About Sebastian
Polish
Native or bilingual
English
Conversational
German
Native or bilingual
Experience
- -Development of a CRM system for the real estate industryJanuary 2025 - Today (1 year and 5 months)Conception and planning of the CRM architecture and main functionsDevelopment with Laravel for the implementation of system logic and backend functionalitiesImplementation of search and filter functions as well as integration of databases for efficient data storageDesign and optimization of the user interface with Blade and Tailwind CSS for a simple and user-friendly experienceDevelopment of security features to ensure data protection and data securityContinuous improvement of the system and expansion of functionalitieswww.propertycloudcrm.com
- EnergiewirtschaftSoftware EngineerENERGY AND UTILITIESOctober 2020 - December 2024 (4 years and 3 months)Leipzig, GermanyIn my job in the core department, I significantly contributed to the optimization of system processes. Among other things, I developed a system for managing cron jobs, where individual crons could be configured to block others until they were completed, thus avoiding resource bottlenecks and conflicts. Furthermore, I implemented a solution for the efficient repetition of failed events to ensure the reliability of data processing. I also worked on extending the core system, optimizing and expanding the GDPR module, as well as implementing a delay and blocker for API requests.
- EcommerceSenior Software DeveloperE-COMMERCEMay 2017 - September 2020 (3 years and 5 months)München, GermanyDevelopment of new features for several online shops. This included, among other things, the integration of the shop system's API into a native shopping app and the implementation of a CRM interface that enabled the onboarding of our customer cards. I also worked on an interface for connecting an external Typo3 system to the existing shops. Further tasks included the integration of payment service providers such as Amazon Pay and Przelewy 24, the implementation of a secure login system using FIDO USB dongles, and the development of a special login system for customer service.
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Education
- Diplom-Wirtschaftsinformatiker (FH)University of Wismar2010