Oliver Liiv is a data engineer at Helmes, having joined the company in December 2021. Prior to this role, Oliver worked at ENEFIT as an Analyst of New Connections and Fast Internet, where responsibilities included transferring team reports from SAP BO to Tableau Server and creating reports to support sales and construction operations. Experience at Elektrilevi involved analyzing datasets related to annual power consumption and geoinformation, alongside managing pricing models for new connections. Earlier career stages included positions at ABB, where Oliver served as a BU Sourcing Manager and Purchaser, focusing on material negotiation and procurement, and as an Audit Assistant at KPMG, participating in financial audits and controls. Educational background includes a Bachelor's degree in Power Engineering and ongoing pursuit of a Master's degree in Energy Trade from TalTech – Tallinn University of Technology.