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mayankjoshiii/README.md

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About

Business Analyst and Data Analyst with 4+ years of industry experience at Google LLC and an MSc in Business Analytics (Distinction) from Swansea University. I build end-to-end analytical solutions — from data extraction and statistical modelling to production-grade interactive dashboards that drive real decisions.

Every project below has a live interactive demo. No installation. Click and explore.


Tech Stack

Python SQL JavaScript Pandas scikit-learn Plotly Tableau Excel Git JIRA


Live Projects

🤖 AI & Machine Learning

Project What It Does Stack Links
ML Explainability & Monitoring SHAP-style feature explanations · Data drift detection (PSI) · Fairness analysis · Partial dependence plots · What-if simulator Plotly.js · JS ML Demo · Code
Customer Intelligence Platform K-Means clustering · RFM segmentation · Churn prediction · Cohort retention · Sankey customer journey Plotly.js · JS ML Demo · Code
NLP Sentiment & Text Analytics Lexicon-based sentiment · TF-IDF keyword extraction · Aspect-based analysis · 5,000+ review corpus Plotly.js · NLP Demo · Code
RAG Pipeline Analytics Embedding space visualisation (t-SNE) · Retrieval quality heatmaps · Cosine similarity · MCP tracking Plotly.js · Vectors Demo · Code
Customer Churn Prediction SQL exploration → Feature engineering → Logistic Regression + Random Forest · 82% accuracy · AUC 0.86 Python · scikit-learn · SQL Demo · Code

📊 Data Analytics & Business Intelligence

Project What It Does Stack Links
A/B Testing Analytics z-test / t-test · Bayesian analysis · Sequential testing · Sample size calculator · Power analysis Plotly.js · Statistics Demo · Code
Time-Series Forecasting Trend-seasonal decomposition · Multiple forecasting methods · Anomaly detection · Residual analysis Plotly.js · Forecasting Demo · Code
Real-Time Operations Analytics Live KPI ticker (2.5s refresh) · Geographic heatmap · System health monitor · Threshold alerts Plotly.js · Real-time Demo · Code
Financial KPI Dashboard Revenue vs Budget vs Forecast · EBITDA · P&L waterfall · Budget Variance RAG · UK retail data Python · Excel · Plotly.js Demo · Code
UK Job Market Analysis 5,000+ listings scraped · Salary distributions · Top skills · Regional demand · Remote vs hybrid Python · BeautifulSoup Demo · Code

What These Projects Demonstrate

Skill Evidence
End-to-End Delivery Every project: raw data → modelling → deployed interactive dashboard
Machine Learning K-Means, Logistic Regression, Random Forest — implemented from scratch, not just library calls
Statistical Rigour Z-tests, Bayesian inference, power analysis, confidence intervals (A/B Testing)
NLP Sentiment lexicons, TF-IDF, aspect-based analysis, topic extraction
AI Infrastructure RAG pipelines, embedding spaces, MCP integration, retrieval metrics
Model Governance SHAP explanations, data drift (PSI), fairness auditing
Real-Time Systems Live data simulation, streaming KPIs, alerting
Financial Literacy P&L analysis, EBITDA, budget variance, gross margin modelling

GitHub Activity

GitHub Streak    Contribution Graph

Open to Business Analyst & Data Analyst roles — any industry, worldwide

UK-based · Graduate Visa · Available immediately

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Pinned Loading

  1. uk-job-market-analysis uk-job-market-analysis Public

    UK BA/DA Job Market Analysis | 5,000+ listings scraped | Salary trends, top skills & regional demand | Python · Plotly.js · GitHub Pages

    HTML

  2. customer-churn-prediction customer-churn-prediction Public

    End-to-end ML pipeline | Customer churn prediction | Logistic Regression + Random Forest | 82% accuracy, AUC 0.86 | Python · SQL · scikit-learn

    HTML

  3. financial-kpi-dashboard financial-kpi-dashboard Public

    Interactive Financial KPI Dashboard | Revenue vs Budget vs Forecast | Gross Margin, EBITDA & Variance Analysis | UK Retail Sales 2024

    HTML 1