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John Jemsek Email & Phone Number
Chief Technology Officer
at
POWWR
LinkedIn matched
✓ Verified July 2026
3 data sources
Profile completeness 86%
Current company
Role
Chief Technology Officer
Location
United States
Company size
Who is John Jemsek? Overview
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Quick answer
John Jemsek is listed as Chief Technology Officer at POWWR, a with 111 employees, based in United States. AeroLeads shows a matched LinkedIn profile for John Jemsek.
John Jemsek previously worked as VP of Software Engineering, Shared Services at Avalara and Senior Director of Software Engineering, AvaTax at Avalara. John Jemsek holds Bs, Computer Science from University Of North Carolina At Chapel Hill.
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POWWR
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Profile bio
About John Jemsek
John Jemsek is a Chief Technology Officer at POWWR.
Current workplace
John Jemsek's current company
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Powwr
8 roles
John Jemsek work experience
A career timeline built from the work history available for this profile.
Chief Technology Officer
Vp Of Software Engineering, Shared Services
Driving Avalara's growth through unified, efficient solutions.
May 2019 - Jun 2024
Senior Director Of Software Engineering, Avatax
Managed and grew a geographically distributed engineering organization tasked with modernizing and scaling AvaTax, Avalara's flagship product. Spearheaded cloud-native architectural transformations.
Jan 2018 - May 2019
Architect And Director Of Software Engineering, Certcapture
Responsible for managing all aspects of the architecture, design and software development lifecycle of CertCapture and related product lines. Coordinated integrations with internal products, third party applications, and client software. Managed a full platform expansion to native cloud services. Spearheaded the architecture, design and development of CertExpress (https://app.certexpress.com/), a new product offering for completing, submitting and managing exemption certificates digitally online.
Feb 2013 - Jan 2018
Director Of Engineering And Chief Architect, Certcapture
Tax Technology Services, Llc
Managed all aspects of software design, development, architecture, and release management. Spearheaded the growth of the CertCapture product from a concept to a leading enterprise exemption management solution. Coordinated and planned systems integrations with enterprise clients and managed the scaling of both the system architecture and development team through periods of rapid growth. Contributed to business success that lead to Tax Technology Services, LLC and the CertCapture product being acquired by Avalara in 2013.
Jul 2007 - Feb 2013
Application Technical Prime
Owned the systems management of multiple centralized HRIS systems. Partnered with HR, development, and product teams to ensure the reliability and performance of critical HR infrastructure.
Jan 2004 - Jul 2007
Software Engineer
Managed the development of corrective and feature patches for both DMS and succession systems. Created, designed, developed and maintained XPATS, a web-based workflow tool for tracking, searching, and managing the lifecycle of patch development.
Aug 2000 - Jan 2004
Team & coworkers
Colleagues at POWWR
Other employees you can reach at powwr.com. View company contacts for 111 employees →
BS
Bagus Sujadmika
Colleague at PowwrIndonesia
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MG
Max Griffin
Colleague at PowwrSalford, England, United Kingdom
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LP
Luke Paling
Colleague at PowwrUnited Kingdom
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CD
Casey Dee
Colleague at PowwrDanbury, Connecticut, United States
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IP
Ian Palao
Colleague at PowwrCoppell, Texas, United States
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AS
Ahmad Salfani
Colleague at PowwrIndonesia
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TY
Travis Yost
Colleague at PowwrLeavittsburg, Ohio, United States
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LC
Lutfi Cuthox
Colleague at PowwrIndonesia
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BP
Bob Powwr-Pug
Colleague at PowwrConnecticut, United States
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PH
Paul Hodnett
Colleague at PowwrGreater Manchester, England, United Kingdom
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Bagus Sujadmika
Colleague at PowwrIndonesia
View →
MG
Max Griffin
Colleague at PowwrSalford, England, United Kingdom
View →
LP
Luke Paling
Colleague at PowwrUnited Kingdom
View →
CD
Casey Dee
Colleague at PowwrDanbury, Connecticut, United States
View →
IP
Ian Palao
Colleague at PowwrCoppell, Texas, United States
View →
AS
Ahmad Salfani
Colleague at PowwrIndonesia
View →
TY
Travis Yost
Colleague at PowwrLeavittsburg, Ohio, United States
View →
LC
Lutfi Cuthox
Colleague at PowwrIndonesia
View →
BP
Bob Powwr-Pug
Colleague at PowwrConnecticut, United States
View →
PH
Paul Hodnett
Colleague at PowwrGreater Manchester, England, United Kingdom
View →
1 education record
John Jemsek education
FAQ
Frequently asked questions about John Jemsek
Quick answers generated from the profile data available on this page.
What company does John Jemsek work for?
John Jemsek works for POWWR.
What is John Jemsek's role at POWWR?
John Jemsek is listed as Chief Technology Officer at POWWR.
Where is John Jemsek based?
John Jemsek is based in United States while working with POWWR.
What companies has John Jemsek worked for?
John Jemsek has worked for Powwr, Avalara, Tax Technology Services, Llc, and Nortel Networks.
Who are John Jemsek's colleagues at POWWR?
John Jemsek's colleagues at POWWR include Bagus Sujadmika, Max Griffin, Luke Paling, Casey Dee, and Ian Palao.
How can I contact John Jemsek?
You can use AeroLeads to view verified contact signals for John Jemsek at POWWR, including work email, phone, and LinkedIn data when available.
What schools did John Jemsek attend?
John Jemsek holds Bs, Computer Science from University Of North Carolina At Chapel Hill.
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