SCRUM Master Certified

Fullstack Engineer with expertise in Java, Spring Boot, and React Native. Currently delivers and operates large-scale, cloud-native services for 500k+ monthly users at AVSystem. Experienced in government e-invoicing integration, message-driven architecture, production releases, and team mentorship. Holds a BSc in Applied Computer Science from Jagiellonian University and is pursuing an MEng in Data Science. Thrives on building scalable products and improving team efficiency. Aspires to drive innovative solutions in cloud infrastructure and enterprise app development.

Designed invoice storage and submission pipeline for Poland’s KSeF government e-invoicing system. Developed SQS-based message contracts for scalable, decoupled microservices. Led major ERP system's REST API integration, setting standards for system contracts. Delivered Java/Spring Boot REST services for a loyalty program and courier tracking, supporting 500k monthly users. Managed persistence-layer design with Spring Data JPA and various DB technologies. Enhanced React Native app features, improving conversion and ensuring high stability. Onboarded engineers and conducted technical interviews, reducing ramp-up time significantly.