JG

Jakub Gulewski

verfügbar

Letztes Update: 05.03.2024

BI Developer

Abschluss: nicht angegeben
Stunden-/Tagessatz: anzeigen
Sprachkenntnisse: deutsch (Grundkenntnisse) | englisch (Muttersprache) | polnisch (Muttersprache)

Dateianlagen

CV-Jakub-Gulewski-Full_050324.docx

Skills

  • Design complex processes for a billion rows’ solutions.
  • Microsoft SQL Server, SSIS, SSRS, SSAS, T-SQL 2005, 2008 R2, 2012, 2014, 2016, 2017, 2019
  • MySQL 4.x & 5.x., Oracle 11g and PostgreSQL 8.2
  • Optimizing T-SQL, index, users, and security strategies, user management
  • Design and normalization of DB schema, create indexing, constraints, jobs/ schedules, maintain replication, DB migration, DB/ table partitioning, error tracking and solving and user permission management.
  • Produce KPIs and reports (SSRS, Power BI) as requested by the business according to SLA.
  • Implement operational KPIs with data quality and error handling
  • Work with multidimensional and tabular cubes/ MDX, DAX. SSAS: 2008, 2014, 2016, 2017, 2019
  • Experienced with Kimball and Inmon Data Warehouse models, Slow Changing Dimensions
  • Implement Data Vault 1.0, 2.0 methodology
  • Data cleansing, ETL/ ELT process, and data quality.
  • Red Gate SQL tools, source control with Microsoft Team Foundation Framework and GitHub Continuous Integration TeamCity
  • Custom reports, data longitudinal analysis, data profiling, exploring trends and patterns
  • Working with spatial data in MapInfo and ArcGIS, Surfer, etc.
  • Experienced user of MS Excel, DAX, Power Queries, and power query, VBA. 
  • General knowledge of VBA, HTML, XML, JSON, and .Net, R, Python
  • Unit test/ Test Driven Development
  • Data Modelling from conceptual to the physical data model

Projekthistorie

02/2022 - bis jetzt
Business Intelligence Specialist / Consultant
Credit Suisse (Banken und Finanzdienstleistungen, 1000-5000 Mitarbeiter)

Build and support existing custom automated ETL solutions. Work with various business departments on T-SQL delivery.


06/2021 - 10/2021
Power BI Consultant/ Developer
Zurich Insurance (Banken und Finanzdienstleistungen, 500-1000 Mitarbeiter)

Help client to review the current data model and advise on process optimization. Recommend redesigning process, build PoC for a new optimized process for volume and smooth user experience.


01/2021 - 02/2021
Power BI Consultant/ Developer
BASF (Sonstiges, 1000-5000 Mitarbeiter)

I build and implement reports with the Power BI. Working closely with business advising best approaches, methods and code optimization to meet strict SLA times for reports. Cooperate with other teams to reach the most streamlined, efficient data delivery process.


05/2019 - 12/2019
Integration Developer
Dentsply Sirona (Pharma und Medizintechnik, 500-1000 Mitarbeiter)

I design and develop new incremental ETL processes. Automated, incremental data integration between data warehouse and  Salesforce.


01/2019 - 02/2019
Power BI Consultant
Global Brand Group (Konsumgüter und Handel, 500-1000 Mitarbeiter)

I advised the customer on rebuilding current processes and presented a few PoCs for new data solutions covering: ETL, incremental build, T-SQL, Power BI and AX 2012.


02/2018 - 07/2018
SQL Developer
Deutsche Bank (Banken und Finanzdienstleistungen, 1000-5000 Mitarbeiter)

I worked on back-end OLTP development for the internal application. Work closely with business on collecting and understanding requirements.


01/2018 - 02/2018
Business Intelligence Developer / Consultant
HCA Healthcare UK (Pharma und Medizintechnik, 1000-5000 Mitarbeiter)

Help business with current BAU tasks and speed up the development of backlog tasks. Closely cooperate with business owners to understand their needs and requirements. Involved with the full development life cycle.  


11/2017 - 12/2017
Business Intelligence Consultant / Developer
Chanel (Konsumgüter und Handel, 500-1000 Mitarbeiter)

Help client with the current design of the DWH and reports. Build PoC for new DWH and suggest best practices, improvements and optimisations to the processes.  Work closely with the business to understand their needs and expectations.


07/2017 - 11/2017
Business Intelligence, Lead Report Developer
ASOS (Konsumgüter und Handel, 1000-5000 Mitarbeiter)

I work on the implementation report suit for AX 365 for the accounting and finance department based on SSRS and Power BI. I was involved with collecting business requirements, understanding rules and full development lifecycle.   


03/2017 - 06/2017
Business Intelligence Report Developer
FieldFisher (Banken und Finanzdienstleistungen, 500-1000 Mitarbeiter)

Design and develop the Power BI and SSRS reports and dashboards for AX 365 data platform. Build objects in the AOS Application Object Service. Work closely with the business on requirements specification and testing.


01/2017 - 02/2017
Business Intelligence Developer
RSSB (Internet und Informationstechnologie, 500-1000 Mitarbeiter)

Create an ETL solution to bring multiple data into a customer single view. Clean data and prepare new obsolete datasets for the CRM AX NAV.


08/2016 - 11/2016
SQL/ Report Developer / Consultant
Gala Coral (Internet und Informationstechnologie, 1000-5000 Mitarbeiter)

Develop ETL processes for the new Kimball data warehouse. Data migration to SQL Server 2016, data integration with the Salesforce CRM and building custom operation reports.


01/2016 - 04/2016
Business Intelligence Developer / Consultant
Ciber (Internet und Informationstechnologie, 500-1000 Mitarbeiter)

Build an ETL solution which automates the data feed of the AX Dynamics 2012 CRM and data integration with the Azure cloud.


10/2015 - 12/2015
Business Intelligence Developer / Consultant
Generali (Banken und Finanzdienstleistungen, 1000-5000 Mitarbeiter)

Work closely with the client to implement changes in current data feed processes for one of the subsystems and data warehouse.


07/2015 - 10/2015
Business Intelligence Developer/Consultant
PIAS (Medien und Verlage, 500-1000 Mitarbeiter)

Design and build a new ETL feed for the Data Warehouse, collecting information about artists and royalties fees. Delivering a fully working BI solution based on SSIS, C# and T-SQL. Close align with business on solution delivery.


05/2015 - 06/2015
ETL/ Report Developer/Consultant
NBC Universal (Medien und Verlage, 1000-5000 Mitarbeiter)

Delivering business intelligence enhances to internal clients and supports current BAU processes.

12/2014 - 04/2015
Solution Architect / T-SQL Developer
WorldRemit (Banken und Finanzdienstleistungen, 250-500 Mitarbeiter)

Work closely with business on the delivery PoC for the new data architecture, exploring PAAS Azure and SQL Server 2012 capabilities.

01/2013 - 11/2014
Senior BI Developer
Net-a-Porter (Konsumgüter und Handel, 1000-5000 Mitarbeiter)

Delivering solutions and PoCs for the data warehouse (DWH). I was involved with the full project/ code lifecycle, cooperating with various business teams: accounting, operations, marketing and procurement. Responsible for the design, development, test and deployment of an SSIS, T-SQL and SSRS code. Often I had to act as Developer DBA and work on T-SQL and process optimization.


Reisebereitschaft

Verfügbar in den Ländern Deutschland, Österreich, Schweiz und Polen
Profilbild von Jakub Gulewski BI Developer aus FrankfurtamMain BI Developer
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