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Palaniappan Ponniah

@palaniappanponniah

Message

Senior data analyst turning messy datasets into dashboards and insights that drive business decisions.

India

Message

What I'm looking for

I’m looking for a role where I can own metrics end-to-end—SQL and BI dashboarding, data modeling, and stakeholder communication—building reliable data flows that speed decisions, reduce root-cause time, and deliver measurable business impact.

I’m a Data Analyst with 12+ years turning large, messy datasets into dashboards and insights that drive business decisions. I bring deep hands-on experience in SQL, Looker, Tableau, and Power BI across supply chain, marketing, product, and customer analytics in enterprise environments.

I’ve owned analytics end-to-end—requirements gathering, data modeling, visualization, and stakeholder communication. At Walmart Global Tech, I built 25+ interactive Looker dashboards, streamlined margin improvement initiatives that delivered $12M+ pre-launch cost savings, and cut root-cause-analysis time by up to 70% by redesigning analytical data flows.

I also focus on adoption and reliability: I spearheaded a “Bug-a-thon” that resolved 140+ data-asset issues and led internal sessions on data visualization best practices for 70+ team members. I’m comfortable partnering cross-functionally to turn ambiguous reporting needs into production-ready dashboards.

Experience

Work history, roles, and key accomplishments

Current

BI Analyst

Current

TireAgent.com

Feb 2025 - Present (1 year 5 months)

Built and maintained multiple Looker dashboards with the Marketing team to provide self-serve visibility into campaign and channel performance. Analyzed A/B test results and translated ambiguous reporting requirements into production-ready dashboards.

Looker LookML Dashboarding Marketing Analytics Data Visualization

Senior Data Analyst

Walmart Global Tech

Jan 2022 - Aug 2024 (2 years 7 months)

Built 25+ interactive Looker dashboards to improve data accessibility and speed up decision-making across the organization. Led Tableau and Looker visualization for supply chain projects, including work that saved $12M+ pre-launch and reduced root-cause-analysis time by up to 70%.

Looker Tableau Power BI Dashboarding Data Visualization Supply Chain Analytics Root Cause Analysis

Data Analyst III

Walmart Global Tech

Jun 2020 - Jan 2022 (1 year 7 months)

Designed Tableau and Power BI dashboards to increase leadership engagement with key operating metrics. Ran internal data visualization best-practice sessions that improved data literacy for 70+ team members.

Tableau Power BI Dashboarding Data Visualization

Senior Analyst

LatentView Analytics Pvt Ltd

May 2016 - May 2020 (4 years)

Led dashboard design for subscription-program and team-level KPI tracking using Tableau and Power BI. Built marketing mix models to quantify the sales impact of ATL/BTL campaigns and delivered insights for social media performance via consumer perception and engagement dashboards.

Tableau Power BI KPI Reporting Marketing Mix Modeling Marketing Analytics Social Media Analytics

Business Presentation Specialist

McKinsey & Company

Dec 2013 - May 2016 (2 years 5 months)

Produced client-ready presentations from handwritten and electronic manuscripts, including creating new slides, formatting, and converting templates. Supported executive narrative delivery by structuring data-driven content.

Presentation Development Slide Design Template Conversion