Portfolio · Ritam Chakraborty
Senior Business Process Analyst · Data & AI

Ritam Chakraborty

TCS · PWC · Snapdeal

Results-driven Senior business process Analyst with three years of experience in data cleaning, analysis and using Excel, G-Sheet, MS Office and SAP ISU in UK-Utility-Domain. Certified in Data Science with AI/ML, bringing a strong analytical mindset and attention to detail. Proven ability to translate complex data into actionable insights to support business growth. Committed to continuous learning and adapting to evolving data technologies and methodologies.

Ritam Chakraborty
Work experience

Professional history

Jan 2024 – Present
UK · On-site
Tata Consultancy Services · EON Next Energy
Senior Business Process Analyst
  • Collected, cleaned, and analyzed operational and business data to generate actionable reporting for stakeholders.
  • Built and maintained Excel dashboards to support business planning, track KPIs, and surface trends for leadership.
  • Collaborated cross-functionally with technology, finance, and operations teams to align data outputs with business goals.
  • Partnered with the MIS team to manage, validate, and report on critical operational datasets.
  • Managed project timelines and streamlined delivery workflows, reducing turnaround times.
Mar 2023 – Dec 2023
UK · On-site
Tata Consultancy Services · EDF Energy
Business Process Analyst
  • Processed invoice payments accurately and maintained entries in the account database.
  • Prepared reports and maintained process documentation in line with company compliance standards.
  • Took ownership of client and data management responsibilities, ensuring data integrity and timely communication.
Project work & internships

Internship Projects

01
PWC India · February 2026
GenAI-Powered Sales Analytics Chatbot
Data preprocessing, SQL, KPI tracking & automated reporting
  • Designed a Streamlit analytics application in Python to track retail KPIs including multi-year revenue trends and quarterly growth.
  • Used Pandas to extract, clean, and transform raw Excel data, loading results into SQLite for efficient querying.
  • Built an insight engine translating SQL results into executive-friendly summaries with downloadable CSV exports.
  • Integrated OpenAI API enabling non-technical stakeholders to query complex databases in plain English.
PythonPandasSQLiteStreamlitOpenAI APISQL
02
PWC India · February 2026
AI Fraud Analysis & Monitoring Tool
EDA, anomaly detection, visualization & stakeholder communication
  • Analyzed daily banking transactions using Scikit-Learn (Isolation Forest) to isolate the top 3% of high-risk fraud cases.
  • Designed scatter plots and charts using Seaborn and Matplotlib to highlight suspicious transaction patterns.
  • Built a Streamlit dashboard with dynamic filtering to support analyst review of fraudulent records.
  • Leveraged Google Gemini API to auto-generate business explanations for flagged transactions, accelerating manual review.
Scikit-LearnSeabornMatplotlibStreamlitGemini APIAnomaly Detection
03
Snapdeal · March 2026
Customer Segmentation with K-Means Clustering
Data cleaning, exploratory analysis, customer behavior & clustering
  • Engineered a K-means clustering model in Python to segment customers and identify distinct purchasing behaviors for targeted marketing.
  • Designed data cleaning workflows to handle missing values, outliers, and normalization for ML-ready inputs.
  • Analyzed large-scale e-commerce transaction datasets to translate complex data into actionable business metrics.
PythonK-MeansPandasEDANumPyScikit-Learn
Capabilities

Technical skills

Machine Learning & AI
Scikit-LearnIsolation ForestAnomaly DetectionOpenAI API (GPT-4)Google Gemini APIPrompt EngineeringNLP
Python & Data Analysis
NumPyPandasMatplotlibSeabornEDAMySQLML ModelsGenerative AI
Languages & Databases
PythonSQLSQLite
Business & Reporting
Excel DashboardsGoogle SheetsSAP ISUKrakenData ValidationUtility Data AnalysisMS Office
Development & Visualisation
VS CodeJupyter NotebookAnacondaStreamlitGitHub
Professional skills
Cross-functional collaborationClient managementProcess documentationTeam upskillingAnalytical thinking
Academic background

Education

Jul 2025 – Feb 2026
Professional Certificate in AI & Data Science
UpGrad
Python for Data Science · Generative AI · BI Tools · Machine Learning · Statistics
82.93%
Score
Jun 2021 – Aug 2023
Master of Science in Biotechnology
Swami Vivekananda University
Python · Protein Structures · Excel · MS Office · Presentations
8.11
CGPA
Apr 2018 – Jun 2021
Bachelor of Science in Bioscience
University of Burdwan
Chemistry · Laboratory Work · Excel · MS Office · Presentations
7.20
CGPA
Credentials

Certifications

UpGrad
Professional Certificate Program in AI & Data Science
Coursera
Basics of Python Programming and Data Structures
LinkedIn Learning
Introduction to Artificial Intelligence
LinkedIn Learning
Data Analytics for Business Professionals
Languages
English
Professional
Bengali
Native
Hindi
Proficient