Charles Riordan
Arlington,MA
Summary
Hard-working Senior VAT Lead with extensive experience, excelling in US and international tax compliance and indirect tax audits. Proven track record in executing complex financial reconciliations and delivering compliance recommendations. Strong analytical and communication skills. Able to collaborate across teams, ensuring regulatory adherence and successful project outcomes.
Overview
12
12
years of professional experience
Work History
Senior VAT Lead
GOAT Group
01.2024 - 08.2026
- Executed preparation and submission of indirect tax filings for the United States and EMEA, AsiaPac jurisdictions.
- Managed and supported indirect tax audits in the United States and Europe to ensure compliance.
- Executed annual financial statement reconciliation for U.S. sales and use tax and international VAT.
- Researched tax implications of new business initiatives, providing compliance recommendations.
- Prepared month-end work papers and journal entries, including reconciliations for sales and use tax accounts.
- Monitored tax-related system changes' impact on calculated results, collaborating with cross-functional teams.
- Performed UAT testing of tax-related changes within internal systems and Avalara.
- Registered business entities in international jurisdictions to ensure tax compliance.
Manager
Sovos
01.2021 - 12.2023
- Designed and led projects for a team of research attorneys and programmers.
- Created product roadmaps, prioritized team commitments, and tracked deadlines.
- Oversaw software content development for 130+ European and international tax forms.
- Served as cross-functional point of contact across multiple global offices.
- Developed and conducted training sessions for new team members.
- Hosted webinars, authored blogs, and supported sales demonstrations.
Regulatory General Counsel
Sovos
01.2019 - 01.2021
- Monitored law changes in value-added tax across 25+ international jurisdictions to ensure compliance and inform strategic decisions.
- Wrote client-facing memoranda on legal questions.
- Directed research projects for junior team members, enhancing their skills and contributing to project outcomes.
- Authored blogs and thought pieces on Brexit, EU tax fraud, and indirect tax issues to educate clients and establish thought leadership.
Senior Regulatory Counsel
Sovos
01.2017 - 01.2019
Regulatory Counsel
Sovos
01.2016 - 01.2017
Junior Regulatory Counsel
Sovos
01.2015 - 01.2016
Education
Juris Doctor -
Boston College Law School
Newton, MA12-2013
Bachelor of Arts - Anthropology
Harvard College
Cambridge, MA05-2001
Skills
- Sales and use tax compliance
- International tax compliance
- Indirect tax audits
- Tax and regulatory research
- Analytical and problem-solving skills
- Effective communication
- Experience with Avalara and other tax systems
Hobbies and Interests
- Avid hiker, chess player, and amateur pianist.
Bar Admissions
Massachusetts, Admitted to practice
Timeline
Senior VAT Lead
GOAT Group
01.2024 - 08.2026
Manager
Sovos
01.2021 - 12.2023
Regulatory General Counsel
Sovos
01.2019 - 01.2021
Senior Regulatory Counsel
Sovos
01.2017 - 01.2019
Regulatory Counsel
Sovos
01.2016 - 01.2017
Junior Regulatory Counsel
Sovos
01.2015 - 01.2016
Juris Doctor -
Boston College Law School
Bachelor of Arts - Anthropology
Harvard College