Patryk Siemiński

E-commerce & Automotive - Bringing the electric cars e-com to another level! - Led the transition of infrastructure to GCP and Encore.dev as part of the Platform Team. Reduced time dedicated for infrastructure management & product delivery by over 90% thanks to the automated processes. - Automated and simplified cars publishing process, lowering average time to publish by 69% for Carla online store, 86% for Blocket ads with 71% for total time saved. In addition, highly reducing error rate and update time.

Airport Awareness project leadership - Oversaw the product discovery phase, planned and delivered a subproject for the airport awareness system app. - Led the project team, ensured obstacles-free work and mentored less experienced engineers. - Gathered requirements and designed the integration of new backend service into existing distributed system. - Developed and implemented a new module in React and React Native apps with introduction of hooks API.

E-commerce - Led the backend implementation of the new discounts and campaigns module with kick-off during the 2020 Black Friday campaign, which led to time savings of marketing and pricing departments and conversion growth. - Refactored and improved functionality to match complex combinations of bundled products with customers motorbikes, leading to better conversions and a lower number of returns caused by a mismatch of bought parts. - Mentored new back-end engineers, worked together by pair programming.

Intellectual property - Accelerated growth of functionalities in company products during the intensive period in the startup's lifecycle, which led to obtaining many new valuable customers and enterprise subscriptions. - Developed new features and maintained the existing codebase in multiple microservices of an intellectual property app. - Refactored the codebase by introducing good practices like TDD, layered architecture and elements of DDD, which led to quality improvement of the code & product.

CRM systems - Developed and maintained projects for a UK branch in the field of CRM systems. - Improved functionalities of automatic email content parsing and categorization for further processing and collaboration by end-users of the platform.

E-commerce - Developed and maintained the IdoSell platform used by thousands of stores globally. - Implemented or improved various integrations with external systems like PayPal, eBay, and Allegro. - Led the development of a new service collecting and presenting discounts and campaigns from thousands of stores running on the IdoSell platform.