined topics, audiences, and writing constraints. The important part was keeping the workflow reviewable, so generated content could be treated as a draft to inspect rather than a finished authority.

Product manager · senior engineer

MarTech stack

For several years, I worked on the marketing systems behind email, CRM, content, analytics, and customer engagement. A lot of the work was practical: find what slowed the team down, understand the technical and organizational constraints, and improve the parts that made campaigns harder than they needed to be.

Product manager · senior engineer · tech lead

WordPress & Drupal

Created and maintained websites and content platforms in WordPress and Drupal, including custom themes, plugins, third-party integrations, and ongoing optimization. The work supported content and marketing teams while keeping performance, security, and maintainability in view.

Product manager · senior engineer

Account registration & KYC

I worked on account registration and KYC flows where the tradeoffs mattered: compliance, speed, mobile usability, fraud risk, and conversion all had to be held together. The work was to reduce friction without pretending the hard requirements did not exist.

Product manager · senior engineer

Deposits & payments

I helped modernize funding options and payment operations tools, working with compliance, customer service, and legal to understand the requirements before shaping the product work. Payments work rewards clarity, because small mistakes can create real operational and customer problems.

Product manager

iOS & Android apps

Product management for mobile apps across planning, prioritization, delivery, and post-launch improvement. I defined requirements, wrote user stories, managed the backlog, coordinated with design and engineering, and used feedback and performance data to decide what needed attention after release.

Web developer · co-founder

E-commerce platforms

Early e-commerce and web product work covering storefronts, custom development, search, hosting, and affiliate systems. I built and maintained e-commerce sites with custom carts, payment integrations, inventory tools, product search, hosting operations, and affiliate marketing systems.

Open-Source Projects

python · LLM · CLI

Compliance Flag helps review marketing materials for potential SEC Marketing Rule risk.

It is an open-source Python CLI that uses LLMs to produce structured, reviewable reports. The point is to make risk easier to examine, not to pretend software can make the final judgment.

Experience

Work history

  1. 2020 - now Product Engineer - Quillmark, LLC AI tools · CLI apps · content systems
  2. 2013 - 2020 Product Manager - Churchill Downs Inc. MarTech · payments · KYC · mobile
  3. 2006 - 2013 Senior Software Engineer - TwinSpires.com Full-stack dev · tech lead
  4. 1997 - 2006 Co-Founder & CTO - TeamZone, JumpForce, ChaseWeb E-commerce · search · hosting & dev
  5. 1995 - 1996 Software Developer - Van American Insurance Company, Inc. Lotus Notes · Visual Basic · IT support

Stack & tools

Tools I have used

Languages
  • Python
  • JavaScript
  • PHP
  • SQL
  • HTML
  • CSS
  • TypeScript
  • Bash/Shell scripting
  • Java
  • Perl
  • Visual Basic 3.0
  • VBA
  • QBasic
  • LotusScript
AI & LLMs
  • Anthropic API
  • OpenAI API
  • Prompt engineering
  • Agents
  • Ollama
  • MCP servers
  • CLI tooling
  • Claude Code
  • Claude Cowork
  • OpenAI Codex
  • Github Copilot
Product & Agile
  • Scrum
  • SAFe
  • Kanban
  • Jira
  • Rally
  • Confluence
  • OKRs
  • MVP design
  • PRDs
  • Roadmapping
  • Backlog management
  • Defect Triage
Cloud & infrastructure
  • AWS
  • EC2
  • Lambda
  • S3
  • API Gateway
  • DynamoDB
  • SNS
  • SQS
  • Google Cloud
  • Cloud Functions
  • Compute Engine
  • Firebase
  • Linux
  • Apache
  • Nginx
Databases & analytics
  • MySQL
  • PostgreSQL
  • Microsoft SQL
  • SQLite
  • AWS Aurora
  • Google BigQuery · Firestore
  • Google Analytics
  • Google Tag Manager
  • MicroStrategy
  • Visual Website Optimizer
  • Emarsys
  • Localytics
  • A/B testing
CMS, VCS, tools
  • Visual Studio Code
  • Docker
  • Mac OS X
  • Windows
  • Zapier
  • Drupal
  • WordPress
  • Chrome dev tools
  • Full-stack development
  • Github
  • GitHub Actions
  • CI/CD pipelines