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Sergei Sergeev
Cost Accountant @Polar Semiconductor
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Cost Accountant | Data Analyst | BI & Automation Enthusiast I’m a Cost Accountant with a strong analytical edge, combining finance expertise with data science to optimize operational efficiency and profitability. I specialize in cost modeling, variance analysis, and budgeting—enhanced by deep technical skills in Python, SQL, Power BI, and Tableau. With a hybrid background in finance and analytics, I transform complex data into clear, actionable insights through predictive modeling, interactive dashboards, and end-to-end reporting solutions. Whether it’s improving margin visibility or automating financial workflows, I bring a data-driven approach to business performance. Key Skills: • Cost Accounting | Budgeting | Variance Analysis • Data Wrangling | Regression | Clustering • Python | SQL | JavaScript | Power BI | Tableau • Financial Modeling | Dashboards | Decision Support 📬 Let’s connect—I’m open to collaboration, consulting, and freelance analytics projects.More...