Mark O'Sullivan is an experienced professional in account management and business development, currently serving as an Account Executive at HubSpot since December 2025. Prior to this role, Mark held various positions at GoTo from October 2023 to December 2025, including EMEA BDR Team Lead and Senior Business Development Representative. Previous experience includes working at Grant Thornton Ireland in Talent Insights and Attraction from October 2022 to October 2023, and as a Tech Talent Acquisition Intern at Personio from April 2022 to October 2022. Mark began a career in recruitment as a Recruitment Specialist at Clarity Search Partners Ltd and Leinster Rugby, focusing on accounting and community rugby initiatives. Mark holds a BA(hons) in Human Resources Management and a CIPD Certificate and Diploma in Human Resources Management and Services from National College of Ireland, along with secondary education from St Fintans High School.
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