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Hi there, I'm Steven Preston, a seasoned QA and hardware/software test engineer with over 20 years of experience spanning embedded devices, payment systems, e-commerce, and enterprise software. I excel in end-to-end test planning, manual and automated testing, root-cause analysis, and cross-functional collaboration to deliver high-quality products on tight deadlines. I thrive on solving complex problems—debugging device drivers, validating security/encryption tests, and building robust test frameworks. When not testing, I enjoy mentoring teammates and sharing knowledge on QA best practices and SDLC methodologies.…Hi there, I'm Steven Preston, a seasoned QA and hardware/software test engineer with over 20 years of experience spanning embedded devices, payment systems, e-commerce, and enterprise software. I excel in end-to-end test planning, manual and automated testing, root-cause analysis, and cross-functional collaboration to deliver high-quality products on tight deadlines. I thrive on solving complex problems—debugging device drivers, validating security/encryption tests, and building robust test frameworks. When not testing, I enjoy mentoring teammates and sharing knowledge on QA best practices and SDLC methodologies.

Steven Preston

QA Engineer, Programmer, Front-End Developer, +3

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Hi there, I'm Steven Preston, a seasoned QA and hardware/software test engineer with over 20 years of experience spanning embedded devices, payment systems, e-commerce, and enterprise software. I excel in end-to-end test planning, manual and automated testing, root-cause analysis, and cross-functional collaboration to deliver high-quality products on tight deadlines. I thrive on solving complex problems—debugging device drivers, validating security/encryption tests, and building robust test frameworks. When not testing, I enjoy mentoring teammates and sharing knowledge on QA best practices and SDLC methodologies.…Hi there, I'm Steven Preston, a seasoned QA and hardware/software test engineer with over 20 years of experience spanning embedded devices, payment systems, e-commerce, and enterprise software. I excel in end-to-end test planning, manual and automated testing, root-cause analysis, and cross-functional collaboration to deliver high-quality products on tight deadlines. I thrive on solving complex problems—debugging device drivers, validating security/encryption tests, and building robust test frameworks. When not testing, I enjoy mentoring teammates and sharing knowledge on QA best practices and SDLC methodologies.

Available to hire

Hi there, I’m Steven Preston, a seasoned QA and hardware/software test engineer with over 20 years of experience spanning embedded devices, payment systems, e-commerce, and enterprise software. I excel in end-to-end test planning, manual and automated testing, root-cause analysis, and cross-functional collaboration to deliver high-quality products on tight deadlines.

I thrive on solving complex problems—debugging device drivers, validating security/encryption tests, and building robust test frameworks. When not testing, I enjoy mentoring teammates and sharing knowledge on QA best practices and SDLC methodologies.

Skills

Experience Level

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Intermediate

Intermediate

Intermediate

Intermediate

Intermediate

Intermediate

Intermediate

Intermediate

Language

English

Fluent

Work Experience

QA Tester / API Tester at Skillable

June 1, 2022 - September 1, 2023

QA testing for an e-commerce frontend; verified 100+ features; API testing (Postman); backend Azure DB testing; configured Azure DevOps test suites and test cases.

QA Tester at Reward Style

June 1, 2021 - January 1, 2022

End-to-end e-commerce testing; backend API testing; Front End UAT and Form testing; navigation testing; HubSpot testing; GitHub/version management; bug tracking; test plan revisions.

Author / Online Certification Course Developer at Independent

March 1, 2020 - June 1, 2021

Authored a book and developed an online certification course; included hardware/software QA insights, encryption considerations, and automated testing/documentation.

Senior QA Tester at TableSafe Inc

October 1, 2015 - March 1, 2020

Led QA for encrypted wireless payment migration from embedded Linux tablet to AWS; data migration between MySQL and a PHP web app; built a control dashboard; tested encryption key injection via JTAG; bug tracking; root-cause analysis; device driver debugging (Ubuntu/CentOS).

Software Tester ST3 / Performance Architect at Microsoft Corporation

July 1, 2013 - August 1, 2013

Test Case verification; Windows features testing (Windows Blue); EU Browser Choice testing; Windows 8 device driver regression testing and root-cause analysis.

Performance Architect at Amazon

May 1, 2013 - June 1, 2013

Test case verification for mobile devices (Kindle); Scrum testing; UAT; bug reporting; data migration tasks; Kindle/Device driver debugging.

R&D / The Parchment Search Project at AIC

January 1, 2007 - June 1, 2013

Developed The Parchment Search Project: a customized suite of document and backup tools; Flash UI with encryption; embedded timing routines; FTP interfacing; remote server setup; extensive automated testing and QA processes.

Assistant at Maxi Mims Academy

May 1, 2007 - November 1, 2007

Maintained LAN, PC repair; root-cause analysis; network QA; supported IT infrastructure for a nonprofit school.

Independent Consultant at Self-employed

May 1, 2006 - May 1, 2007

Developed an application to backup files locally and upload data to the Internet; Flash UI with multi-level security; encryption; FTP; automated testing; test plans and scripts; version control tooling.

Senior Software / Hardware Test Engineer at Coinstar Inc

February 1, 1999 - May 1, 2006

Tested web-based coin-counting application and backend SQL processes; hardware FPGA testing; authored test plans; automated testing; Windows NT 4.0 integration; driver testing; source control and bug tracking.

Project Test Lead at IBM Center for Microsoft Technologies (Kirkland Programming Center)

July 1, 1996 - February 1, 1999

HW/SW test lead for WHQL admission; hardware compatibility testing; staff training; hardware diagnostics; automated testing; test planning; resource management.

QA Tester / E-commerce Front End UI API Tester at Skillable

June 1, 2022 - September 1, 2023

Led QA for an e-commerce front-end with 100+ features; performed API testing (Postman); backend Azure DB testing; configured Azure DevOps test suites and test cases.

Author / Developer at Authored Book (Wisdom Money Certification Course)

March 1, 2020 - June 1, 2021

Authored an online certification course; developed training materials and a secure Flash-based UI; implemented encryption and FTP/data flow integration; created a searchable text-processing website; authored automated test tools and test plans.

R&D Lead / Developer at The Parchment Search Project

January 1, 2007 - June 1, 2013

Led a customized suite of document and backup tools; developed a Flash UI, stand-alone executables, embedded timing routines, FTP interfacing, server-side processing, and automated testing; built a searchable text-processing website.

Independent Consultant

May 1, 2006 - May 1, 2007

Developed an application to backup files locally or upload data to the Internet without a browser; included Flash UI, encryption, FTP, internal email, automated testing, test plans, and version-control using multiple tools.

Project Test Lead at IBM Center for Microsoft Technologies

July 1, 1996 - February 1, 1999

Led hardware/software testing and root-cause analysis for Windows hardware qualification (WHQL); designed test plans and SDLC-compliant procedures; trained staff; managed resources; ensured hardware compatibility certification.