Hi, I’m
Samuel Minamioka
Data Engineer
St Helens
Summary
Experienced professional with 17+ years specializing in data engineering, business intelligence, data warehousing, data lakes, and ETL processes. Currently a Data Engineer at Acosta Europe, focusing on developing and maintaining data warehouses and data lakes using tools such as SQL Server, SSIS, SSAS, Azure Data Factory, Azure Analysis Service, and Databricks so Power BI consumes the data and insights be provided to the business.
Overview
15
years of professional experience
3
Certifications
3
Languages
Work History
Acosta Europe
Data Engineer
01.2020 - Current
Job overview
- Data Warehouse & Data Lake – Experience in building and maintaining Data Warehouses and Data Lakes to support business intelligence.
- SQL Server Development – Skilled in writing and optimizing T-SQL queries, stored procs, indexing , and efficient data processing in OLTP and OLAP environments.
- ETL Development with SSIS & Azure Data Factory – Experienced in designing, deploying, and managing ETL pipelines using SSIS and ADF for data ingestion, transformation, and orchestration.
- Big Data Processing with Databricks & Scala – Performed data engineering solutions in Databricks using Scala, focusing on distributed computing, data transformations, and Delta Lake optimization.
- Power BI Data Modelling & Dashboard Creation – Experienced in creating interactive and insightful dashboards in PBI, skills in data modeling, and Power Query to provide actionable business insights.
Royal Holloway
Data Integration Developer
04.2017 - 01.2020
Job overview
- Experience in developing ETL processes with MS SSIS by designing complex packages.
- Coding of complex queries in SQL Server and Oracle 11g by developing stored procs, functions, views, triggers, loops and index.
- Deep experience with debugging and troubleshooting SQL code.
- Upgraded and migrated all SSIS packages from 2008 version to 2016 to a brand new server. Stablished conventions, best practices for deployments such as creating and setting up Dev, UAT and Prod environments, project parameters and SSIS catalog database.
- Performed Data warehouse techniques such as staging area development, storing historical data in SCD format into fact and dimension tables. Also I created an ETL optimization where I implemented hash keys approaches in order to compare rows in a faster way and apply the change through SCD, many processes had their time processing dropped from hours to minutes.
- Developed ETL performance reports in SSRS in order to monitor the ETL executions and its quality.
- Strong experience with deployments through change management process.
- Experience with versioning control, deployment, change management control and tests.
Fredrickson International
BI Analyst
08.2015 - 11.2016
Job overview
- Company Overview: Created by the one of the biggest financial groups in Europe (Lowell Group/GFKL), Fredrickson is an industry leading Debt Collection Agency, operating in the UK.
- Developed and maintained reports in SSRS to support the stakeholders’ s decisions.
- Experience in developing calculations and KPIs in SQL.
- Data analyses experience. Improvement and correction of many legacy KPIs, reports or dashboards.
- Created a monitoring process to watch the performance of the KPIs and advice the customer in case of drop.
- Promoted the BI to the business(key-users) and integrated them better with our BI tools.
- Large experience with SQL development. Stored procedures, views, triggers, functions, loops, CTE and Cursors.
- Implemented and developed ETL to load stages, dimensions and fact tables using SSIS and SQL Server 2008.
- Created by the one of the biggest financial groups in Europe (Lowell Group/GFKL), Fredrickson is an industry leading Debt Collection Agency, operating in the UK.
Netshoes
Oracle Developer
04.2013 - 05.2015
Job overview
- Company Overview: Netshoes is the largest ecommerce of sporting materials in Latin America.
- Developed ETLs to support marketing campaigns such as recommendation for customers, segmentation of new or inactive customers, online visitors, products left in the basket, most wanted or most purchased products.
- Created a system in SQL/ Shell (Unix)/ Python which watched our critical ETLs. In case of any failure it advised us through a dashboard that I created with the tool OBIEE so we could troubleshoot immediately.
- Huge experience with PL/SQL. Writing procedures, views, functions, debugging code and troubleshooting.
- Experience Oracle Data Integrator (ODI) which I developed maps, packages and procedures.
- Experience in releasing applications through the Change Control Process where I coordinated the activities with the team for a successful transition from dev to the production environment.
- Performed requirement gathering, technical and functional specifications.
Dafiti
Data Warehouse Developer
04.2012 - 04.2013
Job overview
- Company Overview: Dafiti was the largest ecommerce of fashion clothes in Brazil.
- Performed in requirement gathering, technical and functional specifications.
- Designed multidimensional database creating fact and dimension tables using index and partitions.
- Performed in analysis, designs and implementation of applications in a data warehouse environment to meet specified requirements and specifications from the areas.
- Coded in PL/SQL procedures, views, triggers, looping, cursors, bulk collects and functions.
- Coded Shell Linux and SQL
- Designed and developed maps and transformations with the ETL tool Pentaho Data Integrator.
Credigy Financial Solutions
Business Intelligence / DW Analyst
02.2010 - 01.2012
Education
Information TechnologyAnhanguera University
Bachelor's Degree in Information Technology (IT) from IT
04.2001
Skills
ETL development
Certification
Databricks Fundamentals
Timeline
Databricks Fundamentals
03-2025
Microsoft Azure Data Fundamentals
07-2021
Microsoft Azure Fundamentals
06-2021
Data Engineer
Acosta Europe
01.2020 - Current
Data Integration Developer
Royal Holloway
04.2017 - 01.2020
BI Analyst
Fredrickson International
08.2015 - 11.2016
Oracle Developer
Netshoes
04.2013 - 05.2015
Data Warehouse Developer
Dafiti
04.2012 - 04.2013
Business Intelligence / DW Analyst
Credigy Financial Solutions
02.2010 - 01.2012
Information Technology
Bachelor's Degree in Information Technology (IT) from IT
04.2001
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