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Location

Poland

Rate

$45  / per hour

Years of experience

19+

About

I am an experienced Database Architect and Developer with a strong background in database architecture, design, development, and business analysis, spanning over 15 years. My expertise includes MS SQL Server, T-SQL coding, SSIS, and automation scripting with Python and Powershell. I am proficient in creating robust database structures and application logic, implementing business processes, and improving existing tools and solutions. Throughout my career, I have demonstrated my ability to work effectively in international business environments, including remote teams. I excel in communication, bridging the gap between business and technical stakeholders, and resolving ad hoc issues with persistence and diligence. I hold a Master’s degree in Computer Science in Economics from the Warsaw School of Economics and have completed several advanced courses in Python programming and Tableau. My professional journey has taken me through roles at Roche, Atos, Bravura Solutions, StepStone, PTE Bankowy SA, and Bosch and Siemens Home Appliances Group, where I have consistently delivered high-quality database solutions. In my free time, I enjoy sailing, meditation, literature, and bushcraft, which help me stay balanced and motivated in both my personal and professional life.

Tech Stack

Database, Database Management System (DBMS), Microsoft Excel, Powershell, Python, SQL Server, Ssis, T-SQL, Tableau

Experience

  • Contributed to the development of application logic to ensure seamless operation and user interaction.
  • Conducted business requirements gathering and engaged in client consultations to understand project needs thoroughly.
  • Provided comprehensive support, including on-call assistance, for clients' production and testing environments.
  • Conducted problem-solving, troubleshooting, and performance tuning to ensure optimal database performance.
  • Designed business processes and flows within applications to optimize functionality and user experience.
  • Developed database structures to ensure efficient data storage and retrieval.
  • Implemented database development tasks including stored procedures, functions, and queries to support application functionalities.

Employment history

Database Architect and Developer, Roche January 2018 - Present

Applications and databases design:
– Business requirements gathering, client consultations
– Design of business processes and flows in applications
– Design of the database structures
– Databases development (stored procedures, functions, queries)
– Development of application logic
– Improving existing processes, tools and solutions
– Advising in terms of development directions, preferred solutions
– Writing automation scripts using Python
– Preparing technical and functional documentation
Used technologies: SQL Server 2014, SSIS, Tableau, VBA, Python

Senior Database Administrator, Atos June 2017 - December 2017

– Support (including on-call support) for clients’ production and testing environments,
– Problem-solving, troubleshooting and performance tuning
– Designing and implementing disaster recovery plans to ensure business continuity.
– Working closely with development teams to provide database support and guidance, ensuring seamless integration of new features.
Used technologies: SQL SERVER 2000/2005/2008/2012/2016, TSQL, SSRS, SSIS, POWERSHELL, ITIL

Database Administrator, Bravura Solutions January 2013 - May 2017

– Production support for core company transaction system, including troubleshooting, performance tuning, designing and maintaining disaster recovery, maintenance of SQL servers, participating in application upgrades.
– Implementing security measures to protect sensitive data and ensure compliance with industry standards.
– Participating in the planning and execution of application upgrades to ensure minimal downtime and data integrity.
Used technologies: SQL SERVER 2000/2005/2008, TSQL, SSRS, POWERSHELL, ITIL

Database developer and administrator, StepStone May 2012 - December 2012

– Development of numerous ad hoc reports for business.
– Advising role towards development teams in terms of queries and other database usage in application.
– Identifying and implementing improvements to enhance database performance and efficiency.
– Integrating data from various sources to support business intelligence and analytics initiatives.
Used technologies: SQL SERVER 2005/2008, TSQL

Specialist For Computer Science, PTE Bankowy SA August 2008 - February 2012

– Developing application for evaluating pension fund’s assets (TSQL stored procedures and functions) including additional tools and ad hoc reports.
– Creating additional tools and ad hoc reports to support business operations.
– Managing SQL Server databases, ensuring optimal performance and reliability.
– Integrating various systems and databases to streamline business processes and improve data accessibility.
Used technologies: SQL SERVER 2005, TSQL, VBA, MS EXCEL, MS ACCESS

Database developer, Bosch and Siemens Home Appliances Group (BSH) March 2005 - July 2008

– Design and implementation of new functionalities within existing tools and databases for workshop department.
– Maintaining and optimizing MS Access and SQL Server databases to ensure efficient operation.
– Providing support to users for database-related issues and enhancements.
– Conducting data analysis to support decision-making processes within the department.
Used technologies: MS Access, VBA, SQL Server 2000

Education history

Warsaw School of Economics 2003 - 2008 Warsaw School of Economics
Master's degree, Computer Science in Economics
Grade: very good
Tom Potanski

Tom Potanski Founding Partner
DevsData LLC

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