SPSam Penkett
@sampenkett
Data, BI and AI analyst delivering actionable analytics for retail, e-commerce, telecom and HR.
United KingdomWhat I'm looking for
I am a Data / BI / AI Analyst experienced in end-to-end analytics, ETL, data modeling, automation and AI-driven insights across retail, e-commerce, telecom and HR domains.
I translate large, complex datasets into clear, decision-ready dashboards using MySQL, Python (Pandas), Power BI (DAX, data modeling), Tableau and Excel, and I emphasize KPI design and performance measurement.
My projects include AI-enhanced e-commerce and retail dashboards, call centre performance reporting and HR attrition analysis, where I delivered automated reporting that reduced analysis time and supervisor review effort significantly.
I hold professional certificates in Tableau and Microsoft Power BI, MySQL, Excel and Python study via analyst-focused programs, and I bring additional life experience from international roles in performance and teaching.
Experience
Work history, roles, and key accomplishments
Freelance Analytics Consultant
Project: Olist Customer Insights
Dec 2025 - Dec 2025 (0 months)
Built AI-enhanced Tableau dashboards for e-commerce performance across 99,441 customers and 1,000,163 geolocations, automating weekly reporting and cutting analysis time from 2 hours to under 10 minutes.
Data Analyst (Project: Olist Customer Insights)
Project — Olist
Dec 2025 - Dec 2025 (0 months)
Delivered AI-enhanced e-commerce dashboards analyzing 99,441 customers and 1,000,163 geolocations, built geospatial and segmentation views, validated 100k+ profiles, and automated weekly reporting reducing analysis time from 2 hours to under 10 minutes.
Data Analyst (Call Center Performance)
Project — Call Center
Nov 2025 - Nov 2025 (0 months)
Developed Tableau dashboards benchmarking 5,000 calls across 8 agents (AHT 3m44s, FCR 71.2%, CSAT 49.9%), added exception flags and drilldowns to increase decision speed by 40% and reduce supervisor review time to under 10 minutes.
Call Center BI Analyst
Project: Call Center Performance
Nov 2025 - Nov 2025 (0 months)
Developed Tableau dashboards benchmarking 5,000 calls across 8 agents, introduced exception flags and drilldowns, increasing decision-making speed by 40% and reducing supervisor review time to under 10 minutes.
Retail BI Analyst
Project: AI-Driven Retail Insights
Nov 2025 - Nov 2025 (0 months)
Designed Power BI star-schema models and 20+ DAX measures for retail reporting, integrated AI-generated insights, and reduced manual reporting workload by 80%.
BI Analyst (Retail Insights)
Project — Retail
Nov 2025 - Nov 2025 (0 months)
Built a Power BI retail analytics app modeling 9,994 sales records with 20+ DAX measures and a star-schema, integrating AI insights to speed reporting and reduce manual workload by 80%.
HR Analytics Consultant
Project: Employee Attrition Analysis
Oct 2025 - Oct 2025 (0 months)
Transformed 1,000+ employee records with SQL and Power BI, built 15+ DAX measures and automated KPI cards to reduce monthly reporting time by 70%.
HR Analytics Analyst
Project — HR Analytics
Oct 2025 - Oct 2025 (0 months)
Transformed 1,000+ employee records with SQL and Power BI, created 15+ DAX measures and role-based segmentation dashboards, and automated KPI cards to cut monthly reporting time by 70%.
English Teacher
Taiwan ESL Schools
Jan 2014 - Jan 2025 (11 years)
Taught English as a Second Language in Taiwan across multiple institutions, delivering curriculum and classroom instruction from 2014 to 2025.
Professional Singer
England Performer
Jan 2008 - Jan 2014 (6 years)
Performed professionally as a singer in England, managing bookings and live performances between 2008 and 2014.
Data / BI / AI Analyst
Self Employed
Delivered end-to-end analytics, ETL, and AI-driven dashboards for retail, e-commerce, telecom, and HR clients, automating reporting to reduce analysis time by up to 80% and improving KPI visibility.
Education
Degrees, certifications, and relevant coursework
Trinity College of Music, London
Bachelor of Music (Hons), Music
Completed a Bachelor of Music (Hons) degree focused on performance and musical studies, awarded in 2008.
COCoursera (online)
Professional Certificate, Data Analysis / Business Intelligence
Completed professional certificates in Tableau Business Intelligence and Microsoft Power BI Data Analysis through Coursera.
Analyst Builder (certifications)
Certificate, Data Tools (MySQL, Excel, Python)
Completed certifications in MySQL, Excel, and Python through the Analyst Builder program.
Tech stack
Software and tools used professionally
Availability
Location
United KingdomAuthorized to work in
Portfolio
spenkett.wixsite.com/datasiteJob categories
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