AeroLeads people directory · profile
Alexandra Johnson Email & Phone Number
Software Engineer
at
Sierra
1 work email found
@sierra.ai
4 phones found area 562 and 509
LinkedIn matched
✓ Verified August 2026
4 data sources
Profile completeness 100%
Current company
Role
Software Engineer
Location
San Francisco, California, United States
Company size
Who is Alexandra Johnson? Overview
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Quick answer
Alexandra Johnson is listed as Software Engineer at Sierra, a with 299 employees, based in San Francisco, California, United States. AeroLeads shows a work email signal at sierra.ai, phone signal with area code 562, 509, and a matched LinkedIn profile for Alexandra Johnson.
Alexandra Johnson previously worked as Founder and CEO at Rubber Ducky Labs and Member at South Park Commons. Alexandra Johnson holds Bachelor'S Degree, Computer Science from Carnegie Mellon University.
Company email context
Email format at Sierra
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{first}@sierra.ai
89% confidence
AeroLeads found 1 current-domain work email signal for Alexandra Johnson. Compare company email patterns before reaching out.
Profile bio
About Alexandra Johnson
My mission is making it effortless to use the state of the art in machine learning, while cultivating a positive and inclusive company culture.I'm the co-founder and CEO of Rubber Ducky Labs, where we're bringing personalized product recommendations to every company.If you're looking to boost revenue or engagement (or both!) in your consumer product, we'd love to chat!I've been a founding team member of two MLOps startups, Gantry and SigOpt, and prior to that I worked in fashion tech, shipping products for Rent the Runway and Polyvore. Over my time at half a dozen different startups, I've grown to love exploring the psychology of how users choose to adopt (or not adopt) AI / ML tools and platforms.One of my core values is contributing back to your community, and for almost five years I led the 6500+ member Bay Area chapter of Women in Machine Learning and Data Science (WiMLDS). Under my leadership we hosted 150+ events, 30 people volunteered with our chapter, and we launched a mentorship program, a blog, and our #MachineLearningMonday newsletter.
Listed skills include Algorithms, Computer Science, C, Css, and 11 others.
Current workplace
Alexandra Johnson's current company
Company context helps verify the profile and gives searchers a useful next step.
Sierra
11 roles · 16 years
Alexandra Johnson work experience
A career timeline built from the work history available for this profile.
Founder And Ceo
CurrentWe know recommender systems. Get in touch to bring your AI recommender system from 0 to 1 and beyond! YC W23.
Jul 2022 - Present
Member
2022 - 2022
Founding Product Manager
2021 - 2021
Ai Product Manager
2020 - 2021
~1 yr
Platform Lead
2017 - 2019
~2 yrs
Founding Software Engineer
2015 - 2017
~2 yrs
Software Engineer
2014 - 2015
~1 yr
Software Engineering Intern
2013 - 2013
Software Engineering Intern
2012 - 2012
Software Engineering Intern
2011 - 2011
2 education records
Alexandra Johnson education
Bachelor'S Degree, Computer Science
Carnegie Mellon University
Education record
Y Combinator
FAQ
Frequently asked questions about Alexandra Johnson
Quick answers generated from the profile data available on this page.
What company does Alexandra Johnson work for?
Alexandra Johnson works for Sierra.
What is Alexandra Johnson's role at Sierra?
Alexandra Johnson is listed as Software Engineer at Sierra.
What is Alexandra Johnson's email address?
AeroLeads has found 1 work email signal at @sierra.ai for Alexandra Johnson at Sierra.
What is Alexandra Johnson's phone number?
AeroLeads has found 4 phone signal(s) with area code 562, 509 for Alexandra Johnson at Sierra.
Where is Alexandra Johnson based?
Alexandra Johnson is based in San Francisco, California, United States while working with Sierra.
What companies has Alexandra Johnson worked for?
Alexandra Johnson has worked for Sierra, Rubber Ducky Labs, South Park Commons, Gantry, and Citrine Informatics.
How can I contact Alexandra Johnson?
You can use AeroLeads to view verified contact signals for Alexandra Johnson at Sierra, including work email, phone, and LinkedIn data when available.
What schools did Alexandra Johnson attend?
Alexandra Johnson holds Bachelor'S Degree, Computer Science from Carnegie Mellon University.
What skills is Alexandra Johnson known for?
Alexandra Johnson is listed with skills including Algorithms, Computer Science, C, Css, Javascript, Mysql, Python, and Html.
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