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Theena Ragavan

@theenaragavan

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I transform messy data into accurate, decision-ready insights using SQL, Python, and Power BI.

India

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What I'm looking for

I'm looking to turn complex, messy datasets into accurate, decision-ready outputs through ETL, data validation, SQL, Python, and Power BI, while partnering with stakeholders on meaningful business problems.

At Affiliated Monitoring, I execute end-to-end ETL and data migration for customer onboarding, transforming 5,000+ customer accounts into structured records in three months while meeting SLA targets.

I've built decision-ready analysis across SQL, Python, and Power BI, including a retail dashboard that identified root causes behind a 38% revenue decline. My projects span airline operations, retail performance, and workforce data, from data cleaning and validation through KPIs, dashboards, and recommendations.

I also bring business operations, client communication, and training experience. At ACTE Technology, I trained 50+ learners across SQL, Power BI, Advanced Excel, and Python, and I pair stakeholder-focused communication with hands-on technical delivery.

Experience

Work history, roles, and key accomplishments

Current

Data Transformation Analyst

Current

Affiliated Monitoring

Apr 2026 - Present (6 months)

Executed end-to-end data migration and ETL for customer onboarding, transforming 5,000+ customer accounts into structured records. Performed large-scale extraction, cleansing, and validation of customer and emergency-contact datasets, consistently meeting SLA targets.

ETL Data Migration Data Validation Data Cleaning data transformation Data Quality Management SQL Python Power BI Automation Macros

Freelance Data Analytics Trainer

ACTE Technology

Jun 2025 - May 2026 (11 months)

Delivered SQL, Power BI, Advanced Excel, and Python training across 11 batches (50+ learners) over one year, maintaining a 4.8/5.0 learner satisfaction rating. Designed hands-on analytics projects covering EDA, dashboarding, and business intelligence.

SQL Power BI Python Training Dashboarding Business Intelligence EDA

Data Analyst Intern

NanoBI Data & Analytics Pvt Ltd

Jun 2025 - Sep 2025 (3 months)

Tested an AI-powered sales chatbot prototype against 20+ sales datasets to identify and resolve bugs and data-quality issues. Conducted trend, profitability, and anomaly analysis on real-world business datasets, and improved a low-resource translation pipeline.

Python Pandas Matplotlib Flask Rasa LLM Ollama Mistral Data Quality Data Analysis Visualization

Business Operations Executive

ETIAM Research Products & Services Pvt Ltd

Dec 2023 - Aug 2024 (8 months)

Managed client communication, project coordination, and stakeholder presentations for domestic and international projects. Supported business development, recruitment, payroll coordination, and HR reporting, improving operational efficiency through process optimization and automation.

Client Communication Project Coordination Stakeholder Management Business Development Recruitment HR Reporting Process Optimization Automation

Business Development Executive

Chattara Chemicals & Traders

Feb 2022 - Jun 2023 (1 year 4 months)

Closed 2 major recurring supply deals through vendor sourcing and procurement analysis. Sourced a lower-cost bio-diesel supplier, cutting procurement cost by 10.67% and saving roughly ₹6,40,000 per month.

Sourcing Procurement Analysis Business Development Negotiation Vendor Management Recruitment