AeroLeads people directory · profile

Charles Simms Email & Phone Number

Senior Software Engineer at Handshake
Location: Emeryville, California, United States 12 work roles 3 schools
2 work emails found @rei.com 4 phones found area 925, 727, and 888 LinkedIn matched
✓ Verified May 2026 4 data sources Profile completeness 100%

Contact Signals · 2 work emails · 4 phones

Work email c****@rei.com
Direct phone (925) ***-****
LinkedIn Profile matched
3 free lookups remaining · No credit card
Current company
Role
Senior Software Engineer
Location
Emeryville, California, United States
Company size

Who is Charles Simms? Overview

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Quick answer

Charles Simms is listed as Senior Software Engineer at Handshake, a company with 1219 employees, based in Emeryville, California, United States. AeroLeads shows a work email signal at rei.com, phone signal with area code 925, 727, 888, and a matched LinkedIn profile for Charles Simms.

Charles Simms previously worked as Senior Software Engineer at Vital and Senior Software Engineer, Web at Marqeta, Inc. Charles Simms holds In Bachelor Of Arts, Mathematics from Sonoma State University.

Company email context

Email format at Handshake

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{first_initial}{last}@rei.com
89% confidence

AeroLeads found 2 current-domain work email signals for Charles Simms. Compare company email patterns before reaching out.

Profile bio

About Charles Simms

Hello! I'm a Software Engineer born and raised in the East Bay Area. I've worked in a few different industries in my life, from Mathematics to Bicycle Maintenance. Throughout those jobs I've been the most excited about learning and teaching complex systems, which is why I've been so excited to work in software the last several years.I'm a strong communicator, honest leader, and positive problem solver. If you'd like to connect or chat about anything, feel free to reach out!

Listed skills include Ruby, Ruby On Rails, Jquery, Javascript, and 30 others.

Current workplace

Charles Simms's current company

Company context helps verify the profile and gives searchers a useful next step.

Handshake
Handshake
Senior Software Engineer
Emeryville, CA, US
Employees
1219
AeroLeads page
12 roles

Charles Simms work experience

A career timeline built from the work history available for this profile.

Senior Software Engineer

Emeryville, CA, US

Senior Software Engineer

Claymont, Delaware, US

- Scope and implement the integration engine responsible for connecting to Hospital’s FHIR APIs. This includes: - Integration infrastructure using AWS Lambda, SQS, and DynamoDB via SST - Application code using Typescript and tests using Vitest (aka Jest) - Taking the system from zero to sending ~30k API requests/hr and ~40k SQS messages/hr at peak.

Apr 2023 - Oct 2024

Senior Software Engineer, Web

Oakland, California, US

- Lead small team focusing on web app Infrastructure and Platform improvements- Design, build and maintain features for the customer dashboard web app using React and GraphQL- Collaborate on the development environment and deployment pipelines of the customer dashboard- Interview IC candidates of all levels, and write interview questions for Front End.

Jan 2020 - Mar 2022

Software Engineer

Oakland, California, US

- Build new features for the customer dashboard, including internationalization efforts and multi currency support- Integrate internal and external services to the web application, including in-house SSO and AWS- Maintain the dashboard with bug fixes and time-sensitive patches, working with QE and using Jenkins to deploy and test changes- Contribute to the.

Jul 2018 - Jan 2020

Quality Engineer

Oakland, California, US

Prototyped and built out QE environments and integrations: - used various technologies including Ruby, Rspec, Scala, Jenkins, Docker, and various Amazon Web Services- collaborated closely with DevOps and Application Developers to build accurate testing environments hosted locally and remotely Contributed to and maintained the primary API Test Suite: - main.

Sep 2016 - Jul 2018

Teaching Assistant

San Francisco, California, US

- Provided One-on-One tutoring and small group instruction on class materials, covering any questions or problems as they come up- Collaborated with teammates to produce teaching material- Clearly communicated and taught Ruby syntax and methodology

Jul 2016 - Aug 2016

Private Math And English Instructor

Private Tutor

Create supplemental curriculum tailored to student's needs.Develop a positive relationship with the student, encouraing a safe space to learn.Subjects taught include: - Calculus I & II - Algebra - Geometry - Trigonometry - Cambridge English: First & Advanced Test Prep

Jun 2006 - May 2016

Bicycle Technician, Bike Maintenance Instructor

Rei

Seattle, US

- Used teamwork and critical analysis to solve problems under tight time constraints - Efficiently assembled and repaired bicycles to strict quality standards- Dynamically transitioned from entry-level Assembler to Advanced -Technician in under a year- Remained flexible in team roles to meet the needs of California’s busiest REI bike shop- Gave engaging.

May 2012 - Aug 2015

Cashier / Clinic Assistant / Manager

Eagle, Idaho, US

- Rose from Clinic Assistant to Clinic Manager in under a year and a half- Managed all aspects of on-site clinics including paperwork, sales, and a staff of at least three- Ensured mobile rig’s consistent attendance and performance at clinic sites- Made recommendations for medication and performed vaccinations and blood draws- Recognized as one of the.

Aug 2010 - Apr 2012

Customer Service Specialist

Rei

Seattle, US

Process all monetary transactions, including returns, repairs, and out of store ordersProvide friendly and efficient customer service by clearly communicating store policies and product informationMaintain an organized and fully stocked working environment

Aug 2008 - Jun 2009

Instructional Student Assistant

Rohnert Park, CA, US

- Develop Calculus curriculum on a weekly basis to supplement existing lessons- Implement lessons in a full classroom and provided one-on-one tutoring as needed- Accurately grade assignments from various courses such as Calculus I & II, Geometry, and Algebra

Sep 2007 - May 2009

Camp Counselor

City Of Concord Community & Recreation Services

Planning, organizing, leading and supervising children's activities while maintaining a safe environmentEstablish positive relationships with the participants, parents and staff

Jun 2007 - Aug 2007
Team & coworkers

Colleagues at Handshake

Other employees you can reach at joinhandshake.com. View company contacts for 1219 employees →

3 education records

Charles Simms education

In Bachelor Of Arts, Mathematics

Sonoma State University

Education record

App Academy

Mathematics, Swedish Language And Culture

Uppsala University Csu Ip Exchange Program
FAQ

Frequently asked questions about Charles Simms

Quick answers generated from the profile data available on this page.

What company does Charles Simms work for?

Charles Simms works for Handshake.

What is Charles Simms's role at Handshake?

Charles Simms is listed as Senior Software Engineer at Handshake.

What is Charles Simms's email address?

AeroLeads has found 2 work email signals at @rei.com for Charles Simms at Handshake.

What is Charles Simms's phone number?

AeroLeads has found 4 phone signal(s) with area code 925, 727, 888 for Charles Simms at Handshake.

Where is Charles Simms based?

Charles Simms is based in Emeryville, California, United States while working with Handshake.

What companies has Charles Simms worked for?

Charles Simms has worked for Handshake, Vital, Marqeta, Inc, App Academy, and Private Tutor.

Who are Charles Simms's colleagues at Handshake?

Charles Simms's colleagues at Handshake include Sondos Gamal, Maung Naing, Courtney Puckett, Gracie Lowden, and Bryan Reboton.

How can I contact Charles Simms?

You can use AeroLeads to view verified contact signals for Charles Simms at Handshake, including work email, phone, and LinkedIn data when available.

What schools did Charles Simms attend?

Charles Simms holds In Bachelor Of Arts, Mathematics from Sonoma State University.

What skills is Charles Simms known for?

Charles Simms is listed with skills including Ruby, Ruby On Rails, Jquery, Javascript, Html, Css, Sql, and Git.

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