David Szarzynski
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David Szarzynski Email & Phone Number

Founding Engineer at Hyperspell (YC F25)
Location: Oakland, California, United States 13 work roles 2 schools
1 work email found @wework.com 2 phones found area 805 LinkedIn matched
✓ Verified Jul 2026 4 data sources Profile completeness 100%

Contact Signals · 1 work email · 2 phones

Work email d****@wework.com
Direct phone (805) ***-****
LinkedIn Profile matched
3 free lookups remaining · No credit card
Current company
Role
Founding Engineer
Location
Oakland, California, United States
Company size

Who is David Szarzynski? Overview

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Quick answer

David Szarzynski is listed as Founding Engineer at Hyperspell (YC F25), a with 6 employees, based in Oakland, California, United States. AeroLeads shows a work email signal at wework.com, phone signal with area code 805, and a matched LinkedIn profile for David Szarzynski.

David Szarzynski previously worked as Software Engineer at Attorney Share and Software Engineer at Wework. David Szarzynski holds J.D., Taxation And Business Law, 3.412 from University Of Minnesota Law School.

Company email context

Email format at Hyperspell (YC F25)

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{first}.{last}@wework.com
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AeroLeads found 1 current-domain work email signal for David Szarzynski. Compare company email patterns before reaching out.

Profile bio

About David Szarzynski

David Szarzynski is a Founding Engineer at Hyperspell (YC F25). He possess expertise in tax law, legal writing, tax preparation, tax, international tax and 19 more skills.

Listed skills include Tax Law, Legal Writing, Tax Preparation, Tax, and 20 others.

Current workplace

David Szarzynski's current company

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

Hyperspell (YC F25)
Hyperspell (Yc F25)
Founding Engineer
San Francisco, CA, US
Website
Employees
6
AeroLeads page
13 roles · 22 years

David Szarzynski work experience

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

Software Engineer

Los Angeles, California, United States

Software Engineer

San Francisco Bay Area

Notable Accomplishments* Built WeWork's internal Engineering Access Control tool -- Concierge -- reducing onboarding and offboarding time from 3-4 days to a mere 15 minutes.* Developed custom corporate integrations between WeWork's Kubernetes clusters and every external engineering service WeWork Engineers used, in both Typescript and Golang for WeWork's backend.* Achieved a 95% reduction in SRE tickets within a span of 5 months through automation.* Spearheaded the migration of WeWork.Com from vanilla Javascript to React, leading to a 25% surge in checkout flow performance.* Designed and built a user interface for WeWork's internal kubernetes cluster that was used by 95% of all wework engineers weekly within 1 month of launch.* The same UI improved mean time to respond to outages by 30%.* Led a total redesign of engineer access to services in response to SOX requirements, and bridged the gap between engineering and legal. My department passed SOX checks because of this work.* As WeWork shrunk, I implemented open-source solutions to what were once custom internal tools that reduced the number of sprints between rolling out new features in half.

Aug 2018 - Jun 2023

Associate

Goldberg, Gluck, And Brusilovsky, Llp

Foster City, California

Mar 2018 - Aug 2018

Attorney

Michael J Miller, Cpa

San Francisco Bay Area

Associate at a boutique accounting and tax controversy firm. Brought in to provide IRS tax interpretation, state and federal tax litigation for clients and general business law management: contract, risk assessment, and liability control. Provides Federal and state tax compliance, general ledger accounting services, accounting and tax planning for businesses and individuals with $100,000 to $10million in income.Defends IRS audits, and performs tax compliance and IRS and FTB settlements.Specialized in Registered Domestic Partners and the peculiar tax consequences they face, resulting from ever-changing law and the most recent Supreme Court decisions that change the IRS's positions monthly.Create year-end P&L, and balance sheets, and federal and local tax returns. Provide business creation and consultation for individuals and businesses changing their entities and restructuring.

Dec 2016 - Feb 2018

Associate

Dmr

Pinole, California

Tax litigation, audit defense, and tax representation before the IRS and State agencies— including payroll tax audits, California registered domestic partnerships, and residency disputes. Performed monthly AR process improvement, client tax compliance and recordkeeping.

Jan 2015 - Dec 2016

Associate

Book keeping, tax planning and tax preparation for high net worth individualsDefended IRS audits, and performed tax compliance and IRS and FTB settlements for small businesses and individuals.

Jan 2014 - May 2014

Fellow

Insight Center For Community Economic Development

Oakland, Ca

Fellow under long time General Counsel Brad Caftel. Provided legal support to the diverse teams of Insight. Taught Legal Education on the use of LLCs for small and new businesses. Wrote on the legal creation of Immigrant Co-Operatives.

Sep 2013 - Jan 2014

Director

Ronald M. Mankoff Tax Clinic

Greater Minneapolis-St. Paul Area

Solved IRS and state tax disputes with low income clients for an IRS sponsored Tax Clinic. To date, reduced the total tax liability of over 15 clients by a combined $150,000.

Aug 2011 - Apr 2013

Intern - Medicare And Retirement

Greater Minneapolis-St. Paul Area

Researched, analyzed, prepared, and edited memos with legal recommendations regarding New York filing benefit requirements, HIPPA qualifications, Kentucky inducement laws, and more. Concentrated in the Medicare and Retirement Legal department, with focus providing legal analysis, state law analysis, and interpretation of CMS guidance and regulations

Jun 2012 - Aug 2012

Judicial Extern

Minnesota Tax Court

Interned with Chief Judge Perez and Judge Sanberg; Researched and produced judicial opinions and bench memos regarding property tax appraisals, Minnesota income tax residency, and the deductibility of gambling losses.

Jun 2011 - Jan 2012

Project Manager

Interoperability Systems International

Lead software development teams at a NATO Secret classified communications company; developed work schedules and budgets; met clients and advised senior management; prepared monthly, quarterly, and yearly project financial statements.

Jun 2007 - Jun 2009

Supervisor

University Of Minnesota Security Monitor Program

Supervisor of security at a Big 10 college campus

2005 - 2007 ~2 yrs
2 education records

David Szarzynski education

FAQ

Frequently asked questions about David Szarzynski

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

What company does David Szarzynski work for?

David Szarzynski works for Hyperspell (YC F25).

What is David Szarzynski's role at Hyperspell (YC F25)?

David Szarzynski is listed as Founding Engineer at Hyperspell (YC F25).

What is David Szarzynski's email address?

AeroLeads has found 1 work email signal at @wework.com for David Szarzynski at Hyperspell (YC F25).

What is David Szarzynski's phone number?

AeroLeads has found 2 phone signal(s) with area code 805 for David Szarzynski at Hyperspell (YC F25).

Where is David Szarzynski based?

David Szarzynski is based in Oakland, California, United States while working with Hyperspell (YC F25).

What companies has David Szarzynski worked for?

David Szarzynski has worked for Hyperspell (Yc F25), Attorney Share, Wework, Goldberg, Gluck, And Brusilovsky, Llp, and Michael J Miller, Cpa.

How can I contact David Szarzynski?

You can use AeroLeads to view verified contact signals for David Szarzynski at Hyperspell (YC F25), including work email, phone, and LinkedIn data when available.

What schools did David Szarzynski attend?

David Szarzynski holds J.D., Taxation And Business Law, 3.412 from University Of Minnesota Law School.

What skills is David Szarzynski known for?

David Szarzynski is listed with skills including Tax Law, Legal Writing, Tax Preparation, Tax, International Tax, Employee Benefits, Analysis, and Small Business.

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