AeroLeads people directory · profile
Stephen Donner Email & Phone Number
Senior QA Engineer
at
Stealth Startup
2 work emails found
@mozilla.com
4 phones found area 650
LinkedIn matched
✓ Verified May 2026
4 data sources
Profile completeness 100%
Current company
Role
Senior QA Engineer
Location
San Mateo, California, United States
Who is Stephen Donner? Overview
A concise factual answer block for searchers comparing this professional profile.
Quick answer
Stephen Donner is listed as Senior QA Engineer at Stealth Startup, based in San Mateo, California, United States. AeroLeads shows a work email signal at mozilla.com, phone signal with area code 650, and a matched LinkedIn profile for Stephen Donner.
Stephen Donner previously worked as Senior Quality Assurance Engineer at Brave Software and Senior Software Engineer in Test, Firefox Performance Test Engineering at Mozilla. Stephen Donner holds Ba, English from Indiana University South Bend.
Company email context
Email format at Stealth Startup
This section adds company-level context without repeating Stephen Donner's masked contact details.
{first_initial}{last}@mozilla.com
89% confidence
AeroLeads found 2 current-domain work email signals for Stephen Donner. Compare company email patterns before reaching out.
Profile bio
About Stephen Donner
More than 10 years professionally testing a full stack of software on the Web, all the way from desktop and mobile clients to server-side optimizations, and issues, and much in-between.Software testing professional with deep experience in manual testing and testing tools. Passionate about user experience/interfaces, performance, accessibility, and community aspects. Detail-oriented and impact-driven; critical eye without being critical. True team player, collaborator, and strong individual contributor.Recruiters and headhunters, do *please note*:I'm not a Software Developer in Test (SDET), as I understand that role to be, first and foremost, an object-oriented programming role, with "testability" and "testing" in mind, expressed through frameworks and code.I have and will work well alongside an SDET, and can and will contribute automated tests, where needed, but my forte is *strong*, intuitive manual testing in all its forms, expressions, and product cycles.
Listed skills include Software Quality Assurance, Bugzilla, Open Source, Linux, and 12 others.
Current workplace
Stephen Donner's current company
Company context helps verify the profile and gives searchers a useful next step.
9 roles
Stephen Donner work experience
A career timeline built from the work history available for this profile.
Senior Quality Assurance Engineer
(Laid off in a reduction-in-force move, August 2024.)At Brave, I led testing for and shipped our initial Premium-branded offering, Brave Talk Premium, which required first testing and shipping its supporting Brave Account website. The Account website allows users to purchase, cancel, and renew each of Brave’s Premium offerings:* Brave Leo AI* Brave Talk.
Jan 2021 - Aug 2024
Senior Software Engineer In Test, Firefox Performance Test Engineering
Wrote idle and idle app-backgrounded power-use tests for Firefox on Android, enabling us to base-line in CI, and help identify power-hungry changesets (Python, ADB)Integrated conditioned profiles into Raptor and Browsertime for Firefox on desktop and Android, cutting test-execution times down by 12.5 minutes, per suite, on average (Python, ADB.
Dec 2018 - Jan 2020
Senior Test Engineer, Cloud Services + Infra
Standardized our team’s automated test suites for GitHub-repo guidelines, code linting, Travis CI, automatic dependency updates, and Jenkins Pipeline workflows.Brought development and test-engineering test suites together by co-creating Mozilla’s shared libraries for our Jenkins Pipelines - https://github.com/mozilla/fxtest-jenkins-pipeline. This unified.
Dec 2015 - Dec 2018
Web Qa Manager
I lead and managed a team of five Web QA engineers and eight contractors, plus all of our projects.Highly involved in the Selenium testing community; hosted and presented at several meetups. Partnered with Sauce Labs to super-power our testing infrastructure.
Mar 2011 - Dec 2015
Web Qa Lead For Mozilla
Web QA Testing Lead:Provided direction and oversaw all Web QA team efforts, in addition to project and resource-managing in an ever-changing environment.Client Testing:Responsible for test coverage of Download Manager and Location Bar components in Firefox 3; wrote over 200 testcases in totality, covering both.Ensured high quality with rapid turnaround for.
Jul 2007 - Mar 2011
Search Quality Rater
Carefully using Google's proprietary page-ranking system, ranked wide varieties of pages for quality based on their many attributes. Involved cross-referencing six separate documents as well as continually incoming communications to determine specific page quality.
May 2006 - Sep 2006
Software Qa Engineer
Created and maintained a 70+page testcase for various critical features of our AOL by Voice product. Tested upgrades to Voice Services via menu-driven phone interface using DTMF and speech recognition. Troubleshooted voice recognition/transition failures using debug server logs.Regression-tested Alerts & Reminders functionality.
Dec 2003 - Apr 2004
Software Qa Engineer
AOL PersonalizationWrote and executed functional testcases for 8 modules, stress-tested Virtual Lock (an internal-authentication API), LDAP migration and purging scripts/binaries on Solaris. Developed and maintained testcase template for entire QA team, as well as compiled the basic functionality testcase. Helped design team standarize UI.
Nov 2000 - Jul 2003
2 education records
Stephen Donner education
Ba, English
Indiana University South Bend
Education record
Concord High School (I'M Class Of '96)
FAQ
Frequently asked questions about Stephen Donner
Quick answers generated from the profile data available on this page.
What company does Stephen Donner work for?
Stephen Donner works for Stealth Startup.
What is Stephen Donner's role at Stealth Startup?
Stephen Donner is listed as Senior QA Engineer at Stealth Startup.
What is Stephen Donner's email address?
AeroLeads has found 2 work email signals at @mozilla.com for Stephen Donner at Stealth Startup.
What is Stephen Donner's phone number?
AeroLeads has found 4 phone signal(s) with area code 650 for Stephen Donner at Stealth Startup.
Where is Stephen Donner based?
Stephen Donner is based in San Mateo, California, United States while working with Stealth Startup.
What companies has Stephen Donner worked for?
Stephen Donner has worked for Stealth Startup, Brave Software, Mozilla, Google, and Aol.
How can I contact Stephen Donner?
You can use AeroLeads to view verified contact signals for Stephen Donner at Stealth Startup, including work email, phone, and LinkedIn data when available.
What schools did Stephen Donner attend?
Stephen Donner holds Ba, English from Indiana University South Bend.
What skills is Stephen Donner known for?
Stephen Donner is listed with skills including Software Quality Assurance, Bugzilla, Open Source, Linux, Testing, Test Planning, Quality Assurance, and Software Development.
Find 750M verified contacts
Search by job title, company, industry, location, and seniority. Export verified B2B contact data when you need it.
Start free trial