Vignesh JM
Tableau Developer
Chennai
Summary
Adaptable Data Analyst skilled in recording, interpreting and analyzing data in a fast-paced environment. Experienced in preparing detailed analysis and reports while managing complex internal and external data analysis responsibilities. Skilled at furnishing insights, analytics and business intelligence needed to guide decisions.
Overview
8
8
years of professional experience
4
4
years of post-secondary education
Work History
Data Analyst
Tata Consultancy Services
07.2022 - Current
- Design, develop, conducts unit testing, and maintains complex Tableau reports for scalability, manageability, extensibility, performance and re-use resulting in a 15% improvement in dashboard design and user experience.
- Provide technical expertise in areas of architecture, design, and implementation.
- Determine best implementation that will meet design of architect.
- Work with team members to create useful reports and dashboards that provide insight, improve/automate processes, or otherwise add value to team.
- Work through iterative review cycles to deliver results that meet or exceed user expectations.
- Ensure consistency by adhering to a set of software coding and style guides.
- Resolve support tickets related to Tableau reports.
- Conducted ad-hoc analysis and reporting as needed to support business decisions, providing key insights that led to a 5% increase in revenue for the client.
Data Analyst
HCL Technology
12.2020 - 05.2022
- Built data and reporting infrastructure using Tableau and SQL to provide real-time insights into product and business KPIs.
- Built and published 20+ customized interactive Tableau reports and dashboards along with data refresh scheduling using Tableau Desktop and Tableau Server.
- Worked on automobile pricing analysis data set, comparing prices over time and enumerating major factors affecting price fluctuation
- Tuned SQL queries and indexing, resulting in 16% improvement in query performance within the data warehouse.
- Created macros, pivot tables and charts in excel to visualize sales trends and identify opportunities for improvement, leading to a 15% increase in sales productivity.
Data Analyst
Tenth Planet Technologies
12.2018 - 12.2020
- Processed data using Python and SQL to evaluate patterns and derive meaningful insights through qualitative and quantitative analysis.
- Created interactive cohort analysis reports in Tableau server for business team with global filters and parameters that helped improve monthly retention of customers.
- Worked on real estate data using Python to build web tool that would analyze real estate prices and output rate of returns that led to 33% faster decision-making.
- Analyzed data from multiple sources to identify trends and insights, leading to the identification of a new customer segment and a 10% increase in revenue from that segment.
Software Engineer
Sciera solutions
07.2016 - 12.2018
- Automated data cleansing process using Pig script across billions of rows of data, which saved several hours of manual work per month.
- Used stored procedure, triggers and views to provide structured data to business units by combining millions of rows of data.
- Developed and maintained data governance and data quality standards, resulting in a 50% reduction in data errors and a 25% increase in data reliability.
- Worked in collaborative Agile environment with other software engineers, data engineers and data scientists.
Education
Bachelor of Science - Information Technology
Hindustan University
Chennai 07.2011 - 12.2015
Skills
Tableau
SQL: MySQL, Postgres, Microsoft SQL Server
Python: Pandas, Numpy, Seaborn, Scikit-learn
Hadoop: Pig Script, Hive, Sqoop
Modeling: Linear regressions, Logistic regressions, K-means clustering regression
Microsoft Office Suite
Additional Information
I strongly believe “It’s not the hours that are put into work; it’s the work that is done in an hour.”
Timeline
Data Analyst
Tata Consultancy Services
07.2022 - Current
Data Analyst
HCL Technology
12.2020 - 05.2022
Data Analyst
Tenth Planet Technologies
12.2018 - 12.2020
Software Engineer
Sciera solutions
07.2016 - 12.2018
Bachelor of Science - Information Technology
Hindustan University
07.2011 - 12.2015
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