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Hi, I'm Aaron
Second-year Computer Science student at LUT University in Lappeenranta, Finland, with a minor in Industrial Engineering & Management. I thrive on turning complex problems into clear, data-driven solutions.
Lappeenranta · LUT UniversityAaron Mäkinen
Aaron Mäkinen
Data-Driven Problem Solver
Second-year Computer Science student at LUT University with a minor in Industrial Engineering & Management. Passionate about transforming raw data into actionable insights — specialising in Business Intelligence, data analytics, and solution-oriented decision-making.
Goal · Graduation Countdown
Target: end of year — Dec 31, 2026
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Scroll to explore
2nd
Year
Computer Science, LUT
BI
Focus
Business Intelligence
5/5
Databases
Database Systems
DAX
Power BI
Dashboards & Reports
B.Sc.
Thesis
Open-Source Integration
About Me
Student, builder & data enthusiast
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Data & Decisions First
My core passion lies in Business Intelligence and data analytics — extracting insights from raw data with tools like Power BI, DAX, Power Query, SQL, and Excel to drive smarter decision-making. Every dataset tells a story; I make sure stakeholders hear it.
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Beyond the Spreadsheet
Outside of data work, I play ice hockey, hit the gym, and build full-stack web applications. My goal is to become a top-tier analytics professional — bridging the gap between technical depth and strategic business impact.
Projects
Ideas put into practice
From BI dashboards and data pipelines to full-stack applications — combining analytical thinking with hands-on engineering.
01 · Project
Power BI Dashboards
Business Intelligence & Reporting
Self-taught via YouTube and hands-on practice. Built interactive dashboards with DAX measures, Power Query transformations, KPI cards, slicers, and drill-through pages for executive-level reporting.
Power BIDAXPower QueryData ModelingKPI
02 · Project
B.Sc. Thesis — Open-Source Integration Architecture
Data Analytics for SMEs
Bachelor's thesis exploring open-source integration architecture for small and medium-sized enterprise data analytics. Covers data pipelines, ETL processes, and scalable BI solutions for resource-constrained organisations.
ResearchETLOpen SourceData PipelinesSME Analytics
03 · Project
SQL + Data Analytics
Business Analytics Dashboard
Cleaned raw data using SQL views, corrected data types and relationships, then built interactive reports with KPI cards and slicers — turning messy datasets into clear, decision-ready insights.
SQLPower BIData ModelingKPIPostgreSQL
04 · Project
Advanced Excel & Reporting
Data Analysis & Automation
Proficient in pivot tables, VLOOKUP/XLOOKUP, conditional formatting, dynamic charts, and VBA macros. Used for financial modelling, trend analysis, and operational reporting workflows.
ExcelPivot TablesVBAFinancial ModelingAutomation
05 · Project
Leikkitsemppari
Full-Stack Web Application
Digital assistant for early childhood educators: dynamic grid layout, drag & drop activities, Supabase Row Level Security per teacher, and history-driven reporting — shipped as a production application.
SupabaseRLSDrag & DropUXReact
View Project06 · Project
Lidl PLU Analytics
Concept — Checkout Optimisation
A concept born from real cashier experience: settlement-time reports that surface frequently-checked PLU codes and a pop-up helper for weekly new products — faster, more accurate customer service.
Requirements AnalysisDomain ExpertiseConceptProcess Optimisation
Skills
Technologies, all in orbit
40+
Skills
Power BIDAXPower QueryExcelSQLPostgreSQLData ModelingETLPythonJavaScriptTypeScriptReactNode.jsViteHTMLCSSSupabaseFirebase
Power BIDAXPower QueryExcelSQLPostgreSQLData ModelingETLPythonJavaScriptTypeScriptReactNode.jsVitePower BIDAXPower QueryExcelSQLPostgreSQLData ModelingETLPythonJavaScriptTypeScriptReactNode.jsVite
HTMLCSSSupabaseFirebaseGoogle CloudCloudflareREST APIGitLinuxJavaPivot TablesKPI DashboardsData VisualizationBusiness IntelligenceHTMLCSSSupabaseFirebaseGoogle CloudCloudflareREST APIGitLinuxJavaPivot TablesKPI DashboardsData VisualizationBusiness Intelligence
Decision MakingProblem SolvingSolution-OrientedAnalytical ThinkingProcess OptimisationTeamworkSelf-LearnerEntrepreneurialFinnishEnglishCMongoDBDecision MakingProblem SolvingSolution-OrientedAnalytical ThinkingProcess OptimisationTeamworkSelf-LearnerEntrepreneurialFinnishEnglishCMongoDB
Experience & Education
The journey to this point
Work Experience
Sales Associate, Lidl — Since 2019
Experienced in high-volume cashier operations, managing transactions with precision and delivering excellent customer service under pressure. Strong expertise in merchandising, shelf management, and maintaining a seamless in-store experience.
Lidl Leiri, Lpr
5/2025 – present
Lidl Iso-Omena
6/2023 – 9/2023
Job shadowing
12/2019
LUT University · Lappeenranta, Finland
Let's Connect
Ready to turn data into decisions?
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