siva chandran

Data Analyst

India 5+ yrs exp 90 · Outstanding

About

Results-driven Data Analyst with 4+ years of experience in designing and optimizing large-scale data solutions. Skilled in SQL, Python, and data modeling with strong expertise in building scalable ETL/ELT pipelines, interactive dashboards, and performance-tuned queries. Proficient in Power BI, BigQuery concepts, and cloud-based data processing. Experienced in handling large datasets, ensuring data governance, and delivering actionable insights to support business decision-making.

Skills & Expertise (20)

SQL Advanced

8.2/10

Years Exp

Python Advanced

8.0/10

Years Exp

Pivot Tables Advanced

8.0/10

Years Exp

Excel Advanced

8.0/10

Years Exp

Dashboard Development Advanced

8.0/10

Years Exp

Power BI Advanced

8.0/10

Years Exp

Pandas Advanced

8.0/10

Years Exp

NumPy Intermediate

7.5/10

Years Exp

Data Governance Intermediate

7.5/10

Years Exp

Power Query Intermediate

7.5/10

Years Exp

Data Processing Intermediate

7.5/10

Years Exp

ETL Intermediate

7.5/10

Years Exp

Data Modeling Intermediate

7.5/10

Years Exp

Power Pivot Intermediate

7.0/10

Years Exp

Advanced Formulas Intermediate

7.0/10

Years Exp

BigQuery Intermediate

6.5/10

Years Exp

Cloud Composer Intermediate

6.0/10

Years Exp

Airflow Intermediate

6.0/10

Years Exp

DAX Intermediate

5.5/10

Years Exp

ELT

Work Experience

Data Analyst

Cognizant Technology Solutions

Nov 2021 - Present

Designed and optimized data models (Star Schema) and implemented complex SQL queries (joins, window functions, CTEs) for performance tuning and efficient data extraction. Built and deployed ETL/ELT pipelines using Power Query, SQL, and Python (Pandas, NumPy) to ensure accurate and consistent data ingestion from multiple sources. Migrated legacy Excel/manual reports into automated dashboards (Power BI, SQL), improving reporting efficiency and scalability. Developed interactive dashboards with drill-down and drill-through features to monitor KPIs, SLA metrics, and operational performance. Implemented data governance and validation frameworks, ensuring accuracy and compliance across multiple business units. Automated report refresh and scheduling, reducing manual effort and enabling near real-time reporting. Collaborated with stakeholders to translate business requirements into scalable BI and data warehouse solutions. Applied Python scripting for data preprocessing, validation, and automation tasks, improving efficiency in handling large datasets.

Technical Support Associate

Sutherland Global Services

Aug 2020 - Feb 2021

Provided frontline technical support for Amazon devices/software, achieving high customer satisfaction scores. Maintained accurate data entry in ticketing systems and analyzed incident trends for continuous improvement. Met key performance metrics including First-Call Resolution (FCR), Average Handling Time (AHT), and Customer Satisfaction(CSAT).