Jakub C.

Jakub C.

Business Intelligence Developer

Poland
Trusted member since 2025
7 years of experience

In recent years, Jakub has focused primarily on the Microsoft data stack, with Power BI as his go-to tool for business intelligence development. He also brings hands-on experience with other leading BI platforms such as Tableau and DOMO, and is proficient with ETL tools including Alteryx—making him adaptable across technology environments.

Jakub has led end-to-end BI projects in both on-premises and cloud-based architectures. He enjoys solving challenging data delivery problems and has developed a solid foundation in data engineering processes as a result. Known for his ability to communicate effectively with both internal stakeholders and external clients, Jakub delivers clear, actionable insights that drive business performance.

Main expertise

SQLSQL4 years
ETLETL4 years
Microsoft Power BIMicrosoft Power BI7 years
ProductProduct5 years
5+

Experience5

Network Rail

Senior Power BI Developer

Network Rail
Transportation and Logistics
Jan 2025 · 1y 9m
  • Delivered three end-to-end Power BI projects in a short-term independent role, enhancing reporting and dashboard efficiency for infrastructure operations.
  • Collaborated with UX/UI designers and QA engineers to ensure user-friendly, visually consistent BI solutions.
  • Developed optimized data models in Power BI and implemented automated data refresh pipelines to support real-time insights.
MSSQLMSSQL
Microsoft Power BIMicrosoft Power BI
Microsoft Power AutomateMicrosoft Power Automate

Senior Power BI Developer

PwC Advisory
Financial Technology (FinTech)
Jun 2022 - Jan 2025 · 2y 7m
  • Served as a tech lead across multiple Power BI engagements, advised on architecture, and oversaw delivery in both on-premises and cloud environments.
  • Addressed complex data delivery challenges across a variety of domains, including finance and digital transformation.
  • Utilized Azure-native tools such as Azure Synapse, Azure Data Factory (ADF), and the Power Platform to build end-to-end BI pipelines.
  • Integrated Power BI reports into enterprise systems like Dynamics 365 and delivered strategic dashboards to executive stakeholders.
SQLSQL
AzureAzure
Azure Blob storageAzure Blob storage
Microsoft Power BIMicrosoft Power BI
Azure Data FactoryAzure Data Factory
10+
Mastercard

Power BI Developer

Mastercard
Financial Technology (FinTech)
Jun 2021 - May 2022 · 11m
  • Developed Power BI dashboards to support internal financial and fraud detection teams.
  • Integrated real-time system logs and automated reporting using Azure and Python.
  • Served as the Jira administrator for the reporting team, promoting collaboration and effective task tracking.
  • Utilized Kibana and Grafana for cross-functional monitoring and data visualization.
MySQLMySQL
MSSQLMSSQL
T-SQLT-SQL
PythonPython
AzureAzure
7+
Accenture

2nd level Support Specialist

Accenture
Automotive
Mar 2020 - Jul 2021 · 1y 4m
  • Supported BMW’s remote vehicle systems by analyzing telemetry and system logs.
  • Developed automated fixes and reporting solutions tailored to BMW’s global support needs.
  • Created Tableau and Excel dashboards for internal stakeholders and utilized Power BI when required.
  • Collaborated with German-speaking teams to ensure timely technical resolution.
PostgreSQLPostgreSQL
KibanaKibana
JiraJira
VBAVBA
TableauTableau
BMC Helix ITSMBMC Helix ITSM
H&M

Senior Business Support

H&M
Fashion and Apparel
Jan 2018 - Dec 2019 · 1y 11m

H&M Group operates over 4,000 fashion retail stores in 70 countries, providing fast fashion and eCommerce.

  • Served as second-line support at the Customer Service HQ, coordinating with logistics and finance.

  • Participated in cross-team BI initiatives, generating cost-saving reports and error detection tools.

  • Identified issues in SAP Financial modules that led to corrections and reduced operational costs.

  • Developed and maintained dashboards in Power BI and facilitated integration with Salesforce.

Microsoft Power BIMicrosoft Power BI
SAP ABAPSAP ABAP
SalesforceSalesforce
SAPSAP
SAP Customer ExperienceSAP Customer Experience

Engineering excellence

All Business Intelligence Developers who have applied to Proxify are scored from 0 to 300 on engineering excellence, one of the five parameters we evaluate. This score reflects engineering excellence only, based on interviews, take-home assignments, live coding sessions, and/or on-the-job performance reviews. The curve shows how all evaluated Business Intelligence Developers are distributed across that range, where our acceptance threshold for this parameter sits, and where Jakub stands.

050100150200250300Engineering excellence scoreShare of engineersmedianmeanProxifyacceptancethreshold
Jakub
Score 204 · Top 6% of engineers

Education

ŁU
Łazarski University
Economics2014 - 2017

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