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Isaac Tillema

Senior Engineer, Architect, and Founder

I architect test automation and CI/CD solutions that let teams ship faster without breaking trust.

About

Hey there! I'm Isaac, a Senior Quality Engineer and Architect based in Chicago, IL. I've spent the last six years in engineering and consulting leadership, architecting scalable test automation, optimizing CI/CD pipelines, and elevating brand equity by leading agile teams to consistently ship software people can trust.

Today I lead the QA practice at The Office of Experience, where my team and I architect automation for ecommerce and lead-gen engagements, build custom CI/CD deployment and reporting pipelines, and engineer an internal AI Testing framework that supports AI-native products and tools. I'm especially interested in defining QA-as-a-Service offerings that turn quality into a revenue lever rather than a cost center.

You can read the long version on my résumé.

In my personal time, you'll find me brewing and consuming an inordinate amount of espresso, cycling around the midwest, or spending quality time with my family.

Experience

  1. August 2024 — Present
    The Office of Experience
    Quality Assurance Engineer Lead, Consultant
    • Manage and lead a team of QA Analysts and Engineers, both internally and augmented on various client projects.
    • Architect, develop, and maintain test automation solutions for ecommerce and lead-based projects, driving ~90% reductions in overall project testing cycle costs and timelines versus manual, and 120% increases in testing throughput.
    • Develop custom CI/CD deployment and reporting pipelines for test automation solutions, yielding over 120% average increases of testing throughput and scalability on client projects, and 36% decreases in defect leakage.
    • Engineer adaptive initiatives for my team and department, resulting in the development of a comprehensive internal AI Testing framework to accompany internal AI-native tools and AI-native client projects.
    • Lead organizational OKRs to define and implement QA-as-a-Service targeting both current and new client projects, resulting in five new clients and add-on projects in 2025, and increases in both company annual revenue and income.
    • Playwright
    • TypeScript
    • C#
    • .NET
    • Azure DevOps
    • Docker
    • AI Testing
  2. May 2022 — August 2024
    Eimagine Technology Group
    Senior Software Quality Assurance Engineer, Consultant
    • Led QA Management efforts for three parallel agile teams on government entity CRM-based projects.
    • Developed and maintained custom test automation solutions for enterprise clients, resulting in 82% reductions in mean testing time and over 40% manual testing cost reductions per testing cycle.
    • Designed, managed, and executed test plans, suites, and cases for over 12 mobile and web app projects.
    • Led organizational initiative to define, develop, and build a QA Engineering team, resulting in a team of 10 QA Analysts and 6 QA Engineers when I exited the company.
    • Led organizational initiative to define and implement QA-as-a-Service for current and prospective client projects.
    • Performed requirements gathering, affinity diagramming, user story creation, and training for high-level clients.
    • C#
    • .NET
    • Playwright
    • Selenium
    • Azure DevOps
    • Jenkins
    • NUnit
  3. August 2020 — May 2022
    RICS Software
    Quality Assurance Engineer
    • Wrote, managed, and executed test suites and cases for a newly developed Point of Sale (POS) system.
    • Wrote and deployed test automation scripts to test cross-platform mobile applications.
    • Actively communicated qualitative and quantitative test results to an agile development team and VP of Product.
    • Triaged and managed defects throughout development and iterative testing, through UAT and shipment.
    • Identified procedures and scenarios for the quality control of new and existing products, as well as deployments.
    • Appium
    • Flutter
    • .NET
    • JIRA
    • SQL
    • Mobile QA

Education

  • 2026
    DePaul University
    Master of Science in Software Engineering
    Development & Architecture
    Chicago, IL
  • 2020
    Indiana University
    Bachelor of Science in Business
    Management
    Indianapolis, IN
  • Certifications
    • ISTQB Certified Test Manager (CTA-TM)
    • ISTQB Certified Test Automation Engineer (TAE)
    • ISTQB Agile Tester (CTFL-AT)
    • ISTQB Certified Tester (CTFL)
    • Developing Azure Solutions (AZ-204)
    • Software Development (MTA) (MS 98-361)

Projects

Some work of mine.

  • QA-as-a-Service Offering

    Defined and launched a productized QA service line: scoped retainers, repeatable onboarding, and a reporting stack that turns automation coverage into a metric clients buy on. Five new client engagements in the first year.

    • Playwright
    • TypeScript
    • Azure DevOps
    • Docker
    • Power BI

  • isaactillema.com

    This site. Next.js + Tailwind v4.

    SourceLive
    • Next.js
    • React
    • Tailwind CSS
    • TypeScript
View all projects

Version Control

A commit log of what I'm learning, building, and breaking - And anything else on my mind.

  • The Geography of Generosity

    The Geography of Generosity

    A regression analysis of neighborhood socioeconomics and taxi tipping behavior in Chicago.

    • data-science
    • regression
    • chicago
    • research
View all commits

Contact

Get in touch

Open to consulting engagements, technical leadership conversations, and connections with engineers who care about quality. Drop a note and I'll get back to you.