Location
PolandRate
$30
/ per hour
Years of experience
7+About
As an experienced SQL developer, I specialize in crafting complex queries, stored procedures, and functions, with a strong focus on performance tuning and query optimization in big data environments. My expertise spans all phases of database programming, including data warehousing and ETL processes. Throughout my career, I have successfully implemented numerous projects, ensuring robust customer relations and the seamless execution of database solutions. My technical skill set includes a deep proficiency in technologies such as SQL Server, Snowflake, Python, PowerBI, and Hadoop, among others. Currently, as a SQL Developer at Nordea, I am part of the Environmental, Social, and Governance development team, where I architect, enhance, and optimize multi-terabyte data warehouses. My responsibilities include ETL processes from various sources like Snowflake and Hadoop, developing scalable analytical models, and optimizing queries for large-scale databases. Prior to this, I served as a Senior Implementation Specialist at Mastercard Processing S.A., where I led technically complex processing projects and managed the entire project lifecycle. My background also includes significant experience at Centrum Finansowe S.A., where I developed and optimized the database infrastructure for the debt collection process, ensuring efficient operational workflows and generating critical reports for executive management.Tech Stack
SQL Server, Confluence, DAX Studio, Git, Hadoop, Jira, Power BI, Python, Snowflake, SQL, Ssis, SSRSExperience
- Designed, enhanced, and optimized multi-terabyte data warehouses to support complex analytical needs, ensuring high performance and scalability.
- Managed ETL (Extract, Transform, Load) processes from diverse data sources, including Snowflake, Hadoop, and SQL Server, to ensure seamless data integration and processing.
- Specialized in performance tuning and optimization of complex queries in big data environments, improving efficiency and reducing processing times.
- Spearheaded the execution of technically complex processing implementation projects, managing all phases of the project lifecycle from planning to delivery.
- Developed and managed sophisticated database infrastructures, particularly in the context of debt collection processes, to enhance operational workflows.
- Generated detailed reports for executive management, facilitating informed decision-making through precise data analysis and reporting.
- Developed scalable and tabular analytical models tailored for end-user applications, leveraging tools like PowerBI and DAX for advanced data analysis.
Employment history
SQL Developer, Nordea
March 2024 - Present
- Architected, enhanced, and optimized multi-terabyte data warehouses.
- Developed ETL processes from various data sources including Snowflake, Hadoop, and SQL Server.
- Created proprietary, scalable, and tabular analytical models for end-user applications.
- Performed performance tuning and query optimization for large-scale big data databases.
- Collaborated with a team of experts on data integration and analytical solutions.
- Utilized tools like Python, PowerBI, and DAX for advanced data analysis.
Senior Implementation Specialist, Mastercard Processing S.A.
September 2023 - March 2024
- Led the execution of technically complex processing implementation projects.
- Managed multiple customer implementation projects concurrently.
- Oversaw all phases of the project lifecycle, ensuring precise and timely delivery.
- Utilized tools like PL/SQL, Linux, Git, and GitLab for project development and deployment.
SQL Server Developer in IT Department, Centrum Finansowe S.A.
June 2017 - August 2023
- Developed and managed database infrastructure for the debt collection process.
- Created proprietary solutions to enhance operational workflows.
- Optimized complex queries and managed MS SQL Server infrastructure.
- Generated detailed reports for executive management to support decision-making.
- Utilized tools like SQL Server, SSIS, SSAS, and SSRS for database development and reporting.
Specialist in Valuation and Analysis Department, Centrum Finansowe S.A.
November 2016 - June 2017
- Conducted valuation and analysis of financial data.
- Supported the IT department with data analysis tasks.
- Collaborated with other departments to ensure accurate financial reporting.
Office Worker/Senior Office Worker in Retail Debt Collection Department, Centrum Finansowe S.A.
January 2012 - October 2016
- Assisted in the debt collection process through data management and reporting.
- Supported senior management with administrative tasks related to debt collection.
- Maintained and updated debt collection databases.
Education history
Uniwersytet Warszawski
2017 - 2018
Postgraduate Studies, Economical data analysis in Microsoft Excel and VBAprogramming language
Szkoła Główna Gospodarstwa Wiejskiego w Warszawie
2015 - 2016
Postgraduate Studies, Information Systems and Data Analysis
Szkoła Główna Gospodarstwa Wiejskiego w Warszawie
2010 - 2012
Masters studies, economics
Szkoła Główna Gospodarstwa Wiejskiego w Warszawie
2006 -2010
Bachelor studies, economics
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"DevsData reached out to us, as we've been looking to grow our engineering team in Europe and Poland. Communicating efficiently and professionally, DevsData made a strong impression with their understanding of the recruitment challenges we were facing."
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"Tom and his team showed great dedication to us as client and allowed wellbee to launch an Alpha stage of our online therapy product in under 1 month from absolute scratch. I need to congratulate them on the very good UX and UI design and good communication skills of the whole team."
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"Out of all the vendors we work with, DevsData clearly stands out. The quality of developers they deliver is beyond what we've received from any other vendor, and they've been able to send profile recommendations very quickly. I'm happy to be their reference for other companies from Israel and talk about their recruitment abilities and what they delivered for us - we eventually signed over 19 engineers from DevsData. I'm extremely satisfied with this recruitment process."
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Ex-Tesla Engineer,
Mentor at YCombinator
Tailored recruitment process, trusted market expertise.
“DevsData reached out to us, as we’ve been looking to grow our engineering team in Europe and Poland. Communicating efficiently and professionally, DevsData made a strong impression with their understanding of the recruitment challenges we were facing. They designed a tailored recruitment process for our needs. I was impressed with the technical depth of their approach.”
Karim Butt
Co-Founder & CTO at GlossGenius, Inc.
Outstanding vendor, 21 engineers hired.
“Out of all the vendors we work with, DevsData clearly stands out. The quality of developers they deliver is beyond what we've received from any other vendor, and they've been able to send profile recommendations very quickly. I'm happy to be their reference for other companies from Israel and talk about their recruitment abilities and what they delivered for us.”
Ran Eyal
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ZIM Integrated
Shipping Services Ltd.
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Partner & Executive VP of Verus,
Financial LLC, Investor,
& Serial Entrepreneur
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