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Jan David Luistro

@jandavidluistro

I lead risk-based testing and release quality for complex enterprise platforms.

At Shift4, I directed technical validation and release quality gates across flagship platforms and cloud deployment pipelines, validating end-to-end integrations, API data contracts, hardware interoperability, and data persistence.

I've spent more than 14 years testing enterprise systems across Shift4 and LRS. My work includes complex MS SQL and PostgreSQL validation, Postman API collections with JavaScript assertions, distributed log diagnostics, Apache JMeter benchmarking, and Section 508 workflow validation.

I also led testing for a family calendar Progressive Web App, building a Playwright E2E framework for multi-user scheduling and AI-generated workflows. I use AI tools including Gemini, Grok, Claude, and Jira Rovo to model failure modes, expand boundary coverage, and strengthen release gates.

Experience

Work history, roles, and key accomplishments

Quality Assurance Engineering Manager

Shift4

Apr 2026 - Aug 2026 (4 months)

Directed hands-on technical validation and release quality gates across flagship platforms and cloud deployment pipelines. Formulated comprehensive end-to-end testing strategies and integration matrices, validating software and hardware service interoperability, API data contracts, and data persistence.

Test Strategy End To End Testing API Testing SQL AI Prompting Excel Defect Tracking Release Management

QA Engineer III / Team Lead

Shift4

Sep 2018 - Apr 2026 (7 years 7 months)

Directed technical testing across multi-tier enterprise platforms, ensuring end-to-end data integrity from event trigger through backend processing and operator interfaces. Validated hardware-software integration across terminal devices, ensuring secure communication protocols, chip/PIN, and contactless transaction workflows.

MSSQL PostgreSQL Postman JMeter Jira Confluence Section 508 API Testing Root Cause Analysis Agile

Technical Support & Escalations Specialist

Shift4 Corporation

Aug 2016 - Sep 2018 (2 years 1 month)

Provided tier-2 technical escalation support, root-cause investigation, and environment verification for enterprise platforms and hardware integrations. Parsed and analyzed raw system transaction logs to isolate technical anomalies, authoring detailed reproduction steps and defect reports in Jira.

Technical Support Root Cause Analysis Log Analysis Jira Defect Reporting

Software Systems Test Engineer

Levi, Ray & Shoup, Inc. (LRS)

May 2012 - Jul 2016 (4 years 2 months)

Engineered, documented, and executed functional, regression, integration, and operational test procedures for enterprise software solutions in multi-tier client/server environments. Verified database states, data flow configurations, and device communication protocols, coordinating corrective technical actions with developers prior to client rollout.

Functional Testing Regression Testing Integration Testing Database Verification Client Server Architecture