Data · Automation · Insight
I'm Marlon Mejía, an Analytics Engineer (Data Analyst | Data Engineer) based in Warsaw. I build reliable pipelines, dashboards, and intelligent workflows that move teams from manual work to better decisions.
Now beginningMaster's in Data Science & Business Analytics · University of Warsaw
01 — Profile
My strongest work happens when the answer is not simply “build a dashboard.”
I look at the full path: how information is created, where it breaks, what can be automated, and how the final insight should reach the people who need it. That perspective comes from hands-on experience across analytics, data warehousing, ETL, AI evaluation, and geospatial solutions.
I'm naturally curious and self-directed. I've moved across different data disciplines by learning the tools deeply, testing ideas, reading documentation, and improving processes before someone has to ask.
02 — Current chapter
Master's studies · Starting
University of Warsaw
I'm beginning the next stage of my academic journey in Warsaw—deepening the connection between data science, advanced analytics, and the business decisions these technologies are meant to improve.
03 — Professional experience
Experience across banking and financial services—from application development and enterprise ETL to BI, GIS, automation, and Advanced Analytics leadership.
Inversiones La Paz (ILP)
Banco Atlántida
INFATLAN
BAC Credomatic
04 — Expertise
I combine technical depth with a practical understanding of the business process behind the data.
Decision-ready dashboards, clear KPI frameworks, and analytical models that connect business questions to reliable answers.
Clean, documented data flows—from raw sources to trusted analytical layers—built with quality and maintainability in mind.
Practical automations that remove repetitive work, integrate systems, and keep people focused on higher-value decisions.
Responsible AI evaluation and location intelligence that add a deeper layer of context to operational and strategic problems.
05 — Credentials
A focused selection of the training that supports my work across analytics, automation, and international teams.
Certifications & courses
Udemy
Foreign Language Centre · Warsaw University of Technology
KNIME
Languages
06 — How I work
Good data work is not only technically correct. It needs to be trusted, understood, and useful after handoff.
Translate
Connect
Improve
07 — Professional endorsement
Independent feedback from the manager who supervised my most recent work in Data & Analytics.
Marlon consistently demonstrated strong analytical skills, a proactive attitude, and a high capacity for problem-solving.
08 — Selected work
Each case study goes beyond the final screen—showing the source data, architecture, quality controls, modeling decisions, and business purpose.
One project, two disciplines: an end-to-end Azure pipeline that turns official Polish data into validated analytical models, a Power BI report, and an ArcGIS view of foreign population across Poland.
End-to-end solution completeAzure · Power BI · ArcGIS
A working conversational AI automation that receives WhatsApp messages, validates incoming events, uses Google Gemini to generate contextual responses, maintains session memory, and sends replies automatically.
Persistent database memory for long-term conversation context.
09 — Contact
I'm open to data, analytics, and automation opportunities where curiosity, ownership, and practical problem-solving matter.
