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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

PythonSQLJavaScriptPandasscikit-learnPlotlyTableauExcelGitJIRA


Live Projects

🤖 AI & Machine Learning

ProjectWhat It DoesStackLinks
ML Explainability & MonitoringSHAP-style feature explanations · Data drift detection (PSI) · Fairness analysis · Partial dependence plots · What-if simulatorPlotly.js · JS MLDemo · Code
Customer Intelligence PlatformK-Means clustering · RFM segmentation · Churn prediction · Cohort retention · Sankey customer journeyPlotly.js · JS MLDemo · Code
NLP Sentiment & Text AnalyticsLexicon-based sentiment · TF-IDF keyword extraction · Aspect-based analysis · 5,000+ review corpusPlotly.js · NLPDemo · Code
RAG Pipeline AnalyticsEmbedding space visualisation (t-SNE) · Retrieval quality heatmaps · Cosine similarity · MCP trackingPlotly.js · VectorsDemo · Code
Customer Churn PredictionSQL exploration → Feature engineering → Logistic Regression + Random Forest · 82% accuracy · AUC 0.86Python · scikit-learn · SQLDemo · Code

📊 Data Analytics & Business Intelligence

ProjectWhat It DoesStackLinks
A/B Testing Analyticsz-test / t-test · Bayesian analysis · Sequential testing · Sample size calculator · Power analysisPlotly.js · StatisticsDemo · Code
Time-Series ForecastingTrend-seasonal decomposition · Multiple forecasting methods · Anomaly detection · Residual analysisPlotly.js · ForecastingDemo · Code
Real-Time Operations AnalyticsLive KPI ticker (2.5s refresh) · Geographic heatmap · System health monitor · Threshold alertsPlotly.js · Real-timeDemo · Code
Financial KPI DashboardRevenue vs Budget vs Forecast · EBITDA · P&L waterfall · Budget Variance RAG · UK retail dataPython · Excel · Plotly.jsDemo · Code
UK Job Market Analysis5,000+ listings scraped · Salary distributions · Top skills · Regional demand · Remote vs hybridPython · BeautifulSoupDemo · Code

What These Projects Demonstrate

SkillEvidence
End-to-End DeliveryEvery project: raw data → modelling → deployed interactive dashboard
Machine LearningK-Means, Logistic Regression, Random Forest — implemented from scratch, not just library calls
Statistical RigourZ-tests, Bayesian inference, power analysis, confidence intervals (A/B Testing)
NLPSentiment lexicons, TF-IDF, aspect-based analysis, topic extraction
AI InfrastructureRAG pipelines, embedding spaces, MCP integration, retrieval metrics
Model GovernanceSHAP explanations, data drift (PSI), fairness auditing
Real-Time SystemsLive data simulation, streaming KPIs, alerting
Financial LiteracyP&L analysis, EBITDA, budget variance, gross margin modelling

GitHub Activity

GitHub StreakContribution 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-analysisuk-job-market-analysisPublic

    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-predictioncustomer-churn-predictionPublic

    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-dashboardfinancial-kpi-dashboardPublic

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

    HTML