Sammy K.

I help businesses transform complex, disconnected data into reliable reporting systems, interactive dashboards, and actionable insights that improve sales, marketing performance, customer retention, profitability, and operational efficiency. With 5+ years of experience in Data Analytics, Business Intelligence, Marketing Analytics, and Data Science, I build end-to-end solutions using Python, SQL, Power BI, Looker Studio, Tableau, and Excel. Whether you need to consolidate data from multiple platforms, automate reporting, monitor business performance, understand customer behavior, or develop predictive models, I deliver accurate, scalable, and business-focused solutions. 📊 BUSINESS INTELLIGENCE & REPORTING I design dashboards and reporting systems that give businesses a clear, consistent view of their performance. ◆ Power BI, Looker Studio, Tableau, Excel, and Google Sheets dashboards ◆ Executive reporting, KPI development, and performance monitoring ◆ Sales, revenue, profitability, and operational analytics ◆ Weekly and monthly reporting automation ◆ Data reconciliation, metric definitions, and quality assurance ◆ Ad hoc analysis, trend identification, and business recommendations 📈 E-COMMERCE & MARKETING ANALYTICS I help businesses understand marketing effectiveness, customer behavior, and the factors driving profitable growth. ◆ Meta Ads, Google Ads, GA4, and Shopify analytics ◆ Marketing campaign performance, ROAS, CAC, and LTV ◆ Customer acquisition, retention, and repeat purchase analysis ◆ Cohort analysis, segmentation, and conversion funnel optimization ◆ Product, channel, and customer profitability analysis ◆ Marketing attribution, incrementality, and A/B testing ◆ Advertising budget allocation and performance optimization ⚙️ DATA ENGINEERING & AUTOMATION I build reliable data pipelines that integrate business information, reduce manual work, and support consistent reporting. ◆ Python, pandas, SQL, PostgreSQL, and BigQuery ◆ ETL pipelines, REST API integrations, and data extraction ◆ Data cleaning, transformation, validation, and reconciliation ◆ Multi-platform data consolidation and database management ◆ Excel and Google Sheets automation ◆ Scheduled reporting workflows and data refreshes ◆ Data quality monitoring and technical documentation 🧠 DATA SCIENCE & PREDICTIVE ANALYTICS I develop advanced analytical models that help businesses forecast outcomes, optimize decisions, and identify growth opportunities. ◆ Machine Learning and predictive modeling ◆ Sales, revenue, and demand forecasting ◆ Customer churn prediction and behavioral segmentation ◆ Customer Lifetime Value (LTV) modeling ◆ Bayesian Marketing Mix Modeling (MMM) ◆ Causal inference and incrementality measurement ◆ Dynamic pricing and revenue optimization ◆ Statistical analysis, experimentation, and model evaluation 🏆 PROVEN RESULTS ◆ Improved forecasting accuracy by 35% through business intelligence and analytical solutions. ◆ Reduced manual reporting time by 60% through reporting automation. ◆ Contributed to an 18% improvement in marketing ROI through Marketing Mix Modeling and causal inference. ◆ Improved customer segmentation effectiveness by 20% through behavioral analytics. ◆ Built automated marketing reporting pipelines integrating advertising APIs, Python, PostgreSQL, Google Sheets, and Looker Studio. 🛠️ TOOLS & TECHNOLOGIES Data Analysis: Python, SQL, pandas, NumPy, R, Excel, Google Sheets Business Intelligence: Power BI, Tableau, Looker Studio, Data Visualization, KPI Reporting Marketing Analytics: Meta Ads, Google Ads, GA4, Shopify, Marketing Attribution, MMM Databases & Cloud: PostgreSQL, BigQuery, Snowflake, Databricks, Google Cloud, AWS, Azure Machine Learning: Scikit-learn, XGBoost, LightGBM, CatBoost, PyMC, NumPyro, TensorFlow Data Engineering: ETL, REST APIs, Data Integration, Automation, Data Validation WHY WORK WITH ME? As a Top Rated Plus freelancer, I combine technical expertise with a practical understanding of business operations. I focus on delivering accurate data, reliable systems, clear reporting, and insights that support meaningful decisions. I can independently manage analytics workflows from raw data extraction to dashboards, automated reports, and advanced predictive models. I also prioritize clear communication, documentation, and long-term reliability. LET'S WORK TOGETHER If you need a Data Analyst, Business Intelligence Specialist, Marketing Analytics Consultant, or Data Scientist to organize your data, automate reporting, improve marketing performance, or develop predictive solutions, let's discuss your project.