BMFreelancer profile translated to English.
Back to original languageAbout Barijohn
Are you looking to transform your data into a real decision-making lever?
I support companies in implementing, optimizing, and automating their data processes through two main areas of expertise:
- Data Integration and Processing (ETL Talend)
- Design and development of Talend jobs to collect, transform, and integrate your data (SQL Server, PostgreSQL, flat files, APIs, etc.).
- Implementation of reliable automated flows to ensure data quality and consistency.
- Performance optimization and process documentation.
- Analysis and Visualization (Power BI)
- Data modeling to meet business needs.
- Creation of interactive and dynamic dashboards.
- Monitoring of KPIs and key indicators for effective steering.
- Training and skills transfer to teams.
- My added value
I combine technical expertise (Talend, SQL, Power BI) with business understanding, allowing me to deliver adapted, clear, and sustainable solutions.
I am also accustomed to working in agile mode and communicating effectively with business and technical teams.
- Types of projects I work on
- Implementation of ETL flows with Talend.
- Migration or integration of multi-source data.
- Development of Power BI dashboards for financial, commercial, or operational steering.
- Optimization and automation of existing reporting.
- Consulting and support on data governance.
French
Native or bilingual
Remote only
Primarily works remotely
Experience
- LOZIKAGENCYData Analyst PowerBIE-COMMERCEJanuary 2024 - January 2025 (1 year)Tananarive, Madagascar- Design and development of interactive Power BI dashboards for performance monitoring and decision support.- Data modeling (star schema, snowflake) and creation of optimized models for analysis.- Writing advanced DAX measures and calculations to meet business needs.- Data integration from various sources (SQL Server, PostgreSQL, Excel, SAP, flat files, APIs).- Data cleaning, transformation, and quality improvement to ensure reporting reliability.- Collaboration with business teams to define key performance indicators (KPIs) and propose adapted solutions.- Technical and functional documentation of BI processes and user support in report adoption.Key Skills: Power BI, DAX, SQL, Data Modeling, Data Visualization, Data Quality, BI Reporting
- LOZIKAGENCYData Engineer Consultant/Data AnalystE-COMMERCEJanuary 2021 - January 2025 (4 years)Tananarive, Madagascar- Implementation and optimization of ETL flows with Talend Data Integration for data processing automation.- Design and development of Talend jobs for data integration from various sources (SQL Server, PostgreSQL, flat files).- Data cleaning, transformation, and quality improvement to ensure report reliability.- Development of interactive dashboards in Power BI for performance monitoring and decision support.- Collaboration with business teams to define needs and propose adapted solutions.- Technical and functional documentation of processing and reporting processes.- Key Skills: Talend ETL, SQL, Data Modeling, Power BI, Data Quality, BI Reporting.
Recommendations
Be the first to recommend Barijohn
Help this freelancer shine by sharing your experience working together.
These freelancer profiles also match your criteria
Agatha Frydrych
Backend Java Software Engineer
4.7
(3)
2
Baptiste Duhen
Fullstack developer
4.6
(4)
5
Amed Hamou
Senior Lead Developer
4
(2)
7
Audrey Champion
Web developer
4.3
(3)
4
Education
- PROFESSIONAL MASTER in Computer ScienceNational School of Informatics Madagascar2022- Développement logiciel (Java, C, Python, ABAP) - Bases de données relationnelles (SQL Server, PostgreSQL, Oracle) - Systèmes d’information et conception UML/Merise - Business Intelligence et Big Data (ETL, Data Warehouse, Power BI, Talend) - Réseaux et sécurité informatique - Méthodologies de gestion de projet (Agile/Scrum, DevOps, MPM, optimisation)