Marlon Josue Mejia Monterroso

Marlon Josue Mejia Monterroso

Data Analyst
Poland
Spanish, English

About Me

Results-driven Data Analyst with over 3 years of experience optimizing data processes and enhancing operational efficiency. Expert in leveraging Python, KNIME, and Power BI to build predictive models and deliver actionab…

Experience

Data Analyst

INVERSIONES LA PAZ (ILP)
Jan 2025 - Sep 2025 · 8 months

Automated manual documentation using Python scripts and Power Automate, increasing team efficiency.
Designed AI-driven documentation workflows through prompts in Power Automate.
Led the definition of structure and work methodology for the Machine Learning team regarding transitions in KNIME HUB (QA and PRD).
Developed and researched a graph-based model to detect and predict fraud networks.
Created alert workflows in KNIME 5.4.1 for early error detection in data models.
Programmed and optimized workflows in KNIME SERVER 4.7.5, ensuring accurate execution of critical processes.
Managed and deployed workflows in KNIME HUB 5.4.1, with QA and PRD passes, guaranteeing operational quality and continuity.
Audited Machine Learning workflows in KNIME APP and KNIME HUB to ensure proper model creation and validation.
Automated processes that significantly reduced manual and repetitive work in Azure Synapse models with Analysis Services.
Led the migration from KNIME SERVER to KNIME HUB, improving collaboration and access to shared workflows.
Coordinated and administered workflows during the KNIME migration, ensuring a smooth and efficient transition.
Built monitoring reports in Power BI, enabling visual analysis of key metrics in models and workflows.
Conducted trend and KPI analysis for sales monitoring, applying statistical calculations to support decision-making.
Implemented process automations with KNIME, Python, Anaconda, and Power BI, achieving a substantial reduction in hours spent on monitoring, manual documentation, and sales validation.
Led the creation of ILP’s first Advanced Analytics team, serving as auditor for the development of AI and Machine Learning models across all group companies.

Data Analyst

INVERSIONES LA PAZ (ILP) · Tegucigalpa, Honduras
Jan 2025 - Sep 2025 · 8 months

Automated manual documentation using Python scripts and Power Automate, increasing team efficiency., Designed AI-driven documentation workflows through prompts in Power Automate., Led the definition of structure and work methodology for the Machine Learning team regarding transitions in KNIME HUB (QA and PRD)., Developed and researched a graph-based model to detect and predict fraud networks., Created alert workflows in KNIME 5.4.1 for early error detection in data models., Programmed and optimized workflows in KNIME SERVER 4.7.5, ensuring accurate execution of critical processes., Managed and deployed workflows in KNIME HUB 5.4.1, with QA and PRD passes, guaranteeing operational quality and continuity., Audited Machine Learning workflows in KNIME APP and KNIME HUB to ensure proper model creation and validation., Automated processes that significantly reduced manual and repetitive work in Azure Synapse models with Analysis Services., Led the migration from KNIME SERVER to KNIME HUB, improving collaboration and access to shared workflows., Coordinated and administered workflows during the KNIME migration, ensuring a smooth and efficient transition., Built monitoring reports in Power BI, enabling visual analysis of key metrics in models and workflows., Conducted trend and KPI analysis for sales monitoring, applying statistical calculations to support decision-making., Implemented process automations with KNIME, Python, Anaconda, and Power BI, achieving a substantial reduction in hours spent on monitoring, manual documentation, and sales validation., Led the creation of ILP’s first Advanced Analytics team, serving as auditor for the development of AI and Machine Learning models across all group companies.

Business intelligence specialist

BANCO ATLATIDA
Nov 2023 - Jan 2025 · 1 year 2 months

Performed advanced geospatial data analysis to identify patterns and trends.
Created and manipulated thematic maps using ArcGIS PRO and ArcGIS Online.
Developed spatial models for urban planning and resource management.
Built Experiences and Dashboards focused on geolocation to enhance information visualization.
Trained teams in ETL flow creation and optimization, improving efficiency by 25%.
Monitored jobs, load statistics, and error reviews.
Implemented predictive models with linear regression for balance prediction, achieving 80% accuracy.
Managed and utilized cloud databases (SAP HANA Cloud and SAP Data Lake).

Business intelligence specialist

BANCO ATLANTIDA · Tegucigalpa, Honduras
Nov 2023 - Jan 2025 · 1 year 2 months

Performed advanced geospatial data analysis to identify patterns and trends., Created and manipulated thematic maps using ArcGIS PRO and ArcGIS Online., Developed spatial models for urban planning and resource management., Built Experiences and Dashboards focused on geolocation to enhance information visualization., Trained teams in ETL flow creation and optimization, improving efficiency by 25%., Monitored jobs, load statistics, and error reviews., Implemented predictive models with linear regression for balance prediction, achieving 80% accuracy., Managed and utilized cloud databases (SAP HANA Cloud and SAP Data Lake).

Data Warehouse Executive

INFATLAN
Aug 2022 - Nov 2023 · 1 year 3 months

Migrated systems from AS400 to SAP, optimizing data load flows and reducing processing times by 30%.
Enhanced data load workflows for regulatory compliance.
Built ETL workflows for the Anti-Money Laundering department, automating and optimizing processes, reducing load time by 20%.
Optimized legacy processes, reducing execution times using modern tool components.
Managed product data for a financial application, improving quality and accuracy for client decision-making.
Led the migration of platforms and data repositories, ensuring operational continuity and improved security and load performance.
Managed DEV, QA, and PRD environments.
Created repositories, user roles, and permissions.
Data validation and cleansing.
Built both automated and manual ETL processes.
Programmed and optimized automated jobs at both component and query levels.
Integrated diverse data sources (Excel, CSV, RESTful/JSON APIs).
Designed and created optimized tables for regulatory reporting, improving data accessibility and efficiency.
Automated report generation for credit portfolio and other critical areas, significantly reducing manual effort and improving accuracy.

Data Warehouse Executive

INFATLAN · Tegucigalpa, Honduras
Aug 2022 - Nov 2023 · 1 year 3 months

Migrated systems from AS400 to SAP, optimizing data load flows and reducing processing times by 30%., Enhanced data load workflows for regulatory compliance., Built ETL workflows for the Anti-Money Laundering department, automating and optimizing processes, reducing load time by 20%., Optimized legacy processes, reducing execution times using modern tool components., Managed product data for a financial application, improving quality and accuracy for client decision-making., Led the migration of platforms and data repositories, ensuring operational continuity and improved security and load performance., Managed DEV, QA, and PRD environments., Created repositories, user roles, and permissions., Data validation and cleansing., Built both automated and manual ETL processes., Programmed and optimized automated jobs at both component and query levels., Integrated diverse data sources (Excel, CSV, RESTful/JSON APIs)., Designed and created optimized tables for regulatory reporting, improving data accessibility and efficiency., Automated report generation for credit portfolio and other critical areas, significantly reducing manual effort and improving accuracy.

Certifications

Basic Proficiency in KNIME Analytics Platform(Data science with KNIME Software)

KNIME · Switzerland · 2025

Business Intelligence with Power BI and SQL Server

Udemy · Tegucigalpa, Honduras · 2020

Skills

Analytics Data Analysis Professional Data Mining Microsoft Excel MySQL Reporting SQL Server Sybase Problem Solving Data Analysis Communication Data Representation Microsoft Azure SAP HANA Visual Studio Data Visualization Data Analysis Skills Power BI Tableau Python NumPy Pandas Matplotlib Statsmodels Scikit-learn Predictive modeling KNIME APP KNIME HUB Agile methodologies Scrum Kanban ArcGIS PRO ArcGIS Online ETL Linear regression
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